How do you troubleshoot Self-hosted runners when it fails?

When self-hosted runners fail during a CI/CD pipeline execution, it can disrupt your development workflow significantly. Here’s how you can troubleshoot these issues effectively:

Step 1: Check Runner Logs

Start by examining the runner logs for any error messages or warnings that might indicate what went wrong.

Step 2: Validate Runner Configuration

Ensure that your runner is correctly configured and connected to the right repository or organization.

Step 3: Resources Check

Make sure that you have enough system resources allocated (CPU, memory, disk space) for the runner to execute the jobs.

Step 4: Permissions and Secrets

Check if the necessary permissions for executing the jobs are granted and verify that any required secrets are set correctly.

Step 5: Network Connectivity

Ensure that your runner has proper network connectivity, especially if it needs to access external services or APIs.

Example

// Example of error handling in a CI/CD pipeline
try {
    // Your CI/CD tasks go here
} catch (Exception $e) {
    echo 'Error: ' . $e->getMessage();
    // Log the error for further investigation
}