diff --git a/devops-stages/stage-test.sh b/devops-stages/stage-test.sh
index 1e2f913..693ca47 100755
--- a/devops-stages/stage-test.sh
+++ b/devops-stages/stage-test.sh
@@ -21,7 +21,6 @@
 # Execute tests for charms
 CHARM_PATH="./installers/charm"
 NEW_CHARMS_NAMES="osm-keystone osm-lcm osm-mon osm-nbi osm-ng-ui osm-pol osm-ro vca-integrator-operator"
-OLD_CHARMS_NAMES="prometheus grafana"
 for charm in $NEW_CHARMS_NAMES; do
     if [ $(git diff --name-only "origin/${GERRIT_BRANCH}" -- "installers/charm/${charm}" | wc -l) -ne 0 ]; then
         echo "Running tox for ${charm}"
@@ -30,14 +29,6 @@
         cd "${CURRENT_DIR}"
     fi
 done
-for charm in $OLD_CHARMS_NAMES; do
-    if [ $(git diff --name-only "origin/${GERRIT_BRANCH}" -- "installers/charm/${charm}" | wc -l) -ne 0 ]; then
-        echo "Running tox for ${charm}"
-        cd "${CHARM_PATH}/${charm}"
-        TOX_PARALLEL_NO_SPINNER=1 tox --parallel=auto
-        cd "${CURRENT_DIR}"
-    fi
-done
 
 # Execute linting test for OSM helm chart
 helm lint installers/helm/osm
diff --git a/installers/charm/prometheus/.gitignore b/installers/charm/prometheus/.gitignore
deleted file mode 100644
index 2885df2..0000000
--- a/installers/charm/prometheus/.gitignore
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-venv
-.vscode
-build
-*.charm
-.coverage
-coverage.xml
-.stestr
-cover
-release
\ No newline at end of file
diff --git a/installers/charm/prometheus/.jujuignore b/installers/charm/prometheus/.jujuignore
deleted file mode 100644
index 3ae3e7d..0000000
--- a/installers/charm/prometheus/.jujuignore
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-venv
-.vscode
-build
-*.charm
-.coverage
-coverage.xml
-.gitignore
-.stestr
-cover
-release
-tests/
-requirements*
-tox.ini
diff --git a/installers/charm/prometheus/.yamllint.yaml b/installers/charm/prometheus/.yamllint.yaml
deleted file mode 100644
index d71fb69..0000000
--- a/installers/charm/prometheus/.yamllint.yaml
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
----
-extends: default
-
-yaml-files:
-  - "*.yaml"
-  - "*.yml"
-  - ".yamllint"
-ignore: |
-  .tox
-  cover/
-  build/
-  venv
-  release/
diff --git a/installers/charm/prometheus/README.md b/installers/charm/prometheus/README.md
deleted file mode 100644
index 0486c0d..0000000
--- a/installers/charm/prometheus/README.md
+++ /dev/null
@@ -1,23 +0,0 @@
-<!-- Copyright 2021 Canonical Ltd.
-
-Licensed under the Apache License, Version 2.0 (the "License"); you may
-not use this file except in compliance with the License. You may obtain
-a copy of the License at
-
-        http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-License for the specific language governing permissions and limitations
-under the License.
-
-For those usages not covered by the Apache License, Version 2.0 please
-contact: legal@canonical.com
-
-To get in touch with the maintainers, please contact:
-osm-charmers@lists.launchpad.net -->
-
-# Prometheus operator Charm for Kubernetes
-
-## Requirements
diff --git a/installers/charm/prometheus/actions.yaml b/installers/charm/prometheus/actions.yaml
deleted file mode 100644
index e41f3df..0000000
--- a/installers/charm/prometheus/actions.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-backup:
-  description: "Do a mongodb backup"
diff --git a/installers/charm/prometheus/charmcraft.yaml b/installers/charm/prometheus/charmcraft.yaml
deleted file mode 100644
index 87d0463..0000000
--- a/installers/charm/prometheus/charmcraft.yaml
+++ /dev/null
@@ -1,41 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-type: charm
-bases:
-  - build-on:
-      - name: ubuntu
-        channel: "20.04"
-        architectures: ["amd64"]
-    run-on:
-      - name: ubuntu
-        channel: "20.04"
-        architectures:
-          - amd64
-          - aarch64
-          - arm64
-parts:
-  charm:
-    build-packages:
-      - cargo
-      - git
-      - libffi-dev
-      - rustc
diff --git a/installers/charm/prometheus/config.yaml b/installers/charm/prometheus/config.yaml
deleted file mode 100644
index b25eaba..0000000
--- a/installers/charm/prometheus/config.yaml
+++ /dev/null
@@ -1,85 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-options:
-  web-subpath:
-    description: Subpath for accessing Prometheus
-    type: string
-    default: /
-  default-target:
-    description: Default target to be added in Prometheus
-    type: string
-    default: ""
-  max_file_size:
-    type: int
-    description: |
-      The maximum file size, in megabytes. If there is a reverse proxy in front
-      of Keystone, it may need to be configured to handle the requested size.
-      Note: if set to 0, there is no limit.
-    default: 0
-  ingress_class:
-    type: string
-    description: |
-      Ingress class name. This is useful for selecting the ingress to be used
-      in case there are multiple ingresses in the underlying k8s clusters.
-  ingress_whitelist_source_range:
-    type: string
-    description: |
-      A comma-separated list of CIDRs to store in the
-      ingress.kubernetes.io/whitelist-source-range annotation.
-
-      This can be used to lock down access to
-      Keystone based on source IP address.
-    default: ""
-  tls_secret_name:
-    type: string
-    description: TLS Secret name
-    default: ""
-  site_url:
-    type: string
-    description: Ingress URL
-    default: ""
-  cluster_issuer:
-    type: string
-    description: Name of the cluster issuer for TLS certificates
-    default: ""
-  enable_web_admin_api:
-    type: boolean
-    description: Boolean to enable the web admin api
-    default: false
-  image_pull_policy:
-    type: string
-    description: |
-      ImagePullPolicy configuration for the pod.
