| # Copyright 2019 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. |
| |
| import concurrent |
| from .exceptions import NotImplemented |
| |
| import juju |
| # from juju.bundle import BundleHandler |
| from juju.controller import Controller |
| from juju.model import Model |
| from juju.errors import JujuAPIError, JujuError |
| |
| import logging |
| |
| from n2vc.k8s_conn import K8sConnector |
| |
| import os |
| # import re |
| # import ssl |
| import subprocess |
| # from .vnf import N2VC |
| |
| import uuid |
| import yaml |
| |
| |
| class K8sJujuConnector(K8sConnector): |
| def __init__( |
| self, |
| fs, |
| kubectl_command='/usr/bin/kubectl', |
| log=None |
| ): |
| """ |
| |
| :param kubectl_command: path to kubectl executable |
| :param helm_command: path to helm executable |
| :param fs: file system for kubernetes and helm configuration |
| :param log: logger |
| """ |
| |
| # parent class |
| K8sConnector.__init__( |
| self, |
| kubectl_command=kubectl_command, |
| fs=fs, |
| log=log, |
| ) |
| |
| self.info('Initializing K8S Juju connector') |
| |
| self.authenticated = False |
| self.models = {} |
| self.log = logging.getLogger(__name__) |
| self.info('K8S Juju connector initialized') |
| |
| """Initialization""" |
| async def init_env( |
| self, |
| k8s_creds: dict, |
| namespace: str = 'kube-system', |
| reuse_cluster_uuid: str = None, |
| ) -> str: |
| """Initialize a Kubernetes environment |
| |
| :param k8s_creds dict: A dictionary containing the Kubernetes cluster |
| configuration |
| :param namespace str: The Kubernetes namespace to initialize |
| |
| :return: UUID of the k8s context or raises an exception |
| """ |
| |
| """Bootstrapping |
| |
| Bootstrapping cannot be done, by design, through the API. We need to |
| use the CLI tools. |
| """ |
| # TODO: The path may change |
| jujudir = "/snap/bin" |
| |
| self.k8scli = "{}/juju".format(jujudir) |
| |
| """ |
| WIP: Workflow |
| |
| 1. Has the environment already been bootstrapped? |
| - Check the database to see if we have a record for this env |
| |
| 2. If this is a new env, create it |
| - Add the k8s cloud to Juju |
| - Bootstrap |
| - Record it in the database |
| |
| 3. Connect to the Juju controller for this cloud |
| |
| """ |
| # cluster_uuid = reuse_cluster_uuid |
| # if not cluster_uuid: |
| # cluster_uuid = str(uuid4()) |
| |
| ################################################## |
| # TODO: Pull info from db based on the namespace # |
| ################################################## |
| |
| if not reuse_cluster_uuid: |
| # This is a new cluster, so bootstrap it |
| |
| cluster_uuid = str(uuid.uuid4()) |
| |
| # Add k8s cloud to Juju (unless it's microk8s) |
| |
| # Does the kubeconfig contain microk8s? |
| microk8s = self.is_microk8s_by_credentials(k8s_creds) |
| |
| if not microk8s: |
| # Name the new k8s cloud |
| k8s_cloud = "{}-k8s".format(namespace) |
| |
| await self.add_k8s(k8s_cloud, k8s_creds) |
| |
| # Bootstrap Juju controller |
| self.bootstrap(k8s_cloud, cluster_uuid) |
| else: |
| # k8s_cloud = 'microk8s-test' |
| k8s_cloud = "{}-k8s".format(namespace) |
| |
| await self.add_k8s(k8s_cloud, k8s_creds) |
| |
| await self.bootstrap(k8s_cloud, cluster_uuid) |
| |
| # Get the controller information |
| |
| # Parse ~/.local/share/juju/controllers.yaml |
| # controllers.testing.api-endpoints|ca-cert|uuid |
| with open(os.path.expanduser( |
| "~/.local/share/juju/controllers.yaml" |
| )) as f: |
| controllers = yaml.load(f, Loader=yaml.Loader) |
| controller = controllers['controllers'][cluster_uuid] |
| endpoints = controller['api-endpoints'] |
| self.juju_endpoint = endpoints[0] |
| self.juju_ca_cert = controller['ca-cert'] |
| |
| # Parse ~/.local/share/juju/accounts |
| # controllers.testing.user|password |
| with open(os.path.expanduser( |
| "~/.local/share/juju/accounts.yaml" |
| )) as f: |
| controllers = yaml.load(f, Loader=yaml.Loader) |
| controller = controllers['controllers'][cluster_uuid] |
| |
| self.juju_user = controller['user'] |
| self.juju_secret = controller['password'] |
| |
