CI: More testing with custom mysql.cnf file

.github/actions/setup-database/action.yml

@@ -46,8 +46,23 @@ runs:
     - name: Set up MySQL Configuration and Privileges
       if: ${{ inputs.database == 'mysql' }}
       run: |
-        # Set MySQL global variables for character set, collation, and row format
+        # Create MySQL config file inside the container and restart MySQL to apply settings
-        # These must be set before migrations run to ensure tables are created with correct settings
+        # This ensures settings are applied at server startup, similar to command-line arguments
+        CONTAINER_ID=$(docker ps --filter "ancestor=mysql:8.0" --format "{{.ID}}" | head -1)
+        if [ -n "$CONTAINER_ID" ]; then
+          # Create config file in container
+          docker exec $CONTAINER_ID sh -c 'printf "[mysqld]\ncharacter-set-server=utf8mb4\ncollation-server=utf8mb4_unicode_ci\ninnodb-default-row-format=DYNAMIC\n" > /etc/mysql/conf.d/custom.cnf'
+          # Restart MySQL to apply config (graceful shutdown and start)
+          docker exec $CONTAINER_ID sh -c 'mysqladmin -u root -proot_password shutdown' || true
+          sleep 2
+          docker start $CONTAINER_ID
+          # Wait for MySQL to be ready again
+          until mysqladmin ping -h 127.0.0.1 -u root -proot_password --silent; do
+            sleep 1
+            echo -n .
+          done
+        fi
+        # Also set global variables as a fallback (though config file should handle this)
         mysql -u root -proot_password -h 127.0.0.1 mysql <<EOF
         SET GLOBAL character_set_server = 'utf8mb4';
         SET GLOBAL collation_server = 'utf8mb4_unicode_ci';

.github/workflows/mysql.cnf

@@ -0,0 +1,5 @@
+[mysqld]
+character-set-server=utf8mb4
+collation-server=utf8mb4_unicode_ci
+innodb-default-row-format=DYNAMIC
+

.github/workflows/mysql_settings.py

@@ -48,7 +48,9 @@ DATABASES = {
         "PORT": "",  # use default port
         "OPTIONS": {
             "charset": "utf8mb4",
-            # Note: MySQL server is configured with utf8mb4 and DYNAMIC row format at startup
+            # Note: MySQL server global settings (character set, collation, row format) are set
+            # in setup-database action before migrations run. The init_command sets per-connection
+            # variables that don't require special privileges.
             "init_command": (
                 "SET collation_connection=utf8mb4_unicode_ci, "
                 "sql_mode='STRICT_TRANS_TABLES', innodb_strict_mode=1"