-      Possible values: always, ifnotpresent, never
-    default: always
-  security_context:
-    description: Enables the security context of the pods
-    type: boolean
-    default: false
-  web_config_username:
-    type: string
-    default: admin
-    description: Username to access the Prometheus Web Interface
-  web_config_password:
-    type: string
-    default: admin
-    description: Password to access the Prometheus Web Interface
diff --git a/installers/charm/prometheus/icon.svg b/installers/charm/prometheus/icon.svg
deleted file mode 100644
index 5c51f66..0000000
--- a/installers/charm/prometheus/icon.svg
+++ /dev/null
@@ -1,50 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   version="1.1"
-   id="Layer_1"
-   x="0px"
-   y="0px"
-   width="115.333px"
-   height="114px"
-   viewBox="0 0 115.333 114"
-   enable-background="new 0 0 115.333 114"
-   xml:space="preserve"
-   sodipodi:docname="prometheus_logo_orange.svg"
-   inkscape:version="0.92.1 r15371"><metadata
-     id="metadata4495"><rdf:RDF><cc:Work
-         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
-     id="defs4493" /><sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1484"
-     inkscape:window-height="886"
-     id="namedview4491"
-     showgrid="false"
-     inkscape:zoom="5.2784901"
-     inkscape:cx="60.603667"
-     inkscape:cy="60.329656"
-     inkscape:window-x="54"
-     inkscape:window-y="7"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="Layer_1" /><g
-     id="Layer_2" /><path
-     style="fill:#e6522c;fill-opacity:1"
-     inkscape:connector-curvature="0"
-     id="path4486"
-     d="M 56.667,0.667 C 25.372,0.667 0,26.036 0,57.332 c 0,31.295 25.372,56.666 56.667,56.666 31.295,0 56.666,-25.371 56.666,-56.666 0,-31.296 -25.372,-56.665 -56.666,-56.665 z m 0,106.055 c -8.904,0 -16.123,-5.948 -16.123,-13.283 H 72.79 c 0,7.334 -7.219,13.283 -16.123,13.283 z M 83.297,89.04 H 30.034 V 79.382 H 83.298 V 89.04 Z M 83.106,74.411 H 30.186 C 30.01,74.208 29.83,74.008 29.66,73.802 24.208,67.182 22.924,63.726 21.677,60.204 c -0.021,-0.116 6.611,1.355 11.314,2.413 0,0 2.42,0.56 5.958,1.205 -3.397,-3.982 -5.414,-9.044 -5.414,-14.218 0,-11.359 8.712,-21.285 5.569,-29.308 3.059,0.249 6.331,6.456 6.552,16.161 3.252,-4.494 4.613,-12.701 4.613,-17.733 0,-5.21 3.433,-11.262 6.867,-11.469 -3.061,5.045 0.793,9.37 4.219,20.099 1.285,4.03 1.121,10.812 2.113,15.113 C 63.797,33.534 65.333,20.5 71,16 c -2.5,5.667 0.37,12.758 2.333,16.167 3.167,5.5 5.087,9.667 5.087,17.548 0,5.284 -1.951,10.259 -5.242,14.148 3.742,-0.702 6.326,-1.335 6.326,-1.335 l 12.152,-2.371 c 10e-4,-10e-4 -1.765,7.261 -8.55,14.254 z" /></svg>
\ No newline at end of file
diff --git a/installers/charm/prometheus/metadata.yaml b/installers/charm/prometheus/metadata.yaml
deleted file mode 100644
index 932ccc2..0000000
--- a/installers/charm/prometheus/metadata.yaml
+++ /dev/null
@@ -1,51 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-name: osm-prometheus
-summary: OSM Prometheus
-description: |
-  A CAAS charm to deploy OSM's Prometheus.
-series:
-  - kubernetes
-tags:
-  - kubernetes
-  - osm
-  - prometheus
-min-juju-version: 2.8.0
-deployment:
-  type: stateful
-  service: cluster
-resources:
-  backup-image:
-    type: oci-image
-    description: Container image to run backup actions
-    upstream-source: "ed1000/prometheus-backup:latest"
-  image:
-    type: oci-image
-    description: OSM docker image for Prometheus
-    upstream-source: "ubuntu/prometheus:latest"
-provides:
-  prometheus:
-    interface: prometheus
-storage:
-  data:
-    type: filesystem
-    location: /prometheus
diff --git a/installers/charm/prometheus/requirements-test.txt b/installers/charm/prometheus/requirements-test.txt
deleted file mode 100644
index cf61dd4..0000000
--- a/installers/charm/prometheus/requirements-test.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-mock==4.0.3
diff --git a/installers/charm/prometheus/requirements.txt b/installers/charm/prometheus/requirements.txt
deleted file mode 100644
index db13e51..0000000
--- a/installers/charm/prometheus/requirements.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-git+https://github.com/charmed-osm/ops-lib-charmed-osm/@master
-requests
-urllib3>1.25.9
-bcrypt
diff --git a/installers/charm/prometheus/src/charm.py b/installers/charm/prometheus/src/charm.py
deleted file mode 100755
index af39a13..0000000
--- a/installers/charm/prometheus/src/charm.py
+++ /dev/null
@@ -1,298 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-# pylint: disable=E0213
-
-import base64
-from ipaddress import ip_network
-import logging
-from typing import NoReturn, Optional
-from urllib.parse import urlparse
-
-import bcrypt
-from oci_image import OCIImageResource
-from ops.framework import EventBase
-from ops.main import main
-from opslib.osm.charm import CharmedOsmBase
-from opslib.osm.interfaces.prometheus import PrometheusServer
-from opslib.osm.pod import (
-    ContainerV3Builder,
-    FilesV3Builder,
-    IngressResourceV3Builder,
-    PodSpecV3Builder,
-)
-from opslib.osm.validator import (
-    ModelValidator,
-    validator,
-)
-import requests
-
-
-logger = logging.getLogger(__name__)
-
-PORT = 9090
-
-
-class ConfigModel(ModelValidator):
-    web_subpath: str
-    default_target: str
-    max_file_size: int
-    site_url: Optional[str]
-    cluster_issuer: Optional[str]
-    ingress_class: Optional[str]
-    ingress_whitelist_source_range: Optional[str]
-    tls_secret_name: Optional[str]
-    enable_web_admin_api: bool
-    image_pull_policy: str
-    security_context: bool
-    web_config_username: str
-    web_config_password: str
-
-    @validator("web_subpath")
-    def validate_web_subpath(cls, v):
-        if len(v) < 1:
-            raise ValueError("web-subpath must be a non-empty string")
-        return v
-
-    @validator("max_file_size")
-    def validate_max_file_size(cls, v):
-        if v < 0:
-            raise ValueError("value must be equal or greater than 0")
-        return v
-
-    @validator("site_url")
-    def validate_site_url(cls, v):
-        if v:
-            parsed = urlparse(v)
-            if not parsed.scheme.startswith("http"):
-                raise ValueError("value must start with http")
-        return v
-
-    @validator("ingress_whitelist_source_range")
-    def validate_ingress_whitelist_source_range(cls, v):
-        if v:
-            ip_network(v)
-        return v
-
-    @validator("image_pull_policy")
-    def validate_image_pull_policy(cls, v):
-        values = {
-            "always": "Always",
-            "ifnotpresent": "IfNotPresent",
-            "never": "Never",
-        }
-        v = v.lower()
-        if v not in values.keys():
-            raise ValueError("value must be always, ifnotpresent or never")
-        return values[v]
-
-
-class PrometheusCharm(CharmedOsmBase):
-
-    """Prometheus Charm."""
-
-    def __init__(self, *args) -> NoReturn:
-        """Prometheus Charm constructor."""
