Restoring vCenter access after being blocked by a Deny All rule in NSX DFW

The issue I recently had an issue to solve with an NSX(-v) instance in which the default firewall rule had been set to reject without an exception defined for the vCenter Server. As a result, the communication between the vCenter Server appliance and NSX Manager was interrupted, which blocked vCenter Server completely from accessing the … Read moreRestoring vCenter access after being blocked by a Deny All rule in NSX DFW

Repair disconnected vCenter Server when no ephemeral portgroup is available

The problem I had the issue with a crashed vCenter Server which was configured on an non-ephemeral portgroup and was disconnected. As the vCenter Server was down, and the portgroup was a non-ephemeral one, no new ports could be allocated. In that particular case a new standard vSwitch has to be created, vCenter needs to … Read moreRepair disconnected vCenter Server when no ephemeral portgroup is available

Performance impact on VMware appliances after patching for Spectre/Meltdown

In this article I would like to share my latest experience with the Spectre/Meltdown patching and the performance impact it can have on the VMware appliances such as the vCenter Server. A customer followed exactly the VMware procedures by applying the latest patches and workarounds once published. The vCenter Server appliance had to be patched … Read morePerformance impact on VMware appliances after patching for Spectre/Meltdown

VMware vCenter Appliance 6.5 Update 1d available

This week VMware published a new product patch for the vCenter Server 6.5 which is upgrading the vCenter to version 6.5 Update 1d. What does it change? The new patch is fixing security issues and comes with a couple of bug fixes for known issues. Detailed information can be found in the VMware KB 2151314. … Read moreVMware vCenter Appliance 6.5 Update 1d available