Forum Discussion

Raja_M's avatar
Raja_M
Icon for Nimbostratus rankNimbostratus
Jul 16, 2018

HSL is not working

Have configured the Pool member and created a Rule for HSL also added the syslog HSL server. Could you please help me in this. I dont see any hit count on the irule or no more statistics on pool member.

ltm pool logInsight_pool_syslog { members { logInsight_node:514 { address 172.30.4.230 session monitor-enabled state up } } monitor gateway_icmp }

++++++++++++++++++++++++++++

sys log-config destination remote-high-speed-log logInsight_pool_syslog { description HSL-Logging pool-name logInsight_pool_syslog }

+++++++++++++++++++++

============================= iRule: logInsight_iRule_http START ==============================

when CLIENT_ACCEPTED { set client [IP::client_addr] set client_req_start_time [clock clicks -milliseconds] }

when SERVER_CONNECTED { set server_req_start_time [clock clicks -milliseconds] }

when HTTP_REQUEST_SEND { set http_req_send_start_time [clock clicks -milliseconds] set node_elapsed_time [expr {$http_req_send_start_time - $server_req_start_time}]

}

when HTTP_REQUEST {

set client_latency [expr {[clock clicks -milliseconds] -  $client_req_start_time} ]
set vhost [HTTP::host]:[TCP::local_port]
set url [HTTP::uri]
set method [HTTP::method]
set http_version [HTTP::version]
set user_agent [HTTP::header "User-Agent"]
set tcp_start_time [clock clicks -milliseconds]
set req_start_time [clock format [clock seconds] -format "%Y/%m/%d %H:%M:%S"]
set req_elapsed_time 0
set virtual_server [LB::server]

if { [HTTP::header Content-Length] > 0 } then {
    set req_length [HTTP::header "Content-Length"]
    if {$req_length > 4000000} then {
        set req_length 4000000
    }
    HTTP::collect $req_length
} else {
    set req_length 0
}

if { [HTTP::header "Referer"] ne "" } then {
    set referer [HTTP::header "Referer"]
} else {
    set referer -
}

}

when HTTP_RESPONSE {

set hsl [HSL::open -proto TCP -pool logInsight_pool_syslog]
set resp_start_time [clock format [clock seconds] -format "%Y/%m/%d %H:%M:%S"]
set node [IP::server_addr]:[TCP::server_port]
set status [HTTP::status]

set req_elapsed_time [expr {[clock clicks -milliseconds] - $tcp_start_time}] set server_latency [expr {[clock clicks -milliseconds] - $server_req_start_time} ]

if { [HTTP::header Content-Length] > 0 } then {
    set response_length [HTTP::header "Content-Length"]
} else {
    set response_length 0
}

HSL::send $hsl "<190>f5_web_access_info|$vhost|$virtual_server|$client|$method|\"$url\"|HTTP/$http_version|$req_start_time|$req_length|$req_elapsed_time|$node|$status|$resp_start_time|$response_length|$user_agent|$client_latency|$server_latency|\"$referer\"\r\n" }

============================= iRule: logInsight_iRule_http END ==============================
application delivery
iRules
LTM

3 Replies

Sort By
  • Snl's avatar
    Snl
    Icon for Cirrostratus rankCirrostratus
    Jul 17, 2018

    Try below irule , HTH

    POOL_SYSLOG-create a pool with syslog server ip address

        when HTTP_REQUEST {

    set http_request_time [clock clicks -milliseconds]
    set timestamp [clock format [clock seconds] -format {%d/%b/%Y:%H:%M:%S %z}] 
    set remote [IP::remote_addr]
    set client [IP::client_addr]:[TCP::client_port]
    set url [HTTP::host][HTTP::uri]
    set referer [HTTP::header "Referer"]
    set vip [IP::local_addr]:[TCP::local_port]
    set httpMethod [HTTP::method]
    set httpVersion [HTTP::version]
    set xforwardfor [HTTP::header X-Forwarded-For]
    set url [string map " x" $url]
    set referer [string map " x" $referer] 
    set hsl [HSL::open -proto UDP -pool POOL_SYSLOG]

     Limit the url variable to 300 characters
    if {[string length $url] > 300} {
      set url "[string range $url 0 300]..."   
    }

     Limit the referer variable to 300 characters
    if {[string length $referer] > 300} {
      set referer "[string range $referer 0 300]..."   
    }

     Build the Request log line
    set request_log_line " $timestamp  [virtual name]  $client  $remote  $vip  $url  $referer  $httpMethod  $httpVersion" 
    log local0.info "Request - $request_log_line"
    }

    when HTTP_RESPONSE {

     VARIABLES
     Initialize local variables used in this rule
    
    set http_response_time [ clock clicks -milliseconds ]
    set client [IP::client_addr]:[TCP::client_port]
    set node [IP::server_addr]:[TCP::server_port]
    set nodeResp [HTTP::status]
    set payloadLength [HTTP::payload length]
    set responseTime [expr $http_response_time - $http_request_time]

      Build the Response log line
     set response_log_line "$client  $node  $nodeResp  $payloadLength  $responseTime  $http_request_time  $xforwardfor" 
    log local0.info "Response - $response_log_line"

     Write Request and Response log lines to the LTM log
    HSL::send $hsl "IRULE_COMMON_LOG : $request_log_line  -  $response_log_line"
     }
    }
  • Raja_M's avatar
    Raja_M
    Icon for Nimbostratus rankNimbostratus
    Jul 17, 2018

    Treied adding this irule with same pool i dont see any hit count on pool either irule. I chnaged from tcp to UDP in the HSL remote logging

     

  • Lee_Sutcliffe's avatar
    Lee_Sutcliffe
    Icon for Nacreous rankNacreous
    Jul 17, 2018

    Do you see any errors in /var/log/ltm? As a side note, you do not need to use 'then' in an if statement