Wikijs | Postgresql | Transport Encryption

Today I am on a quest to have all my applications running in Kubernetes containers connected to PostgreSQL to only use encrypted database connections. Earlier I did Sonarqube and posted about it. Now let’s talk about Wikijs, which I am using for my wiki.
Needless to say that the Postgresql database server is already set for encryption and pg_hba.conf has proper entries.
Wikijs is based on node.js and that has its own rules about using SSL for the database encryption. Like with my Sonar setup, I don’t want to run full chain verification, only the traffic encryption does suffice for me. However Node.js is a bit fuzzy about it and simply enabling SSL like SSL:true will not work because it throws a tantrum about a self-signed certificate. What we need to do is tell it two more things:

sslOptions: auto: false # rejectUnauthorized: false

This is documented here. How do we do it in a Kubernetes raw manifest: Using a config map and reference it in the deployment:

apiVersion: v1
kind: ConfigMap
metadata:
     name: wikijs-config
     namespace: wikijs
labels:
     app: wikijs
data:
      DB_HOST: "<db_host>
     DB_PORT: "5432"
     DB_NAME: "<db_name>"
     DB_USER: "<db_user"
     DB_SSL: '{"auto":false,"rejectUnauthorized":false}'

and the reference:

 containers:
        - name: wikijs
          image: requarks/wiki:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
          env:
            - name: DB_TYPE
              value: "postgres"
            - name: DB_HOST
              valueFrom:
                configMapKeyRef:
                  name: wikijs-config
                  key: DB_HOST
            - name: DB_PORT
              valueFrom:
                configMapKeyRef:
                  name: wikijs-config
                  key: DB_PORT
            - name: DB_NAME
              valueFrom:
                configMapKeyRef:
                  name: wikijs-config
                  key: DB_NAME
            - name: DB_USER
              valueFrom:
                configMapKeyRef:
                  name: wikijs-config
                  key: DB_USER
            - name: DB_SSL
              valueFrom:
                configMapKeyRef:
                  name: wikijs-config
                  key: DB_SSL

Replace the values in <> with your real values.
Anything else goes as usual. This way, our traffic is encrypted and we are all good to go.

Happy coding!

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sunrider

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