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Sev_111299's avatar
Sev_111299
Icon for Nimbostratus rankNimbostratus
May 02, 2012

Flipping Clusters for a Virtual Server

I'm new to F5 and would like to understand what is the best method to achieve the following:

 

 

- A virtual Server xyz.xyz.com (1.1.1.1) has a pool of 4 members of which 2 should be active at one time. How can I automate the switch-over or the flipping of the active/inactive members?

 

 

 

Manually, I can go to Local Traffic ›› Pools : Pool List ›› and under the members tab I can enable or disable specific members. But doing this to 20-40 different pools will be a pain. Therefore I'm hoping I can automate this process.

 

 

 

With our current "old" Cisco CSS 11501, we run a script command with the CSS which enables the suspended pair and disables the currently active pair of IPs with no service interruptions.

 

 

 

Can anyone help me out?

 

 

 

Regards,

 

Sev

 

dev
devops
iControl
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    May 02, 2012
    Hi Sev,

    You've included the hostname of your BIG-IP in the quote "Local Traffic ›› Pools : Pool List ››". You might want to edit your post to change that to text instead of a URL.

    You can create two separate pools of servers and then use the active_members command to select a pool: 

    
when CLIENT_ACCEPTED {
if {[active_members primary_pool]}{
 Use the primary pool
pool primary_pool
} elseif {[active_members secondary_pool]}{
pool secondary_pool
} else {
 Take some default action?
}
}

    Aaron