Forum Discussion

Altostratus

Mar 09, 2017

iRule not hitting default pool?

Hi Guys, I have created an iRule to select a pool based on the URL the user goes to. testurl.com goes to pool_group1 testurl.com/diagnostics/* goes to pool_group2 The testurl.com/diagn...

Cirrus

Mar 09, 2017

it could be because you are searching on http::path, but im not 100% about this. But i have made a suggestion, that takes a slightly different approach:

            when HTTP_REQUEST {
              if { [string tolower [HTTP::uri]] starts_with "diagnostics"} {
                pool pool_group2
                persist source_adr 255.255.255.255 1800 
                  }
             else { pool pool_group1 
              }
            }

Kai_Wilke
MVP
Mar 09, 2017
Hai Kai, 😉

[HTTP::uri]
or
[HTTP::path]
are in this specific scenario almost interchangeable. And adding a
[string tolower]
command is always a good idea if endusers are involved... 😉

Cheers, Kai
Kai_M__48813
Cirrus
Mar 09, 2017
yeah..was a bit unsure about that...so i just used http::uri out of old habit, and probably a lack of coffee:D

string tolower should almost be mandatory, if you ask me..has saved me countless hours of troubleshooting, because of end users using capital letters when typing in the url..
phipse
Altostratus
Mar 09, 2017
Something seems to be wrong with the syntax?

Please see error below

/CCRegressionTEST/irule_CCdiagnosticsimages_redirect:4: error: ["invalid argument source_adr; expected syntax spec: (add|carp|cookie|delete|dest_addr|hash|lookup|msrdp|none|simple|sip|source_addr|ssl|sticky|uie|universal) "][persist source_adr 255.255.255.255 1800 ]
Kai_Wilke
MVP
Mar 09, 2017
Hi Phipse,

just a minor typo. Change persist
persist source_adr
to
persist source_addr
...

Cheers, Kai

phipse

Altostratus

Mar 09, 2017

        when HTTP_REQUEST {
          if { [string tolower [HTTP::uri]] starts_with "diagnostics"} {
            pool pool_group2
            persist source_addr 255.255.255.255 1800 
              }
         else { pool pool_group1 
          }

}

Accepts this fine, however this has not resolved the issue and it breaks both the pool selections... Anything else you can suggest?

Kai_Wilke
MVP
Mar 09, 2017
Hi Phipse,

the problem with the above iRule is, that an URI always starts_with a
/
char, so the
starts_with "diagnostics"
condition is never meet.

Note: Scroll to the buttom of this page and apply the provided iRules to see where it breaks.

Cheers, Kai