2V0-622D · Question #160
What two services run on all nodes in a vCenter Server HA cluster? (Choose two.)
The correct answer is A. vmware-vmon D. vmware-vcha. In a vCenter Server HA cluster, two services run on all three nodes (active, passive, and witness): the service control agent and the HA agent itself.
Question
What two services run on all nodes in a vCenter Server HA cluster? (Choose two.)
Options
- Avmware-vmon
- Bvmware-vpostgres
- Cvmare-rbd-watchdog
- Dvmware-vcha
How the community answered
(25 responses)- A92% (23)
- B4% (1)
- C4% (1)
Why each option
In a vCenter Server HA cluster, two services run on all three nodes (active, passive, and witness): the service control agent and the HA agent itself.
vmware-vmon (VMware Service Control Agent) is responsible for starting, stopping, and monitoring all other vCenter services and must run on every node in the VCHA cluster to ensure consistent service management. It is a foundational process present on active, passive, and witness nodes.
vmware-vpostgres (the embedded PostgreSQL database) only runs on the active and passive nodes - not on the witness node, which has no need to maintain a copy of the database.
vmware-rbd-watchdog is the replication block device watchdog that monitors database replication and runs only on the active and passive nodes, not the witness.
vmware-vcha is the vCenter High Availability agent that handles replication, failover coordination, and health monitoring between nodes, and by definition must run on all three nodes (active, passive, witness) to maintain cluster state.
Concept tested: vCenter Server HA cluster node services
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-4A626993-A951-4943-8B38-D2A03B862E6F.html
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