mailcow-dockerized-docs/docs/troubleshooting/debug-mysql_aria.en.md

MariaDB: Aria recovery after crash

If your server crashed and MariaDB logs an error similar to [ERROR] mysqld: Aria recovery failed. Please run aria_chk -r on all Aria tables (*.MAI) and delete all aria_log.######## files you may want to try the following to recover the database to a healthy state:

Start the stack and wait until mysql-mailcow begins to report a restart. Check this with the following command:

=== "docker compose (Plugin)"

``` bash
docker compose ps
```

=== "docker-compose (Standalone)"

``` bash
docker-compose ps
```

Now exec the following commands:

Stop the stack, don't run "down" === "docker compose (Plugin)"

``` bash
docker compose stop
```

=== "docker-compose (Standalone)"

``` bash
docker-compose stop
```

Run a bash in the stopped container as user mysql

=== "docker compose (Plugin)"

``` bash
docker compose run --rm --entrypoint '/bin/sh -c "gosu mysql bash"' mysql-mailcow
```

=== "docker-compose (Standalone)"

``` bash
docker-compose run --rm --entrypoint '/bin/sh -c "gosu mysql bash"' mysql-mailcow
```

cd to the SQL data directory

cd /var/lib/mysql

Run aria_chk

aria_chk --check --force */*.MAI

Delete aria log files

rm aria_log.*

Execute a complete stack restart using the following commands:

=== "docker compose (Plugin)"

``` bash
docker compose down
docker compose up -d
```

=== "docker-compose (Standalone)"

``` bash
docker-compose down
docker-compose up -d
```