-        super().__init__(*args, oci_image="image")
-
-        # Registering provided relation events
-        self.prometheus = PrometheusServer(self, "prometheus")
-        self.framework.observe(
-            self.on.prometheus_relation_joined,  # pylint: disable=E1101
-            self._publish_prometheus_info,
-        )
-
-        # Registering actions
-        self.framework.observe(
-            self.on.backup_action,  # pylint: disable=E1101
-            self._on_backup_action,
-        )
-
-    def _publish_prometheus_info(self, event: EventBase) -> NoReturn:
-        config = ConfigModel(**dict(self.config))
-        self.prometheus.publish_info(
-            self.app.name,
-            PORT,
-            user=config.web_config_username,
-            password=config.web_config_password,
-        )
-
-    def _on_backup_action(self, event: EventBase) -> NoReturn:
-        url = f"http://{self.model.app.name}:{PORT}/api/v1/admin/tsdb/snapshot"
-        result = requests.post(url)
-
-        if result.status_code == 200:
-            event.set_results({"backup-name": result.json()["name"]})
-        else:
-            event.fail(f"status-code: {result.status_code}")
-
-    def _build_config_file(self, config: ConfigModel):
-        files_builder = FilesV3Builder()
-        files_builder.add_file(
-            "prometheus.yml",
-            (
-                "global:\n"
-                "  scrape_interval: 15s\n"
-                "  evaluation_interval: 15s\n"
-                "alerting:\n"
-                "  alertmanagers:\n"
-                "    - static_configs:\n"
-                "        - targets:\n"
-                "rule_files:\n"
-                "scrape_configs:\n"
-                "  - job_name: 'prometheus'\n"
-                "    static_configs:\n"
-                f"      - targets: [{config.default_target}]\n"
-            ),
-        )
-        return files_builder.build()
-
-    def _build_webconfig_file(self):
-        files_builder = FilesV3Builder()
-        files_builder.add_file("web.yml", "web-config-file", secret=True)
-        return files_builder.build()
-
-    def build_pod_spec(self, image_info):
-        # Validate config
-        config = ConfigModel(**dict(self.config))
-        # Create Builder for the PodSpec
-        pod_spec_builder = PodSpecV3Builder(
-            enable_security_context=config.security_context
-        )
-
-        # Build Backup Container
-        backup_image = OCIImageResource(self, "backup-image")
-        backup_image_info = backup_image.fetch()
-        backup_container_builder = ContainerV3Builder("prom-backup", backup_image_info)
-        backup_container = backup_container_builder.build()
-
-        # Add backup container to pod spec
-        pod_spec_builder.add_container(backup_container)
-
-        # Add pod secrets
-        prometheus_secret_name = f"{self.app.name}-secret"
-        pod_spec_builder.add_secret(
-            prometheus_secret_name,
-            {
-                "web-config-file": (
-                    "basic_auth_users:\n"
-                    f"  {config.web_config_username}: {self._hash_password(config.web_config_password)}\n"
-                )
-            },
-        )
-
-        # Build Container
-        container_builder = ContainerV3Builder(
-            self.app.name,
-            image_info,
-            config.image_pull_policy,
-            run_as_non_root=config.security_context,
-        )
-        container_builder.add_port(name=self.app.name, port=PORT)
-        token = self._base64_encode(
-            f"{config.web_config_username}:{config.web_config_password}"
-        )
-        container_builder.add_http_readiness_probe(
-            "/-/ready",
-            PORT,
-            initial_delay_seconds=10,
-            timeout_seconds=30,
-            http_headers=[("Authorization", f"Basic {token}")],
-        )
-        container_builder.add_http_liveness_probe(
-            "/-/healthy",
-            PORT,
-            initial_delay_seconds=30,
-            period_seconds=30,
-            http_headers=[("Authorization", f"Basic {token}")],
-        )
-        command = [
-            "/bin/prometheus",
-            "--config.file=/etc/prometheus/prometheus.yml",
-            "--web.config.file=/etc/prometheus/web-config/web.yml",
-            "--storage.tsdb.path=/prometheus",
-            "--web.console.libraries=/usr/share/prometheus/console_libraries",
-            "--web.console.templates=/usr/share/prometheus/consoles",
-            f"--web.route-prefix={config.web_subpath}",
-            f"--web.external-url=http://localhost:{PORT}{config.web_subpath}",
-        ]
-        if config.enable_web_admin_api:
-            command.append("--web.enable-admin-api")
-        container_builder.add_command(command)
-        container_builder.add_volume_config(
-            "config", "/etc/prometheus", self._build_config_file(config)
-        )
-        container_builder.add_volume_config(
-            "web-config",
-            "/etc/prometheus/web-config",
-            self._build_webconfig_file(),
-            secret_name=prometheus_secret_name,
-        )
-        container = container_builder.build()
-        # Add container to pod spec
-        pod_spec_builder.add_container(container)
-        # Add ingress resources to pod spec if site url exists
-        if config.site_url:
-            parsed = urlparse(config.site_url)
-            annotations = {
-                "nginx.ingress.kubernetes.io/proxy-body-size": "{}".format(
-                    str(config.max_file_size) + "m"
-                    if config.max_file_size > 0
-                    else config.max_file_size
-                )
-            }
-            if config.ingress_class:
-                annotations["kubernetes.io/ingress.class"] = config.ingress_class
-            ingress_resource_builder = IngressResourceV3Builder(
-                f"{self.app.name}-ingress", annotations
-            )
-
-            if config.ingress_whitelist_source_range:
-                annotations[
-                    "nginx.ingress.kubernetes.io/whitelist-source-range"
-                ] = config.ingress_whitelist_source_range
-
-            if config.cluster_issuer:
-                annotations["cert-manager.io/cluster-issuer"] = config.cluster_issuer
-
-            if parsed.scheme == "https":
-                ingress_resource_builder.add_tls(
-                    [parsed.hostname], config.tls_secret_name
-                )
-            else:
-                annotations["nginx.ingress.kubernetes.io/ssl-redirect"] = "false"
-
-            ingress_resource_builder.add_rule(parsed.hostname, self.app.name, PORT)
-            ingress_resource = ingress_resource_builder.build()
-            pod_spec_builder.add_ingress_resource(ingress_resource)
-        return pod_spec_builder.build()
-
-    def _hash_password(self, password):
-        hashed_password = bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt())
-        return hashed_password.decode()
-
-    def _base64_encode(self, phrase: str) -> str:
-        return base64.b64encode(phrase.encode("utf-8")).decode("utf-8")
-
-
-if __name__ == "__main__":
-    main(PrometheusCharm)
diff --git a/installers/charm/prometheus/src/pod_spec.py b/installers/charm/prometheus/src/pod_spec.py
deleted file mode 100644
index 202114e..0000000
--- a/installers/charm/prometheus/src/pod_spec.py
+++ /dev/null
@@ -1,380 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-from ipaddress import ip_network
-import logging
-from typing import Any, Dict, List
-from urllib.parse import urlparse
-
-logger = logging.getLogger(__name__)
-
-
-def _validate_max_file_size(max_file_size: int, site_url: str) -> bool:
-    """Validate max_file_size.
