Forum Discussion
cody8411_186897
Nimbostratus
NimbostratusActive/Standby load balancing dynamically with LTM
I'm not sure if I'm using the right terminology, but some application folks want to set up identical web servers where they can test upgrades and changes to server A while maintaining production traffic to server B.
LTM is currently directing traffic for the application using an iRule and matching URIs so it looks like:
www.company.com/app1 -> App1_Pool -> Node1 & Node2Is there something I can do to intelligently determine which node (or a different pool) this lands on without administrator intervention? Ideally something that they can trigger themselves when they are ready to upgrade their apps.
www.company.com/app1 -> App1_Pool -> Node 1 (if active) or Node 2 (if active)I thought of them possibly disabling the site in IIS which would make the port monitor go down and stop traffic flow but they want to still access the app in a testing capacity so that likely won't work.
Any help is appreciated, thanks!
Priority groups. You can assign nodes in a pool to different priority groups so that some nodes will only be used if others with a better priority are down.
ekaleido_26616Cirrocumulus
Priority groups. You can assign nodes in a pool to different priority groups so that some nodes will only be used if others with a better priority are down.
cody8411_186897Is there some other way I can monitor those devices to make it so they can trigger the priority in those pools? For instance, if I just use a basic TCP port monitor, those ports will never go down or be disabled.
- ekaleido_26616
You can create a custom health monitor such that they can modify something to cause the server to be removed from the pool, if that's what you're after.
- cody8411_186897
Great idea, I'll start to look at making a GET to return a string and take the the pool member down if it doesn't exist. That way they can remove the string on the passive node.
ekaleidoCirrus
Priority groups. You can assign nodes in a pool to different priority groups so that some nodes will only be used if others with a better priority are down.
- cody8411_186897
Is there some other way I can monitor those devices to make it so they can trigger the priority in those pools? For instance, if I just use a basic TCP port monitor, those ports will never go down or be disabled.
- ekaleido
You can create a custom health monitor such that they can modify something to cause the server to be removed from the pool, if that's what you're after.
- cody8411_186897
Great idea, I'll start to look at making a GET to return a string and take the the pool member down if it doesn't exist. That way they can remove the string on the passive node.