PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.1 (for Linux)

3.6.9 Setting User command execution function

In NIC switching mode, a command pre-defined by a user can be executed at specific timing. For information on execution timing, see "2.2.10 User command execution function". In NIC switching mode, this function can be used to flush an ARP table, change the interface status, and change the MTU length, etc. The following settings must be made to execute a user command. See the sample files for information on creating a script file appropriate for a user's environment.

Sample file for NIC switching mode

- /etc/opt/FJSVhanet/script/interface/sha. interface.sam (When activating or deactivating an IP address)
- /etc/opt/FJSVhanet/script/failover/sha.failover.sam (When detected an error in a transfer route)
- /etc/opt/FJSVhanet/script/patrol/sha.patrol.sam (When detected a standby patrol error or recovery)

[Setup files]

The storage destination and file name of a setup file varies depending on the type and name of a virtual interface.

Setup file for NIC switching mode

- /etc/opt/FJSVhanet/script/interface/shaX (When activating or deactivating an IP address)
- /etc/opt/FJSVhanet/script/failover/shaX (When detected an error in a transfer route)
- /etc/opt/FJSVhanet/script/patrol/shaX (When detected a standby patrol error or recovery)

* shaX is the created virtual interface name for NIC switching mode.

• Do not call the operational command for redundancy line control function in the script file.
• The commands executed in the script file does not output message to the standard output. When checking for the contents of the outputted message, set the redirect path /dev/console/ and output the message to the console display. For detail, refer to the sample script file.
• In a clustered system, the script for NIC switching mode of activating or deactivating IP addresses is executed only by active node. It will not run for standby node.
• Create a script file for each virtual interface. If both of IPv4 address and IPv6 address is set to a single virtual interface (or dual stack configuration), define the script file for each address family.

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3.6.9.1 Settings for NIC switching mode