Che machine exec

A Golang server that creates machine-execs for Eclipse Che workspaces. It is used to spawn terminals or command processes. Che machine exec uses the JSON-RPC protocol to communicate with the client.

Building a container image

To build a container image with che-machine-exec manually:

$ docker build --no-cache -t eclipse/che-machine-exec -f build/dockerfiles/Dockerfile .

Testing che-machine-exec on OpenShift

1. Build Eclipse Che Assembly.

2. Deploy Eclipse Che on OpenShift (example templates). The output contains a link to the deployed Eclipse Che project. Use it to log in to Eclipse Che.

3. Register a new user on the login page. After login, you are redirected to the Eclipse Che user dashboard.

4. Create an Eclipse Che 7.x workspace using the default Che-Theia IDE. Then test che-machine-exec using che-theia-terminal-extension and test che-machine-exec using che-theia-task-plugin.

Testing che-machine-exec on OpenShift using Minishift

1. Build Eclipse Che Assembly.

2. Install Minishift using the following instractions:

   • Preparing to Install Minishift
   • Setting Up the Virtualization Environment

3. Install the oc tool:

   • Download the oc binary for your platform.
   • Extract and apply this binary path to the PATH system environment variable.
   • The oc tool is now availiable from the terminal:

$ oc version
oc v3.11.213
kubernetes v1.11.0+d4cacc0
features: Basic-Auth GSSAPI Kerberos SPNEGO

4. Start Minishift:

$ minishift start --memory=8GB
-- Starting local OpenShift cluster using 'kvm' hypervisor...
...
 OpenShift server started.
 The server is accessible via web console at:
     https://192.168.99.128:8443

 You are logged in as:
     User:     developer
     Password: developer

 To login as administrator:
     oc login -u system:admin

5. Store the Minishift master URL from the output of minishift start (https://192.168.42.159:8443) in the CHE_INFRA_KUBERNETES_MASTER__URL variable:

$ export CHE_INFRA_KUBERNETES_MASTER__URL=https://192.168.42.162:8443

Note: When you delete the Minishift virtual machine (minishift delete) and create it again, this URL changes.

6. Register a new user on the CHE_INFRA_KUBERNETES_MASTER__URL page.

7. Log in to Minishift using oc. Use the new username and password for it:

$ oc login --server=${CHE_INFRA_KUBERNETES_MASTER__URL}

This command activates an OpenShift context to use the Minishift instance:

8. Deploy Eclipse Che on OpenShift (example templates). The output contains a link to the deployed Eclipse Che project. Use it to log in to Eclipse Che.

9. Create an Eclipse Che 7.x workspace using the default Che-Theia IDE. Then test che-machine-exec using che-theia-terminal-extension and test che-machine-exec using che-theia-task-plugin.

Testing on Kubernetes using minikube

1. Build Eclipse Che Assembly.

2. Install a minikube virtual machine on your computer. See the minikube README.

3. Deploy Eclipse Che using Helm:

• 1. Install Helm.
• 2. Start minikube:

$ minikube start --cpus 2 --memory 8192 --extra-config=apiserver.authorization-mode=RBAC

• 3. Go to the helm/che directory:

$ cd ~/projects/che/deploy/kubernetes/helm/che

• 4. Add the cluster-admin role for the kube-system:default account:

$ kubectl create clusterrolebinding add-on-cluster-admin --clusterrole=cluster-admin \
  --serviceaccount=kube-system:default

• 5. Set the default Kubernetes context:

$ kubectl config use-context minikube

• 6. To install tiller on the cluster, first create a tiller serviceAccount:

$ kubectl create serviceaccount tiller --namespace kube-system

• 7. Then bind it to the cluster-admin role:

$ kubectl apply -f ./tiller-rbac.yaml

• 8. Install tiller itself:

$ helm init --service-account tiller

4. Start NGINX-based Ingress controller:

$ minikube addons enable ingress

5. Deploy Eclipse Che on the Kubernetes cluster using one of the following two configurations:
   • Eclipse Che creates separated namespace for each new workspace:

$ helm upgrade --install che --namespace che ./

• Eclipse Che creates all workspaces in the same namespace:

$ helm upgrade --install che --namespace=che --set global.cheWorkspacesNamespace=che ./

Note:

• To deploy multi-user Che, use the -f ./values/multi-user.yaml parameter.
• To set an Ingress domain, use the --set global.ingressDomain=<domain> parameter.
• To deploy Che using the minikube dashboard:

$ minikube dashboard

6. Create an Eclipse Che 7.x workspace using the default Che-Theia IDE. Then test che-machine-exec using che-theia-terminal-extension and test che-machine-exec using che-theia-task-plugin.

Building Eclipse Che assembly

Requiements:

• Java 8 or higher
• Maven 3.5 or higher

1. Clone Eclipse Che:

$ git clone https://github.com/eclipse/che.git ~/projects/che

2. To save time, build only the assembly-main module, not the whole Eclipse Che project.

$ cd ~/projects/che/assembly/assembly-main
$ mvn clean install -DskipTests

Testing che-machine-exec using che-theia-terminal

Eclipse Che 7.x workspaces that use the Che-Theia IDE include the che-theia-terminal extension. You can use this to test che-machine-exec.

In a Che 7 workspace:

1. Go to Terminal -> Open Terminal in specific container.
2. Select a container to create a new terminal on the bottom panel.

Alternatively, use the command palette:

1. Press Ctrl + Shift + P and type terminal.
2. Select a container with arrow keys.

Testing che-machine-exec using che-theia-task-plugin

Eclipse Che 7.x workspaces that use the Che-Theia IDE include che-theia-task-plugin. You can use this to test che-machine-exec.

1. Create a new Che-Theia task for your project:
   1. In the project root, create a .theia folder.
   2. Create a tasks.json file in the .theia folder with the following content:

{
    "tasks": [
        {
            "label": "che",
            "type": "che",
            "command": "echo hello"
        }
    ]
}

2. Run this task by going to Terminal -> Run Task...
3. After that Che-Theia shows a widget with the following output:

echo hello