Tekton task to clean up the vpc resources (#350)

Author: Ganiredi

tests/assets/amazon-eks-vpc.json

@@ -664,6 +664,7 @@
         },
         "PublicSubnet01": {
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPC",
             "Metadata": {
                 "Comment": "Subnet 01"
             },
@@ -701,6 +702,7 @@
         },
         "PublicSubnet02": {
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPCCIDRBlock2",
             "Metadata": {
                 "Comment": "Subnet 02"
             },
@@ -738,6 +740,7 @@
         },
         "PublicSubnet03": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock3",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Subnet 03"
@@ -776,6 +779,7 @@
         },
         "PublicSubnet04": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock4",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Subnet 04"
@@ -814,6 +818,7 @@
         },
         "PrivateSubnet01": {
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPCCIDRBlock5",
             "Metadata": {
                 "Comment": "Private Subnet 01"
             },
@@ -850,6 +855,7 @@
         },
         "PrivateSubnet02": {
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPCCIDRBlock6",
             "Metadata": {
                 "Comment": "Private Subnet 02"
             },
@@ -886,6 +892,7 @@
         },
         "PrivateSubnet03": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock7",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Private Subnet 03"
@@ -924,6 +931,7 @@
         "PrivateSubnet04": {
             "Condition": "HasMoreThan2Azs",
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPCCIDRBlock8",
             "Metadata": {
                 "Comment": "Private Subnet 04"
             },
@@ -961,6 +969,7 @@
         "PrivateSubnet05": {
             "Condition": "HasMoreThan2Azs",
             "Type": "AWS::EC2::Subnet",
+            "DependsOn": "VPCCIDRBlock9",
             "Metadata": {
                 "Comment": "Private Subnet 05"
             },
@@ -997,6 +1006,7 @@
         },
         "PrivateSubnet06": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock10",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Private Subnet 06"
@@ -1034,6 +1044,7 @@
         },
         "PrivateSubnet07": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock11",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Private Subnet 07"
@@ -1071,6 +1082,7 @@
         },
         "PrivateSubnet08": {
             "Condition": "HasMoreThan2Azs",
+            "DependsOn": "VPCCIDRBlock12",
             "Type": "AWS::EC2::Subnet",
             "Metadata": {
                 "Comment": "Private Subnet 08"

tests/tasks/teardown/awscli-vpc-delete.yaml

@@ -0,0 +1,34 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: awscli-delete-vpc
+  namespace: tekton-pipelines
+spec:
+  description: |
+    This Task can be used to delete CloudFormation stack containing VPC resources that was used for EKS clusters.
+  params:
+    - name: stack-name
+      description: The name of the VPC name you want to delete.
+    - name: region
+      default: "us-west-2"
+  steps:
+    - name: awscli-delete-vpc
+      image: alpine/k8s:1.22.6
+      script: |
+        #!/bin/bash
+        echo "Approving KCM requests"
+        kubectl certificate approve $(kubectl get csr | grep "Pending" | awk '{print $1}')  2>/dev/null || true
+        aws sts get-caller-identity 
+        # Check if the stack exists
+        aws cloudformation --region $(params.region) describe-stacks --stack-name $(params.stack-name)
+        if [ $? -ne 0 ]; then
+          echo "Stack $(params.stack-name) not found. Exiting..."
+          exit 1
+        else
+          echo "Deleting stack $(params.stack-name)..."
+        fi
+        #Deletes the CFN stack
+        aws cloudformation delete-stack --region $(params.region) --stack-name $(params.stack-name) 
+        # Wait for the stack to be deleted
+        aws cloudformation wait stack-delete-complete --region $(params.region) --stack-name $(params.stack-name)
+        echo "Stack deleted successfully!"