show node

show node {detail}

Description

Displays the status of the nodes in the system as well as the general health of the system.

Syntax Description

detail Displays the information on a per-node basis rather than in a tabular format.

Default

N/A.

Usage Guidelines

Use this command to display the current status of the nodes and the health of the system. The information displayed shows the node configurations (such as node priority) and the system and hardware health computations. You can use this information to determine which node will be elected primary in case of a failover.

The following table lists the node statistic information collected by the switch.
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Node States

Node State Description

BACKUP

In the backup state, this node becomes the primary node if the primary fails or enters the DOWN state. The backup node also receives the checkpoint state data from the primary.

DOWN

In the down state, the node is not available to participate in leader election. The node enters this state during any user action, other than a failure, that makes the node unavailable for management. Examples of user actions are:

Upgrading the software Rebooting the system using the reboot command. Initiating an MSM/MM failover using the run msm-failover command. Synchronizing the MSM‘s/MM‘s software and configuration in non-volatile storage using the synchronize command

FAIL

In the fail state, the node has failed and needs to be restarted or repaired. The node reaches this state if the system has a hardware or software failure.

INIT

In the initial state, the node is being initialized. A node stays in this state when it is coming up and remains in this state until it has been fully initialized. Being fully initialized means that all of the hardware has been initialized correctly and there are no diagnostic faults.

MASTER

In the primary state, the node is responsible for all switch management functions.

STANDBY

In the standby state, leader election occurs—the primary and backup nodes are elected. The priority of the node is only significant in the standby state.

Example

The following command displays the status of the node, the priority of the node, and the general health of the system:

show node

The following is sample output from this command:

Node   State     Priority   SwHealth   HwHealth
-----------------------------------------------
MSM-A  MASTER           0         49          7
MSM-B  BACKUP          0 49          7

If you specify the detail option, the same information is displayed on a per node basis rather than in a tabular format, as shown in the following example:

Node MSM-A information:
Node State:    MASTER
Node Priority: 0
Sw Health:     49
Hw Health:     7
Node MSM-B information:
Node State:    BACKUP
Node Priority: 0
Sw Health:     49
Hw Health:     7

History

This command was first available in an ExtremeXOS 10.1.

Platform Availability

This command is available only on modular switches and SummitStack.