-
-    Args:
-        max_file_size (int): maximum file size allowed.
-        site_url (str): endpoint url.
-
-    Returns:
-        bool: True if valid, false otherwise.
-    """
-    if not site_url:
-        return True
-
-    parsed = urlparse(site_url)
-
-    if not parsed.scheme.startswith("http"):
-        return True
-
-    if max_file_size is None:
-        return False
-
-    return max_file_size >= 0
-
-
-def _validate_ip_network(network: str) -> bool:
-    """Validate IP network.
-
-    Args:
-        network (str): IP network range.
-
-    Returns:
-        bool: True if valid, false otherwise.
-    """
-    if not network:
-        return True
-
-    try:
-        ip_network(network)
-    except ValueError:
-        return False
-
-    return True
-
-
-def _validate_data(config_data: Dict[str, Any], relation_data: Dict[str, Any]) -> bool:
-    """Validates passed information.
-
-    Args:
-        config_data (Dict[str, Any]): configuration information.
-        relation_data (Dict[str, Any]): relation information
-
-    Raises:
-        ValueError: when config and/or relation data is not valid.
-    """
-    config_validators = {
-        "web_subpath": lambda value, _: isinstance(value, str) and len(value) > 0,
-        "default_target": lambda value, _: isinstance(value, str),
-        "site_url": lambda value, _: isinstance(value, str)
-        if value is not None
-        else True,
-        "max_file_size": lambda value, values: _validate_max_file_size(
-            value, values.get("site_url")
-        ),
-        "ingress_whitelist_source_range": lambda value, _: _validate_ip_network(value),
-        "tls_secret_name": lambda value, _: isinstance(value, str)
-        if value is not None
-        else True,
-        "enable_web_admin_api": lambda value, _: isinstance(value, bool),
-    }
-    relation_validators = {}
-    problems = []
-
-    for key, validator in config_validators.items():
-        valid = validator(config_data.get(key), config_data)
-
-        if not valid:
-            problems.append(key)
-
-    for key, validator in relation_validators.items():
-        valid = validator(relation_data.get(key), relation_data)
-
-        if not valid:
-            problems.append(key)
-
-    if len(problems) > 0:
-        raise ValueError("Errors found in: {}".format(", ".join(problems)))
-
-    return True
-
-
-def _make_pod_ports(port: int) -> List[Dict[str, Any]]:
-    """Generate pod ports details.
-
-    Args:
-        port (int): port to expose.
-
-    Returns:
-        List[Dict[str, Any]]: pod port details.
-    """
-    return [{"name": "prometheus", "containerPort": port, "protocol": "TCP"}]
-
-
-def _make_pod_envconfig(
-    config: Dict[str, Any], relation_state: Dict[str, Any]
-) -> Dict[str, Any]:
-    """Generate pod environment configuration.
-
-    Args:
-        config (Dict[str, Any]): configuration information.
-        relation_state (Dict[str, Any]): relation state information.
-
-    Returns:
-        Dict[str, Any]: pod environment configuration.
-    """
-    envconfig = {}
-
-    return envconfig
-
-
-def _make_pod_ingress_resources(
-    config: Dict[str, Any], app_name: str, port: int
-) -> List[Dict[str, Any]]:
-    """Generate pod ingress resources.
-
-    Args:
-        config (Dict[str, Any]): configuration information.
-        app_name (str): application name.
-        port (int): port to expose.
-
-    Returns:
-        List[Dict[str, Any]]: pod ingress resources.
-    """
-    site_url = config.get("site_url")
-
-    if not site_url:
-        return
-
-    parsed = urlparse(site_url)
-
-    if not parsed.scheme.startswith("http"):
-        return
-
-    max_file_size = config["max_file_size"]
-    ingress_whitelist_source_range = config["ingress_whitelist_source_range"]
-
-    annotations = {
-        "nginx.ingress.kubernetes.io/proxy-body-size": "{}".format(
-            str(max_file_size) + "m" if max_file_size > 0 else max_file_size
-        ),
-    }
-
-    if ingress_whitelist_source_range:
-        annotations[
-            "nginx.ingress.kubernetes.io/whitelist-source-range"
-        ] = ingress_whitelist_source_range
-
-    ingress_spec_tls = None
-
-    if parsed.scheme == "https":
-        ingress_spec_tls = [{"hosts": [parsed.hostname]}]
-        tls_secret_name = config["tls_secret_name"]
-        if tls_secret_name:
-            ingress_spec_tls[0]["secretName"] = tls_secret_name
-    else:
-        annotations["nginx.ingress.kubernetes.io/ssl-redirect"] = "false"
-
-    ingress = {
-        "name": "{}-ingress".format(app_name),
-        "annotations": annotations,
-        "spec": {
-            "rules": [
-                {
-                    "host": parsed.hostname,
-                    "http": {
-                        "paths": [
-                            {
-                                "path": "/",
-                                "backend": {
-                                    "serviceName": app_name,
-                                    "servicePort": port,
-                                },
-                            }
-                        ]
-                    },
-                }
-            ]
-        },
-    }
-    if ingress_spec_tls:
-        ingress["spec"]["tls"] = ingress_spec_tls
-
-    return [ingress]
-
-
-def _make_pod_files(config: Dict[str, Any]) -> List[Dict[str, Any]]:
-    """Generating ConfigMap information
-
-    Args:
-        config (Dict[str, Any]): configuration information.
-
-    Returns:
-        List[Dict[str, Any]]: ConfigMap information.
-    """
-    files = [
-        {
-            "name": "config",
-            "mountPath": "/etc/prometheus",
-            "files": [
-                {
-                    "path": "prometheus.yml",
-                    "content": (
-                        "global:\n"
-                        "  scrape_interval: 15s\n"
-                        "  evaluation_interval: 15s\n"
-                        "alerting:\n"
-                        "  alertmanagers:\n"
-                        "    - static_configs:\n"
-                        "        - targets:\n"
-                        "rule_files:\n"
-                        "scrape_configs:\n"
-                        "  - job_name: 'prometheus'\n"
-                        "    static_configs:\n"
-                        "      - targets: [{}]\n".format(config["default_target"])
-                    ),
-                }
-            ],
-        }
-    ]
-
-    return files
-
-
-def _make_readiness_probe(port: int) -> Dict[str, Any]:
-    """Generate readiness probe.
-
-    Args:
-        port (int): service port.
-
-    Returns:
-        Dict[str, Any]: readiness probe.
