Adding a new node to the virtualization platform fails with a qemu version mismatch error

Cause

The platform was upgraded from an older version.

Solution

1. SSH into the Management Node.

2. Run the following command to start a zstack-cli session:

   [root@localhost ~]# zstack-cli

3. Run the following command to log in to zstack-cli:

   admin >>> LogInByAccount accountName=admin password=$password  //Use the platform admin password

4. Run the following command to upgrade the qemu version for the Cluster:

   admin >>> UpdateClusterOS uuid=$cluster_uuid updatepackage=qemu-kvm-ev

5. Reconnect all hosts in the Cluster.