How to develop Multi-Pod workspace

[haiye1018]

I want to develop microservice app using Eclipse che deployed in k8s, as you know, all containers defined in one devfile are deployed in one k8s pod, this will get some difficult. In the che document, I guess one workspace pod is one k8s pod, but i find the post,

• https://che.eclipse.org/using-eclipse-che-to-develop-multi-container-apps-eb45b32ffe5b
  Yevhen's workspace has Machines, Installers, Servers menu, Anyone who know how to get this style workspace?

this is my devfile, these container will be in one k8s pod,

apiVersion: 1.0.0
metadata:
  generateName: hdev-
components:
  - alias: hdev
    type: kubernetes
    reference: hdevc.yaml
    referenceContent: |
      apiVersion: v1
      kind: List
      items:
      -
        apiVersion: v1
        kind: Pod
        metadata:
          name: h1
        spec:
          restartPolicy: Never
          containers:
          - name: h1
            image: ...
            imagePullPolicy: IfNotPresent
            env:
            - name: app-11
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
      -
        apiVersion: v1
        kind: Pod
        metadata:
          name: h2
        spec:
          restartPolicy: Never
          containers:
          - name: h2
            image: ...
            imagePullPolicy: IfNotPresent
            env:
            - name: app-12
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP

[RomanNikitenko]

@haiye1018
I can see that Che 6 was used for Yevhen's demo.

Che 7 architecture differs from Che 6 one and described here: https://www.eclipse.org/che/docs/che-7/che-workspaces-architecture/

Unfortunately according to the doc I see no way to configure Multi-Pod workspace, but maybe someone can correct me if I'm wrong.

[sleshchenko]

@haiye1018 Currently Che does not support running multiple pods for one workspace, the main reason of such limitation - RWO PVC access mode. We have an issue for support RWM with multiple pods but not much progress on that #11476. Probably this will speed up when #15384 will be solved.

BTW Could you elaborate more why merging all containers into a single pod does not work for you? Probably I'm able to suggest how to work around issues you faced with single pod in the end when you configure multiple in devfile.

[haiye1018]

Thanks for your help.
@sleshchenko Multi pods have many Application scenario, especially in micro service application. My example is we want to develop an appliction based on one cluster including Zookeeper/Hadoop/SpringCloud using Che. Prior to Che, we code/debug in local machine, and the cluster is set up automatically using mutli virtual machines, so if the cluster runs in one Che Workspace Pod, the ports conflict at least. Forthermore, for the consistency between production enviroment and developing enviroment, changing the cluter's deploy policy is not the best solution, so if Che can support multi pods workspace, we can many pod like many virtual machines.

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