Forum Discussion
Leav97
Altocumulus
AltocumulusiRule to verify node is member of pool and passing the pools health check
I have an irule that uses a table to determine which node a client should use. I'd like to have the rule double check the node is passing health checks and is a member of a pool. Just as a precaution in case pool members have changed. The existing rule is pretty basic. But, I haven't found any examples online to help me build out more error prevention.
when CLIENT_ACCEPTED {
if { [table lookup tbltest[TCP::local_port]] ne "" } {
node [table lookup tbltest[TCP::local_port]]
}
}
when SERVER_CONNECTED {
set TargetNode [table lookup tbltst[TCP::local_port]]
set ActiveNode [active_members -list test-pool]
if {$TargetNode eq "" } {
return
}
if {$ActiveNode contains $TargetNode } {
node $TargetNode
}
}
JGCumulonimbus
How is this table updated, and why isn't a health monitor good enough?
Leav97when SERVER_CONNECTED {
table set "tbltest[TCP::remote_port]" [IP::remote_addr] indefinite
}
If there is already an entry from the last successful connection, the rule skips the health monitor on the pool. I'd like the rule to double check that the server is healthy and in the pool.
- Leav97
when SERVER_CONNECTED {
set TargetNode [table lookup tbltst[TCP::local_port]]
set ActiveNode [active_members -list test-pool]
if {$TargetNode eq "" } {
return
}
if {$ActiveNode contains $TargetNode } {
node $TargetNode
}
}