-    """
-    return {
-        "httpGet": {
-            "path": "/-/ready",
-            "port": port,
-        },
-        "initialDelaySeconds": 10,
-        "timeoutSeconds": 30,
-    }
-
-
-def _make_liveness_probe(port: int) -> Dict[str, Any]:
-    """Generate liveness probe.
-
-    Args:
-        port (int): service port.
-
-    Returns:
-        Dict[str, Any]: liveness probe.
-    """
-    return {
-        "httpGet": {
-            "path": "/-/healthy",
-            "port": port,
-        },
-        "initialDelaySeconds": 30,
-        "periodSeconds": 30,
-    }
-
-
-def _make_pod_command(config: Dict[str, Any], port: int) -> List[str]:
-    """Generate the startup command.
-
-    Args:
-        config (Dict[str, Any]): Configuration information.
-        port (int): port.
-
-    Returns:
-        List[str]: command to startup the process.
-    """
-    command = [
-        "/bin/prometheus",
-        "--config.file=/etc/prometheus/prometheus.yml",
-        "--storage.tsdb.path=/prometheus",
-        "--web.console.libraries=/usr/share/prometheus/console_libraries",
-        "--web.console.templates=/usr/share/prometheus/consoles",
-        "--web.route-prefix={}".format(config.get("web_subpath")),
-        "--web.external-url=http://localhost:{}{}".format(
-            port, config.get("web_subpath")
-        ),
-    ]
-    if config.get("enable_web_admin_api"):
-        command.append("--web.enable-admin-api")
-    return command
-
-
-def make_pod_spec(
-    image_info: Dict[str, str],
-    config: Dict[str, Any],
-    relation_state: Dict[str, Any],
-    app_name: str = "prometheus",
-    port: int = 9090,
-) -> Dict[str, Any]:
-    """Generate the pod spec information.
-
-    Args:
-        image_info (Dict[str, str]): Object provided by
-            OCIImageResource("image").fetch().
-        config (Dict[str, Any]): Configuration information.
-        relation_state (Dict[str, Any]): Relation state information.
-        app_name (str, optional): Application name. Defaults to "ro".
-        port (int, optional): Port for the container. Defaults to 9090.
-
-    Returns:
-        Dict[str, Any]: Pod spec dictionary for the charm.
-    """
-    if not image_info:
-        return None
-
-    _validate_data(config, relation_state)
-
-    ports = _make_pod_ports(port)
-    env_config = _make_pod_envconfig(config, relation_state)
-    files = _make_pod_files(config)
-    readiness_probe = _make_readiness_probe(port)
-    liveness_probe = _make_liveness_probe(port)
-    ingress_resources = _make_pod_ingress_resources(config, app_name, port)
-    command = _make_pod_command(config, port)
-
-    return {
-        "version": 3,
-        "containers": [
-            {
-                "name": app_name,
-                "imageDetails": image_info,
-                "imagePullPolicy": "Always",
-                "ports": ports,
-                "envConfig": env_config,
-                "volumeConfig": files,
-                "command": command,
-                "kubernetes": {
-                    "readinessProbe": readiness_probe,
-                    "livenessProbe": liveness_probe,
-                },
-            }
-        ],
-        "kubernetesResources": {
-            "ingressResources": ingress_resources or [],
-        },
-    }
diff --git a/installers/charm/prometheus/tests/__init__.py b/installers/charm/prometheus/tests/__init__.py
deleted file mode 100644
index 446d5ce..0000000
--- a/installers/charm/prometheus/tests/__init__.py
+++ /dev/null
@@ -1,40 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2020 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-"""Init mocking for unit tests."""
-
-import sys
-
-
-import mock
-
-
-class OCIImageResourceErrorMock(Exception):
-    pass
-
-
-sys.path.append("src")
-
-oci_image = mock.MagicMock()
-oci_image.OCIImageResourceError = OCIImageResourceErrorMock
-sys.modules["oci_image"] = oci_image
-sys.modules["oci_image"].OCIImageResource().fetch.return_value = {}
diff --git a/installers/charm/prometheus/tests/test_charm.py b/installers/charm/prometheus/tests/test_charm.py
deleted file mode 100644
index 965400a..0000000
--- a/installers/charm/prometheus/tests/test_charm.py
+++ /dev/null
@@ -1,111 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2020 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-import sys
-from typing import NoReturn
-import unittest
-
-from charm import PrometheusCharm
-from ops.model import ActiveStatus
-from ops.testing import Harness
-
-
-class TestCharm(unittest.TestCase):
-    """Prometheus Charm unit tests."""
-
-    def setUp(self) -> NoReturn:
-        """Test setup"""
-        self.image_info = sys.modules["oci_image"].OCIImageResource().fetch()
-        self.harness = Harness(PrometheusCharm)
-        self.harness.set_leader(is_leader=True)
-        self.harness.begin()
-        self.config = {
-            "web-subpath": "/",
-            "default-target": "",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "",
-            "tls_secret_name": "",
-            "site_url": "https://prometheus.192.168.100.100.nip.io",
-            "cluster_issuer": "vault-issuer",
-            "enable_web_admin_api": False,
-            "web_config_username": "admin",
-            "web_config_password": "1234",
-        }
-        self.harness.update_config(self.config)
-
-    def test_config_changed(
-        self,
-    ) -> NoReturn:
-        """Test ingress resources without HTTP."""
-
-        self.harness.charm.on.config_changed.emit()
-
-        # Assertions
-        self.assertIsInstance(self.harness.charm.unit.status, ActiveStatus)
-
-    def test_config_changed_non_leader(
-        self,
-    ) -> NoReturn:
-        """Test ingress resources without HTTP."""
-        self.harness.set_leader(is_leader=False)
-        self.harness.charm.on.config_changed.emit()
-
-        # Assertions
-        self.assertIsInstance(self.harness.charm.unit.status, ActiveStatus)
-
-    def test_publish_prometheus_info(
-        self,
-    ) -> NoReturn:
-        """Test to see if prometheus relation is updated."""
-        expected_result = {
-            "hostname": self.harness.charm.app.name,
-            "port": "9090",
-            "user": "admin",
-            "password": "1234",
-        }
-
-        relation_id = self.harness.add_relation("prometheus", "mon")
-        self.harness.add_relation_unit(relation_id, "mon/0")
-        relation_data = self.harness.get_relation_data(
-            relation_id, self.harness.charm.app.name
-        )
-
-        self.assertDictEqual(expected_result, relation_data)
-
-    def test_publish_prometheus_info_non_leader(
-        self,
-    ) -> NoReturn:
-        """Test to see if prometheus relation is updated."""
