Install Chaos Mesh Offline

This document describes how to install Chaos Mesh offline.

Prerequisites

Before installing Chaos Mesh, make sure that Docker is installed and the Kubernetes cluster is deployed in the offline environment. If the environment is not prepared, refer to the following documents to install Docker and deploy the Kubernetes cluster:

• Docker
• Kubernetes

Prepare installation files

Before you install Chaos Mesh offline, you need to download all Chaos Mesh images and repository compression packages from the machines with external network connection, and then copy the downloaded files into your offline environment.

Specify version number

Set the version number of Chaos Mesh as the environment variable on the machine with external network connection:

Download Chaos Mesh images

On the machine connected to external network, pull images using the version number that has been set:

docker pull pingcap/chaos-mesh:${CHAOS_MESH_VERSION}
docker pull pingcap/chaos-daemon:${CHAOS_MESH_VERSION}
docker pull pingcap/chaos-dashboard:${CHAOS_MESH_VERSION}

Save images as the tar packages:

docker save pingcap/chaos-mesh:${CHAOS_MESH_VERSION} > image-chaos-mesh.tar
docker save pingcap/chaos-daemon:${CHAOS_MESH_VERSION} > image-chaos-daemon.tar
docker save pingcap/chaos-dashboard:${CHAOS_MESH_VERSION} > image-chaos-dashboard.tar

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To simulate a DNS fault (for example, make the DNS responses return a random wrong IP address), you need to pull the additional pingcap/coredns images.

Download the repository compression package of Chaos Mesh

On the machine connected to the external network, download the zip package of Chaos Mesh:

Copy files

After downloading all the files required for installation, you need to copy these files to the offline environment:

• image-chaos-mesh.tar
• image-chaos-daemon.tar
• image-chaos-dashboard.tar
• chaos-mesh.zip

Install Chaos Mesh

After copying the tar package of the Chaos Mesh images and the zip package of the repository to the offline environment, take the following steps to install Chaos Mesh.

Step 1: Load Chaos Mesh images

Load images from the tar package:

docker load < image-chaos-mesh.tar
docker load < image-chaos-daemon.tar
docker load < image-chaos-dashboard.tar

Step 2: Push images to Registry

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Before pushing images to Registry, make sure that Registry has been deployed in the offline environment. If Registry is not deployed, refer to Docker Registry for the deployment method.

Set the Chaos Mesh version and the Registry address as the environment variable:

Mark the images so that the images point to the Registry:

export CHAOS_MESH_IMAGE=$DOCKER_REGISTRY/pingcap/chaos-mesh:${CHAOS_MESH_VERSION}
export CHAOS_DAEMON_IMAGE=$DOCKER_REGISTRY/pingcap/chaos-daemon:${CHAOS_MESH_VERSION}
export CHAOS_DASHBOARD_IMAGE=$DOCKER_REGISTRY/pingcap/chaos-dashboard:${CHAOS_MESH_VERSION}
docker image tag pingcap/chaos-mesh:${CHAOS_MESH_VERSION} $CHAOS_MESH_IMAGE
docker image tag pingcap/chaos-daemon:${CHAOS_MESH_VERSION} $CHAOS_DAEMON_IMAGE
docker image tag pingcap/chaos-dashboard:${CHAOS_MESH_VERSION} $CHAOS_DASHBOARD_IMAGE

Push images to Registry:

docker push $CHAOS_MESH_IMAGE
docker push $CHAOS_DAEMON_IMAGE
docker push $CHAOS_DASHBOARD_IMAGE

Step 3: Install Chaos Mesh using Helm

Unpack the zip package of Chaos Mesh:

unzip chaos-mesh.zip -d chaos-mesh && cd chaos-mesh

Create the namespace:

kubectl create ns chaos-testing

Execute the installation command. When executing the installation command, you need to specify the namespace of Chaos Mesh and the image value of each component:

Verify the installation

To check the running status of Chaos Mesh, execute the following command:

kubectl get po -n chaos-testing

The expected output is as follows:

NAME                                        READY   STATUS    RESTARTS   AGE
chaos-controller-manager-69fd5c46c8-xlqpc   1/1     Running   0          2d5h
chaos-daemon-jb8xh                          1/1     Running   0          2d5h
chaos-dashboard-98c4c5f97-tx5ds             1/1     Running   0          2d5h

If your actual output is similar to the expected output with NAME, READY, STATUS, RESTARTS, and AGE, it means that Helm is installed successfully.

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If the STATUS of your actual output is not Running, then execute the following command to check the Pod details, and troubleshoot issues according to the error information.

# Take the chaos-controller as an example
kubectl describe po -n chaos-testing chaos-controller-manager-69fd5c46c8-xlqpc

Run Chaos experiments

After verifying that the installation is complete, you can run a Chaos experiment to experience the features of Chaos Mesh.

For the method to run the experiment, it is recommended to refer to Run a Chaos experiment. After successfully creating the experiment, you can observe the running status of the experiment on the Chaos Dashboard.