| print("user: {}".format(self.juju_user)) |
| print("secret: {}".format(self.juju_secret)) |
| print("endpoint: {}".format(self.juju_endpoint)) |
| print("ca-cert: {}".format(self.juju_ca_cert)) |
| |
| # raise Exception("EOL") |
| |
| self.juju_public_key = None |
| |
| config = { |
| 'endpoint': self.juju_endpoint, |
| 'username': self.juju_user, |
| 'secret': self.juju_secret, |
| 'cacert': self.juju_ca_cert, |
| 'namespace': namespace, |
| 'microk8s': microk8s, |
| } |
| |
| # Store the cluster configuration so it |
| # can be used for subsequent calls |
| await self.set_config(cluster_uuid, config) |
| |
| else: |
| # This is an existing cluster, so get its config |
| cluster_uuid = reuse_cluster_uuid |
| |
| config = self.get_config(cluster_uuid) |
| |
| self.juju_endpoint = config['endpoint'] |
| self.juju_user = config['username'] |
| self.juju_secret = config['secret'] |
| self.juju_ca_cert = config['cacert'] |
| self.juju_public_key = None |
| |
| # Login to the k8s cluster |
| if not self.authenticated: |
| await self.login() |
| |
| # We're creating a new cluster |
| print("Getting model {}".format(self.get_namespace(cluster_uuid))) |
| model = await self.get_model(self.get_namespace(cluster_uuid)) |
| |
| # Disconnect from the model |
| if model and model.is_connected(): |
| await model.disconnect() |
| |
| return cluster_uuid |
| |
| """Repo Management""" |
| async def repo_add( |
| self, |
| name: str, |
| url: str, |
| type: str = "charm", |
| ): |
| raise NotImplemented() |
| |
| async def repo_list(self): |
| raise NotImplemented() |
| |
| async def repo_remove( |
| self, |
| name: str, |
| ): |
| raise NotImplemented() |
| |
| """Reset""" |
| async def reset( |
| self, |
| cluster_uuid: str, |
| ) -> bool: |
| """Reset a cluster |
| |
| Resets the Kubernetes cluster by removing the model that represents it. |
| |
| :param cluster_uuid str: The UUID of the cluster to reset |
| :return: Returns True if successful or raises an exception. |
| """ |
| |
| try: |
| if not self.authenticated: |
| await self.login() |
| |
| if self.controller.is_connected(): |
| # Destroy the model |
| namespace = self.get_namespace(cluster_uuid) |
| if await self.has_model(namespace): |
| print("[reset] Destroying model") |
| await self.controller.destroy_model( |
| namespace, |
| destroy_storage=True |
| ) |
| |
| # Disconnect from the controller |
| print("[reset] Disconnecting controller") |
| await self.controller.disconnect() |
| |
| # Destroy the controller (via CLI) |
| print("[reset] Destroying controller") |
| await self.destroy_controller(cluster_uuid) |
| |
| """Remove the k8s cloud |
| |
| Only remove the k8s cloud if it's not a microk8s cloud, |
| since microk8s is a built-in cloud type. |
| """ |
| # microk8s = self.is_microk8s_by_cluster_uuid(cluster_uuid) |
| # if not microk8s: |
| print("[reset] Removing k8s cloud") |
| namespace = self.get_namespace(cluster_uuid) |
| k8s_cloud = "{}-k8s".format(namespace) |
| await self.remove_cloud(k8s_cloud) |
| |
| except Exception as ex: |
| print("Caught exception during reset: {}".format(ex)) |
| |
| """Deployment""" |
| async def install( |
| self, |
| cluster_uuid: str, |
| kdu_model: str, |
| atomic: bool = True, |
| timeout: int = None, |
| params: dict = None, |
| ) -> str: |
| """Install a bundle |
| |
| :param cluster_uuid str: The UUID of the cluster to install to |
| :param kdu_model str: The name or path of a bundle to install |
| :param atomic bool: If set, waits until the model is active and resets |
| the cluster on failure. |
| :param timeout int: The time, in seconds, to wait for the install |
| to finish |
| :param params dict: Key-value pairs of instantiation parameters |
| |
| :return: If successful, returns ? |
| """ |
| |
| if not self.authenticated: |
| print("[install] Logging in to the controller") |
| await self.login() |
| |
| ## |
| # Get or create the model, based on the namespace the cluster was |
| # instantiated with. |
| namespace = self.get_namespace(cluster_uuid) |
| model = await self.get_model(namespace) |
| if not model: |
| # Create the new model |
