iRule help - Routing traffic

Interesting.

The ratio might not be exact (depending on the number of incoming connections and luck) but it could work. It ain't pretty though. :) Just don't forget to add "pool" in front of staging_web.

• Have you considered using ratio load balancing method?
• Or adding the staging web member to the pool with icontrol when you deploy?
• Or do a "rolling deploy" on one prod server at a time checking for errors that way.
• Or let the developers set a cookie when accessing the site and send them to the staging pool for testing in production?

Just a few suggestions.

/Patrik

Thank you for reply. Is there a better iRule or way to route 25% of production traffic to another pool of servers?

Thank you,

Awesome! Thank you so much for the help.

Sorry, One last thing. How would the iRule look if pool_1 was production and pool_2 was staging?

Thank you,

It'd be something like this:

when HTTP_REQUEST { 
    if { rand() > 0.25 } { 
        pool pool_1
    } else { 
        pool pool_2
    }
}

Please note that unless you use connection multiplexing this rule would establish a new connection server-side every fourth request (more or less). If I were you I'd change the event to CLIENT_ACCEPTED because:

1. Then the connections would not have to be re-established saving server performance.
2. The iRule is only executed once per connection instead of once per request saving LTM performance.

Good luck!

/Patrik

Great, thank you!. I'll give it a try.

Patrick can you please review the post https://devcentral.f5.com/questions/i-rule-help-route-incoming-traffic-based-on-source-subnet-amp-url-contains-string-admin-or-intra & help me fix ...thanks!

Still the syntax issue is n't resolved ...I would request immediate help to fix the issue ...

Hello,

Sorry for the delay, got pulled in another direction. But I have a couple of questions, I ran a JMeter test with a hundred threads(100 users) connecting to VirtualServer_01 and Pool_01_80. The test ran successful, under statics for VirtualServer_01 the Maximum connections showed 100 and it showed the same for Pool_01_80. Each pool has 5 web servers, during first test without iRule, each server showing 20 connections. I then cleared the statics and attached the below iRule to the virtual server. I then ran a second test with 100 threads(100 users). The virtual server showed 100 connection. Pool_01_80 showed 198 maximum connections and Pool_02_80 showed 51 maximum connections. Can you please tell me why the numbers seem off? I'm I reading it correctly?

when HTTP_REQUEST { if { rand() > 0.25 } { pool Pool_01_80 } else { pool Pool_02_80 } }

Thank you,

No, that's the only iRule I have applied.

Thank you,