add env MAX_DB_CONNECTIONS to set the database connection limit

.env.sample

@@ -11,6 +11,8 @@ COMPOSE_FILE="compose.yml"
 COMPOSE_FILE="$COMPOSE_FILE:compose.mariadb.yml"
 #COMPOSE_FILE="$COMPOSE_FILE:compose.postgres.yml"
 
+#MAX_DB_CONNECTIONS=500
+
 ADMIN_USER=admin
 
 SECRET_DB_ROOT_PASSWORD_VERSION=v1

abra.sh

@@ -2,7 +2,7 @@
 
 export FPM_TUNE_VERSION=v5
 export NGINX_CONF_VERSION=v5
-export MY_CNF_VERSION=v4
+export MY_CNF_VERSION=v5
 export ENTRYPOINT_VERSION=v3
 
 run_occ() {

compose.mariadb.yml

@@ -15,6 +15,7 @@ services:
       - 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}
     configs:
       - source: my_tune
         target: /etc/mysql/conf.d/my-tune.cnf
@@ -41,6 +42,7 @@ configs:
   my_tune:
     name: ${STACK_NAME}_my_cnf_${MY_CNF_VERSION}
     file: my-tune.cnf
+    template_driver: golang
 
 secrets:
   db_root_password:

compose.postgres.yml

@@ -11,6 +11,7 @@ services:
 
   db:
     image: "postgres:12"
+    command: -c "max_connections=${MAX_DB_CONNECTIONS:-100}"
     volumes:
       - "postgres:/var/lib/postgresql/data"
     networks:

my-tune.cnf

@@ -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