F5 need to same data to different nodes on a same vip

Hello Sam.

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There are some approaches that can vary depends on your topology and goal. I recommend you to check this out.

• SSLO - https://youtu.be/AadhUC5FNGs
• Interface Mirroring/Pool Clonning - https://support.f5.com/csp/article/K13392
• IRules for Packet Duplication - (1) https://devcentral.f5.com/s/articles/http-request-cloning - (2) https://devcentral.f5.com/s/articles/udp-tcp-packet-duplication

​

KR,

Dario.

Dario thanks for your response.

If go with this option how is cloning going to work across 2 servers. Can you help me understand the logic

rule http_request_clone_one_pool {

when RULE_INIT {

set static::hsl_debug 1

set static::hsl_pool "my_syslog_pool"

}

when CLIENT_ACCEPTED {

if {[active_members $static::hsl_pool]==0}{

log "[IP::client_addr]:[TCP::client_port]: [virtual name] $static::hsl_pool down, not logging"

set bypass 1

return

} else {

set bypass 0

}

set hsl [HSL::open -proto TCP -pool $static::hsl_pool]

if {$static::hsl_debug}{log local0. "[IP::client_addr]:[TCP::client_port]: New hsl handle: $hsl"}

}

when HTTP_REQUEST {

if {$bypass}{

return

}

HTTP::header insert X-Forwarded-For [IP::client_addr]

if {[HTTP::method] eq "POST"}{

if { [HTTP::header Content-Length] >= 1 and [HTTP::header Content-Length] < 1048576 }{

HTTP::collect [HTTP::header Content-Length]

} elseif {[HTTP::header Content-Length] == 0}{

HSL::send $hsl "[HTTP::request]\n"

if {$static::hsl_debug}{log local0. "[IP::client_addr]:[TCP::client_port]: Sending [HTTP::request]"}

}

} else {

HSL::send $hsl "[HTTP::request]\n"

if {$static::hsl_debug}{log local0. "[IP::client_addr]:[TCP::client_port]: Sending [HTTP::request]"}

}

}

when HTTP_REQUEST_DATA {

set request_cmd "HTTP::request"

if {$static::hsl_debug}{log local0. "[IP::client_addr]:[TCP::client_port]: Collected [HTTP::payload length] bytes,\

sending [expr {[string length [eval $request_cmd]] + [HTTP::payload length]}] bytes total"}

HSL::send $hsl "[eval $request_cmd][HTTP::payload]\nf"

}

}