# Clusters

The Service Lifecycle Management enables the installation of new clusters and the integration of existing clusters (managed clusters). To deploy a service offering into a cluster, the corresponding deployment capability must have the deployment type of the service offering defined in the property supportedDeploymentTypes(see section Deployment Capabilites for details).

# Install new clusters

A corresponding cluster deployment capability must be available to allow the installation of a new cluster. That deployment capability must have an INSTALL action and a definition for clusterMemberTypes.

Example from the official K8S deployment capability (opens new window):

{
    ...
    "actions": {
        ...
        "INSTALL": {
        "capabilityActionClass": "AwxCapabilityAction",
        "capabilityActionType": "INSTALL",
        "awxRepo": "https://github.com/eclipse-slm/slm-dc-k8s",
        "awxBranch": "main",
        "playbook": "install.yml",
        ...
    },
    ...
    "clusterMemberTypes": [
        {
            "name": "k8s_master",
            "prettyName": "Control-Plane Master",
            "minNumber": 3,
            "scalable": false
        },
        {
            "name": "k8s_node",
            "prettyName": "Worker",
            "minNumber": 1,
            "scalable": true
        },
        {
            "name": "haproxy",
            "prettyName": "External Proxy",
            "minNumber": 1,
            "scalable": false
        }
    ],
    ...
}

# Install new Kubernetes clusters

The Service Lifecycle Management provides an official K8S deployment capability (opens new window), which supports the installation of new clusters. At least 5 hosts are required to set up a new Kubernetes cluster.

Example:

  • Go to the Resource tab and press the + button in the bottom right corner.

  • Select ADD EXISTING.

  • Select Cluster.

  • Configure cluster

    • Select Create Methode Use existing resources.
    • Select Cluster Type Kubernetes.
    • Assign the hosts to the member types.
    • Press CREATE, and the automation to set up your Kubernetes cluster will be triggered. It will take a few minutes.

<img :src='/img/figures/use/cluster-create-new-4.png')">

  • After the automation has finished, your new Kubernetes cluster will be shown in the Resources overview.

# Add managed clusters

Already existing clusters be added as managed clusters. To allow the addition of a managed cluster, a corresponding cluster deployment capability must be available. That deployment capability must have an INSTALL action with the property skipable: true. Configuration parameters in the action, can be used to query information required for accessing the cluster.

Example from the official K8S deployment capability (opens new window):

{
    ...
    "actions": {
        ...
        "INSTALL": {
            "capabilityActionClass": "AwxCapabilityAction",
            "capabilityActionType": "INSTALL",
            "awxRepo": "https://github.com/eclipse-slm/slm-dc-k8s",
            "awxBranch": "main",
            "playbook": "install.yml",
            "skipable": true,
            "configParameters": [
                {
                "name": "kubeconfig",
                "prettyName": "Kube Config",
                "description": "...",
                "secret": true,
                "valueType": "FILE",
                "requiredType": "SKIP"
                },
                {
                "name": "namespace",
                "prettyName": "Namespace",
                "description": "...",
                "secret": true,
                "valueType": "STRING",
                "requiredType": "SKIP"
                }
            ]
        },
        ...
    },
    ...
}

# Kubernetes Clusters

The Service Lifecycle Management provides an official K8S deployment capability (opens new window), which supports managed clusters. It requires a kubeconfig file (opens new window) and a namespace in the cluster. The Service Lifecycle Management will deploy all services into this namespace.

Example:

  • Go to the Resource tab and press the + button in the bottom right corner.

  • Select ADD EXISTING.

  • Select Cluster.

  • Add details of cluster

    • Select Cluster Type Kubernetes.
    • Upload or paste the kubeconfig file of the Kubernetes cluster you want to add.
    • Enter the name of the namespace where the Service Lifecycle Management should deploy your services.
    • Press ADD, and your Kubernetes cluster will be added.

  • Your Kubernetes cluster will be shown in the Resources overview.

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