Priority Group Activation, why use it?
If you have 3 members that are active within a pool and you select round robin LB method and set the priority group activation for less than 2, the virtual server is only going to use two of three nodes to round robin, why on earth would you configure this? this is an example in the f5 university. Wouldn't the goal be to use all active nodes within the pool and not limit it to use two of the three?Application Web Pages Not Being Served Correctly by F5
Hi, One of our customers has an application that doesn't appear to perform very well when load-balanced by the F5. The application is currently using a Standard VS profile, which is not doing SSL offload, uses cookie persistence and a SNAT pool with a single IP address and pretty much everything else is default. We have recently applied a Web Acceleration profile to the VS to attempt to address the problem but it doesn't appear to have solved anything. The WA profile is only set to cache and serve up static CSS and JS files. The major issue, we believe, is that the client fails to receive some of the Javascript that is necessary for the page to render correctly. This was the case prior to the WA profile being applied as well as after. The application used to be load-balanced, in a very rudimentary way, by iptables and these issues were not seen then. I'm very keen to find any clue as to where to look on the F5 for what could be causing the problem. I'm considering changing the profile to Perf L4 to see if it helps but there are two problems with that: 1. I don't get to learn what was causing the problem 2. I think the client wants to have the F5 do SSL offload in the near future Any help would be greatly appreciated. Thanks in advance, Ben
Pool members with fully-qualified domain names (FQDNs): How does this work?
From release notes of v11.6.0 (on new features): Populate pools by FQDN This release includes the ability to configure a BIG-IP system with nodes and pool members that are identified with fully-qualified domain names (FQDNs). When configuring pool members with FQDN, addresses dynamically follow DNS changes. Fully dynamic DNS-managed pools may even be created. How does this work? When the fqdn resolves to multiple addresses, how is LB handled?
APM logon page redirect loop
When i connect to my vserver using APM, i recieve the below message. Your session could not be established. BIG-IP can not find session information in the request. This can happen because your browser restarted after an add-on was installed. If this occurred, click the link below to continue. This can also happen because cookies are disabled in your browser. If so, enable cookies in your browser and start a new session. Thank you for using BIG-IP. To open a new session, please click here. clicking 'here' just redirect loops back to this page over and over. I've cleared the sessions and even rebooted the bigip, and i get the same thing. any ideas? thanks,