Verify your user crontab for any manual entries: crontab -e . Look for lines referencing /opt/observium and delete them.
Of course. He hadn't used apt . He’d compiled it from source, following a blog post titled "The Ultimate Network Monitoring Guide (2019)." The guide had made him feel like a wizard. Now, it made him feel like an archaeologist.
DROP DATABASE observium;
Be careful with this step if you have other websites or tools running on the same Ubuntu instance.
Observium requires several packages like PHP, MariaDB, and SNMP. If you no longer need these for other applications, you can remove them using the standard Ubuntu uninstall method: Run: sudo apt purge php* mariadb-server snmp snmpd Run: sudo apt autoremove to clean up unused dependencies. uninstall observium ubuntu
sudo systemctl stop apache2 # or nginx, if used for Observium sudo pkill -f observium # kill any running poller/discovery processes
Assuming default install at /opt/observium or /var/www/observium: Verify your user crontab for any manual entries: crontab -e
Warning: these steps are destructive. Back up configs, database dumps, and any custom scripts before removing anything.