Postgres DB Password not being set in Kubernetes script

Question

For some reason, the postgres instance isn't being locked down with a password using the following kubernetes script.

apiVersion: v1
kind: ReplicationController
metadata:
    name: postgres
    labels:
        name: postgres
spec:
    replicas: 1
    template:
      metadata:
        labels:
          name: postgres
      spec:
        containers:
          - resources:
            image: postgres:9.4
            name: postgres
            env:
              - name: DB_PASS
                value: password
              - name: PGDATA
                value: /var/lib/postgresql/data/pgdata
            ports:
              - containerPort: 5432
                name: postgres
            volumeMounts:
              - mountPath: /var/lib/postgresql/data
                name: postgres-persistent-storage
        volumes:
          - name: postgres-persistent-storage
            gcePersistentDisk:
              pdName: postgres-disk
              fsType: ext4

Any ideas?

Robert Bailey · Accepted Answer · 2016-02-18 07:49:25Z

1

According to the docker hub documentation for the postgres image you should be using the environment variable POSTGRES_PASSWORD instead of DB_PASSWORD.

answered Feb 18, 2016 at 7:49

Robert Bailey

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4 Comments

CodingWithoutComments Over a year ago

I should have mentioned I actually tried this as well and it didn't work. I'm wondering if the format of my script is wrong?

CodingWithoutComments Over a year ago

I figured out the problem. You have to specify the POSTGRES_PASSWORD the first time. If you don't, you cannot add it later.

Robert Bailey Over a year ago

Can you explain? Did you try to change the yaml file and patch the object? If you changed the yaml you could also do a kubectl rolling update to apply your changes because it replaces the current pods with new pods with the updated configuration.

CodingWithoutComments Over a year ago

I had to delete the pod and the volume. If I left the volume, it wouldn't pick up the added password.

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