Forum Discussion
monitoring external file via IRules
I was trying to figure out if it's possible can monitor an external file using IRules.
So example would be:
when HTTP_RESPONSE {
if { (http://cont145.qad.com/zbc.tx) } {
Read values
if { ("ACTIVE" in the file) } {
Route traffic to member A of pool
} else {
Route traffic to member B of pool
}
}
}
Thanks in advance.
Regards,
TRX
2 Replies
Michael_YatesNimbostratus
Hi trx,
Someone else asked a similar question some time ago here: http://devcentral.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/1178691/showtab/groupforums/Default.aspx
I would suggest that rather than doing this with an iRule, why don't you use Health Monitors and Priority Activation Groups?
Put all servers in a single pool (assign Priority Groups if desired) and add a custom health check that will look for the "Active" return of a get to "/zbc.tx".
If they do not pass the health check they will be marked down and traffic routed to the other servers. Rather than an all or nothing with a pool of servers you would be able to do them individually and still maintain a preference between A and B Servers.
Just a thought.
Hope this helps.- Best solution I found:
HTTP_REQUEST {
................
2 Virtual servers HTTP/HTTPS2 Pools "YYY and ZZZ"YYY/ZZZ pool member IP 192.168.254.289 over port 80 containshealth monitor that looks at a text file string. If the stringis NOT there the member YYY/ZZZ is marked DOWN.If YYY/ZZZ is marked DOWN, route traffic to ONE of the pool members YYY/ZZZ
if { ([pool YYY/ZZZ member 192.168.254.189 80] < 1) } {go to fail over serverpool YYY/ZZZ member 167.3.11.93 443} else {stay on primary serverpool YYY/ZZZ member 167.3.10.93 443}........
}
Hope this helps anyone else.
Thanks!
Regards,
TRX
