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Chapter 10. Conﬁguring the LVS Routers with Piranha Conﬁguration Tool 131

Figure 10-9. The EDIT MONITORING SCRIPTS Subsection

Sending Program

For more advanced service veriﬁcation, you can use this ﬁeld to specify the path

to a service-checking script. This functionality is especially helpful for services that

require dynamically changing data, such as HTTPS or SSL.

To use this functionality, you must write a script that returns a textual response, set it

to be executable, and type the path to it in the Sending Program ﬁeld.

Tip

To ensure that each server in the real server pool is checked, use the special token

%h after the path to the script in the Sending Program ﬁeld. This token is replaced

with each real server’s IP address as the script is called by the nanny daemon.

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Red Hat CLUSTER SUITE 4.7 DM MULTIPATH Guía de instalación Pagina 147