Gol Observer

Gol Observer is a little tool I use to monitor my log files remotely using a stupidly reduced web user interface.
I basically works by tail -Fing the given log files and sending them to the client via websockets.

Why is it called Gol?
Because its partly written in Go and spells log backwards :D

Installation instructions

• Clone this repo

Frontend

Important note

Before deploying:

• Change the BASE_URLin the index.js to your backend url.
• Change the API_KEY in the index.js to your desired api key.

You can deploy the frontend to your to your favorite online hosted webspace or e.g. a apache2, nginx site (Hardly recommended to use HTTPS and a htaccess file because I was so lazy that I hardcoded the api key directly into index.js).

Just make sure to copy these files:

• fonts (directory)
• index.html
• index-dist.css
• index.js

Backend

• cd server
• go build (On my Raspberry Pi 4 I had to do env GOOS=linux GOARCH=arm64 go build gol-observer.go)
• sudo cp -p gol-observer /usr/local/bin/

Important note Before running the service you might want to change the WorkingDirectory in the service file where your config.json file is located.

• On Linux copy service file to /etc/systemd/system/
• Reload daemons sudo systemctl daemon-reload
• Start the service sudo systemctl start gol-observer

Configuration

The config.json is structured as follows:

{
  "server" : {
    "host": "127.0.0.1",
    "port": "8888",
    "external_api_url": "https://your_url_here.com",
    "api_key": "your-api-key-here"
  },
  "log_files_glob": [
      "/path/to/sample/*.log"
  ]
}