Shell script to setup multiple selfhosted github runner service in an AL2 server

selfhosted_githubrunner_service.sh

#!/bin/bash

# Variables
runner_version="2.314.1"  # GitHub runner version
count=2  # Number of GitHub runner services to create
base_dir="/apps" # Base directory for github runner services 
working_dir_base="/apps/actions-runners/action-runner-"  # GitHub runner working directories

# Get user and group input
read -p "Enter the action process username: " action_process_user
read -sp "Enter your GitHub PAT (masked): " PAT
echo
read -p "Enter the repository URL: " repo_url

# Extract GitHub username and repository name from the repository URL
github_user_name=$(echo "$repo_url" | cut -d'/' -f4)
your_repo_name=$(echo "$repo_url" | cut -d'/' -f5)

# Generate GitHub personal access token via API
generate_access_token() {
    echo "Generating GitHub actions-runners-registration token..."

    # Create a registration token for a repository
    access_token=$(curl -s -X POST \
        -H "Accept: application/vnd.github.v3+json" \
        -H "Authorization: Bearer $PAT" \
        -H "X-GitHub-Api-Version: 2022-11-28" \
        "https://api.github.com/repos/$github_user_name/$your_repo_name/actions/runners/registration-token" \
        | jq -r .token)

    if [ -z "$access_token" ]; then
        echo "Failed to generate actions-runners-registration token."
        exit 1
    fi

    echo "Actions-runners-registration token generated successfully."
}

# Generate GitHub personal access token
generate_access_token

# Get the hostname of the machine
get_hostname() {
    hostname=$(hostname)
    if [ -z "$hostname" ]; then
        echo "Failed to retrieve hostname."
        exit 1
    fi
    echo "$hostname"
}

# Get the hostname
hostname=$(get_hostname)

# Create working directories if not present and set ownership permissions
for ((i=1; i<=$count; i++)); do
    working_dir="${working_dir_base}${i}"
    if [ ! -d "$working_dir" ]; then
        sudo mkdir -p "$working_dir"
    fi
    sudo chown -R "$action_process_user":"$action_process_user" "$working_dir"
done

# Install and configure GitHub runner for each working directory
for ((i=1; i<=$count; i++)); do
    working_dir="${working_dir_base}${i}"
    cd "$working_dir" || exit
    if [ ! -d "actions-runner-$i" ]; then
        # Download GitHub runner
        curl -O -L "https://github.com/actions/runner/releases/download/v${runner_version}/actions-runner-linux-x64-${runner_version}.tar.gz"
        tar xzf "./actions-runner-linux-x64-${runner_version}.tar.gz"
        rm -f "./actions-runner-linux-x64-${runner_version}.tar.gz"

        # Configure GitHub runner with the generated access token and hostname label along with default labels
        ./config.sh --url "$repo_url" --token "$access_token" --name "actions-runner-$i" --unattended --replace --labels "$hostname"

        # Start the GitHub runner service
        sudo ./svc.sh install
        sudo ./svc.sh start
    fi
done