What Can I Do If a Tunnel Network Becomes Unavailable After yum update Is Used to Upgrade the OS?

The CCE console does not support node OS upgrades. You are advised not to upgrade the OS using yum update. You are advised to upgrade the OS by resetting the node.

If you upgrade the OS on a node in a cluster using yum update and restart the node, openvswitch used by the container tunnel network becomes unavailable.

Perform the following operations to restore the container network:

1. Log in to the faulty node.
2. Run the following script as root:

   #!/bin/bash
   function upgrade_openvswitch()
   {
       cd /opt/cloud/cce/package/node-package
       openvswitch_pkg=$(ls canal-agent*.tgz | tail -n 1)
       tar -xzf $openvswitch_pkg
       cd canal-agent/package
       tar -xzf openvswitch*
       cd openvswitch
       bash can_ovs.sh update
   }
   upgrade_openvswitch