Changed roles to new docker backup procedure

roles/backup-docker-to-local/tasks/main.yml

@@ -34,10 +34,15 @@
   notify: restart backup-docker-to-local.timer
   when: run_once_backup_docker_to_local is not defined
 
-- name: create {{backup_docker_to_local_folder}}databases.csv
+- name: seed database values
-  copy:
+  command:
-    src: "{{ inventory_dir }}/files/{{ inventory_hostname }}{{backup_docker_to_local_folder}}databases.csv"
+    cmd: "python database_entry_seeder.py databases.csv {{database_instance}} {{database_host}} {{database_databasename}} {{database_username}} {{database_password}}"
-    dest: "{{backup_docker_to_local_folder}}databases.csv"
+    chdir: "{{backup_docker_to_local_folder}}"
+
+- name: Set file permissions for databases.csv to be readable, writable, and executable by root only
+  ansible.builtin.file:
+    path: "{{ backup_docker_to_local_folder }}databases.csv"
+    mode: '0700'
     owner: root
     group: root
   when: run_once_backup_docker_to_local is not defined

roles/docker-akaunting/templates/db.env.j2

@@ -1,9 +1,9 @@
 # These could be changed
-MYSQL_DATABASE=akaunting
+MYSQL_DATABASE={{database_databasename}}
-MYSQL_USER=admin
+MYSQL_USER={{database_username}}
 
 # This should definitely be changed to something long and random
-MYSQL_PASSWORD={{akaunting_database_password}}
+MYSQL_PASSWORD={{database_password}}
 
 # You should probably leave this
-MYSQL_ROOT_PASSWORD={{akaunting_database_password}}
+MYSQL_ROOT_PASSWORD={{database_password}}

roles/docker-akaunting/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}akaunting/"
+database_instance:  "akaunting"
+database_host:      "akaunting-db"
+database_databasename:  "{{database_instance}}"
+database_username:  "admin"
+database_password:  "{{akaunting_database_password}}"

roles/docker-attendize/templates/docker-compose.yml.j2

@@ -24,24 +24,9 @@ services:
     volumes:
       - .:/usr/share/nginx/html
       - .:/var/www
-  database:
+
-    logging:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-      driver: journald
+  
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "attendize"
-      MYSQL_USER: "attendize"
-      MYSQL_PASSWORD: "{{attendize_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{attendize_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=attendize --password={{attendize_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
   maildev:
     image: maildev/maildev
     ports:

roles/docker-attendize/vars/main.yml

@@ -1,3 +1,8 @@
 ---
 docker_compose_instance_directory:  "{{path_docker_compose_instances}}attendize/"
-mail_interface_domain:          "mail.{{domain}}"
+mail_interface_domain:              "mail.{{domain}}"
+database_instance:                  "attendize"
+database_host:                      "database"
+database_databasename:              "{{database_instance}}"
+database_username:                  "{{database_instance}}"
+database_password:                  "{{attendize_database_password}}"

roles/docker-bigbluebutton/vars/main.yml

@@ -1 +1,6 @@
-docker_compose_instance_directory: "{{path_docker_compose_instances}}bigbluebutton/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}bigbluebutton/"
+database_instance:      "bigbluebutton"
+database_host:          "postgres"
+database_databasename:  "greenlight-v3"
+database_username:  	  "postgres"
+database_password:  	  ""

roles/docker-gitea/templates/docker-compose.yml.j2

@@ -10,10 +10,10 @@ services:
       - USER_UID=1000
       - USER_GID=1000
       - DB_TYPE=mysql
-      - DB_HOST=database:3306
+      - DB_HOST={{database_host}}:3306
-      - DB_NAME=gitea
+      - DB_NAME={{database_databasename}}
-      - DB_USER=gitea
+      - DB_USER={{database_username}}
-      - DB_PASSWD={{gitea_database_password}}
+      - DB_PASSWD={{database_password}}
       - SSH_PORT={{ssh_port}}
       - SSH_LISTEN_PORT=22
       - DOMAIN={{domain}}
@@ -31,24 +31,7 @@ services:
       - /etc/localtime:/etc/localtime:ro
     depends_on:
       - database
-  database:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-    logging:
-      driver: journald
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "gitea"
-      MYSQL_USER: "gitea"
-      MYSQL_PASSWORD: "{{gitea_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{gitea_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=gitea --password={{gitea_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
 volumes:
   database:
   data:

roles/docker-gitea/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}gitea/"
+database_instance:  "gitea"
+database_host:      "{{database_instance}}"
+database_databasename:  "{{database_instance}}"
+database_username:  "{{database_instance}}"
+database_password:  "{{gitea_database_password}}"

