Watchlist: Custom Log Monitoring

1. Install Watchlog Agent

2. Configure Watchlist

In your project directory, create or open log-watchlist.json and define the logs to monitor:

  {
    "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+): (.*)$"
      }
    ]
  }
  

Then restart the agent to apply changes:

pm2 restart watchlog-agent

Restart-Service -Name "WatchlogAgent"

Understanding Format & Pattern

• auto: Watchlog auto-detects common formats (e.g., Nginx, Redis).
• custom: Provide a pattern regex to extract timestamp, level, and message.

Example regex extracts date, level, and message:

"^(\\d{2} \\w{3} \\d{2}:\\d{2}:\\d{2}) (\\w+): (.*)$"

There is no limit to the log levels you can use. For example: INFO, WARN, ERROR, DEBUG, NOTICE, CRITICAL, SUCCESS, or any other string recognized in the level group.

Key Watchlist Features