13장. Porting containers to OpenShift using Podman

Procedure

1. List all pods and containers associated with them:

   $ podman ps -a --pod
   CONTAINER ID  IMAGE                                       COMMAND    CREATED                 STATUS                     PORTS  NAMES               POD
   5df5c48fea87  registry.access.redhat.com/ubi10/ubi:latest  /bin/bash  Less than a second ago  Up Less than a second ago         myubi               223df6b390b4
   3afdcd93de3e  k8s.gcr.io/pause:3.1                                   Less than a second ago  Up Less than a second ago         223df6b390b4-infra  223df6b390b4

2. Use the pod name or ID to generate the Kubernetes YAML file:

   $ podman generate kube mypod > mypod.yaml

   Note that the podman generate command does not reflect any Logical Volume Manager (LVM) logical volumes or physical volumes that might be attached to the container.

3. Display the mypod.yaml file:

   $ cat mypod.yaml
   # Generation of Kubernetes YAML is still under development!
   #
   # Save the output of this file and use kubectl create -f to import
   # it into Kubernetes.
   #
   # Created with podman-1.6.4
   apiVersion: v1
   kind: Pod
   metadata:
     creationTimestamp: "2020-06-09T10:31:56Z"
     labels:
   app: mypod
     name: mypod
   spec:
     containers:
     - command:
           - /bin/bash
           env:
           - name: PATH
                 value: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
           - name: TERM
                 value: xterm
           - name: HOSTNAME
           - name: container
                 value: oci
           image: registry.access.redhat.com/ubi10/ubi:latest
           name: myubi
           resources: {}
           securityContext:
                 allowPrivilegeEscalation: true
                 capabilities: {}
                 privileged: false
                 readOnlyRootFilesystem: false
           tty: true
           workingDir: /
   status: {}