This guide explains how to fully uninstall Observium from an Ubuntu system (files, packages, services, databases, users, cron jobs, webserver config, backups, and optional cleanup). It assumes Observium was installed manually (not from a distro package) using the official community or professional code base, and that you have root or sudo access. Commands use bash/sudo; adjust for your environment and paths if you customized them.
Warning: these steps are destructive. Back up configs, database dumps, and any custom scripts before removing anything.
sudo systemctl restart apache2If you want to remove packages that were installed specifically for Observium:
sudo apt-get remove --purge apache2 mysql-server php7.4 php7.4-cli php7.4-mysql php7.4-gd php7.4-snmp php7.4-curl snmp fping graphviz rrdtool
Warning: This will remove Apache and MySQL entirely. Only run this if you don't need these services for other applications.
If you want, tell me your Observium install paths, DB names, and which web server and PHP version you used and I’ll generate exact commands tailored to your system.
Observium often runs under www-data, but some setups create a dedicated observium user. If present:
sudo userdel observium
sudo groupdel observium
Observium should now be completely removed from your Ubuntu system. If you plan to reinstall Observium later, you can skip Step 8 (removing dependencies) to save time.
How to Completely Uninstall Observium from Ubuntu If you need to remove Observium from your Ubuntu system—whether to migrate to a different monitoring tool or to perform a clean reinstall—it is important to follow a structured process. Because Observium relies on a stack of components (Apache, MySQL/MariaDB, and Cron jobs), a simple directory deletion isn't enough.
Follow these steps to safely and thoroughly decommission Observium. 1. Stop Associated Services
Before deleting files, stop the services that interact with the Observium database and web files. This prevents errors or file-lock issues during the removal process. sudo systemctl stop apache2 sudo systemctl stop snmpd Use code with caution. Copied to clipboard 2. Remove the Observium Directory
By default, Observium is installed in /opt/observium. Deleting this folder removes the application code, local configurations, and the RRD (Round Robin Database) files that store your performance graphs. sudo rm -rf /opt/observium Use code with caution. Copied to clipboard 3. Drop the MySQL/MariaDB Database
Observium stores all its device information, ports, and alerting rules in a SQL database. To remove this data: Log into your database server: sudo mysql -u root -p Use code with caution. Copied to clipboard Drop the specific database (usually named observium): DROP DATABASE observium; EXIT; Use code with caution. Copied to clipboard 4. Remove Cron Jobs
Observium uses cron jobs to handle polling and discovery. If you don't remove these, your system will continue trying to run scripts that no longer exist, cluttering your system logs with errors. Check for the Observium cron file and delete it: sudo rm /etc/cron.d/observium Use code with caution. Copied to clipboard 5. Clean Up Apache Configuration
If you created a specific VirtualHost for Observium, you should disable it and remove the configuration file to keep your web server clean.
sudo a2dissite observium.conf sudo rm /etc/apache2/sites-available/observium.conf sudo systemctl reload apache2 Use code with caution. Copied to clipboard 6. Remove Dependencies (Optional)
If Observium was the only application on this server, you may want to remove the packages it installed (like PHP modules or FPN). However, be cautious: only do this if no other services on your Ubuntu machine require them.
sudo apt-get purge php-* fping snmp mtr-tiny sudo apt-get autoremove Use code with caution. Copied to clipboard Final Summary Table Location/Command Files Delete Directory /opt/observium Database Drop Database DROP DATABASE observium; Automation Remove Cron /etc/cron.d/observium Web Server Remove Site Config /etc/apache2/sites-available/
The Uninstall
It started, as these things often do, with a single red alert at 3:14 AM.
Leo, the sole systems administrator for a modest but growing cloud startup, fumbled for his phone. The glow of the screen illuminated his tired face. Observium, the network monitoring tool he’d lovingly installed on an Ubuntu server three years ago, was screaming that a core switch was down.
He stumbled to his home office, logged in, and realized the truth: the switch was fine. Observium was lying.
