Deckhouse Virtualization Platform for bare metal

At this point, you have created a cluster that consists of a single master node. Only a limited set of system components run on the master node by default. You have to add at least one worker node to the cluster for the cluster to work properly.

Add a new node to the cluster (for more information about adding a static node to a cluster, read the documentation):

  • Prepare a server that will be a worker node of the cluster.

  • Create a NodeGroup worker. To do this, run the following command on the master node:

    sudo d8 k create -f - << EOF
    apiVersion: deckhouse.io/v1
    kind: NodeGroup
    metadata:
      name: worker
    spec:
      nodeType: Static
      staticInstances:
        count: 1
        labelSelector:
          matchLabels:
            role: worker
    EOF
    
  • Generate an SSH key with an empty passphrase. To do this, run the following command on the master node:

    ssh-keygen -t rsa -f /dev/shm/caps-id -C "" -N ""
    
  • Create an SSHCredentials resource in the cluster. To do this, run the following command on the master node:

    sudo -i d8 k create -f - <<EOF
    apiVersion: deckhouse.io/v1alpha1
    kind: SSHCredentials
    metadata:
      name: caps
    spec:
      user: caps
      privateSSHKey: "`cat /dev/shm/caps-id | base64 -w0`"
    EOF
    
  • Print the public part of the previously generated SSH key (you will need it in the next step). To do so, run the following command on the master node:

    cat /dev/shm/caps-id.pub
    
  • Create the caps user on the virtual machine you have started. To do so, run the following command, specifying the public part of the SSH key obtained in the previous step:

    export KEY='<SSH-PUBLIC-KEY>' # Укажите публичную часть SSH-ключа пользователя.
    useradd -m -s /bin/bash caps
    usermod -aG sudo caps
    echo 'caps ALL=(ALL) NOPASSWD: ALL' | sudo EDITOR='tee -a' visudo
    mkdir /home/caps/.ssh
    echo $KEY >> /home/caps/.ssh/authorized_keys
    chown -R caps:caps /home/caps
    chmod 700 /home/caps/.ssh
    chmod 600 /home/caps/.ssh/authorized_keys
    
  • Create a StaticInstance for the node to be added. To do so, run the following command on the master node (specify IP address of the node):

    export NODE=<NODE-IP-ADDRESS> # Specify the IP address of the node you want to connect to the cluster.
    sudo -i d8 k create -f - <<EOF
    apiVersion: deckhouse.io/v1alpha1
    kind: StaticInstance
    metadata:
      name: dvp-worker
      labels:
        role: worker
    spec:
      address: "$NODE"
      credentialsRef:
        kind: SSHCredentials
        name: caps
    EOF
    
  • Ensure that all nodes in the cluster are Ready. On the master node, run the following command to get nodes list:

    sudo kubectl get no