5,2 KiB
!!! warning
Please be adviced that this guide is a first draft. mailcow: dockerized changed quite a lot on its DB configuration. It now uses the InnoDB file format Barracuda and the utf8mb4 character set. There is also some change to the DB / TABLE structure.
!!! info Also note that this guide doesn't touch on the users settings like Spamlevels, TLS Settings, etc. nor the export / import of your roundcube or SOGo settings.
Lastly please check the section on how to [import / restore](u_e-backup_restore-maildir/#restore) your maildir backup to get an idea how to migrate your mails.
Create mailcow db backups
First you need to modify the table mailcow. Mailcow-dockerized adds three and moves two existing columns in the table mailbox. The columns tls_enforce_in and tls_enforce_out get moved two rows up (behind domain). The columns key, multiple_bookings and wants_tagged_subject need to be added after tls_enforce_out.
It should look like this:
MariaDB [mailcow]> desc mailbox;
+----------------------+--------------+------+-----+-------------------+-----------------------------+
| Field | Type | Null | Key | Default | Extra |
+----------------------+--------------+------+-----+-------------------+-----------------------------+
| username | varchar(255) | NO | PRI | NULL | |
| password | varchar(255) | NO | | NULL | |
| name | varchar(255) | YES | | NULL | |
| maildir | varchar(255) | NO | | NULL | |
| quota | bigint(20) | NO | | 0 | |
| local_part | varchar(255) | NO | | NULL | |
| domain | varchar(255) | NO | MUL | NULL | |
| tls_enforce_in | tinyint(1) | NO | | 0 | |
| tls_enforce_out | tinyint(1) | NO | | 0 | |
| kind | varchar(100) | NO | | | |
| multiple_bookings | tinyint(1) | NO | | 0 | |
| wants_tagged_subject | tinyint(1) | NO | | 0 | |
| created | datetime | NO | | CURRENT_TIMESTAMP | |
| modified | datetime | YES | | NULL | on update CURRENT_TIMESTAMP |
| active | tinyint(1) | NO | | 1 | |
+----------------------+--------------+------+-----+-------------------+-----------------------------+
You can do this with a UI like Adminer or use the MySQL CLI like :
MariaDB [mailcow]> ALTER TABLE mailbox MODIFY COLUMN tls_enforce_in TINYINT(1) NOT NULL DEFAULT '0' AFTER domain,
MODIFY COLUMN tls_enforce_out TINYINT(1) NOT NULL DEFAULT '0' AFTER tls_enforce_in;
MariaDB [mailcow]> ALTER TABLE mailbox ADD COLUMN `kind` VARCHAR(255) NOT NULL AFTER `tls_enforce_out`,
ADD COLUMN `multiple_bookings` TINYINT(1) NOT NULL DEFAULT '0' AFTER `kind`,
ADD COLUMN `wants_tagged_subject` TINYINT(1) NOT NULL DEFAULT '0' AFTER `multiple_bookings`;
MariaDB [mailcow]> DESC mailbox;
When this is done we can backup the tables:
# Load your mysql variables into environment
DBHOST=$(grep database_host /var/www/mail/inc/vars.inc.php | cut -d'"' -f2)
DBNAME=$(grep database_name /var/www/mail/inc/vars.inc.php | cut -d'"' -f2)
DBUSER=$(grep database_user /var/www/mail/inc/vars.inc.php | cut -d'"' -f2)
DBPASS=$(grep database_pass /var/www/mail/inc/vars.inc.php | cut -d'"' -f2)
# Backup your tables
mysqldump --replace --no-create-info --default-character-set=utf8mb4 \
--host ${DBHOST} -u${DBUSER} -p${DBPASS} ${DBNAME} \
alias alias_domain domain domain_admins mailbox quota2 sender_acl > backup_mailcow.sql
!!! Info
- --replace: Write REPLACE statements rather than INSERT statements
- --no-create-info: Don't write CREATE TABLE statements.
- --default-character-set make sure our exported default charset is utf8mb4.
Prepare mailcow: dockerized
To initiate your fresh installed database, visit https://${MAILCOW_HOSTNAME} with a browser of your choice. Check if the DB is initiated correctly afterwards:
# source mailcow.conf
# docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME}
MariaDB [mailcow]> show tables;
+-------------------------------+
| Tables_in_mailcow |
+-------------------------------+
| admin |
| alias |
[...]
Import your backups:
# source mailcow.conf
# docker exec -i $(docker-compose ps -q mysql-mailcow) mysql -u${DBUSER} -p${DBPASS} ${DBNAME} < backup_mailcow.sql
Recalculate used quota with doveadm:
# docker-compose exec dovecot-mailcow doveadm quota recalc -A
Restart services:
# docker-compose restart