That was the first crack. Over the next week, more cracks appeared. The graphs for memory usage flatlined. The auto-discovery feature, once a marvel, now identified servers as "unknown device (generic)." The web interface took forty-five seconds to load. Upgrading it—a task involving a labyrinth of ./discovery.php and ./poller.php commands—failed with a PHP dependency error so cryptic it felt like a personal insult.
The final straw came when Leo’s boss, Jenna, asked for a simple bandwidth report for a client. Leo spent two hours trying to extract a clean CSV from Observium’s MySQL database, only to get data that showed negative packets transmitted.
"We need a new solution," Jenna said, not unkindly. "Can you remove the old one?"
"Remove," Leo repeated. The word felt heavier than "uninstall." It meant admitting failure. It meant confronting the ghost of his past self—the eager junior admin who had followed a quickstart guide with religious fervor, pasting commands without truly understanding them. uninstall observium ubuntu
"By Friday," Jenna added, and walked away.
Friday arrived like a storm front. Leo sat before the terminal, the cursor blinking on a cold, gray afternoon. The server, affectionately named monitor.internal, hummed quietly in the rack.
He took a deep breath. Then, he began.
His first instinct was the nuclear option. sudo apt remove observium. He typed it, heart pounding. The terminal whirred, thought for a moment, and replied:
Package 'observium' is not installed, so not removed.
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.
He opened his old notes. The installation path was /opt/observium. The web root had a symlink: /var/www/html/observium. The database was called observium_db. The cron job ran poller.php every five minutes. It was a mess of his own making.
Step one was to stop the bleeding. He disabled the cron job:
sudo crontab -u www-data -l > old_cron.txt
sudo crontab -u www-data -r
The poller fell silent. A small victory.
Step two was to unplug the web interface. He removed the symlink:
sudo rm /var/www/html/observium
He reloaded Apache. The old dashboard, with its dead graphs and red alerts, was gone. A generic "404 Not Found" page stared back at him. It was peaceful.
Step three was the database. He logged into MySQL with trembling fingers.
DROP DATABASE observium_db;
DROP USER 'observium'@'localhost';
FLUSH PRIVILEGES;
The database vanished in a whisper. Thousands of data points, three years of history—gone. He felt a strange pang, like deleting a save file for a game he no longer played.
Step four was the purge. The actual files.
sudo rm -rf /opt/observium
He watched the directories scroll by: rrd/, logs/, includes/, html/. All those custom alerts he’d written. All those graphs he’d tweaked. All gone.
He checked for leftovers. Configuration files? sudo find / -name "*observium*" -type f 2>/dev/null. A few old logrotate snippets in /etc/logrotate.d/. He deleted those too. He checked PHP modules he’d installed specifically for Observium—php7.4-mysqlnd, php7.4-snmp. He left them for now. No need to break other things.
Finally, he ran sudo apt autoremove to clean up orphaned packages. A library called libsnmp-dev was removed. He didn't even know what that was for.
He rebooted the Ubuntu server.
When it came back up, the terminal was clean. htop showed CPU usage at 2%. Memory was mostly free. The server was quiet. It was just an Ubuntu box again, waiting for its next purpose.
Leo leaned back in his chair. He felt lighter. The frantic red alerts, the sluggish interface, the nagging dread of an unsupported, decaying system—all of it was gone. He had not just uninstalled a program. He had exorcised a ghost.
He opened a fresh terminal window and typed:
sudo apt update
sudo apt install prometheus node-exporter grafana
The new future began to install.
And for the first time in months, Leo smiled.