| model = await self.add_model(namespace) |
| |
| if model: |
| # TODO: Instantiation parameters |
| |
| print("[install] deploying {}".format(kdu_model)) |
| await model.deploy(kdu_model) |
| |
| # Get the application |
| if atomic: |
| # applications = model.applications |
| print("[install] Applications: {}".format(model.applications)) |
| for name in model.applications: |
| print("[install] Waiting for {} to settle".format(name)) |
| application = model.applications[name] |
| try: |
| # It's not enough to wait for all units to be active; |
| # the application status needs to be active as well. |
| print("Waiting for all units to be active...") |
| await model.block_until( |
| lambda: all( |
| unit.agent_status == 'idle' |
| and application.status in ['active', 'unknown'] |
| and unit.workload_status in [ |
| 'active', 'unknown' |
| ] for unit in application.units |
| ), |
| timeout=timeout |
| ) |
| print("All units active.") |
| |
| except concurrent.futures._base.TimeoutError: |
| print("[install] Timeout exceeded; resetting cluster") |
| await self.reset(cluster_uuid) |
| return False |
| |
| # Wait for the application to be active |
| if model.is_connected(): |
| print("[install] Disconnecting model") |
| await model.disconnect() |
| |
| return True |
| raise Exception("Unable to install") |
| |
| async def instances_list( |
| self, |
| cluster_uuid: str |
| ) -> list: |
| """ |
| returns a list of deployed releases in a cluster |
| |
| :param cluster_uuid: the cluster |
| :return: |
| """ |
| return [] |
| |
| async def upgrade( |
| self, |
| cluster_uuid: str, |
| kdu_instance: str, |
| kdu_model: str = None, |
| params: dict = None, |
| ) -> str: |
| """Upgrade a model |
| |
| :param cluster_uuid str: The UUID of the cluster to upgrade |
| :param kdu_instance str: The unique name of the KDU instance |
| :param kdu_model str: The name or path of the bundle to upgrade to |
| :param params dict: Key-value pairs of instantiation parameters |
| |
| :return: If successful, reference to the new revision number of the |
| KDU instance. |
| """ |
| |
| # TODO: Loop through the bundle and upgrade each charm individually |
| |
| """ |
| The API doesn't have a concept of bundle upgrades, because there are |
| many possible changes: charm revision, disk, number of units, etc. |
| |
| As such, we are only supporting a limited subset of upgrades. We'll |
| upgrade the charm revision but leave storage and scale untouched. |
| |
| Scale changes should happen through OSM constructs, and changes to |
| storage would require a redeployment of the service, at least in this |
| initial release. |
| """ |
| namespace = self.get_namespace(cluster_uuid) |
| model = await self.get_model(namespace) |
| |
| with open(kdu_model, 'r') as f: |
| bundle = yaml.load(f, Loader=yaml.FullLoader) |
| |
| """ |
| { |
| 'description': 'Test bundle', |
| 'bundle': 'kubernetes', |
| 'applications': { |
| 'mariadb-k8s': { |
| 'charm': 'cs:~charmed-osm/mariadb-k8s-20', |
| 'scale': 1, |
| 'options': { |
| 'password': 'manopw', |
| 'root_password': 'osm4u', |
| 'user': 'mano' |
| }, |
| 'series': 'kubernetes' |
| } |
| } |
| } |
| """ |
| # TODO: This should be returned in an agreed-upon format |
| for name in bundle['applications']: |
| print(model.applications) |
| application = model.applications[name] |
| print(application) |
| |
| path = bundle['applications'][name]['charm'] |
| |
| try: |
| await application.upgrade_charm(switch=path) |
| except juju.errors.JujuError as ex: |
| if 'already running charm' in str(ex): |
| # We're already running this version |
| pass |
| |
| await model.disconnect() |
| |
| return True |
| raise NotImplemented() |
| |
| """Rollback""" |
| async def rollback( |
| self, |
| cluster_uuid: str, |
| kdu_instance: str, |
| revision: int = 0, |
| ) -> str: |
| """Rollback a model |
| |
| :param cluster_uuid str: The UUID of the cluster to rollback |
| :param kdu_instance str: The unique name of the KDU instance |
| :param revision int: The revision to revert to. If omitted, rolls back |
| the previous upgrade. |
