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Moayad_Hamdan_3's avatar
Moayad_Hamdan_3
Icon for Nimbostratus rankNimbostratus
Dec 04, 2016

URL and IP check iRule

Hi all i have the following code: when CLIENT_ACCEPTED { set poolDefault [LB::server pool] } when HTTP_REQUEST { set path [string tolower [HTTP::path]] if { $path contains "/g2b"} { po...
application delivery
BIG-IP
devops
iRules
  • VernonWells's avatar
    VernonWells
    Dec 04, 2016

     

    when HTTP_REQUEST {
    switch -glob [HTTP::path] {
        "*/g2b*" { pool G2B_Pool }
        "*/portal/g2c*" { pool G2C_Pool }
        "*/_layout/15*" {
            if { [IP::client_addr] matches_glob "10.10.10.1\[01\]" } {
                pool G2B_Pool
            }
        }
    }
}

     

    I removed the CLIENT_ACCEPTED code because, unless poolDefault is actually utilized elsewhere. I also removed the default branch (the else clause in the original code). If the pool associated with the Virtual Server is already set to B2B_Pool, then the default branch is redundant. Finally, I removed the string tolower for the path. Whether it makes sense depends on the path semantics for the webserver. See the Analysis section in this recipe for more details:

VernonWells's avatar
VernonWells
Icon for Employee rankEmployee

That's the reason for omitting the default branch: if a Request Target matches none of the conditions, then the default pool will automatically be used.

For the newest addition:

 

when HTTP_REQUEST {
    switch -glob [HTTP::path] {
        "*/g2b*" { pool G2B_Pool }
        "*/portal/g2c*" { pool G2C_Pool }
        "*/_layout/15*" {
            switch [IP::client_addr] {
                "10.10.10.10" -
                "10.10.10.11" { pool G2B_Pool }
                "10.10.10.61" -
                "10.10.10.63" { pool G2C_Pool }
            }
        }
    }
}

 

Moayad_Hamdan_3's avatar
Moayad_Hamdan_3
Icon for Nimbostratus rankNimbostratus
Dec 04, 2016

the ip address which i want to check is a response server ip address not the client.

 

after load balancer redirect the traffic to pool1 or pool2 , member servers of these two pools which are sharepoint servers are returning a url request to loadbalancer /_layout/15

 

load balancer will not redirect the traffic to correct pool , he will direct it to default pool because he can't detect \g2b or \g2c path.

 

i was thinking to make load balancer check the requester server ip and direct the traffic to correct pool.

 

i need load balancer to check both url and ip as all sharepoint servers in both pools will return the same url , load balancer should check the ip as well to direct the traffic correctly..