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vSAN Health Checker Error – Failed State for iSCSI Target Service (Resolved)

A few weeks ago, I wrote about using iSCSI as a backup repository target. While still running this POC in my environment, I came across an error in the vSAN Health Checker stating that the vSAN iSCSI target service was in a failed state. Drilling down into the vSAN Health check tree, I could see a Service Runtime status of stopped as shown below against the host. This host had recently been marked as unreachable in vCenter and required a Management Agent reset to bring it back online.

There is a chance that the process stopped the iSCSI Target service but did not start it. In any case, there is an easy way to see the status of the services and then get them back online. Once that’s been done, a re-run of the vSAN Health checker will show that the issue has been resolved, and the iSCSI Target Service on the host is now running.

To troubleshoot this error, you can follow these steps:

1. Open the vSphere Client and navigate to your vCenter Server instance.

2. Click on the “Health” tab in the top menu bar.

3. In the left-hand menu, click on “vSAN Health Checker”.

4. In the main window, click on the “Services” tab.

5. Locate the iSCSI Target Service and check its status. If it’s stopped or failed, you’ll need to take action to get it running again.

6. To start the service, right-click on the host that has the failed iSCSI Target Service and select “Restart Management Agent”. This will restart the Management Agent and potentially start the iSCSI Target Service if it was stopped due to the agent reset.

7. Once the Management Agent has been restarted, run the vSAN Health Checker again to see if the issue has been resolved.

If the iSCSI Target Service is still in a failed state after restarting the Management Agent, you may need to perform additional troubleshooting steps to determine the root cause of the issue. VMware KB article 2147603 provides more information on troubleshooting vSAN issues with iSCSI targets.

In summary, if you encounter an error in the vSAN Health Checker stating that the vSAN iSCSI target service is in a failed state, there are several steps you can take to resolve the issue. By following these steps, you should be able to identify and correct any issues with the iSCSI Target Service and get it running again.

References:

* VMware KB article 2147603 (Troubleshooting vSAN issues with iSCSI targets)

Note: The information provided in this blog post is based on my personal experience and should not be taken as an official support document from VMware. Always consult the official VMware documentation for the most up-to-date and accurate information.