Initial commit

Author: rajat-tomar

.gitignore

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+.idea/
+terraform.tfstate*
+.terraform*

README.md

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+# gitlab-runner

main.tf

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+resource "aws_key_pair" "ansible" {
+  public_key = "ssh-rsa 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 ansible"
+  key_name   = "ansible"
+
+  tags = {
+    Name      = "ansible"
+    ManagedBy = "Terraform"
+  }
+}
+
+resource "aws_instance" "terraform-gitlab-docker-runner" {
+  ami                         = "ami-074cc9cf7a6bfbd02"
+  instance_type               = "c6g.medium"
+  key_name                    = aws_key_pair.ansible.id
+  vpc_security_group_ids      = ["sg-0ecbf0cc9789639b8"]
+  subnet_id                   = "subnet-0add22dd44185ea41"
+  associate_public_ip_address = false
+
+  provisioner "local-exec" {
+    command = "ansible-playbook playbooks/gitlab_runner.yaml -i ${self.private_ip}, -u ubuntu --private-key '/Users/rajattomar/.ssh/ansible/id_rsa' --extra-vars 'ip=${self.private_ip}'"
+  }
+
+  tags = {
+    Name      = "gitlab-docker-runner"
+    ManagedBy = "Terraform"
+  }
+}

playbooks/gitlab_runner.yaml

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+- hosts: all
+  gather_facts: no
+  vars:
+    ansible_host_key_checking: false
+  tasks:
+    - local_action: wait_for port=22 host="{{ ip }}" search_regex=OpenSSH delay=10
+
+    - name: Update & Upgrade apt packages
+      become: true
+      become_method: sudo
+      apt:
+        upgrade: yes
+        update_cache: yes
+        cache_valid_time: 86400
+
+    - name: Install Docker
+      become: true
+      become_method: sudo
+      shell: |
+        apt-get install -y \
+          apt-transport-https \
+          ca-certificates \
+          curl \
+          gnupg \
+          lsb-release
+        curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
+        echo \
+          "deb [arch=arm64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
+          $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+        apt-get update
+        apt-get install -y docker-ce docker-ce-cli containerd.io
+      tags:
+        - docker_install
+
+    - name: Start Docker
+      become: true
+      become_method: sudo
+      service:
+        name: docker
+        state: started
+        enabled: yes
+      tags:
+        - docker_start
+
+    - name: Download Gitlab Runner
+      become: true
+      become_method: sudo
+      get_url:
+        url: https://gitlab-runner-downloads.s3.amazonaws.com/latest/binaries/gitlab-runner-linux-arm64
+        dest: /usr/local/bin/gitlab-runner
+        mode: '0755'
+
+    - name: Create Gitlab Runner User
+      become: true
+      become_method: sudo
+      user:
+        name: gitlab-runner
+        shell: /bin/bash
+        state: present
+        createhome: yes
+
+    - name: Install Gitlab Runner
+      become: true
+      become_method: sudo
+      command: gitlab-runner install --user=gitlab-runner --working-directory=/home/gitlab-runner
+      args:
+        creates: /etc/gitlab-runner
+
+    - name: Start Gitlab Runner
+      become: true
+      become_method: sudo
+      service:
+        name: gitlab-runner
+        state: started
+        enabled: yes
+
+    - name: Register Gitlab Runner
+      become: true
+      become_method: sudo
+      command: gitlab-runner register --non-interactive --url https://gitlab-2.gaussb.io/ --registration-token GR1348941UxXw-BtKd_j7hCjrrb51 --executor docker --docker-image alpine:latest --description "Docker Runner" --tag-list "docker,aws" --run-untagged --locked="false"
+      register: register_runner

provider.tf

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+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 4.49.0"
+    }
+  }
+
+  required_version = "~> 1.3.0"
+}
+
+provider "aws" {
+  region = "ap-south-1"
+}