roles/docker-joomla/templates/docker-compose.yml.j2

@@ -6,10 +6,10 @@ services:
     logging:
       driver: journald
     environment:
-      JOOMLA_DB_HOST: "database:3306"
+      JOOMLA_DB_HOST: "{{database_host}}:3306"
-      JOOMLA_DB_USER: "joomla"
+      JOOMLA_DB_USER: "{{database_username}}"
-      JOOMLA_DB_PASSWORD: "{{joomla_database_password}}"
+      JOOMLA_DB_PASSWORD: "{{database_password}}"
-      JOOMLA_DB_NAME: "joomla"
+      JOOMLA_DB_NAME: "{{database_databasename}}"
     restart: always
     links:
       - database
@@ -17,19 +17,9 @@ services:
       - data:/var/www/html
     ports:
       - "127.0.0.1:{{http_port}}:80"
-  database:
+
-    image: mariadb
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-    logging:
+
-      driver: journald
-    environment:
-      MYSQL_DATABASE: "joomla"
-      MYSQL_USER: "joomla"
-      MYSQL_PASSWORD: "{{joomla_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{joomla_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    restart: always
 volumes:
   database:
   data:

roles/docker-joomla/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}joomla/"
+database_instance:  	  "joomla"
+database_host:      	  "database"
+database_databasename:  "{{database_instance}}"
+database_username:  	  "{{database_instance}}"
+database_password:  	  "{{joomla_database_password}}"

roles/docker-listmonk/templates/docker-compose.yml.j2

@@ -1,35 +1,22 @@
 version: "3.7"
 
-x-application-defaults: &application-defaults
-  restart: unless-stopped
-  image: listmonk/listmonk:latest
-  ports:
-    - "127.0.0.1:{{http_port}}:9000"
-  networks:
-    - listmonk
-  environment:
-    - TZ=Etc/UTC
-
-x-database-defaults: &database-defaults
-  image: postgres:13-alpine
-  ports:
-    - "9432:5432"
-  networks:
-    - listmonk
-  environment:
-    - POSTGRES_PASSWORD={{listmonk_database_password}}
-    - POSTGRES_USER=listmonk
-    - POSTGRES_DB=listmonk
-  restart: unless-stopped
-  healthcheck:
-    test: ["CMD-SHELL", "pg_isready -U listmonk"]
-    interval: 10s
-    timeout: 5s
-    retries: 6
-
 services:
   database:
-    <<: *database-defaults
+    image: postgres:13-alpine
+    ports:
+      - "9432:5432"
+    networks:
+      - listmonk
+    environment:
+      - POSTGRES_PASSWORD={{database_password}}
+      - POSTGRES_USER={{database_username}}
+      - POSTGRES_DB={{database_databasename}}
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U {{database_username}}"]
+      interval: 10s
+      timeout: 5s
+      retries: 6
     container_name: database
     volumes:
       - type: volume
@@ -37,7 +24,14 @@ services:
         target: /var/lib/postgresql/data
 
   application:
-    <<: *application-defaults
+    restart: unless-stopped
+    image: listmonk/listmonk:latest
+    ports:
+      - "127.0.0.1:{{http_port}}:9000"
+    networks:
+      - listmonk
+    environment:
+      - TZ=Etc/UTC
     container_name: listmonk_application
     depends_on:
       - database

roles/docker-listmonk/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}listmonk/"
+database_instance:  	"listmonk"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{listmonk_database_password}}"

roles/docker-mailu/templates/docker-compose.yml.j2

@@ -20,25 +20,8 @@ services:
       - resolver
     dns:
       - 192.168.203.254
-  
+
-  database:
+{% include 'templates/docker-mariadb-service.yml.j2' %}  
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "mailu"
-      MYSQL_USER: "mailu"
-      MYSQL_PASSWORD: "{{mailu_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{mailu_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=mailu --password={{mailu_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
-    logging:
-      driver: journald
     depends_on:
       - resolver
     dns:

roles/docker-mailu/templates/mailu.env.j2

@@ -140,15 +140,15 @@ LOG_LEVEL=WARNING
 # Database settings
 ###################################
 DB_FLAVOR=mysql
-DB_USER=mailu
+DB_USER={{database_username}}
-DB_PW={{mailu_database_password}}
+DB_PW={{database_password}}
-DB_HOST=database:3306
+DB_HOST={{database_host}}:3306
-DB_NAME=mailu
+DB_NAME={{database_databasename}}
 ROUNDCUBE_DB_FLAVOR=mysql
-ROUNDCUBE_DB_USER=mailu
+ROUNDCUBE_DB_USER={{database_username}}
-ROUNDCUBE_DB_PW={{mailu_database_password}}
+ROUNDCUBE_DB_PW={{database_password}}
-ROUNDCUBE_DB_NAME=mailu
+ROUNDCUBE_DB_NAME={{database_databasename}}
-ROUNDCUBE_DB_HOST=database:3306
+ROUNDCUBE_DB_HOST={{database_host}}:3306
 
