switch nextcloud from sqlite to mysql

docs/repair-nextcloud.md

@@ -0,0 +1,46 @@
+# Repairing Nextcloud
+
+You can run the maintenance commands like this:
+
+```
+sudo -u nextcloud nextcloud-occ maintenance:mode --on
+sudo -u nextcloud nextcloud-occ maintenance:repair
+sudo -u nextcloud nextcloud-occ maintenance:mode --off
+```
+
+Converting from SQLite to MySQL (mariadb)
+
+First: keep Nextcloud set to SQLite as its dbtype, and separately launch MySQL
+as a service by copying the configuration found
+[here](https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/modules/services/web-apps/nextcloud.nix).
+
+No password is necessary, since the user-based auth works with UNIX sockets.
+
+You can connect to the MySQL instance like this:
+
+```
+sudo -u nextcloud mysql -S /run/mysqld/mysqld.sock
+```
+
+Create a blank database for Nextcloud:
+
+```sql
+create database nextcloud;
+```
+
+Now setup the [conversion](https://docs.nextcloud.com/server/17/admin_manual/configuration_database/db_conversion.html):
+
+```
+sudo -u nextcloud nextcloud-occ db:convert-type mysql nextcloud localhost nextcloud
+```
+
+Ignore the password prompt. Proceed with the conversion.
+
+Now `config.php` will be updated but the override config from NixOS will not
+be. Now update your NixOS configuration:
+
+- Remove the `mysql` service you created.
+- Set `dbtype` to `mysql`.
+- Set `database.createLocally` to `true`.
+
+Rebuild your configuration.

modules/nixos/services/nextcloud.nix

@@ -4,15 +4,19 @@
 
     services.nextcloud = {
       package = pkgs.nextcloud27; # Required to specify
+      configureRedis = true;
       datadir = "/data/nextcloud";
+      database.createLocally = true;
       https = true;
       hostName = "localhost";
       maxUploadSize = "50G";
       config = {
         adminpassFile = config.secrets.nextcloud.dest;
+        dbtype = "mysql";
         extraTrustedDomains = [ config.hostnames.content ];
         trustedProxies = [ "127.0.0.1" ];
       };
+      extraOptions = { default_phone_region = "US"; };
     };
 
     # Don't let Nginx use main ports (using Caddy instead)
@@ -147,35 +151,10 @@
     # Grant user access to Nextcloud directories
     users.users.${config.user}.extraGroups = [ "nextcloud" ];
 
-    ## Backup config
-
     # Open to groups, allowing for backups
     systemd.services.phpfpm-nextcloud.serviceConfig.StateDirectoryMode =
       lib.mkForce "0770";
 
-    # Allow litestream and nextcloud to share a sqlite database
-    users.users.litestream.extraGroups = [ "nextcloud" ];
-    users.users.nextcloud.extraGroups = [ "litestream" ];
-
-    # Backup sqlite database with litestream
-    services.litestream = {
-      settings = {
-        dbs = [{
-          path = "${config.services.nextcloud.datadir}/data/nextcloud.db";
-          replicas = [{
-            url =
-              "s3://${config.backup.s3.bucket}.${config.backup.s3.endpoint}/nextcloud";
-          }];
-        }];
-      };
-    };
-
-    # Don't start litestream unless nextcloud is up
-    systemd.services.litestream = {
-      after = [ "phpfpm-nextcloud.service" ];
-      requires = [ "phpfpm-nextcloud.service" ];
-    };
-
     # Log metrics to prometheus
     networking.hosts."127.0.0.1" = [ config.hostnames.content ];
     services.prometheus.exporters.nextcloud = {