cloud-scripts/delete-k8s.sh

   1 #!/usr/bin/env bash
   2 #######################################################################################
   3 # Copyright ETSI Contributors and Others.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #    http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  14 # implied.
  15 # See the License for the specific language governing permissions and
  16 # limitations under the License.
  17 #######################################################################################
  18
  19 # Delete a VM and its resources (nic, disk, nsg, public IP) on Azure.
  20 # To do this it reads the following environment variables:
  21 # - K8S_NAME: name of the VM
  22 # - RESOURCE_GROUP: name of the resource-group where the VM is
  23 function delete_azure_vm {
  24     set -eux
  25     INTERFACE_ID=$(az vm show --resource-group ${RESOURCE_GROUP} --name ${K8S_NAME} --query networkProfile.networkInterfaces[0].id)
  26     INTERFACE_ID=${INTERFACE_ID:1:-1}
  27     OS_DISK_ID=$(az vm show --resource-group ${RESOURCE_GROUP} --name ${K8S_NAME} --query storageProfile.osDisk.managedDisk.id)
  28     OS_DISK_ID=${OS_DISK_ID:1:-1}
  29     SECURITY_GROUP_ID=$(az network nic show --id ${INTERFACE_ID} --query networkSecurityGroup.id)
  30     SECURITY_GROUP_ID=${SECURITY_GROUP_ID:1:-1}
  31     PUBLIC_IP_ID=$(az network nic show --id ${INTERFACE_ID} --query ipConfigurations[0].publicIpAddress.id)
  32     PUBLIC_IP_ID=${PUBLIC_IP_ID:1:-1}
  33     az vm delete --resource-group ${RESOURCE_GROUP} --name ${K8S_NAME} --yes
  34     az network nic delete --id ${INTERFACE_ID}
  35     az disk delete --id ${OS_DISK_ID} --yes
  36     az network nsg delete --id ${SECURITY_GROUP_ID}
  37     if [ -n "${PUBLIC_IP_ID}" ]; then
  38         az network public-ip delete --id ${PUBLIC_IP_ID}
  39     fi
  40 }
  41
  42 # Delete an existing AKS cluster and its subnet.
  43 # Required the following environment variables:
  44 # - K8S_NAME: name of the AKS
  45 # - RESOURCE_GROUP: name of the resource-group where the AKS was created
  46 function delete_azure_aks {
  47     SUBNET_ID=$(az aks show --resource-group "${RESOURCE_GROUP}" --name ${K8S_NAME} --query agentPoolProfiles[].vnetSubnetId -o tsv)
  48     az aks delete -y --resource-group "${RESOURCE_GROUP}" --name "${K8S_NAME}"
  49     az network vnet subnet delete --ids "${SUBNET_ID}"
  50 }
  51
  52 # Delete a VM on GCP.
  53 # To do this it reads the following environment variables:
  54 # - K8S_NAME: name of the VM
  55 # - GCP_PROJECT: name of project where the VM is
  56 # - GCP_ZONE: name of the zone
  57 function delete_gcp_vm {
  58     gcloud compute instances delete "${K8S_NAME}" --project="${GCP_PROJECT}" --zone="${GCP_ZONE}" --delete-disks all -q
  59 }
  60
  61 # Delete an existing GKE cluster.
  62 # Required the following environment variables:
  63 # - K8S_NAME: name of the AKS
  64 # - GCP_PROJECT: name of project where the VM is
  65 # - GCP_ZONE: name of the zone
  66 function delete_gcp_gke {
  67    gcloud container clusters delete "${K8S_NAME}" --project="${GCP_PROJECT}" --zone="${GCP_ZONE}" -q
  68 }
  69
  70 # If there is an argument, it must be the cluster name
  71 if [ -n "${1:-}" ]; then
  72     K8S_NAME=$1
  73 else
  74     K8S_NAME="${K8S_IMAGE_NAME}"
  75 fi
  76 # Default USE_PAAS_K8S is "FALSE"
  77 if [ -z "${USE_PAAS_K8S}" ]; then
  78     USE_PAAS_K8S="FALSE"
  79 fi
  80 # Branch by USE_PAAS_K8S and CLOUD_TYPE values
  81 if [ "${USE_PAAS_K8S}" == "FALSE" ]; then
  82     # Deletes k8s cluster in a cloud's VM
  83     echo "Deleting IaaS k8s cluster in ${CLOUD_TYPE}"
  84     if [ "${CLOUD_TYPE}" == "azure" ]; then
  85         # Azure VIM
  86         delete_azure_vm
  87     elif [ "${CLOUD_TYPE}" == "gcp" ]; then
  88         # GCP VIM
  89         delete_gcp_vm
  90     else
  91         echo "Invalid cloud type: ${CLOUD_TYPE}"
  92     fi
  93 else
  94     # Deletes k8s cluster as PaaS in cloud
  95     if [ "${CLOUD_TYPE}" == "azure" ]; then
  96         echo "Deleting PaaS k8s cluster in Azure"
  97         delete_azure_aks
  98     elif [ "${CLOUD_TYPE}" == "gcp" ]; then
  99         echo "Deleting PaaS k8s cluster in GCP"
 100         delete_gcp_gke
 101     else
 102         echo "Invalid cloud type: ${CLOUD_TYPE}"
 103     fi
 104
 105 fi
 106