-        expected_result = {}
-
-        self.harness.set_leader(is_leader=False)
-        relation_id = self.harness.add_relation("prometheus", "mon")
-        self.harness.add_relation_unit(relation_id, "mon/0")
-        relation_data = self.harness.get_relation_data(
-            relation_id, self.harness.charm.app.name
-        )
-
-        self.assertDictEqual(expected_result, relation_data)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/installers/charm/prometheus/tests/test_pod_spec.py b/installers/charm/prometheus/tests/test_pod_spec.py
deleted file mode 100644
index 1adbae6..0000000
--- a/installers/charm/prometheus/tests/test_pod_spec.py
+++ /dev/null
@@ -1,640 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2020 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-
-from typing import NoReturn
-import unittest
-
-import pod_spec
-
-
-class TestPodSpec(unittest.TestCase):
-    """Pod spec unit tests."""
-
-    def test_make_pod_ports(self) -> NoReturn:
-        """Testing make pod ports."""
-        port = 9090
-
-        expected_result = [
-            {
-                "name": "prometheus",
-                "containerPort": port,
-                "protocol": "TCP",
-            }
-        ]
-
-        pod_ports = pod_spec._make_pod_ports(port)
-
-        self.assertListEqual(expected_result, pod_ports)
-
-    def test_make_pod_envconfig(self) -> NoReturn:
-        """Testing make pod envconfig."""
-        config = {}
-        relation_state = {}
-
-        expected_result = {}
-
-        pod_envconfig = pod_spec._make_pod_envconfig(config, relation_state)
-
-        self.assertDictEqual(expected_result, pod_envconfig)
-
-    def test_make_pod_ingress_resources_without_site_url(self) -> NoReturn:
-        """Testing make pod ingress resources without site_url."""
-        config = {"site_url": ""}
-        app_name = "prometheus"
-        port = 9090
-
-        pod_ingress_resources = pod_spec._make_pod_ingress_resources(
-            config, app_name, port
-        )
-
-        self.assertIsNone(pod_ingress_resources)
-
-    def test_make_pod_ingress_resources(self) -> NoReturn:
-        """Testing make pod ingress resources."""
-        config = {
-            "site_url": "http://prometheus",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "",
-        }
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = [
-            {
-                "name": f"{app_name}-ingress",
-                "annotations": {
-                    "nginx.ingress.kubernetes.io/proxy-body-size": f"{config['max_file_size']}",
-                    "nginx.ingress.kubernetes.io/ssl-redirect": "false",
-                },
-                "spec": {
-                    "rules": [
-                        {
-                            "host": app_name,
-                            "http": {
-                                "paths": [
-                                    {
-                                        "path": "/",
-                                        "backend": {
-                                            "serviceName": app_name,
-                                            "servicePort": port,
-                                        },
-                                    }
-                                ]
-                            },
-                        }
-                    ]
-                },
-            }
-        ]
-
-        pod_ingress_resources = pod_spec._make_pod_ingress_resources(
-            config, app_name, port
-        )
-
-        self.assertListEqual(expected_result, pod_ingress_resources)
-
-    def test_make_pod_ingress_resources_with_whitelist_source_range(self) -> NoReturn:
-        """Testing make pod ingress resources with whitelist_source_range."""
-        config = {
-            "site_url": "http://prometheus",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "0.0.0.0/0",
-        }
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = [
-            {
-                "name": f"{app_name}-ingress",
-                "annotations": {
-                    "nginx.ingress.kubernetes.io/proxy-body-size": f"{config['max_file_size']}",
-                    "nginx.ingress.kubernetes.io/ssl-redirect": "false",
-                    "nginx.ingress.kubernetes.io/whitelist-source-range": config[
-                        "ingress_whitelist_source_range"
-                    ],
-                },
-                "spec": {
-                    "rules": [
-                        {
-                            "host": app_name,
-                            "http": {
-                                "paths": [
-                                    {
-                                        "path": "/",
-                                        "backend": {
-                                            "serviceName": app_name,
-                                            "servicePort": port,
-                                        },
-                                    }
-                                ]
-                            },
-                        }
-                    ]
-                },
-            }
-        ]
-
-        pod_ingress_resources = pod_spec._make_pod_ingress_resources(
-            config, app_name, port
-        )
-
-        self.assertListEqual(expected_result, pod_ingress_resources)
-
-    def test_make_pod_ingress_resources_with_https(self) -> NoReturn:
-        """Testing make pod ingress resources with HTTPs."""
-        config = {
-            "site_url": "https://prometheus",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "",
-            "tls_secret_name": "",
-        }
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = [
-            {
-                "name": f"{app_name}-ingress",
-                "annotations": {
-                    "nginx.ingress.kubernetes.io/proxy-body-size": f"{config['max_file_size']}",
-                },
-                "spec": {
-                    "rules": [
-                        {
-                            "host": app_name,
-                            "http": {
-                                "paths": [
-                                    {
-                                        "path": "/",
-                                        "backend": {
-                                            "serviceName": app_name,
-                                            "servicePort": port,
-                                        },
-                                    }
-                                ]
-                            },
-                        }
-                    ],
-                    "tls": [{"hosts": [app_name]}],
-                },
-            }
-        ]
-
-        pod_ingress_resources = pod_spec._make_pod_ingress_resources(
-            config, app_name, port
-        )
-
-        self.assertListEqual(expected_result, pod_ingress_resources)
-
-    def test_make_pod_ingress_resources_with_https_tls_secret_name(self) -> NoReturn:
-        """Testing make pod ingress resources with HTTPs and TLS secret name."""
-        config = {
-            "site_url": "https://prometheus",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "",
-            "tls_secret_name": "secret_name",
-        }
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = [
-            {
-                "name": f"{app_name}-ingress",
-                "annotations": {
-                    "nginx.ingress.kubernetes.io/proxy-body-size": f"{config['max_file_size']}",
-                },
-                "spec": {
-                    "rules": [
-                        {
-                            "host": app_name,
-                            "http": {
-                                "paths": [
-                                    {
-                                        "path": "/",
-                                        "backend": {
-                                            "serviceName": app_name,
-                                            "servicePort": port,
-                                        },
-                                    }
-                                ]
-                            },
-                        }
-                    ],
-                    "tls": [
-                        {"hosts": [app_name], "secretName": config["tls_secret_name"]}
-                    ],
-                },
-            }
-        ]
-
-        pod_ingress_resources = pod_spec._make_pod_ingress_resources(
-            config, app_name, port
-        )
-
-        self.assertListEqual(expected_result, pod_ingress_resources)
-
-    def test_make_pod_files(self) -> NoReturn:
-        """Testing make pod files."""
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "",
-        }
-
-        expected_result = [
-            {
-                "name": "config",
-                "mountPath": "/etc/prometheus",
-                "files": [
-                    {
-                        "path": "prometheus.yml",
-                        "content": (
-                            "global:\n"
-                            "  scrape_interval: 15s\n"
-                            "  evaluation_interval: 15s\n"
-                            "alerting:\n"
-                            "  alertmanagers:\n"
-                            "    - static_configs:\n"
-                            "        - targets:\n"
-                            "rule_files:\n"
-                            "scrape_configs:\n"
-                            "  - job_name: 'prometheus'\n"
-                            "    static_configs:\n"
-                            "      - targets: [{}]\n".format(config["default_target"])
-                        ),
-                    }
-                ],
-            }
-        ]
-
-        pod_envconfig = pod_spec._make_pod_files(config)
-        self.assertListEqual(expected_result, pod_envconfig)
-
-    def test_make_readiness_probe(self) -> NoReturn:
-        """Testing make readiness probe."""
