Fortinet FortiGate FortiGate-3000 Administration Manual page 103

System config
FortiGate-3000 Administration Guide
To monitor cluster units for failover
If the primary unit in the cluster fails, the units in the cluster renegotiate to select a new
primary unit. Failure of the primary unit results in the following:
• If SNMP is enabled, the new primary FortiGate unit sends the trap message "HA
switch". This trap indicates that the primary unit in an HA cluster has failed and has
been replaced with a new primary unit.
• The cluster contains fewer FortiGate units. The failed primary unit no longer
appears on the Cluster Members list.
• The host name and serial number of the primary cluster unit changes.
• The new primary unit logs the following messages to the event log:
HA slave became master
Detected HA member dead
If a subordinate unit fails, the cluster continues to function normally. Failure of a
subordinate unit results in the following:
• The cluster contains fewer FortiGate units. The failed unit no longer appears on the
Cluster Members list.
• The master unit logs the following message to the event log:
Detected HA member dead
To manage individual cluster units
This procedure describes how to log into the primary unit CLI and from there to
connect to the CLI of subordinate cluster units. You log into the subordinate unit using
the ha_admin administrator account. This built-in administrator account gives you
read and write permission on the subordinate unit.
1 Use SSH to connect to the cluster and log into the CLI.
Connect to any cluster interface configured for SSH administrative access to log into
the cluster.
You can also use a direct cable connection to log into the primary unit CLI. To do this
you must know which unit is the primary unit.
2 Enter the following command followed by a space and type a question mark (?):
execute ha manage
The CLI displays a list of all the subordinate units in the cluster. Each cluster unit is
numbered, starting at 1. The information displayed for each cluster unit includes the
unit serial number and the host name of the unit.
3 Complete the command with the number of the subordinate unit to log into. For
example, to log into subordinate unit 1, enter the following command:
execute ha manage 1
Press Enter to connect to and log into the CLI of the selected subordinate unit. If this
subordinate unit has a different host name, the CLI prompt changes to this host name.
You can use CLI commands to manage this subordinate unit.
4 Enter the following command to return to the primary unit CLI:
exit
You can use the execute ha manage command to log into the CLI of any of the
other subordinate units in the cluster.
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