Numerous unhealthy alerts on cluster after the cluster was rebuilt
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Numerous unhealthy alerts on cluster after the cluster was rebuilt

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Article ID: 412912

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Updated On:

Products

VMware vSAN

Issue/Introduction

Multiple vSAN alerts:

vSAN cluster configuration consistency
vSAN cluster partition
Performance service status






This is seen after the cluster was taken down due to an incorrect build then rebuilt. 


Environment

ESXi (All) 

Cause

Multiple hosts have no unicast list when checking using the below command  and will  return no output or be missing hosts in the output 

esxcli vsan cluster unicastagent list



In addition multiple hosts has IgnoreClusterMemberListupdates enabled when checking using the below command from the host command line it will return 1

esxcfg-advcfg -g /VSAN/IgnoreClusterMemberListupdates

 

Resolution

Disable IgnoreClusterMemberListupdates by running the following command on all hosts command line

esxcfg-advcfg -s 0 /VSAN/IgnoreClusterMemberListupdates



Rebuild the Unicast list using one of the following two methods:
1. Preforming a change on the cluster will have vCenter update the vSAN unicast list. An example would be placing a host in to maintenance mode or removing a host from the cluster. 

2. A manual rebuild can be done from the command line and is preferred if there is still production workloads running on the host, These steps can be fond at Configuring vSAN Unicast networking from the command line

Additional Information