vCenter unreachable - VCHA active node isolated

Posted on October 9, 2019

I recently had to deal with a situation were our vCenter server was unreachable. This vCenter runs vCenter HA (VCHA) and each node runs on a different ESXi host in a 3 hosts cluster thanks to an anti-affinity DRS rule. The management IP would not reply to ping. I... [Read More]

Change location of ESXi coredump file

Posted on September 23, 2019

A core dump, also referred to as crash dump or memory dump, contains the content of the memory at a given point in time. It is usually created when the system or program crashes. It is a way of saving evidence that could help troubleshoot the root cause of the... [Read More]

Change SRM placeholder datastore

Posted on July 25, 2019

For every virtual machine in a protection group, Site Recovery Manager creates a placeholder virtual machine at the recovery site. You must identify a datastore on the recovery site in which Site Recovery Manager can store the placeholder virtual machines. It only reserves a place for protected virtual machines in... [Read More]

Get Lun information in PowerCLI

Posted on June 28, 2019

I recently needed to check the path selection policy on a large number of Luns on a large number of hosts. The idea of doing it in the web client was worse than the 35 degrees outside so I decided to script it. I started with the Get-ScsiLun cmdlet but... [Read More]

ERROR certificate-manager 'lstool get' failed: 1

Posted on April 2, 2019

The other day I had to replace the machine SSL certificate on a vCenter Server Appliance 6.5. Since vCenter 6.0 the process of replacing a certificate has been greatly simplified, the certificate-manager script basically takes care of everything which is really nice. However, this time I encountered an error when... [Read More]

Conflict between EMC Networker client and vCenter Server (Windows)

Posted on March 8, 2019

I encountered a really strange issue with a customer on a Windows based vCenter server. (I know Windows will be deprecated soon but this is another discussion and it is still supported as of now). I am going to simplify what happened and consolidate the useful bits. <img src="/img/emc-networker-vcenter.png" alt=""... [Read More]