Second mariadb+phpmyadmin Docker container access denied - docker

Question

I have working mariadb+phpmyadmin container on my local dev computer.
I would like to create another mariadb+phpmyadmin container, but I'm getting error: [Warning] Access denied for user 'root'#'127.0.0.1' (using password: YES).
I can't figure out where is a problem. I tried to add parameter: MYSQL_HOST: '%' and modify line:
test: mysqladmin ping -h $$MYSQL_HOST -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
but still no success.
Working docker-compose.yml
version: '3.9'
networks:
rosetta_net:
driver: bridge
services:
maria_db_service:
image: mariadb:10.5.9
container_name: 'rosetta-api-db'
restart: always
ports:
- '3306:3306'
environment:
MYSQL_ROOT_PASSWORD: 'root123'
MYSQL_USER: 'root'
MYSQL_PASSWORD: 'root'
MYSQL_DATABASE: 'rosetta'
volumes:
- ./docker/db/mariadb/data:/var/lib/mysql
- ./docker/db/mariadb/my.cnf:/etc/mysql/conf.d/my.cnf
networks:
- rosetta_net
healthcheck:
test: mysqladmin ping -h 127.0.0.1 -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
interval: 5s
retries: 5
phpmyadmin_service:
image: phpmyadmin/phpmyadmin:5.1
container_name: 'rosetta-api-db-admin'
ports:
- '8081:80'
environment:
PMA_HOST: db_server
MAX_EXECUTION_TIME: 3600
UPLOAD_LIMIT: 128M
depends_on:
maria_db_service:
condition: service_healthy
volumes:
- ./docker/db/phpmyadmin/sites-enabled:/etc/apache2/sites-enabled
- db_rosetta_data:/var/www/html
networks:
- rosetta_net
volumes:
db_rosetta_data:
Not working docker-compose.yml (it is very similar to previous one):
version: '3.9'
networks:
parkovisko_net:
driver: bridge
services:
maria_db_service:
image: mariadb:10.5.9
container_name: 'parkovisko-api-db'
restart: always
ports:
- '3307:3306'
environment:
MYSQL_ROOT_PASSWORD: 'root123'
MYSQL_USER: 'root'
MYSQL_PASSWORD: 'root'
MYSQL_DATABASE: 'parkovisko'
volumes:
- ./docker/db/mariadb/data:/var/lib/mysql
- ./docker/db/mariadb/my.cnf:/etc/mysql/conf.d/my.cnf
networks:
- parkovisko_net
healthcheck:
test: mysqladmin ping -h 127.0.0.1 -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
interval: 5s
retries: 5
phpmyadmin_service:
image: phpmyadmin/phpmyadmin:5.1
container_name: 'parkovisko-api-db-admin'
ports:
- '8083:80'
environment:
PMA_HOST: db_server
MAX_EXECUTION_TIME: 3600
UPLOAD_LIMIT: 128M
depends_on:
maria_db_service:
condition: service_healthy
volumes:
- ./docker/db/phpmyadmin/sites-enabled:/etc/apache2/sites-enabled
- db_parkovisko_data:/var/www/html
networks:
- parkovisko_net
volumes:
db_parkovisko_data:

Answer 1

The problem is that you are using the same volumes for both of the docker-compose files, so MYSQL cant initialize mounting the same volumes for 2 containers
There are multiple ways to fix this:
Change it to named volumes:
volumes:
- mariadb-data:/var/lib/mysql
Copy the data to another folder with cp and then mount it again (assuming you want the same data on both containers).
The same applies to .cnf and phpmyadmin containers