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Make sure that the KVM is already installed on the host and configured with networking. Networking should be common across all the nodes inside a single zone.
Steps to add multiple KVM hosts in the existing cluster.
Note: For a more secured way, a host can also be added using CloudStack’s SSH key without having to provide a host password. Before adding the host in CloudStack do the following.
Copy the SSH public key from /var/lib/cloudstack/management/.ssh/id_rsa.pub on the management server. Add the copied key to the /root/.ssh/authorized_keys file on the KVM host’s.
Figure 19. Adding a host
4. Repeat for additional hosts. Once done, verify that the hosts are added by navigating to the Host section as shown in the following figure:
Figure 20. KVM host list