mailcow-dockerized-docs/docs/mysql.md
2017-05-06 00:22:26 +02:00

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### Connect
```
source mailcow.conf
docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME}
```
### Backup
```
cd /path/to/mailcow-dockerized
source mailcow.conf
DATE=$(date +"%Y%m%d_%H%M%S")
docker-compose exec mysql-mailcow mysqldump --default-character-set=utf8mb4 -u${DBUSER} -p${DBPASS} ${DBNAME} > backup_${DBNAME}_${DATE}.sql
```
### Restore
You should redirect the sql dump without Docker-Compose to prevent parsing errors.
```
cd /path/to/mailcow-dockerized
source mailcow.conf
docker exec -i $(docker-compose ps -q mysql-mailcow) mysql -u${DBUSER} -p${DBPASS} ${DBNAME} < backup_file.sql
```
### Reset MySQL passwords
Stop the stack by running `docker-compose stop`.
When the containers came to a stop, run this command:
```
docker-compose run --rm --entrypoint '/bin/sh -c "gosu mysql mysqld --skip-grant-tables & sleep 10 && mysql -hlocalhost -uroot && exit 0"' mysql-mailcow
```
**1\. Find database name**
```
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mailcow_database | <=====
| mysql |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)
```
**2\. Reset one or more users**
Both "password" and "authentication_string" exist. Currently "password" is used, but better set both.
```
MariaDB [(none)]> SELECT user FROM mysql.user;
+--------------+
| user |
+--------------+
| mailcow_user | <=====
| root |
+--------------+
2 rows in set (0.00 sec)
MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> UPDATE mysql.user SET authentication_string = PASSWORD('gotr00t'), password = PASSWORD('gotr00t') WHERE User = 'root' AND Host = '%';
MariaDB [(none)]> UPDATE mysql.user SET authentication_string = PASSWORD('mookuh'), password = PASSWORD('mookuh') WHERE User = 'mailcow' AND Host = '%';
MariaDB [(none)]> FLUSH PRIVILEGES;
```