Source Code

1. Navigate to your cloned Watchlog Agent repository:

   cd /path/to/watchlog-agent
   
2. Open the log-watchlist configuration file:

   vim log-watchlist.json
   
3. Define the logs you want to monitor. For example:

   {
     "logs": [
       {
         "name": "Nginx Access Logs",
         "path": "/var/log/nginx/access.log",
         "service": "nginx",
         "format": "auto"
       },
       {
         "name": "Redis Logs",
         "path": "/var/log/redis/redis.log",
         "service": "redis",
         "format": "custom",
         "pattern": "^(\\d{2} \\w{3} \\d{2}:\\d{2}:\\d{2}) (\\w+): (.*)$"
       }
     ]
   }
   
4. Explanation of fields:
   • name: A friendly name for this log stream.
   • path: Full filesystem path to the log file.
   • service: The service name used for categorization.
   • format:
     • auto: Watchlist auto-detects common log formats.
     • custom: Use the pattern field to define a regular expression.
   • pattern: A regex with three capture groups for:
     1. Date/Time
     2. Log Level (e.g., INFO, ERROR, DEBUG)
     3. Message content.
5. Save the file and reload the agent:

   sudo pm2 reload watchlog-agent