VMWARE-VCHA-MIB: View SNMP OID List / Download MIB

This informative notification is sent from the Active node when it notices a peer node rejoin the cluster. It is sent only once.

This warning notification is sent from the Active node when it notices a peer node has left the cluster. This is sent only once. Operator should check the liveness and connectivity of the departed node and try to bring it back by either rebooting the appliance or resolving the network problem.

This warning notification is sent when a node is network isolated from the cluster. This notification can only be sent from the isolated node, not by other nodes in the cluster. After being isolated, the node will reboot itself trigging coldStart notification. In case of Active node failure, the cluster will trigger a reelection and every slave node will be declared as isolated temporarily before the cluster re-election completes.

This notification is sent only once from the Active node when vCenter HA cluster state changes to either healthy, degraded or isolated. Please see VmwVchaClusterStateType for detailed description of each state. And administrator should receive another notification describing the state change of cluster subsystem (cluster membership, DB replication or file replication) which is trigger of cluster state change.

This notification is sent only once from the Active node when vCenter HA cluster mode changes to either enabled, maintenance or disabled.

This informative notification is sent only once when the public IP address is brought up on the Active node. At this time, the Active node is reachable from the client and will be able to serve client requests when services are up and running.

This informative notification is sent only once when the public network interface is brought down on the Active node. This can happen when InitiateFailover is invoked on the Active node or vcha process gracefully shuts down resulting in a reboot of the appliance (triggered by network isolation). During this time, clients cannot connect to vCenter Server and users will experience downtime until the public network interface is brought up. In either case, users should not expect more than five minutes of downtime. If VCHA cluster is still not connectable, the operator should verify the reachability of each node through the cluster network.

This informative notification is sent only once when a failover is triggered from the Active node to Passive node. Passive node should take over the Active role if the cluster is in healthy state.

This informative notification is sent only once when the Passive node takes over the Active role and brings up the public network interface.

This warning notification is sent only once when the Active node fails to initiate a failover because the cluster is in disabled mode.

This warning notification is sent only once when the Active node fails to initiate a failover because the cluster does not have all three nodes connected.

This warning notification is sent only once when the Active node fails to initiate a failover because vPostgres service on the Passive node is not ready to take over.

This informative notification is sent only once when the last Active node continue as the Active node to servce client's request. This can happen in many scenarios: 1. After triggering a planned failover, DB or file replicator failed to flush data to the Passive node and failover didn't proceed because of data loss. 2. After triggering a planned or forced failover, Passive node failed to pick up the Active role for reasons like: auto failover cannot happen in maintenance mode or cluster is in disabled mode.

This informative notification is sent only once from the Active node when database replication state changes to sync, async or no replication. Database replication is not healthy when it is in async or no replication state. Reasons include large network delays or vPostgres service becoming unresponsive on the Passive node.

This informative notification is sent only once from the Active node when file replication state changes to in-sync or out-of-sync. File replication state is out-of-sync when VCHA fails to set a watch on a file at the Active node or fails to replicate a file from the Active node to Passive. Administrators should check the corresponding KB article for recovery action.

This MIB module describes the vCenter High Availability Service (VCHA). A VCHA cluster consists of three VMs identified by a single instance UUID. One is the Active vCenter VM that serves client requests. Second is the Passive VM that is identical to the Active vCenter VM in terms of database and filesystem state. Passive VM constantly receives updates from Active VM and takes over the role of Active vCenter VM in the event of a failover. Third is the Witness VM that acts as a quorum VM in a VCHA cluster. The sole purpose of Witness VM is to avoid classic split-brain problem in a VCHA cluster. client + | | +----------------v---+ +--------------------+ | Public IP | | | | | | | Active vCenter | | Passive vCenter | | | | | +---Private-IP+------+ +------+Private-IP---+ ^ <--------------------------> ^ | DB & File replication | + + + + + + +------> <----------+ +----Private-IP----+ | | | Witness vCenter | | (Quorum) | | | +------------------+ All events will not be repeated for the duration of a given state entered. It is highly recommended that the administrator links the SNMP trap receiver to both public network and vCenter HA cluster network, so that the monitoring system is able to get notified as long as one of the networks is up.

The compliance statement for entities which implement VMWARE-VCHA-MIB.

These objects provide notification details.

Group of objects describing notifications (traps).

A string that uniquely identify the vCenter HA cluster. This is the same as instance UUID of the active vCenter Server.

The type of cluster network interface: ipv4 or ipv6.

The type of public network interface: ipv4 or ipv6.

This is the IP address of each node in cluster network that is used to communicate with other nodes in the cluster and transfer data between the Active node and the Passive node.

The IP address of a node in public network that serves client's request.

Represents the role of node being affected by the given event. See MIB module general description for detailed expalanation for each role.

vCenter HA cluster states: healthy, degraded or isolated.

vCenter HA cluster modes: enabled, maintenance or disabled.

For planned failover, the Active node flushes all the state to the Passive node, waits for the flush to complete before causing a failover. After the failover, the Passive node starts without any data loss. For unplanned failover, the failover is initiated immediately and may result in data loss.

Database replication states: sync, async or no replication.

This variable represents the file replication provider state. When it is false, the service configuration and state files are out of sync between the Passive and Active nodes. This could result from file replication failures.

File replication providers: service-config or service-state.