Don't find /var/lib/postgresql/data/ directory on ubuntu when created docker image

user_8763977 0
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I found the following mentioned at many places -

docker run -d \
    --name some-postgres \
    -e POSTGRES_PASSWORD=mysecretpassword \
    -e PGDATA=/var/lib/postgresql/data/pgdata \
    -v /custom/mount:/var/lib/postgresql/data \
    postgres

My only question is that I am unable to find /var/lib/postgresql/data/pgdata directory itself. I don't see any postgresql directory under /var/lib. Why is it? And just wonder how does it work if there is no directory?

docker ubuntu postgresql
1 Answers

The -v in your command mounts /custom/mount on your host (the machine where you run docker command) to container's /var/lib/postgresql/data. So the pgdata you are looking for is on host's /custom/mount/pgdata.

Of course, /custom/data is only an example name, you have to replace it with your real directory.

user_43156010
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