vRealize Operations Manager includes a central page where you can monitor and manage the nodes in your vRealize Operations Manager cluster and the adapters that are installed on the nodes.

How Cluster Management Works

You can view and change the online or offline state of the overall vRealize Operations Manager cluster or the individual nodes. In addition, you can enable or disable high availability (HA) and view statistics related to the adapters that are installed on the nodes.

Where You Find Cluster Management

Log in to the vRealize Operations Manager administration interface at https://master-node-name-or-ip-address/admin.

Cluster Management Options

The options include cluster-level monitoring and management features.

Table 1. Initial Setup Status Details

Option

Description

Cluster Status

Displays the online, offline, or unknown state of the vRealize Operations Manager cluster and provides an option to take the cluster online or offline.

If a cluster fails to go offline, click the Force Take Offline button to take the cluster offline.

Note:

The Force Take Offline button appears only when the Bring Cluster offline operation fails.

You can select to display the reason for taking the cluster offline. Select the Show reason on maintenance page check box in the Take Cluster Offline dialog box. When you log in to vRealize Operations Manager when the cluster is offline, the reason for taking the cluster offline is displayed.

High Availability

Indicates whether HA is enabled, disabled, or degraded and provides an option to change that setting.

vRealize Operations Manager provides node-level information as well as a toolbar for taking nodes online or offline.

Table 2. Nodes in the vRealize Operations Manager Cluster

Option

Description

Generate Passphrase

Generate a passphrase that can be used instead of the administrator credentials to add a node to this cluster.

Take Node Online/Offline

You can select the required node and bring it online or offline. You are required to understand the risk involved and provide a valid reason for the action performed when you bring a node online or offline.

Reload Nodes

You can fetch data from the nodes.

Shrink Cluster

This option provides a mechanism to remove a node without having to lose any data. The shrink cluster removes nodes by migrating data from one node to any other node.

All the historical data is either moved to the master node or any other node, which has sufficient disk space.

If HA is enabled and you have selected the replica node for removal, then you are asked to select another replica node. vRealize Operations Manager provides a list of nodes that be a possible candidate to become a replica node.

vRealize Operations Manager stops collecting data from the removed nodes. However, the data that is available in the removed node is migrated to an existing node. Once the migration is complete, then the removed nodes are deleted with the cluster state as offline.

For remote collectors, if any adapters are on the collectors of the removed nodes, then such nodes are migrated as well.

Note:

vRealize Operations Manager cannot move pinned adapters. The adapter instances which were pinned on removed nodes do not move to another collector automatically. You must change the collector before starting the shrink cluster process.

Table 3. Nodes in the vRealize Operations Manager Cluster

Option

Description

Node Name

Machine name of the node.

The node that you are logged into displays a dot next to the name.

Node Address

Internet protocol (IP) address of the node. Master and replica nodes require static IP addresses. Data nodes may use DHCP or static IP.

Cluster Role

Type of vRealize Operations Manager node: master, data, replica, or remote collector.

State

Powered on, powered off, unknown, or other condition of the node.

Status

Online, offline, unknown, or other condition of the node.

Objects

Total environment objects that the node currently monitors.

Metrics

Total metrics that the node has collected since being added to the cluster.

Build

vRealize Operations Manager software build number installed on the node.

Version

vRealize Operations Manager software version installed on the node.

Deployment Type

Type of machine on which the node is running: vApp

SSH Status

Enable or disable the SSH Status.

In addition, there are adapter statistics for the selected node.

Table 4. Adapters on Server

Option

Description

Name

Name that the installing user gave to the adapter.

Status

Indication of whether the adapter is collecting data or not.

Objects

Total environment objects that the adapter currently monitors.

Metrics

Total metrics that the adapter has collected since being installed on the node.

Last Collection Time

Date and time of the most recent data collection by the adapter.

Added On

Date and time when the adapter was installed on the node.