Since Observium is typically installed manually by downloading a source archive rather than through a package manager like Overview This guide explains how to fully uninstall
, there is no single "uninstall" command. You must manually remove its directory, database, and system configurations. 1. Stop Active Services & Cron Jobs
First, prevent Observium from running any more discovery or polling tasks. Remove Cron Jobs: Delete the Observium cron file usually located at /etc/cron.d/observium Stop the Web Server:
If you only used Apache for Observium, you can stop the service: sudo systemctl stop apache2 linuxhostsupport.com 2. Delete the Observium Directory Observium is most commonly installed in the directory. TurnKey Linux sudo rm -rf /opt/observium
to delete the core application, including your RRD files and configuration. Note: If you installed it elsewhere (like /var/www/html/observium ), remove that directory instead. TurnKey Linux 3. Drop the MySQL/MariaDB Database
You need to remove the database and the dedicated user created during setup. Stack Overflow Log in to your database: sudo mysql -u root -p Drop the database: DROP DATABASE observium; Remove the user: DROP USER 'observium'@'localhost'; Exit the prompt: Stack Overflow 4. Cleanup Web Server Configurations
Remove the virtual host file created for the Observium web interface. sudo rm /etc/apache2/sites-available/observium.conf sudo rm /etc/nginx/sites-available/observium.conf Restart your web server to apply changes: sudo systemctl restart apache2 linuxhostsupport.com 5. (Optional) Remove Dependencies
If you no longer need the supporting software, you can remove the packages installed specifically for Observium: linuxhostsupport.com
sudo apt purge rrdtool fping snmp whois mtr-tiny ipmitool graphviz imagemagick sudo apt autoremove to clean up any remaining unused dependencies. Ubuntu/Debian Install - Observium
To uninstall Observium from Ubuntu, you must manually remove its files, database, and system configurations because it typically installs into a specific directory rather than as a standard system package. 1. Delete Installation Files
Remove the main Observium directory and the cron jobs that handle polling: sudo rm -rf /opt/observium sudo rm /etc/cron.d/observium 2. Drop the Database
Delete the MySQL/MariaDB database and the associated user created during installation: Log in to MySQL: mysql -u root -p Run these commands: DROP DATABASE observium; DROP USER 'observium'@'localhost'; FLUSH PRIVILEGES; EXIT; 3. Remove Apache Configuration Disable the site and remove the virtual host file: sudo a2dissite observium.conf sudo rm /etc/apache2/sites-available/observium.conf sudo systemctl restart apache2 4. Cleanup Logs and RRD Files If you want to completely wipe all historical data: sudo rm -rf /var/log/observium
Ensure all RRD files inside /opt/observium/rrd are gone (this is covered by step 1).
💡 Tip: If you only want to stop the service without deleting data, just disable the Apache site and remove the cron file. If you'd like to:
Keep your historical data before deleting everything (back up RRD files)? Reinstall a fresh version? Switch to a different monitoring tool like LibreNMS? Install Observium on Debian/Ubuntu
To uninstall Observium from Ubuntu, you must manually remove its installation directory, cron jobs, and database, as it is typically installed from source rather than a standard package manager. 1. Remove Cron Jobs and Scripts
Observium relies on cron for polling and discovery. You need to delete the specific cron file created during installation. Run: sudo rm /etc/cron.d/observium 2. Delete the Installation Directory
The default installation directory is usually /opt/observium. Deleting this folder removes the application files and the web interface. Run: sudo rm -rf /opt/observium 3. Drop the Database
Observium stores its data in a MariaDB or MySQL database. You should remove the dedicated database and user. Log into your database: sudo mysql -u root -p Drop the database: DROP DATABASE observium; Remove the user: DROP USER 'observium'@'localhost'; Exit: EXIT; 4. Clean Up Web Server Configuration
If you configured a virtual host for Observium in Apache or Nginx, you should remove those configuration files to fully clean the system.
For Apache: sudo rm /etc/apache2/sites-available/observium.conf and then sudo systemctl reload apache2.
For Nginx: sudo rm /etc/nginx/sites-available/observium.conf and then sudo systemctl reload nginx. 5. Optional: Remove Dependencies
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.
Do you also need help backing up your Observium data before proceeding with the uninstallation? Software Requirements - Observium
How to Completely Uninstall Observium from Ubuntu Whether you are migrating to a different monitoring solution or simply cleaning up your server, uninstalling Observium requires more than just removing a few files. Because Observium relies on a stack of dependencies—including a web server, a database, and several PHP modules—a proper cleanup ensures no orphan processes or security holes are left behind. Clear your browser cache Restart web server: sudo
This guide will walk you through the process of stopping the services, removing the application files, and dropping the associated databases. Step 1: Stop the Observium Cron Jobs
Observium relies heavily on cron jobs for polling and discovery. If you don't disable these first, the system will continue trying to run scripts that you are about to delete, leading to a flood of local error logs. Open the cron configuration: sudo nano /etc/cron.d/observium Use code with caution.
