Hello Team, I wonder if f5 is able to monitor to servers intermitently For example ; we have a pool and the pool has 4 members and f5 will take down them and up periodically example ;in 15 muntes for example; member x down and after 15 minutes member x up and after 15 minutes member x down Do you think How can we perform the monitoring ? thank you in advance.

Can you provide some more detail on the monitor type and configuration please.

Hello Stive, we want to monitor the back end servers via http monitor but as ı stayed above f5 will mark down the back end servers and 15 minutes later mark up so we will be monitor the back end servers periodically like down and 15 minutes later up and 15 minutes later down. how can we perform this via script please help me on this. thank you...

Can you post the configured send and receive strings? When the monitor marks the server(s) as down, can you check whether they are in fact responding by doing a telnet test from the BIG-IP to the relevant port and entering the send string.

f5 will mark down the back end servers and 15 minutes later mark up so we will be monitor the back end servers periodically like down and 15 minutes later up and 15 minutes later down.what are you going to do when traffic is coming but pool is down? besides external monitor, i think irule can make it too by calculating on time (e.g. mod). the following is discussion in the past. although it is not exactly what you are asking, it might be helpful. Schedule iRule https://devcentral.f5.com/community/group/aft/1179351/asg/50 Schedule an iRule for specific date/time https://devcentral.f5.com/community/group/aft/13201/asg/51

Hello, no receive string and send string with monitor you can just consider the http monitor also we don't wan to schecule any time on the irule because we just want to mark down some members of existing pool and so the other production members that are in the pool will not be affected like rejection or discarding . is that possible ? thank you

custom_extarnal_monitor

12 Replies

What_Lies_Bene1
Cirrostratus
Dec 31, 2012
Can you provide some more detail on the monitor type and configuration please.
waterfall_10467
Altostratus
Dec 31, 2012
Hello Stive,

we want to monitor the back end servers via http monitor but as ı stayed above f5 will mark down the back end servers and 15 minutes later mark up so we will be monitor the back end servers periodically like down and 15 minutes later up and 15 minutes later down.

how can we perform this via script

please help me on this.

thank you...
What_Lies_Bene1
Cirrostratus
Jan 02, 2013
Can you post the configured send and receive strings? When the monitor marks the server(s) as down, can you check whether they are in fact responding by doing a telnet test from the BIG-IP to the relevant port and entering the send string.
nitass
Employee
Jan 02, 2013
f5 will mark down the back end servers and 15 minutes later mark up so we will be monitor the back end servers periodically like down and 15 minutes later up and 15 minutes later down.what are you going to do when traffic is coming but pool is down?

besides external monitor, i think irule can make it too by calculating on time (e.g. mod). the following is discussion in the past. although it is not exactly what you are asking, it might be helpful.

Schedule iRule

https://devcentral.f5.com/community/group/aft/1179351/asg/50

Schedule an iRule for specific date/time

https://devcentral.f5.com/community/group/aft/13201/asg/51
waterfall_10467
Altostratus
Jan 02, 2013
Hello,

no receive string and send string with monitor you can just consider the http monitor also we don't wan to schecule any time on the irule because we just want to mark down some members of existing pool and so the other production members that are in the pool will not be affected like rejection or discarding . is that possible ?

thank you
waterfall_10467
Altostratus
Jan 08, 2013
Hello,

Please someone may support me about this

thank you in advance
What_Lies_Bene1
Cirrostratus
Jan 10, 2013
Can, I'm not quite clear on what your requirements are now. Can you please re-iterate with a bit more detail please?
waterfall_10467
Altostratus
Jan 14, 2013
Hello Steve,

suppose , there is a poool and that has 4 members ok. And then one of the members will marked down and up through script monitor.

example: x member will be marked down then up then down and this processing periodically will be proceeded like 15 minutes.

is it possible ? since I have not more info about scripting I need your support about this matter

thank you in advance
What_Lies_Bene1
Cirrostratus
Jan 15, 2013
Apologies but I'm still having problems understanding you I'm afraid. You want a script to mark Pool Members up and down on a periodic basis? If so, why?
waterfall_10467
Altostratus
Jan 17, 2013
customer wants since they are able to do that on the netscaler. I wonder if we are able to do that ? is that posiible ? or is there a diffrent way for that?