sys cluster¶

sys cluster(1) BIG-IP TMSH Manual sys cluster(1)

NAME
cluster - Configures a cluster in a VIPRION(r) system.

MODULE
sys

SYNTAX
Configure the cluster component within the sys module using the syntax in the following sections.

MODIFY
modify cluster [name]
options:
address [IP address/Netmask | none]
alt-address [IP address/Netmask | none]
members {
[1 | 2 | 3 | 4 | 5 | 6 | 7 | 8] {
options:
address [IP address | none]
alt-address [IP address | none ]
[disabled | enabled]
priming [disabled | enabled]
}
}
min-up-members [integer]
min-up-members-enabled [no | yes]

edit cluster default
options:
all-properties
non-default-properties

DISPLAY
list cluster
options:
all-properties
non-default-properties
one-line

show running-config cluster
show running-config cluster [option name]
options:
one-line

show cluster
show cluster [option name]
options:
all-properties
field-fmt

DESCRIPTION
You can use the cluster component to modify the configuration of the primary blade in a cluster. When you do
this, the system automatically propagates the changes to the other blades in the cluster. This is known as
cluster synchronization.

EXAMPLES
modify cluster default address 192.168.217.44/24

Sets the floating management IP address for the cluster default to an IP address of 192.168.217.44.

list cluster my_cluster

Displays the properties of the cluster named my_cluster.

OPTIONS
address

Specifies an IP address for the cluster or cluster member. The default value is none.

alt-address Specifies an optional, additional IP address for the cluster or cluster member in support of
dual-stack addressing. The default value is none. Note: The IP address specified must compliment the
family of the IP address held in address. I.e. Without loss of generality, if address holds an IPv6
address, then alt-address must hold an IPv4 address or none at all. Symmetrically, if address holds an
IPv4 address, then alt-address must hold an IPv6 address or none at all.

disabled

Disables the specified cluster member. The default value is enabled.

enabled

Enables the specified cluster member. This is the default value.

members

Specifies the cluster members to be acted on by the command. A cluster member is a slot into which you
insert a blade. The cluster member is identified by the number assigned to the slot.

min-up-members

Specifies the minimum number of cluster members that must be up for the cluster to remain Active. The
default value is 0.

min-up-members-enabled

When set to yes, specifies that when the number of cluster members that are active is below the value of
the option min-upmembers, the cluster fails over to its peer. The default value is no.

Enable this parameter when you configure a redundant pair.

Important: Make sure that you modify the value of the min-up-members option appropriately when you take
blades down in a cluster. Otherwise, you can get into the condition where disabling a cluster member
brings the cluster below the value of the option min-up-members, which can cause the cluster to fail over
to its peer.

name

Specifies a name for the cluster. This option defaults to the value default.

priming

Prevents a cluster member from proceeding to the RUNNING cluster quorum state, which is useful when a
blade is in a reboot loop. The default value is disabled.