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Checkmk
Checkmk is an IT infrastructure monitoring suite that auto-discovers services on hosts and ships as a self-contained OMD site image, officially distributed as a Docker container per edition.
This guide is synthesized from Checkmk's own official documentation, linked above — always cross-check exact package/version names there before running these commands on a production server, since distro and project versions move over time.
1Pull the Checkmk image
docker pull checkmk/check-mk-community:2.5.0-latestOther editions (Pro, Ultimate) use checkmk/check-mk-pro / check-mk-ultimate image names.
2Run the Checkmk container
docker container run -dit \ --name monitoring \ -e CMK_PASSWORD='mypassword' \ -e TZ='Europe/Berlin' \ -v monitoring:/omd/sites \ --tmpfs /opt/omd/sites/cmk/tmp:uid=1000,gid=1000 \ -p 8080:5000 \ -p 8000:8000 \ --restart always \ checkmk/check-mk-community:2.5.0-latest-p 8000:8000 exposes the Agent Receiver used for host registration; the web UI listens internally on port 5000.
3Log in
A monitoring site named 'cmk' is created automatically on first start.
Open http://localhost:8080/cmk/check_mk/ and sign in as cmkadmin with the CMK_PASSWORD you set.