Before uninstalling Observium, you need to stop its services. Run the following commands:
: If you want to remove the web server and PHP (be careful if other apps use them), you can use APT purge : sudo apt-get purge apache2 mariadb-server php* sudo apt autoremove uninstall observium ubuntu
Observium relies on the poller, discovery, and alerts cron jobs or services. Stop them first. Before uninstalling Observium, you need to stop its services