load balance using http methods

Ahmed_Mohsen · ‎13-Oct-2021

We have 1 read/write node and two Read-only nodes, so we want all the Get http requests to be distributed equally in them and all other requests like POST, Patch, Delete to be forwarded to read/write node

Example :-

Node1 : R/W " it will receives Get , Post,Patch,Delete "

Node2 : Read-only "it will receives Get Requests only "

Node3 : Read-only "it will receives Get Requests only "

Thank you in advance

MaximP · ‎13-Oct-2021

Hi, Ahmed.

You need to use an Irule, something like this

when HTTP_REQUEST {

if { ([string toupper [HTTP::method]] equals "POST" ) or ([string toupper [HTTP::method]] equals "PATCH" ) or ([string toupper [HTTP::method]] equals "DELETE" ) } {

node 1.1.1.1 443

}

elseif { [string toupper [HTTP::method]] equals "GET" } {

pool POOL-name

}

else {

HTTP::respond 405 content {

<html>

<head><title>HTTP Request denied</title></head>

<body>Your HTTP requests are being throttled.</body>

</html>

}

Ahmed_Mohsen · ‎14-Oct-2021

Thank you for your reply

Kindly when i deploy this iRule it shown me an error

MaximP · ‎14-Oct-2021

Yep, there were some extra brackets. I edited previos message, try again.

Ahmed_Mohsen · ‎17-Oct-2021

Thank you i will try it 🙂

Ahmed_Mohsen · ‎19-Oct-2021

Salam bro ,

I am trying to test the script in testing environment but it shown this error to me :-

Thank you in advance

ka1021 · ‎20-Oct-2021

Hello Ahmed,

i guess there are some extra spaces between "}" and "elseif".

when HTTP_REQUEST {

if { ([string toupper [HTTP::method]] equals "POST" ) or ([string toupper [HTTP::method]] equals "PATCH" ) or ([string toupper [HTTP::method]] equals "DELETE" ) } {

node XXXXXXX XX

} elseif { [string toupper [HTTP::method]] equals "GET" } {

pool XXXXXX

} else {

HTTP::respond 405 content {

<html>

<head><title>HTTP Request denied</title></head>

<body>Your HTTP requests are being throttled.</body>

</html>

}

ka1021 · ‎20-Oct-2021

☝️ Try this

Ahmed_Mohsen · ‎20-Oct-2021

Thank you it's accepted now ,

before we start the testing in virtual server setting i will need to configure http profile or http-explicit ?

ka1021 · ‎21-Oct-2021

Should work with http profile.

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load balance using http methods

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