#!/usr/bin/env bash

# Description:

# This will register a gitlab runner with a shell executor,

# fetchting the registration token from SSM, and resulting in a name like:

# aws-myproject-shell-09af

# Pre-Reqs:

# Ensure the aws profile has access to ssm:GetParameters and kms:Decrypt

# Run this as root

GITLAB_URL="https://gitlab.mydomain.com/gitlab/"

GITLAB_GROUP_NAME="myproject"

GITLAB_RUNNER_EXECUTOR="shell"

GITLAB_RUNNER_SUFFIX="$(openssl rand -hex 2)"

GITLAB_RUNNER_REGISTRATION_TOKEN="$(aws ssm get-parameter --name \"/gitlab-runners/${GITLAB_GROUP_NAME}/RUNNER_REGISTRATION_TOKEN\" --with-decryption | jq -r '.Parameter.Value')"

gitlab-runner register \

--non-interactive \

--name "aws-${GITLAB_GROUP_NAME}-${GITLAB_RUNNER_EXECUTOR}-${GITLAB_RUNNER_SUFFIX}" \

--url "${GITLAB_URL}" \

--registration-token "${GITLAB_RUNNER_REGISTRATION_TOKEN}" \

--executor "${GITLAB_RUNNER_EXECUTOR}" \

--tag-list "${GITLAB_RUNNER_EXECUTOR}"