Forum Discussion

Formater's avatar
Formater
Icon for Employee rankEmployee
Jan 27, 2011

How send a string to a specific IP's specific port when all pool members of a VIP are down?

I have a customer who has a pool, which includes there pool members. They want to send some special string in TCP to a specific IP's specific port when all the members of this pool are down. For examp...
application delivery
dev
devops
iRules
hooleylist's avatar
hooleylist
Icon for Cirrostratus rankCirrostratus
Jan 27, 2011
Hi Johnson,

 

 

I wonder if you could check for [active_members [LB::server pool]] == 0 in CLIENT_ACCEPTED. If it is true, then collect the TCP payload with TCP::collect, replace all of it with TCP::payload replace and then select a new destination IP:port with the node command. Here are the wiki pages for the related commands:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/lb__server

 

http://devcentral.f5.com/wiki/default.aspx/iRules/active_members

 

http://devcentral.f5.com/wiki/default.aspx/iRules/tcp__collect

 

http://devcentral.f5.com/wiki/default.aspx/iRules/tcp__payload

 

http://devcentral.f5.com/wiki/default.aspx/iRules/node

 

 

Aaron