MariaDB failing to start

Question

root@moodle:~# sudo systemctl status mariadb × mariadb.service - MariaDB 10.11.11 database server Loaded: loaded (/lib/systemd/system/mariadb.service; enabled; preset: enabled) Active: failed (Result: exit-code) since Fri 2025-03-28 09:53:18 UTC; 2 days ago Docs: man:mariadbd(8) https://mariadb.com/kb/en/library/systemd/ Process: 556 ExecStartPre=/usr/bin/install -m 755 -o mysql -g root -d /var/run/mysqld (code=exited, status=0/SUCCESS) Process: 575 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS) Process: 582 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= || VAR=`/usr/bin/galera_recovery`; [ $? -eq 0 > Process: 652 ExecStart=/usr/sbin/mariadbd $MYSQLD_OPTS $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION (code=exited, status=1/FAILUR> Main PID: 652 (code=exited, status=1/FAILURE) Status: "MariaDB server is down" CPU: 215ms Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [ERROR] InnoDB: File ./ib_logfile0 was not found Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [Note] InnoDB: Starting shutdown... Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [Note] Plugin 'FEEDBACK' is disabled. Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [ERROR] Unknown/unsupported storage engine: InnoDB Mar 28 09:53:18 moodle mariadbd[652]: 2025-03-28 9:53:18 0 [ERROR] Aborting Mar 28 09:53:18 moodle systemd[1]: mariadb.service: Main process exited, code=exited, status=1/FAILURE Mar 28 09:53:18 moodle systemd[1]: mariadb.service: Failed with result 'exit-code'. Mar 28 09:53:18 moodle systemd[1]: Failed to start mariadb.service - MariaDB 10.11.11 database server. lines 1-23/23 (END)

alexdo · Answer

Hello, @admin1c235b282fa044969fa081215

MariaDB uses internal log files for InnoDB (like ib_logfile0 and ib_logfile1). If one is missing or corrupted, MariaDB cannot start because it relies on those to recover data and ensure consistency.

If you have backup of your data you can try restore from the backup file. If backup file is not present let me know and I can give you instructions on how to recover.

Regards

Bobby · Answer

Hey there 👋

Before anything else, make sure you have a backup of your Droplet:

https://docs.digitalocean.com/products/backups/how-to/create-and-restore/

That way, if anything goes wrong, you can try to recover from the backup.

Now, looking at the logs, MariaDB is complaining that ib_logfile0 is missing. That file is part of the InnoDB storage engine, and without it, MariaDB can’t start.

⚠️ If you’re certain the data isn’t needed (like on a new setup), you can remove the log files and let MariaDB regenerate them, first stop the MariaDB service and then:

sudo rm -f /var/lib/mysql/ib_logfile*
sudo systemctl start mariadb

If you’re still having issues or want to dig deeper, share the output of:

journalctl -xeu mariadb

- Bobby

a72184f9bcb54456b9a096944e78ef · Answer

Failed to start mariadb.service - MariaDB 10.11.11 database server.

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MariaDB failing to start

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