If the file exists, delete its contents or simply remove the file entirely: sudo rm /etc/cron.d/observium Use code with caution. Step 2: Remove the Web Server Configuration
You likely have an Apache or Nginx virtual host pointing to your Observium directory. You should disable and remove this to prevent the web server from throwing errors. For Apache: Disable the site: sudo a2dissite observium.conf Use code with caution. Restart Apache: sudo systemctl restart apache2 Use code with caution. Delete the configuration file: sudo rm /etc/apache2/sites-available/observium.conf Use code with caution. For Nginx: Remove the symbolic link: sudo rm /etc/nginx/sites-enabled/observium Use code with caution. Restart Nginx: sudo systemctl restart nginx Use code with caution. Remove the site config: sudo rm /etc/nginx/sites-available/observium Use code with caution. Step 3: Drop the MySQL/MariaDB Database
Observium stores all your historical data and device information in a database. To remove it: Log into your database server: sudo mysql -u root -p Use code with caution. Identify the database name (usually observium) and drop it: DROP DATABASE observium; Use code with caution.
(Optional) Remove the specific database user created for Observium: DROP USER 'observium'@'localhost'; FLUSH PRIVILEGES; EXIT; Use code with caution. Step 4: Delete the Observium Files
Now that the services are disconnected, you can remove the actual application directory. By default, Observium is installed in /opt/observium. sudo rm -rf /opt/observium Use code with caution.
Warning: This command is permanent. Ensure you have backed up any custom templates or configurations if you plan to use them elsewhere. Step 5: Clean Up Dependencies (Optional)
If Observium was the only application on this server using certain packages (like SNMP tools or specific PHP modules), you might want to remove them to save space.
Note: Be careful with this step if you have other websites or tools running on the same Ubuntu instance.
sudo apt-get purge snmp snmpd fping ImageMagick sudo apt-get autoremove Use code with caution. Step 6: Verify Removal
Finally, check that no Observium-related processes are still running: ps aux | grep observium Use code with caution.
If the output is empty (aside from your grep command), the uninstallation is successful. Summary Checklist Cron jobs deleted Apache/Nginx virtual host removed MySQL database and user dropped /opt/observium directory deleted Unused packages purged
Are you planning to replace Observium with another monitoring tool like LibreNMS or Zabbix, or are you decommissioning the server entirely?
To uninstall Observium from Ubuntu, you must manually remove its installation directory, database, and scheduled tasks, as it is typically installed from source rather than via a standard package manager.
The following steps provide a comprehensive guide to completely removing Observium and its associated components from your system. 1. Stop Observium Services
Before deleting files, stop any active processes to ensure a clean removal.
Stop the Web Server: Depending on your setup, stop either Apache or Nginx. For Apache: sudo systemctl stop apache2. For Nginx: sudo systemctl stop nginx.
Stop the Database: Stop MariaDB or MySQL to prevent further data writing. sudo systemctl stop mariadb or sudo systemctl stop mysql. 2. Remove Scheduled Tasks (Cron Jobs)
Observium uses cron jobs for automated polling and discovery. You must delete these to prevent system errors. Locate and delete the Observium cron file: sudo rm /etc/cron.d/observium. 3. Delete the Installation Directory
By default, Observium is installed in the /opt/observium directory. Deleting this folder removes the application code, MIBs, and RRD (historical graph) data. Run the command: sudo rm -rf /opt/observium. 4. Drop the Database and User
Observium stores its configuration and device information in a MySQL/MariaDB database. Log into the database: sudo mysql -u root -p. Delete the database: DROP DATABASE observium;.
Delete the database user: DROP USER 'observium_rw'@'localhost'; (The username may vary; check your original config.php if unsure). Apply changes: FLUSH PRIVILEGES; followed by EXIT;. Ubuntu/Debian Install - Observium