 
 API_TOKEN={{mailu_api_token}}

roles/docker-mailu/vars/main.yml

@@ -1 +1,6 @@
-docker_compose_instance_directory: "{{path_docker_compose_instances}}mailu/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}mailu/"
+database_instance:  	"mailu"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{mailu_database_password}}"

roles/docker-mastodon/templates/.env.production.j2

@@ -5,11 +5,11 @@ SECRET_KEY_BASE={{mastodon_secret_key_base}}
 OTP_SECRET={{mastodon_otp_secret}}
 VAPID_PRIVATE_KEY={{mastodon_vapid_private_key}}
 VAPID_PUBLIC_KEY={{mastodon_vapid_public_key}}
-DB_HOST=database
+DB_HOST={{database_host}}
 DB_PORT=5432
-DB_NAME=postgres
+DB_NAME={{database_databasename}}
-DB_USER=postgres
+DB_USER={{database_username}}
-DB_PASS=
+DB_PASS={{database_password}}
 REDIS_HOST=redis
 REDIS_PORT=6379
 REDIS_PASSWORD=

roles/docker-mastodon/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}mastodon/"
+database_instance:  	  "mastodon"
+database_host:      	  "database"
+database_databasename:  "postgres" # todo: Change this to standart name scheme for future setups
+database_username:  	  "postgres" # todo: Change this to standart name scheme for future setups
+database_password:  	  "" # todo: Change this to standart name scheme for future setups

roles/docker-matomo/templates/docker-compose.yml.j2

@@ -9,35 +9,20 @@ services:
     ports:
       - "127.0.0.1:{{http_port}}:80"
     environment:
-      MATOMO_DATABASE_HOST: "database:3306"
+      MATOMO_DATABASE_HOST: "{{database_host}}:3306"
       MATOMO_DATABASE_ADAPTER: "mysql"
-      MATOMO_DATABASE_USERNAME: "matomo"
+      MATOMO_DATABASE_USERNAME: "{{database_username}}"
-      MATOMO_DATABASE_PASSWORD: "{{matomo_database_password}}"
+      MATOMO_DATABASE_PASSWORD: "{{database_password}}"
-      MATOMO_DATABASE_DBNAME: "matomo"
+      MATOMO_DATABASE_DBNAME: "{{database_databasename}}"
     links:
       - database
     depends_on:
       - database
     volumes:
       - data:/var/www/html
-  database:
+
-    logging:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-      driver: journald
+
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "matomo"
-      MYSQL_USER: "matomo"
-      MYSQL_PASSWORD: "{{matomo_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{matomo_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=matomo --password={{matomo_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
 volumes:
   database:
   data:

roles/docker-matomo/vars/main.yml

@@ -1,2 +1,7 @@
 ---
-docker_compose_instance_directory: "{{path_docker_compose_instances}}matomo/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}matomo/"
+database_instance:  	  "matomo"
+database_host:      	  "database"
+database_databasename:  "{{database_instance}}"
+database_username:  	  "{{database_instance}}"
+database_password:  	  "{{matomo_database_password}}"

roles/docker-matrix-compose/templates/docker-compose.yml.j2

@@ -26,12 +26,12 @@ services:
     volumes:
       - database:/var/lib/postgresql/data
     environment:
-      - POSTGRES_DB=matrix
+      - POSTGRES_DB={{database_databasename}}
-      - POSTGRES_USER=matrix
+      - POSTGRES_USER={{database_username}}
-      - POSTGRES_PASSWORD={{matrix_database_password}}
+      - POSTGRES_PASSWORD={{database_password}}
       - POSTGRES_INITDB_ARGS=--encoding=UTF8 --locale=C
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U matrix"]
+      test: ["CMD-SHELL", "pg_isready -U {{database_username}}"]
       interval: 10s
       timeout: 5s
       retries: 6

roles/docker-matrix-compose/vars/main.yml

@@ -1,2 +1,7 @@
 ---
-docker_compose_instance_directory: "{{path_docker_compose_instances}}matrix/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}matrix/"
+database_instance:  	"matrix"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{matrix_database_password}}"

