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:

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  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
  

  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:

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  ssh-keygen -t rsa -f /dev/shm/caps-id -C "" -N ""
  

  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:

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  sudo -i d8 k -f - <<EOF
  apiVersion: deckhouse.io/v1alpha1
  kind: SSHCredentials
  metadata:
    name: caps
  spec:
    user: caps
    privateSSHKey: "`cat /dev/shm/caps-id | base64 -w0`"
  EOF
  

  sudo -i d8 k -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:

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  cat /dev/shm/caps-id.pub
  

  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:

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  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
  

  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):

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  export NODE=<NODE-IP-ADDRESS> # Specify the IP address of the node you want to connect to the cluster.
  sudo -i d8 k -f - <<EOF
  apiVersion: deckhouse.io/v1alpha1
  kind: StaticInstance
  metadata:
    name: dvp-worker
    labels:
      role: worker
  spec:
    address: "$NODE"
    credentialsRef:
      kind: SSHCredentials
      name: caps
  EOF
  

  export NODE=<NODE-IP-ADDRESS> # Specify the IP address of the node you want to connect to the cluster. sudo -i d8 k -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:

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  sudo kubectl get no
  

  sudo kubectl get no