Monitoring the TrueSight Presentation Server high availability status

The TrueSight Presentation Server in High availability (HA) mode consists of two servers with identical configurations. The first server is the primary server, and the second server is the standby server.

When using TrueSight Presentation Server in HA mode, it is important to confirm that the Primary server is in an active state and the secondary server is in a passive state in case a failover operation is required, due to a planned maintenance or an unplanned outage of the Primary Server that is in an active state.


Note

For further information about the TrueSight Presentation Server in HA mode, see TrueSight Presentation Server high availability deployment

Related topics

Using

Monitor types and attributes

Relevant attributes

The following attributes help you determine the preparedness for failover of the monitored TrueSight Presentation Server in HA mode.

Attribute

Description

This attribute reports the configured TrueSight Presentation Server's HA status.

Any of the following server status conditions can cause this attribute's metric to be in a RED\CRITICAL or ALARM state.

Primary server status

Secondary server status

Active

Active

Active

Down

Passive

Active

Passive

Passive

Passive

Down

Down

Active

Down

Passive

Down

Down

This attribute uses the following metric values:

Metric value

Description

0–0

The HA status is good.

The primary server is in an active state and the secondary is in a passive state.

1–1

The HA status is not good.

The primary and secondary server is in one of the status conditions listed in the server status condition table.

This attribute reports the HA node (server) status of the configured TrueSight Presentation Server’s primary and secondary nodes.

This attribute uses the following metric values:

Metric value

Description

0

The primary or secondary node is in active state.

1

The primary or secondary node is in passive state.

2

The primary or secondary node is down.

There could be issues with HA status and a failover cannot occur if:

  • The secondary node value is 0 (primary and secondary nodes are active)
  • The primary node value is 1 (primary node is in passive state)
  • The metric value is 2 (primary or secondary node is down)

Suggested action

Use the relevant CLI commands to restart the primary server and make sure it is the active server.


 

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