Why docker-compose fail and docker run success with postgresql? - postgresql

Question

I am tring to start a postgreSQL docker container with my mac; i use OSX 10.11.16 El Capitan with Docker Toolbox 19.03.01.
If i run:
docker run --name my_postgres -v my_dbdata:/var/lib/postgresql/data -p 54320:5432 postgres:11
all was done and i get:
my_postgres | 2019-09-17 04:51:48.908 UTC [41] LOG: database system is ready to accept connections
but if i use an .yml file like this one:
docker-compose.yml:
version: "3"
services:
db:
image: "postgres:11"
container_name: "my_postgres"
ports:
- "54320:5432"
volumes:
- my_dbdata:/var/lib/postgresql/data
volumes:
my_dbdata:
and run
docker-compose up
i get instead:
my_postgres | /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*
my_postgres |
my_postgres | 2019-09-17 04:51:49.009 UTC [41] LOG: received fast shutdown request
my_postgres | 2019-09-17 04:51:49.011 UTC [41] LOG: aborting any active transactions
my_postgres | waiting for server to shut down....2019-09-17 04:51:49.087 UTC [41] LOG: background worker "logical replication launcher" (PID 48) exited with exit code 1
my_postgres | 2019-09-17 04:51:49.091 UTC [43] LOG: shutting down
my_postgres | 2019-09-17 04:51:49.145 UTC [41] LOG: database system is shut down
Why the same think with docker-compose fail?
So many thanks in advance

Answer 1

Try the below one it worked for me
version: '3.1'
services:
db:
image: postgres
restart: always
environment:
POSTGRES_PASSWORD: mypassword
volumes:
- ./postgres-data:/var/lib/postgresql/data
ports:
- 5432:5432
Then use docker-compose up to get the logs after using the previous command use
docker-compose logs -f

Answer 2

If you are trying to access and existing volume on the host machine, you need to specify that the volume was created outside the Compose file with the external keyword like this:
version: "3.7"
services:
db:
image: postgres
volumes:
- data:/var/lib/postgresql/data
volumes:
data:
external: true
I took the example from the Compose file reference https://docs.docker.com/compose/compose-file/.
Also double check the contents of your external volume between runs, to see if it was overriden.
Please also double check your quotes, you don't need to put the image name in quotes, but I don't think that's the issue.

Answer 3

The my_dbdata named volume is not the same for the two cases.
docker run creates a volume named my_dbdata, instead docker-compose creates by default a volume called <dir>_my_dbdata
Run docker volume to list the volumes:
docker volume ls |grep my_dbdata
I suspect the volume created by docker-compose has issues and as a consequence postgres doesn't start correctly. The initialization of the database in the my_postgres container is done only once.
Try to remove the container and the volume created by docker-compose:
docker rm my_postgres
docker volume rm <dir>_my_dbdata
Hope it helps