roles/docker-mybb/templates/docker-compose.yml.j2

@@ -25,24 +25,9 @@ services:
     volumes:
     - "{{docker_compose_instance_confd_directory}}:{{target_mount_conf_d_directory}}:ro"
     - "data:/var/www/html:ro"
-  database:
+
-    logging:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-      driver: journald
+
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "mybb"
-      MYSQL_USER: "mybb"
-      MYSQL_PASSWORD: "{{mybb_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{mybb_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=mybb --password={{mybb_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
 volumes:
   database:
   data:

roles/docker-mybb/vars/main.yml

@@ -4,3 +4,8 @@ docker_compose_instance_confd_directory: "{{docker_compose_instance_directory}}c
 docker_compose_instance_confd_defaultconf_file: "{{docker_compose_instance_confd_directory}}default.conf"
 target_mount_conf_d_directory: "{{nginx_servers_directory}}"
 source_domain: "mybb.{{top_domain}}"
+database_instance:  	"mybb"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{mybb_database_password}}"

roles/docker-nextcloud/templates/docker-compose.yml.j2

@@ -11,26 +11,26 @@ services:
     volumes:
       - data:/var/www/html
     environment:
-      MYSQL_DATABASE: "nextcloud"
+      MYSQL_DATABASE: "{{database_databasename}}"
-      MYSQL_USER: "nextcloud"
+      MYSQL_USER: "{{database_username}}"
-      MYSQL_PASSWORD: "{{nextcloud_database_password}}"
+      MYSQL_PASSWORD: "{{database_password}}"
-      MYSQL_HOST: database:3306
+      MYSQL_HOST: {{database_host}}:3306
   database:
     logging:
       driver: journald
     image: mariadb:10.5
     command: "--transaction-isolation=READ-COMMITTED --binlog-format=ROW"
     environment:
-      MYSQL_DATABASE: "nextcloud"
+      MYSQL_DATABASE: "{{database_databasename}}"
-      MYSQL_USER: "nextcloud"
+      MYSQL_USER: "{{database_username}}"
-      MYSQL_PASSWORD: "{{nextcloud_database_password}}"
+      MYSQL_PASSWORD: "{{database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{nextcloud_database_password}}"
+      MYSQL_ROOT_PASSWORD: "{{database_password}}"
       MARIADB_AUTO_UPGRADE: "1"
     volumes:
       - database:/var/lib/mysql
     restart: always
     healthcheck:
-      test: "/usr/bin/mariadb --user=nextcloud --password={{nextcloud_database_password}} --execute \"SHOW DATABASES;\""
+      test: "/usr/bin/mariadb --user={{database_username}} --password={{database_password}} --execute \"SHOW DATABASES;\""
       interval: 3s
       timeout: 1s
       retries: 5

roles/docker-nextcloud/vars/main.yml

@@ -1,2 +1,7 @@
 ---
-docker_compose_instance_directory: "{{path_docker_compose_instances}}nextcloud/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}nextcloud/"
+database_instance:  	"nextcloud"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{nextcloud_database_password}}"

roles/docker-openproject/templates/env.j2

@@ -12,8 +12,8 @@ OPENPROJECT_HOST__NAME={{domain}}
 PORT=127.0.0.1:{{http_port}}
 OPENPROJECT_RAILS__RELATIVE__URL__ROOT=
 IMAP_ENABLED=false
-POSTGRES_PASSWORD="{{ openproject_database_password }}"
+POSTGRES_PASSWORD="{{ database_password }}"
-DATABASE_URL="postgres://postgres:{{ openproject_database_password }}@db/openproject?pool=20&encoding=unicode&reconnect=true"
+DATABASE_URL="postgres://{{ database_username }}:{{ database_password }}@{{database_host}}/{{database_databasename}}?pool=20&encoding=unicode&reconnect=true"
 RAILS_MIN_THREADS=4
 RAILS_MAX_THREADS=16
 

roles/docker-openproject/vars/main.yml

@@ -1,4 +1,9 @@
 repository_directory: "{{ path_docker_compose_instances }}openproject/"
 docker_compose_instance_directory: "{{repository_directory}}compose/"
 docker_compose_file_path: "{{docker_compose_instance_directory}}docker-compose.yml"
-docker_compose_backup_path: "/tmp/openproject-docker-compose-backup.yml"
+docker_compose_backup_path: "/tmp/openproject-docker-compose-backup.yml"
+database_instance:  	"openproject"
+database_host:      	"db"
+database_databasename:  "{{database_instance}}"
+database_username:  	"postgres"
+database_password:  	"{{openproject_database_password}}"

roles/docker-peertube/templates/env.j2

@@ -1,11 +1,11 @@
 # Database / Postgres service configuration
-POSTGRES_USER=peertube
+POSTGRES_USER={{database_username}}
 POSTGRES_PASSWORD={{peertube_database_password}}
-POSTGRES_DB=peertube
+POSTGRES_DB={{database_databasename}}
-PEERTUBE_DB_USERNAME=peertube
+PEERTUBE_DB_USERNAME={{database_username}}
 PEERTUBE_DB_PASSWORD={{peertube_database_password}}
 PEERTUBE_DB_SSL=false
-PEERTUBE_DB_HOSTNAME=database
+PEERTUBE_DB_HOSTNAME={{database_host}}
 
