Add worflows to create and configure and destroy the cluster (#6)

Author: acs

.github/scripts/create_cluster.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# Terraform install
+wget -q https://releases.hashicorp.com/terraform/1.0.11/terraform_1.0.11_linux_amd64.zip
+unzip -o terraform_1.0.11_linux_amd64.zip -d ~
+
+# Use Terraform to create the cluster
+cd terraform/terraform_aws
+~/terraform init
+~/terraform apply -var="cluster_size=3" -auto-approve
+~/terraform output | grep '"' | awk -F '"' 'BEGIN {i=1; print "[cluster]"} {print "node0" i++ " ansible_host="$2}' > ../../terraform/ansible/hosts.ini
+cd ../..
+
+# Wait until docker is installed in all the nodes
+echo "Waiting 30s for docker install process in the cluster nodes"
+sleep 30
+
+# Ansible configuration
+mkdir ~/.ssh
+
+echo $VAULT_PASS > ~/vault_passowrd_file.txt
+
+ansible-vault decrypt \
+  --vault-password-file=~/vault_passowrd_file.txt terraform/ansible/id_rsa_devops_encrypted \
+  --output=~/.ssh/id_rsa
+
+rm ~/vault_passowrd_file.txt
+
+# Use Ansible to configure the cluster
+ansible-playbook -u ubuntu -i terraform/ansible/hosts.ini terraform/ansible/swarm/create_swarm.yml

.github/scripts/destroy_cluster.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+# Terraform install
+wget -q https://releases.hashicorp.com/terraform/1.0.11/terraform_1.0.11_linux_amd64.zip
+unzip -o terraform_1.0.11_linux_amd64.zip -d ~
+
+# Use Terraform to collect the cluster ips
+cd terraform/pipeline
+~/terraform init
+~/terraform apply -auto-approve
+~/terraform output | grep '"' | awk -F '"' 'BEGIN {i=1; print "[cluster]"} {print "node0" i++ " ansible_host="$2}' > ../../terraform/ansible/hosts.ini
+cd ../..
+
+# Ansible configuration
+mkdir ~/.ssh
+
+echo $VAULT_PASS > ~/vault_passowrd_file.txt
+
+ansible-vault decrypt \
+  --vault-password-file=~/vault_passowrd_file.txt terraform/ansible/id_rsa_devops_encrypted \
+  --output=~/.ssh/id_rsa
+
+rm ~/vault_passowrd_file.txt
+
+# Use Ansible to configure the cluster
+ansible-playbook -u ubuntu -i terraform/ansible/hosts.ini terraform/ansible/swarm/destroy_swarm.yml
+
+# Use Terraform to destroy the cluster
+cd terraform/terraform_aws
+~/terraform init
+~/terraform destroy -auto-approve

.github/workflows/create-cluster.yml

@@ -0,0 +1,17 @@
+name: Create the cluster
+on:
+  release:
+jobs:
+  deploy:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v2
+
+      - name: Create the cluster
+        run: .github/scripts/create_cluster.sh
+        env:
+          VAULT_PASS: ${{ secrets.VAULT_PASS }}
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+

.github/workflows/deploy.yml

@@ -1,4 +1,4 @@
-name: Execute Ansible scripts
+name: Deploy services to cluster
 on:
   push:
     branches:

.github/workflows/destroy-cluster.yml

@@ -0,0 +1,17 @@
+name: Destroy the cluster
+on:
+  release:
+jobs:
+  deploy:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v2
+
+      - name: Destroy the cluster
+        run: .github/scripts/destroy_cluster.sh
+        env:
+          VAULT_PASS: ${{ secrets.VAULT_PASS }}
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+

terraform/terraform_aws/inputs.tf

@@ -11,5 +11,5 @@ variable "tag" {
 variable "cluster_size" {
   type = number
   description = "Number of nodes in the cluster"
-  default = 5
+  default = 2
 }