201 · Question #10
When configuring a Virtual Server to use an iRule with an HTTP_REQUEST event, which lists required steps in a proper order to create all necessary objects.
The correct answer is B. create the Virtual Server, create required pools, create the iRule, edit the Virtual Server. To correctly configure a Virtual Server with an iRule, one must first create the Virtual Server, then the necessary pools and iRule, and finally associate them by editing the Virtual Server.
Question
When configuring a Virtual Server to use an iRule with an HTTP_REQUEST event, which lists required steps in a proper order to create all necessary objects.
Options
- Acreate profiles, create the iRule, create required pools, create the Virtual Server
- Bcreate the Virtual Server, create required pools, create the iRule, edit the Virtual Server
- Ccreate a custom HTTP profile, create required pools, create the Virtual Server, create the iRule
- Dcreate required pools, create a custom HTTP profile, create the iRule, create the Virtual Server
How the community answered
(21 responses)- B86% (18)
- C5% (1)
- D10% (2)
Why each option
To correctly configure a Virtual Server with an iRule, one must first create the Virtual Server, then the necessary pools and iRule, and finally associate them by editing the Virtual Server.
While profiles are important, the most logical initial step for a Virtual Server is often its creation, followed by its dependencies, and then associating them.
The standard workflow involves creating the Virtual Server initially, then defining its backend pools and the iRule logic. After these components are ready, the Virtual Server is edited to attach the specific iRule and associate it with the configured pools, allowing it to process HTTP requests as intended.
Creating the iRule after the Virtual Server, but before editing the Virtual Server to apply it, means the iRule isn't yet active; the list should reflect the complete association.
Creating pools and profiles before the Virtual Server is acceptable, but the crucial final step of applying the iRule to the Virtual Server is missing or poorly placed.
Concept tested: BIG-IP Virtual Server iRule configuration order
Source: https://support.f5.com/csp/article/K04434254
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