Komari is a minimalist monitoring tool for Unix systems that provides essential system metrics with a simple interface. Also, it's written in Go – love it. [Docs](https://komari-document.pages.dev) [Demo](https://ss.akz.moe/) Let's be honest: there are many open source monitoring tools available, e.g [Uptime Kuma](https://github.com/louislam/uptime-kuma) was running on my server before, but I didn't really like it after all. This one the other hand had a really clean interface, and yes, I had to translate it from Chinese to English, but you can't blame me – they have this cute theme going on, I mean, what did you expect? ## Introduction Komari follows the following structure: - **Komari Monitor**: A Full Stack app that displays the metrics coming from `Komari Agent`(s). One for all your monitored nodes. - **Komari Agent**: A lightweight agent that collects system metrics and sends them to the `Komari Monitor`. One per node. ## Installation ### Komari Monitor I really suggest installing `Komari Monitor` using Docker, as it's the easiest way to get it up and running. You can use the following command to run it: 1. Clone the repository 2. Run the following commands in your terminal: ```bash # Create a data directory to persist data mkdir -p ./data # Run Komari Monitor using Docker docker run -d \ -p 25774:25774 \ -v $(pwd)/data:/app/data \ --name komari \ --restart unless-stopped \ ghcr.io/komari-monitor/komari:latest ``` You can specify `ADMIN_USERNAME` and `ADMIN_PASSWORD` environment variables to set your admin credentials. By default, `ADMIN_USERNAME` is `admin` and `ADMIN_PASSWORD` is generated on the first run and outputted in the logs. To view the logs, use the command: `docker logs komari` To add the environment variables, add `-e ADMIN_USERNAME=your_username -e ADMIN_PASSWORD=your_password` to the `docker run` command. 3. Run `docker logs komari` to get the admin password. ```bash devnyxie@torpedo-server:~/apps/komari$ docker logs c456888824e2 2025/10/26 20:33:26 Komari Monitor 1.1.2a (hash: d9c26e43a98c0a796e3dc7ca9c85121b4cfc5c14) 2025/10/26 20:33:26 Using SQLite database file: /app/data/komari.db 2025/10/26 20:33:26 Application timezone is set to 'UTC'. 2025/10/26 20:33:26 Default admin account created. Username: admin , Password: xLZmlooUVc5Q ``` 4. Access the Komari Monitor web interface at `http://localhost:25774` and log in with the admin credentials. 5. Add a new agent with a name of choice. 6. Get the Install Command for the agent. Make sure to replace the URL if necessary. It must be the URL that your agent can reach the monitor at. So if my agent is on my local network, and my monitor is hosted on remote - I need to use the public URL of my monitor. This is the structure of the command: ```bash bash <(curl -sL https://raw.githubusercontent.com/komari-monitor/komari-agent/refs/heads/main/install.sh) -e MONITOR_URL -t AGENT_ID ``` ### Komari Agent To install the Komari Agent on your Unix system, run the install command you obtained from the Komari Monitor setup. This command will download and install the agent, configure it to communicate with your Komari Monitor, and start collecting system metrics. The provided syntax didn't work on my ubuntu systems, I was getting the following error: ```bash bash: /dev/fd/63: No such file or directory ``` To fix this, I had to modify the command: ```bash curl -sL https://raw.githubusercontent.com/komari-monitor/komari-agent/refs/heads/main/install.sh | sudo bash -s -- -e MONITOR_URL -t AGENT_ID ``` If you made a mistake, feel free to uninstall the agent and try again! ```bash # Purge Komari Agent sudo systemctl stop komari-agent sudo systemctl disable komari-agent sudo rm /etc/systemd/system/komari-agent.service sudo rm -rf /opt/komari sudo systemctl daemon-reload ``` After installation, the agent will start and auto-register systemd service to ensure it runs on system startup. Surprisignly, the agent is very lightweight and consumes minimal resources. ## Testing Once the agent is installed and running, you can verify its status by checking the logs: ```bash sudo journalctl -u komari-agent -f ``` If everything is set up correctly, you should see logs indicating that the agent is able to connect to the Komari Monitor and is sending system metrics. ```bash username@server:~/apps/komari$ sudo journalctl -u komari-agent -f [sudo] password for username: Oct 26 22:03:40 torpedo-server agent[197428]: 2025/10/26 22:03:40 Get IPV4 Success: IPv4Address Oct 26 22:03:41 torpedo-server agent[197428]: 2025/10/26 22:03:41 Get IPV6 Success: IPv6Address ``` Now, you can refresh the Komari Monitor web interface, and you should see the newly added agent along with real-time system metrics.

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Komari: Node System Monitoring in Go