-        port = 9090
-
-        expected_result = {
-            "httpGet": {
-                "path": "/-/ready",
-                "port": port,
-            },
-            "initialDelaySeconds": 10,
-            "timeoutSeconds": 30,
-        }
-
-        readiness_probe = pod_spec._make_readiness_probe(port)
-
-        self.assertDictEqual(expected_result, readiness_probe)
-
-    def test_make_liveness_probe(self) -> NoReturn:
-        """Testing make liveness probe."""
-        port = 9090
-
-        expected_result = {
-            "httpGet": {
-                "path": "/-/healthy",
-                "port": port,
-            },
-            "initialDelaySeconds": 30,
-            "periodSeconds": 30,
-        }
-
-        liveness_probe = pod_spec._make_liveness_probe(port)
-
-        self.assertDictEqual(expected_result, liveness_probe)
-
-    def test_make_pod_command(self) -> NoReturn:
-        """Testing make pod command."""
-        port = 9090
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "",
-        }
-
-        expected_result = [
-            "/bin/prometheus",
-            "--config.file=/etc/prometheus/prometheus.yml",
-            "--storage.tsdb.path=/prometheus",
-            "--web.console.libraries=/usr/share/prometheus/console_libraries",
-            "--web.console.templates=/usr/share/prometheus/consoles",
-            "--web.route-prefix={}".format(config.get("web_subpath")),
-            "--web.external-url=http://localhost:{}{}".format(
-                port, config.get("web_subpath")
-            ),
-        ]
-
-        pod_envconfig = pod_spec._make_pod_command(config, port)
-
-        self.assertListEqual(expected_result, pod_envconfig)
-
-    def test_make_pod_command_with_web_admin_api_enabled(self) -> NoReturn:
-        """Testing make pod command."""
-        port = 9090
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "",
-            "enable_web_admin_api": True,
-        }
-
-        expected_result = [
-            "/bin/prometheus",
-            "--config.file=/etc/prometheus/prometheus.yml",
-            "--storage.tsdb.path=/prometheus",
-            "--web.console.libraries=/usr/share/prometheus/console_libraries",
-            "--web.console.templates=/usr/share/prometheus/consoles",
-            "--web.route-prefix={}".format(config.get("web_subpath")),
-            "--web.external-url=http://localhost:{}{}".format(
-                port, config.get("web_subpath")
-            ),
-            "--web.enable-admin-api",
-        ]
-
-        pod_envconfig = pod_spec._make_pod_command(config, port)
-
-        self.assertListEqual(expected_result, pod_envconfig)
-
-    def test_make_pod_spec(self) -> NoReturn:
-        """Testing make pod spec."""
-        image_info = {"upstream-source": "ubuntu/prometheus:latest"}
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "",
-            "enable_web_admin_api": False,
-        }
-        relation_state = {}
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = {
-            "version": 3,
-            "containers": [
-                {
-                    "name": app_name,
-                    "imageDetails": image_info,
-                    "imagePullPolicy": "Always",
-                    "ports": [
-                        {
-                            "name": app_name,
-                            "containerPort": port,
-                            "protocol": "TCP",
-                        }
-                    ],
-                    "envConfig": {},
-                    "volumeConfig": [
-                        {
-                            "name": "config",
-                            "mountPath": "/etc/prometheus",
-                            "files": [
-                                {
-                                    "path": "prometheus.yml",
-                                    "content": (
-                                        "global:\n"
-                                        "  scrape_interval: 15s\n"
-                                        "  evaluation_interval: 15s\n"
-                                        "alerting:\n"
-                                        "  alertmanagers:\n"
-                                        "    - static_configs:\n"
-                                        "        - targets:\n"
-                                        "rule_files:\n"
-                                        "scrape_configs:\n"
-                                        "  - job_name: 'prometheus'\n"
-                                        "    static_configs:\n"
-                                        "      - targets: [{}]\n".format(
-                                            config.get("default_target")
-                                        )
-                                    ),
-                                }
-                            ],
-                        }
-                    ],
-                    "command": [
-                        "/bin/prometheus",
-                        "--config.file=/etc/prometheus/prometheus.yml",
-                        "--storage.tsdb.path=/prometheus",
-                        "--web.console.libraries=/usr/share/prometheus/console_libraries",
-                        "--web.console.templates=/usr/share/prometheus/consoles",
-                        "--web.route-prefix={}".format(config.get("web_subpath")),
-                        "--web.external-url=http://localhost:{}{}".format(
-                            port, config.get("web_subpath")
-                        ),
-                    ],
-                    "kubernetes": {
-                        "readinessProbe": {
-                            "httpGet": {
-                                "path": "/-/ready",
-                                "port": port,
-                            },
-                            "initialDelaySeconds": 10,
-                            "timeoutSeconds": 30,
-                        },
-                        "livenessProbe": {
-                            "httpGet": {
-                                "path": "/-/healthy",
-                                "port": port,
-                            },
-                            "initialDelaySeconds": 30,
-                            "periodSeconds": 30,
-                        },
-                    },
-                }
-            ],
-            "kubernetesResources": {"ingressResources": []},
-        }
-
-        spec = pod_spec.make_pod_spec(
-            image_info, config, relation_state, app_name, port
-        )
-
-        self.assertDictEqual(expected_result, spec)
-
-    def test_make_pod_spec_with_ingress(self) -> NoReturn:
-        """Testing make pod spec."""
