Liveness Probe

Description

The Liveness module monitors the availability of different environments and provides notifications and logs about outages and recovery events.

Requirements

• Drupal 10 or 11
• Drush

Installation

1. Place the module in the modules/contrib directory.
2. Enable the module: drush en liveness
3. Configure the module settings at /admin/config/development/performance/liveness.

Configuration

• Set the URLs for the environments and enable/disable probing.
• Enter email addresses for notifications.

A php command which wraps the drush command and provides event notification logging even if drupal db is down

Usage

• php /path/to/drupal/html/modules/contrib/liveness/liveness.php /path/to/drupal http://url environment-name
• php /path/to/drupal/html/modules/contrib/liveness/liveness.php /var/www/html/ http://example.com example

Crontab Setup

Add a crontab entry to invoke Drupal cron and Drush liveness check periodically.

• crontab -e
• add lines to crontab:
• #MIN HOUR DOM MONTH DOW CMD
• 1 * * * * php /path/to/drupal/html/modules/contrib/liveness/liveness.php http://example.com environment-name;
• 2 * * * * php /path/to/drupal/html/modules/contrib/liveness/liveness.php http://example2.com environment-name2;
• 3 * * * * php /path/to/drupal/html/modules/contrib/liveness/liveness.php http://example3.com environment-name3;

Drush Commands - see the above php command instead of using this.

• drush liveness:check http://example.com example-environment - Check the liveness of configured environments and merge logs.