temporary down page

Hi,

 

 

There are a few options for gracefully handling load balancing failures:

 

 

- You can configure a fallback host on the HTTP profile. LTM will send a 302 redirect to the client when a single request fails or when the pool is down. See SOL6510 (Click here) for details.

 

 

- You can configure additional servers at a lower priority to serve 'sorry page' content when the primary pool members are down. Try searching for 'priority group activation' on AskF5.com for details.

 

 

- You can use an iRule to send a redirect or HTML when the pool is down. Search the iRule Codeshare (Click here) for "maintenance" to see a few different examples.

 

 

Aaron

we are doing network upgrades this weekend.. and our sites will be down, so we just wanted the f5s to display a "under construction page"

If you want to respond to all requests to a VIP with a static HTML message, you can use HTTP::respond in an iRule and just add the rule when the maintenance starts and remove it afterwards.

 
 when HTTP_REQUEST { 
  
     Send 200 response with some HTML and headers to prevent caching 
    HTTP::respond 200 content { 
       Site maintenance 
       Site down for maintenance
 
        
        
        
       } 
       Cache-Control: no-cache 
       Pragma: no-cache 
       Connection: close 
 } 
 

Aaron

It's more than you are asking for in this case, but I just wanted to mention a new addition to the maintenance contributions on the code share. I haven't fleshed out the details in the wiki page yet (my wiki skills need some serious help), but Kirk Bauer wrote a perl script to grab your (understood, not you specifically) working sorry page and generate the iRules/classes necessary to replace that functionally on the LTM. If you run the script locally on the LTM, it'll even deploy for you. Cool stuff. :-)

 

http://devcentral.f5.com/wiki/default.aspx/iRules/LTMMaintenancePageGenerator.html Click here