Remove/Reset Cluster Node

danger

This is an advanced operation. Please make sure to have a Forward Support Engineer on a call when performing this operation to avoid mistakes that could cause data loss.

info

• Remove node migrates the services running on a specific node to a different node and deletes the node from the cluster. It can only be used in multi-node deployments.
• Reset wipes out all the cluster orchestration and application data on a node and makes the node ready for a fresh install.

Remove a node in multi-node deployments

• SSH into a primary node.

• Run the fwd-cluster utility and use the list command to identify the list of existing nodes in the cluster as shown below.

  fwd-cluster
  Forward Cluster> list

  

• Now, run the remove command to remove the node as shown below. Note that, if the node has any database pods running, they will be migrated to a different node before removing the node from the cluster.

  Forward Cluster> remove <NodeName>

  

Reset a node

danger

Make sure that the node is removed from the cluster before resetting it.

• Login to the node and execute the below command to reset.

  ./reset_node_for_re_install.sh

  

• Reboot the node using the below command.

  sudo reboot