| |
| :return: If successful, returns the revision of active KDU instance, |
| or raises an exception |
| """ |
| raise NotImplemented() |
| |
| """Deletion""" |
| async def uninstall( |
| self, |
| cluster_uuid: str, |
| kdu_instance: str, |
| ) -> bool: |
| """Uninstall a KDU instance |
| |
| :param cluster_uuid str: The UUID of the cluster to uninstall |
| :param kdu_instance str: The unique name of the KDU instance |
| |
| :return: Returns True if successful, or raises an exception |
| """ |
| removed = False |
| |
| # Remove an application from the model |
| model = await self.get_model(self.get_namespace(cluster_uuid)) |
| |
| if model: |
| # Get the application |
| if kdu_instance not in model.applications: |
| # TODO: Raise a named exception |
| raise Exception("Application not found.") |
| |
| application = model.applications[kdu_instance] |
| |
| # Destroy the application |
| await application.destroy() |
| |
| # TODO: Verify removal |
| |
| removed = True |
| return removed |
| |
| """Introspection""" |
| async def inspect_kdu( |
| self, |
| kdu_model: str, |
| ) -> dict: |
| """Inspect a KDU |
| |
| Inspects a bundle and returns a dictionary of config parameters and |
| their default values. |
| |
| :param kdu_model str: The name or path of the bundle to inspect. |
| |
| :return: If successful, returns a dictionary of available parameters |
| and their default values. |
| """ |
| |
| kdu = {} |
| with open(kdu_model, 'r') as f: |
| bundle = yaml.load(f, Loader=yaml.FullLoader) |
| |
| """ |
| { |
| 'description': 'Test bundle', |
| 'bundle': 'kubernetes', |
| 'applications': { |
| 'mariadb-k8s': { |
| 'charm': 'cs:~charmed-osm/mariadb-k8s-20', |
| 'scale': 1, |
| 'options': { |
| 'password': 'manopw', |
| 'root_password': 'osm4u', |
| 'user': 'mano' |
| }, |
| 'series': 'kubernetes' |
| } |
| } |
| } |
| """ |
| # TODO: This should be returned in an agreed-upon format |
| kdu = bundle['applications'] |
| |
| return kdu |
| |
| async def help_kdu( |
| self, |
| kdu_model: str, |
| ) -> str: |
| """View the README |
| |
| If available, returns the README of the bundle. |
| |
| :param kdu_model str: The name or path of a bundle |
| |
| :return: If found, returns the contents of the README. |
| """ |
| readme = None |
| |
| files = ['README', 'README.txt', 'README.md'] |
| path = os.path.dirname(kdu_model) |
| for file in os.listdir(path): |
| if file in files: |
| with open(file, 'r') as f: |
| readme = f.read() |
| break |
| |
| return readme |
| |
| async def status_kdu( |
| self, |
| cluster_uuid: str, |
| kdu_instance: str, |
| ) -> dict: |
| """Get the status of the KDU |
| |
| Get the current status of the KDU instance. |
| |
| :param cluster_uuid str: The UUID of the cluster |
| :param kdu_instance str: The unique id of the KDU instance |
| |
| :return: Returns a dictionary containing namespace, state, resources, |
| and deployment_time. |
| """ |
| status = {} |
| |
| model = await self.get_model(self.get_namespace(cluster_uuid)) |
| |
| # model = await self.get_model_by_uuid(cluster_uuid) |
| if model: |
| model_status = await model.get_status() |
| status = model_status.applications |
| |
| for name in model_status.applications: |
| application = model_status.applications[name] |
| status[name] = { |
| 'status': application['status']['status'] |
| } |
| |
| if model.is_connected(): |
| await model.disconnect() |
| |
| return status |
| |
| # Private methods |
| async def add_k8s( |
| self, |
| cloud_name: str, |
| credentials: dict, |
| ) -> bool: |
| """Add a k8s cloud to Juju |
| |
| Adds a Kubernetes cloud to Juju, so it can be bootstrapped with a |
| Juju Controller. |
| |
| :param cloud_name str: The name of the cloud to add. |
| :param credentials dict: A dictionary representing the output of |
| `kubectl config view --raw`. |
| |
| :returns: True if successful, otherwise raises an exception. |
| """ |
| cmd = [self.k8scli, "add-k8s", "--local", cloud_name] |
| |
| p = subprocess.run( |
| cmd, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, |
| input=yaml.dump(credentials, Dumper=yaml.Dumper), |
