Citrix Systems 4.2 Recovering a Lost Virtual Router, Maintenance mode not working on vCenter

Chapter 22. Troubleshooting

Cause

It is possible that a client from outside the intended pool has mounted the storage. When this occurs, the LVM is wiped and all data in the volume is lost

Solution

When setting up LUN exports, restrict the range of IP addresses that are allowed access by specifying a subnet mask. For example:

echo “/export 192.168.1.0/24(rw,async,no_root_squash)” > /etc/exports

Adjust the above command to suit your deployment needs.

More Information

See the export procedure in the "Secondary Storage" section of the CloudPlatform Installation Guide

22.5. Recovering a Lost Virtual Router

Symptom

A virtual router is running, but the host is disconnected. A virtual router no longer functions as expected.

Cause

The Virtual router is lost or down.

Solution

If you are sure that a virtual router is down forever, or no longer functions as expected, destroy it. You must create one afresh while keeping the backup router up and running (it is assumed this is in a redundant router setup):

•Force stop the router. Use the stopRouter API with forced=true parameter to do so.

•Before you continue with destroying this router, ensure that the backup router is running. Otherwise the network connection will be lost.

•Destroy the router by using the destroyRouter API.

Recreate the missing router by using the restartNetwork API with cleanup=false parameter. For more information about redundant router setup, see Creating a New Network Offering.

For more information about the API syntax, see the API Reference.

22.6. Maintenance mode not working on vCenter

Symptom

Host was placed in maintenance mode, but still appears live in vCenter.

256