Redirect URIs in datagroup to dedicated node

southern_nordic For various reasons you should try not to send traffic to a specific node and instead you should create a pool for this single node and reference that pool instead. I believe the following will correct your error as well as send traffic to a pool with just the single node in it rather than referencing the node by itself. This iRule also assumes you have a default pool configured on the VS and will send traffic to that pool if it doesn't match the data-group list.

when CLIENT_ACCEPTED priority 500 {

    set DEFAULT_POOL [LB::server pool]

}

when HTTP_REQUEST priority 500 {

    # Get the request URI
    set request_uri [HTTP::uri]

    # Check if the request URI matches any entry in the data group
    if { [class match -- ${request_uri} == ACL_Intranett-webforms] } {

        # Set the persistence cookie name
        set persistence_cookie_name "stick_cookie_name"

        # Check if the persistence cookie exists
        set cookie_value [HTTP::cookie ${persistence_cookie_name}]

        if { ${cookie_value} == "" } {
            # If the cookie doesn't exist, create and set the cookie
            set cookie_value [IP::client_addr]
            HTTP::cookie insert ${persistence_cookie_name} ${cookie_value}
        }

        # Set the persistence based on the cookie
        persist uie cookie ${persistence_cookie_name}
        pool POOL_ACL_Intranett_Webforms
    
    } else {
        pool ${DEFAULT_POOL}
    }

}

The irule now compiles with no errors. However when I generate traffic I see the following error in the logs:

ERR_ARG (line 1) invoked from within "HTTP::cookie insert ${persistence_cookie_name} ${cookie_value}"

I guess it is having trouble when executing the cookie insert as result persistence is not honoured

Apologies for the late response here.

I have applied the irule above and while the irule did not give any errors, the webform still produces an error due to a "persistence" type error. When we run a test we see the requests to still changing servers.

The webpage is a webform that is filled in and submitted and before submition but before submitio a verification process checks if the server that received the Submitted form is the same servers that loaded up the webform. This continues to give an error. I even tried to match just the URI without the "datagroup" by using the hostname, URI and persistence but the website still fails the "persistence" test.

Are there any recommendations on how to update this irule to specifically match traffic from hostname "demo.technical.olive.com" and URI "/object.php?categoryID=3453" and send this traffic to pool "ACL_Intranett_Webforms" with persistence cookie? The rest of the traffic can default to the virtual server pool.

The main aim to match all URIs in teh datagroup but for now I would like to test the hostname and URI first