| encoding='ascii' |
| ) |
| retcode = p.returncode |
| |
| if retcode > 0: |
| raise Exception(p.stderr) |
| return True |
| |
| async def add_model( |
| self, |
| model_name: str |
| ) -> juju.model.Model: |
| """Adds a model to the controller |
| |
| Adds a new model to the Juju controller |
| |
| :param model_name str: The name of the model to add. |
| :returns: The juju.model.Model object of the new model upon success or |
| raises an exception. |
| """ |
| if not self.authenticated: |
| await self.login() |
| |
| model = await self.controller.add_model( |
| model_name, |
| config={'authorized-keys': self.juju_public_key} |
| ) |
| return model |
| |
| async def bootstrap( |
| self, |
| cloud_name: str, |
| cluster_uuid: str |
| ) -> bool: |
| """Bootstrap a Kubernetes controller |
| |
| Bootstrap a Juju controller inside the Kubernetes cluster |
| |
| :param cloud_name str: The name of the cloud. |
| :param cluster_uuid str: The UUID of the cluster to bootstrap. |
| :returns: True upon success or raises an exception. |
| """ |
| cmd = [self.k8scli, "bootstrap", cloud_name, cluster_uuid] |
| print("Bootstrapping controller {} in cloud {}".format( |
| cluster_uuid, cloud_name |
| )) |
| |
| p = subprocess.run( |
| cmd, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, |
| encoding='ascii' |
| ) |
| retcode = p.returncode |
| |
| if retcode > 0: |
| # |
| if 'already exists' not in p.stderr: |
| raise Exception(p.stderr) |
| |
| return True |
| |
| async def destroy_controller( |
| self, |
| cluster_uuid: str |
| ) -> bool: |
| """Destroy a Kubernetes controller |
| |
| Destroy an existing Kubernetes controller. |
| |
| :param cluster_uuid str: The UUID of the cluster to bootstrap. |
| :returns: True upon success or raises an exception. |
| """ |
| cmd = [ |
| self.k8scli, |
| "destroy-controller", |
| "--destroy-all-models", |
| "--destroy-storage", |
| "-y", |
| cluster_uuid |
| ] |
| |
| p = subprocess.run( |
| cmd, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, |
| encoding='ascii' |
| ) |
| retcode = p.returncode |
| |
| if retcode > 0: |
| # |
| if 'already exists' not in p.stderr: |
| raise Exception(p.stderr) |
| |
| def get_config( |
| self, |
| cluster_uuid: str, |
| ) -> dict: |
| """Get the cluster configuration |
| |
| Gets the configuration of the cluster |
| |
| :param cluster_uuid str: The UUID of the cluster. |
| :return: A dict upon success, or raises an exception. |
| """ |
| cluster_config = "{}/{}.yaml".format(self.fs.path, cluster_uuid) |
| if os.path.exists(cluster_config): |
| with open(cluster_config, 'r') as f: |
| config = yaml.load(f.read(), Loader=yaml.FullLoader) |
| return config |
| else: |
| raise Exception( |
| "Unable to locate configuration for cluster {}".format( |
| cluster_uuid |
| ) |
| ) |
| |
| async def get_model( |
| self, |
| model_name: str, |
| ) -> juju.model.Model: |
| """Get a model from the Juju Controller. |
| |
| Note: Model objects returned must call disconnected() before it goes |
| out of scope. |
| |
| :param model_name str: The name of the model to get |
| :return The juju.model.Model object if found, or None. |
| """ |
| if not self.authenticated: |
| await self.login() |
| |
| model = None |
| models = await self.controller.list_models() |
| |
| if model_name in models: |
| model = await self.controller.get_model( |
| model_name |
| ) |
| return model |
| |
| def get_namespace( |
| self, |
| cluster_uuid: str, |
| ) -> str: |
| """Get the namespace UUID |
| Gets the namespace's unique name |
| |
| :param cluster_uuid str: The UUID of the cluster |
| :returns: The namespace UUID, or raises an exception |
| """ |
| config = self.get_config(cluster_uuid) |
| |
| # Make sure the name is in the config |
| if 'namespace' not in config: |
| raise Exception("Namespace not found.") |
| |
| # TODO: We want to make sure this is unique to the cluster, in case |
| # the cluster is being reused. |
| # Consider pre/appending the cluster id to the namespace string |
| return config['namespace'] |
| |
| async def has_model( |
| self, |
| model_name: str |
