Home > Storage > PowerScale (Isilon) > Product Documentation > Cloud > APEX File Storage for AWS: Deployment Guide > Replace a cluster node
You can replace a node of an existing cluster when the node is not working. This section shows how to replace a cluster node. We will use the 5-nodes cluster expanded in section Expand a OneFS cluster as example by replacing the fifth node in the cluster.
# isi devices node smartfail --node-lnn 5
Remove the IP address of the old network interface from the cluster default network pool using:
# isi net pools modify groupnet0.subnet0.pool0 --remove-ranges <IP_address_of_the_old_interface >
Check if the IP address of the new internal network interface is present in the internal address range of the cluster using:
# isi config
>> iprange
If the address is not in the range, expand the range to include the IP address of the newly created internal network interface
>> iprange int-a <low_address>-<high_address>
>> commit
And then create an external network interface with the same process described in the section Create cluster external network interfaces.
Check if the IP address of the new external network interface is present in the IP Ranges of the default network pool using:
# isi network pool view groupnet0.subnet0.pool0
If the address is not in the IP ranges, add the IP address of the newly created external network interface using
# isi network pool modify groupnet0.subnet0.pool0 --add-ranges <IP_address_of_the_new_interface>
# isi devices node list
# isi devices node add SV200-930073-0004 –async
# isi status
Finally, wait for the FlexProtectLin job event to succeed. Use the following command to list the recent job events history in the cluster. Wait until the most recent run of FlexProtectLin job events show completion with a "Succeeded" status.
# isi job events list
You have now finished all the steps necessary to replace an existing cluster node.