 # PeerTube server configuration
 PEERTUBE_WEBSERVER_HOSTNAME={{domain}}

roles/docker-peertube/vars/main.yml

@@ -1 +1,6 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}peertube/"
+database_instance:  	"peertube"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{peertube_database_password}}"

roles/docker-pixelfed/templates/docker-compose.yml.j2

@@ -38,20 +38,9 @@ services:
       interval: 60s
       timeout: 5s
       retries: 1
-  database:
+
-    logging:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-      driver: journald
+
-    image: mariadb
-    restart: always
-    env_file:
-      - ./env
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=pixelfed --password={{pixelfed_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
   redis:
     image: redis:alpine
     restart: always

roles/docker-pixelfed/vars/main.yml

@@ -1,2 +1,7 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}pixelfed/"
 nginx_docker_reverse_proxy_extra_configuration: "client_max_body_size 512M;"
+database_instance:  "pixelfed"
+database_host:      "{{database_instance}}"
+database_databasename:  "{{database_instance}}"
+database_username:  "{{database_instance}}"
+database_password:  "{{pixelfed_database_password}}"

roles/docker-wordpress/templates/docker-compose.yml.j2

@@ -11,34 +11,19 @@ services:
     ports:
       - "127.0.0.1:{{http_port}}:80"
     environment:
-      WORDPRESS_DB_HOST:      database:3306
+      WORDPRESS_DB_HOST:      "{{database_host}}:3306"
-      WORDPRESS_DB_USER:      "wordpress"
+      WORDPRESS_DB_USER:      "{{database_username}}"
-      WORDPRESS_DB_PASSWORD:  "{{wordpress_database_password}}"
+      WORDPRESS_DB_PASSWORD:  "{{database_password}}"
-      WORDPRESS_DB_NAME:      "wordpress"
+      WORDPRESS_DB_NAME:      "{{database_databasename}}"
     links:
       - database
     volumes:
       - data:/var/www/html
     depends_on:
       - database
-  database:
+
-    logging:
+{% include 'templates/docker-mariadb-service.yml.j2' %}
-      driver: journald
+
-    image: mariadb
-    restart: always
-    environment:
-      MYSQL_DATABASE: "wordpress"
-      MYSQL_USER: "wordpress"
-      MYSQL_PASSWORD: "{{wordpress_database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{wordpress_database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user=wordpress --password={{wordpress_database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
 volumes:
   database:
   data:

roles/docker-wordpress/vars/main.yml

@@ -1,2 +1,7 @@
 docker_compose_instance_directory: "{{path_docker_compose_instances}}wordpress/"
 wordpress_max_upload_size: "64M"
+database_instance:  	"wordpress"
+database_host:      	"database"
+database_databasename:  "{{database_instance}}"
+database_username:  	"{{database_instance}}"
+database_password:  	"{{wordpress_database_password}}"

roles/docker-yourls/vars/main.yml

@@ -1 +1,6 @@
-docker_compose_instance_directory: "{{path_docker_compose_instances}}yourls/"
+docker_compose_instance_directory: "{{path_docker_compose_instances}}yourls/"
+database_instance:    	"yourls"
+database_host:      	  "database"
+database_databasename:  "{{database_instance}}"
+database_username:  	  "{{database_instance}}"
+database_password:  	  "{{yourls_database_password}}"

templates/docker-mariadb-service.yml.j2

@@ -0,0 +1,18 @@
+  database:
+    logging:
+      driver: journald
+    image: mariadb
+    restart: always
+    environment:
+      MYSQL_DATABASE: "{{database_databasename}}"
+      MYSQL_USER: "{{database_username}}"
+      MYSQL_PASSWORD: "{{database_password}}"
+      MYSQL_ROOT_PASSWORD: "{{database_password}}"
+      MARIADB_AUTO_UPGRADE: "1"
+    volumes:
+      - database:/var/lib/mysql
+    healthcheck:
+      test: "/usr/bin/mariadb --user={{database_username}} --password={{database_password}} --execute \"SHOW DATABASES;\""
+      interval: 3s
+      timeout: 1s
+      retries: 5