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Version: 3.9.1

Using different Image Registries in a Chaos Experiments

A container image registry can be defined as a collection of repositories that store container image. These can be either public or private. Few of the container image registries are Docker, Red Hat Quay, Google Container Registry. By default LitmusChaos uses DockerHub for managing the different images. These images are then used in Chaos experiments. Few images that are used in the Litmus chaos experiments are litmuschaos:k8s, litmuschaos:litmus-checker etc. With ChaosCenter, you get the privilege to use your own/custom image registries for Chaos experiments.

Before you begin​

To understand the concept of Image Registry, make sure you are aware of Chaos experiment and the different image registries that are used in it.

Steps to Update Chaos experiment Image Registry​

To updated the Chaos experiment Image Registry, you can go to Image Registry in ChaosCenter (Project Setup > Image Registry on the left nav). On clicking the Image Registry tab, you can see that the default Registry server is docker.io, Registry name is litmuschaos and it is a Public registry.



To update this, click on the Use Custom Values option and provide the following details:

  1. Custom Image Registry (Registry Server)
  2. Custom Repo (Registry Name)
  3. Registry Type Public/Private


If the Registry Type is Private, make sure to provide the secret.

Once the details are provided, click on the Save button and you can see the updated Image Registry changes.



Now while scheduling a chaos experiment, the image registry changes will be visible. Here's the code snippet from a Chaos experiment after the image registry change.

- name: install-application
      container:
        image: docker.io/testing-reg/litmus-app-deployer:latest
        args:
          - -namespace=bank
          - -typeName=resilient
          - -operation=apply
          - -timeout=400
          - -app=bank-of-anthos
          - -scope=cluster
    - name: install-chaos-experiments
      container:
        image: docker.io/testing-reg/k8s:latest

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