Permission denied: '/var/lib/pgadmin/sessions' in Docker - linux

Question

I have got the same problem described in this post, but inside a docker container.
I don't really know where my pgadmin file reside to edit it's default path.How do I go about fixing this issue? Please be as detailed as possible because I don't know how to docker.
Here is an abstract of the verbatim of docker-compose up command:
php-worker_1 | 2020-11-11 05:50:13,700 INFO spawned: 'laravel-worker_03' with pid 67
pgadmin_1 | [2020-11-11 05:50:13 +0000] [223] [INFO] Worker exiting (pid: 223)
pgadmin_1 | WARNING: Failed to set ACL on the directory containing the configuration database:
pgadmin_1 | [Errno 1] Operation not permitted: '/var/lib/pgadmin'
pgadmin_1 | HINT : You may need to manually set the permissions on
pgadmin_1 | /var/lib/pgadmin to allow pgadmin to write to it.
pgadmin_1 | ERROR : Failed to create the directory /var/lib/pgadmin/sessions:
pgadmin_1 | [Errno 13] Permission denied: '/var/lib/pgadmin/sessions'
pgadmin_1 | HINT : Create the directory /var/lib/pgadmin/sessions, ensure it is writeable by
pgadmin_1 | 'pgadmin', and try again, or, create a config_local.py file
pgadmin_1 | and override the SESSION_DB_PATH setting per
pgadmin_1 | https://www.pgadmin.org/docs/pgadmin4/4.27/config_py.html
pgadmin_1 | /usr/local/lib/python3.8/os.py:1023: RuntimeWarning: line buffering (buffering=1) isn't supported in binary mode, the default buffer size will be used
pgadmin_1 | return io.open(fd, *args, **kwargs)
pgadmin_1 | [2020-11-11 05:50:13 +0000] [224] [INFO] Booting worker with pid: 224
my docker-compose.yml:
### pgAdmin ##############################################
pgadmin:
image: dpage/pgadmin4:latest
environment:
- "PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL}"
- "PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}"
ports:
- "${PGADMIN_PORT}:80"
volumes:
- ${DATA_PATH_HOST}/pgadmin:/var/lib/pgadmin
depends_on:
- postgres
networks:
- frontend
- backend

Answer 1

Okay. looks like problem appears when you try to run pgadmin service.
This part
### pgAdmin ##############################################
pgadmin:
image: dpage/pgadmin4:latest
environment:
- "PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL}"
- "PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}"
ports:
- "${PGADMIN_PORT}:80"
volumes:
- ${DATA_PATH_HOST}/pgadmin:/var/lib/pgadmin
depends_on:
- postgres
networks:
- frontend
- backend
As you can see you trying to mount local directory ${DATA_PATH_HOST}/pgadmin into container's /var/lib/pgadmin
volumes:
- ${DATA_PATH_HOST}/pgadmin:/var/lib/pgadmin
As you can read in this article your local ${DATA_PATH_HOST}/pgadmin directory's UID and GID must be 5050. Is this 5050?
You can check it by running
ls -l ${DATA_PATH_HOST}
Output will be like
drwxrwxr-x 1 5050 5050 12693 Nov 11 14:56 pgadmin
or
drwxrwxr-x 1 SOME_USER SOME_GROUP 12693 Nov 11 14:56 pgadmin
if SOME_USER's and SOME_GROUP's IDs are 5050, it is okay. 5050 as is also okay. If not, try to do as described in article above.
sudo chown -R 5050:5050 ${DATA_PATH_HOST}/pgadmin
Also you need to check is environment variable exists:
# run it as same user as you running docker-compose
echo ${DATA_PATH_HOST}
If output will be empty you need to set ${DATA_PATH_HOST} or allow docker to read variables from file. There are many ways to do it.

Answer 2

If you're on Windows, add this line to your docker-compose.yml. It gives container an access to your local folder
version: "3.9"
services:
postgres:
user: root <- this one
container_name: postgres_container
image: postgres:14.2

Answer 3

When running in kubernetes environment, I had to add these values.
spec:
containers:
- name: pgadmin
image: dpage/pgadmin4:5.4
securityContext:
runAsUser: 0
runAsGroup: 0