If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

A deployment can use one or more SSL certificates:

• In a config map
• In a secret
• In a deployments container args (arguments)

This article describes how to list the SSL certificates in a deployments container args. 

The oc get deployments command can be used to list the deployments in a namespace

~]# oc get deployments --namespace foo
NAME      READY   UP-TO-DATE   AVAILABLE   AGE
app001    1/1     1            1           8d

The -o yaml or -o json options can be used to display more information about the deployment. In this example, app001 is a Java application with SSL certificates stored in /usr/local/secure/truststore.p12 in the container.

~]# oc get deployment/app001 --namespace foo -o yaml
spec:
  template:
    spec:
      containers:
      - env:
        - name: JAVA_OPTS
          value: -Djavax.net.ssl.trustStore=/usr/local/secure/truststore.p12