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60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# Repairing Nextcloud
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You can run the maintenance commands like this:
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```
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sudo -u nextcloud nextcloud-occ maintenance:mode --on
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sudo -u nextcloud nextcloud-occ maintenance:repair
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sudo -u nextcloud nextcloud-occ maintenance:mode --off
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```
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## Converting from SQLite to MySQL (mariadb)
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First: keep Nextcloud set to SQLite as its dbtype, and separately launch MySQL
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as a service by copying the configuration found
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[here](https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/modules/services/web-apps/nextcloud.nix).
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No password is necessary, since the user-based auth works with UNIX sockets.
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You can connect to the MySQL instance like this:
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```
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sudo -u nextcloud mysql -S /run/mysqld/mysqld.sock
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```
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Create a blank database for Nextcloud:
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```sql
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create database nextcloud;
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```
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Now setup the [conversion](https://docs.nextcloud.com/server/17/admin_manual/configuration_database/db_conversion.html):
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```
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sudo -u nextcloud nextcloud-occ db:convert-type mysql nextcloud localhost nextcloud
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```
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Ignore the password prompt. Proceed with the conversion.
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Now `config.php` will be updated but the override config from NixOS will not
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be. Now update your NixOS configuration:
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- Remove the `mysql` service you created.
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- Set `dbtype` to `mysql`.
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- Set `database.createLocally` to `true`.
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Rebuild your configuration.
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Now, make sure to enable [4-byte
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support](https://docs.nextcloud.com/server/latest/admin_manual/configuration_database/mysql_4byte_support.html)
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in the database.
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## Backing Up MySQL Database
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Use this mysqldump command:
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```
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sudo -u nextcloud mysqldump -S /run/mysqld/mysqld.sock --default-character-set=utf8mb4 nextcloud > backup.sql
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```
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