chore: update MariaDB image and configuration for performance tuning

compose.mariadb.yaml

@@ -7,12 +7,14 @@ services:
       - MYSQL_PASSWORD_FILE=/run/secrets/db_password
 
   db:
-    image: "mariadb:10.11"
+    image: "mariadb:11.4"
     environment:
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud
       - MYSQL_PASSWORD_FILE=/run/secrets/db_password
       - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_root_password
+      - MAX_DB_CONNECTIONS=${MAX_DB_CONNECTIONS:-100}
+      - INNODB_BUFFER_POOL_SIZE=${INNODB_BUFFER_POOL_SIZE:-1G}"
     configs:
       - source: my_tune
         target: /etc/mysql/conf.d/my-tune.cnf
@@ -25,21 +27,21 @@ services:
       - internal
     deploy:
       labels:
-          backupbot.backup: "true"
-          backupbot.backup.pre-hook: 'mysqldump --single-transaction -u root -p"$$(cat /run/secrets/db_root_password)" nextcloud > /var/lib/mysql/backup.sql'
-          backupbot.backup.post-hook: "rm -rf /var/lib/mysql/backup.sql"
-          backupbot.backup.path: "/var/lib/mysql/backup.sql"
+        backupbot.backup: "true"
+        backupbot.backup.pre-hook: 'mariadb-dump --single-transaction -u root -p"$$(cat /run/secrets/db_root_password)" nextcloud > /var/lib/mysql/backup.sql'
+        backupbot.backup.volumes.mariadb.path: "backup.sql"
+        backupbot.restore.post-hook: 'mariadb -u root -p"$$(cat /run/secrets/db_root_password)" nextcloud < /var/lib/mysql/backup.sql'
     healthcheck:
-      test: ["CMD-SHELL", 'mysqladmin -p"$$(cat /run/secrets/db_root_password)"  ping']
+      test: ["CMD-SHELL", 'mariadb-admin -p"$$(cat /run/secrets/db_root_password)"  ping']
       interval: 30s
       timeout: 10s
       retries: 10
       start_period: 1m
-
 configs:
   my_tune:
     name: ${STACK_NAME}_my_cnf
     file: my-tune.cnf
+    template_driver: golang
 
 secrets:
   db_root_password:

my-tune.cnf

@@ -4,7 +4,7 @@
 # https://mariadb.com/kb/en/library/performance-schema-overview/
 
 [server]
-innodb_buffer_pool_size        = 1G
+innodb_buffer_pool_size        = {{ env "INNODB_BUFFER_POOL_SIZE" }}
 innodb_flush_log_at_trx_commit = 2
 innodb_log_buffer_size         = 32M
 innodb_max_dirty_pages_pct     = 90
@@ -13,7 +13,7 @@ key_buffer_size                = 16M
 innodb_log_file_size           = 256M
 long_query_time                = 1
 max_allowed_packet             = 256M
-max_connections                = 100
+max_connections                = {{ env "MAX_DB_CONNECTIONS" }}
 max_heap_table_size            = 64M
 max_user_connections           = 0
 myisam_recover_options         = BACKUP