| ) -> bool: |
| """Check if a model exists in the controller |
| |
| Checks to see if a model exists in the connected Juju controller. |
| |
| :param model_name str: The name of the model |
| :return: A boolean indicating if the model exists |
| """ |
| models = await self.controller.list_models() |
| |
| if model_name in models: |
| return True |
| return False |
| |
| def is_microk8s_by_cluster_uuid( |
| self, |
| cluster_uuid: str, |
| ) -> bool: |
| """Check if a cluster is micro8s |
| |
| Checks if a cluster is running microk8s |
| |
| :param cluster_uuid str: The UUID of the cluster |
| :returns: A boolean if the cluster is running microk8s |
| """ |
| config = self.get_config(cluster_uuid) |
| return config['microk8s'] |
| |
| def is_microk8s_by_credentials( |
| self, |
| credentials: dict, |
| ) -> bool: |
| """Check if a cluster is micro8s |
| |
| Checks if a cluster is running microk8s |
| |
| :param credentials dict: A dictionary containing the k8s credentials |
| :returns: A boolean if the cluster is running microk8s |
| """ |
| for context in credentials['contexts']: |
| if 'microk8s' in context['name']: |
| return True |
| |
| return False |
| |
| async def login(self): |
| """Login to the Juju controller.""" |
| |
| if self.authenticated: |
| return |
| |
| self.connecting = True |
| |
| self.controller = Controller() |
| |
| if self.juju_secret: |
| self.log.debug( |
| "Connecting to controller... ws://{} as {}/{}".format( |
| self.juju_endpoint, |
| self.juju_user, |
| self.juju_secret, |
| ) |
| ) |
| try: |
| await self.controller.connect( |
| endpoint=self.juju_endpoint, |
| username=self.juju_user, |
| password=self.juju_secret, |
| cacert=self.juju_ca_cert, |
| ) |
| self.authenticated = True |
| self.log.debug("JujuApi: Logged into controller") |
| except Exception as ex: |
| print(ex) |
| self.log.debug("Caught exception: {}".format(ex)) |
| pass |
| else: |
| self.log.fatal("VCA credentials not configured.") |
| self.authenticated = False |
| |
| async def logout(self): |
| """Logout of the Juju controller.""" |
| print("[logout]") |
| if not self.authenticated: |
| return False |
| |
| for model in self.models: |
| print("Logging out of model {}".format(model)) |
| await self.models[model].disconnect() |
| |
| if self.controller: |
| self.log.debug("Disconnecting controller {}".format( |
| self.controller |
| )) |
| await self.controller.disconnect() |
| self.controller = None |
| |
| self.authenticated = False |
| |
| async def remove_cloud( |
| self, |
| cloud_name: str, |
| ) -> bool: |
| """Remove a k8s cloud from Juju |
| |
| Removes a Kubernetes cloud from Juju. |
| |
| :param cloud_name str: The name of the cloud to add. |
| |
| :returns: True if successful, otherwise raises an exception. |
| """ |
| |
| # Remove the bootstrapped controller |
| cmd = [self.k8scli, "remove-k8s", "--client", cloud_name] |
| p = subprocess.run( |
| cmd, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, |
| encoding='ascii' |
| ) |
| retcode = p.returncode |
| |
| if retcode > 0: |
| raise Exception(p.stderr) |
| |
| # Remove the cloud from the local config |
| cmd = [self.k8scli, "remove-cloud", "--client", cloud_name] |
| p = subprocess.run( |
| cmd, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, |
| encoding='ascii' |
| ) |
| retcode = p.returncode |
| |
| if retcode > 0: |
| raise Exception(p.stderr) |
| |
| |
| return True |
| |
| async def set_config( |
| self, |
| cluster_uuid: str, |
| config: dict, |
| ) -> bool: |
| """Save the cluster configuration |
| |
| Saves the cluster information to the file store |
| |
| :param cluster_uuid str: The UUID of the cluster |
| :param config dict: A dictionary containing the cluster configuration |
| :returns: Boolean upon success or raises an exception. |
| """ |
| |
| cluster_config = "{}/{}.yaml".format(self.fs.path, cluster_uuid) |
| if not os.path.exists(cluster_config): |
| print("Writing config to {}".format(cluster_config)) |
| with open(cluster_config, 'w') as f: |
| f.write(yaml.dump(config, Dumper=yaml.Dumper)) |
| |
| return True |