-        image_info = {"upstream-source": "ubuntu/prometheus:latest"}
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "https://prometheus",
-            "tls_secret_name": "prometheus",
-            "max_file_size": 0,
-            "ingress_whitelist_source_range": "0.0.0.0/0",
-            "enable_web_admin_api": False,
-        }
-        relation_state = {}
-        app_name = "prometheus"
-        port = 9090
-
-        expected_result = {
-            "version": 3,
-            "containers": [
-                {
-                    "name": app_name,
-                    "imageDetails": image_info,
-                    "imagePullPolicy": "Always",
-                    "ports": [
-                        {
-                            "name": app_name,
-                            "containerPort": port,
-                            "protocol": "TCP",
-                        }
-                    ],
-                    "envConfig": {},
-                    "volumeConfig": [
-                        {
-                            "name": "config",
-                            "mountPath": "/etc/prometheus",
-                            "files": [
-                                {
-                                    "path": "prometheus.yml",
-                                    "content": (
-                                        "global:\n"
-                                        "  scrape_interval: 15s\n"
-                                        "  evaluation_interval: 15s\n"
-                                        "alerting:\n"
-                                        "  alertmanagers:\n"
-                                        "    - static_configs:\n"
-                                        "        - targets:\n"
-                                        "rule_files:\n"
-                                        "scrape_configs:\n"
-                                        "  - job_name: 'prometheus'\n"
-                                        "    static_configs:\n"
-                                        "      - targets: [{}]\n".format(
-                                            config.get("default_target")
-                                        )
-                                    ),
-                                }
-                            ],
-                        }
-                    ],
-                    "command": [
-                        "/bin/prometheus",
-                        "--config.file=/etc/prometheus/prometheus.yml",
-                        "--storage.tsdb.path=/prometheus",
-                        "--web.console.libraries=/usr/share/prometheus/console_libraries",
-                        "--web.console.templates=/usr/share/prometheus/consoles",
-                        "--web.route-prefix={}".format(config.get("web_subpath")),
-                        "--web.external-url=http://localhost:{}{}".format(
-                            port, config.get("web_subpath")
-                        ),
-                    ],
-                    "kubernetes": {
-                        "readinessProbe": {
-                            "httpGet": {
-                                "path": "/-/ready",
-                                "port": port,
-                            },
-                            "initialDelaySeconds": 10,
-                            "timeoutSeconds": 30,
-                        },
-                        "livenessProbe": {
-                            "httpGet": {
-                                "path": "/-/healthy",
-                                "port": port,
-                            },
-                            "initialDelaySeconds": 30,
-                            "periodSeconds": 30,
-                        },
-                    },
-                }
-            ],
-            "kubernetesResources": {
-                "ingressResources": [
-                    {
-                        "name": "{}-ingress".format(app_name),
-                        "annotations": {
-                            "nginx.ingress.kubernetes.io/proxy-body-size": str(
-                                config.get("max_file_size")
-                            ),
-                            "nginx.ingress.kubernetes.io/whitelist-source-range": config.get(
-                                "ingress_whitelist_source_range"
-                            ),
-                        },
-                        "spec": {
-                            "rules": [
-                                {
-                                    "host": app_name,
-                                    "http": {
-                                        "paths": [
-                                            {
-                                                "path": "/",
-                                                "backend": {
-                                                    "serviceName": app_name,
-                                                    "servicePort": port,
-                                                },
-                                            }
-                                        ]
-                                    },
-                                }
-                            ],
-                            "tls": [
-                                {
-                                    "hosts": [app_name],
-                                    "secretName": config.get("tls_secret_name"),
-                                }
-                            ],
-                        },
-                    }
-                ],
-            },
-        }
-
-        spec = pod_spec.make_pod_spec(
-            image_info, config, relation_state, app_name, port
-        )
-
-        self.assertDictEqual(expected_result, spec)
-
-    def test_make_pod_spec_without_image_info(self) -> NoReturn:
-        """Testing make pod spec without image_info."""
-        image_info = None
-        config = {
-            "web_subpath": "/",
-            "default_target": "",
-            "site_url": "",
-            "enable_web_admin_api": False,
-        }
-        relation_state = {}
-        app_name = "prometheus"
-        port = 9090
-
-        spec = pod_spec.make_pod_spec(
-            image_info, config, relation_state, app_name, port
-        )
-
-        self.assertIsNone(spec)
-
-    def test_make_pod_spec_without_config(self) -> NoReturn:
-        """Testing make pod spec without config."""
-        image_info = {"upstream-source": "ubuntu/prometheus:latest"}
-        config = {}
-        relation_state = {}
-        app_name = "prometheus"
-        port = 9090
-
-        with self.assertRaises(ValueError):
-            pod_spec.make_pod_spec(image_info, config, relation_state, app_name, port)
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/installers/charm/prometheus/tox.ini b/installers/charm/prometheus/tox.ini
deleted file mode 100644
index 4c7970d..0000000
--- a/installers/charm/prometheus/tox.ini
+++ /dev/null
@@ -1,126 +0,0 @@
-# Copyright 2021 Canonical Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-#
-# For those usages not covered by the Apache License, Version 2.0 please
-# contact: legal@canonical.com
-#
-# To get in touch with the maintainers, please contact:
-# osm-charmers@lists.launchpad.net
-##
-#######################################################################################
-
-[tox]
-envlist = black, cover, flake8, pylint, yamllint, safety
-skipsdist = true
-
-[tox:jenkins]
-toxworkdir = /tmp/.tox
-
-[testenv]
-basepython = python3.8
-setenv = VIRTUAL_ENV={envdir}
-         PYTHONDONTWRITEBYTECODE = 1
-deps =  -r{toxinidir}/requirements.txt
-
-
-#######################################################################################
-[testenv:black]
-deps = black
-commands =
-        black --check --diff src/ tests/
-
-
-#######################################################################################
-[testenv:cover]
-deps =  {[testenv]deps}
-        -r{toxinidir}/requirements-test.txt
-        coverage
-        nose2
-commands =
-        sh -c 'rm -f nosetests.xml'
-        coverage erase
-        nose2 -C --coverage src
-        coverage report --omit='*tests*'
-        coverage html -d ./cover --omit='*tests*'
-        coverage xml -o coverage.xml --omit=*tests*
-whitelist_externals = sh
-
-
-#######################################################################################
-[testenv:flake8]
-deps =  flake8
-        flake8-import-order
-commands =
-        flake8 src/ tests/
-
-
-#######################################################################################
-[testenv:pylint]
-deps =  {[testenv]deps}
-        -r{toxinidir}/requirements-test.txt
-        pylint==2.10.2
-commands =
-    pylint -E src/ tests/
-
-
-#######################################################################################
-[testenv:safety]
-setenv =
-        LC_ALL=C.UTF-8
-        LANG=C.UTF-8
-deps =  {[testenv]deps}
-        safety
-commands =
-        - safety check --full-report
-
-
-#######################################################################################
-[testenv:yamllint]
-deps =  {[testenv]deps}
-        -r{toxinidir}/requirements-test.txt
-        yamllint
-commands = yamllint .
-
-#######################################################################################
-[testenv:build]
-passenv=HTTP_PROXY HTTPS_PROXY NO_PROXY
-whitelist_externals =
-  charmcraft
-  sh
-commands =
-  charmcraft pack
-  sh -c 'ubuntu_version=20.04; \
-        architectures="amd64-aarch64-arm64"; \
-        charm_name=`cat metadata.yaml | grep -E "^name: " | cut -f 2 -d " "`; \
-        mv $charm_name"_ubuntu-"$ubuntu_version-$architectures.charm $charm_name.charm'
-
-#######################################################################################
-[flake8]
-ignore =
-        W291,
-        W293,
-        W503,
-        E123,
-        E125,
-        E226,
-        E241,
-exclude =
-        .git,
-        __pycache__,
-        .tox,
-max-line-length = 120
-show-source = True
-builtins = _
-max-complexity = 10
-import-order-style = google