サービスに F5 ロード バランサを導入しようとしています。そのために、ユニバーサル パーシスタンス機能を使用してセッションを永続化する iRule を開発しています。
しかし、iRule コマンド「persist uie」でセッションを維持しようとすると、遅延が発生します。
遅延は 1000 ミリ秒を超えることがあります...
何が問題なのですか? どうすればこのレイテンシを取り除くことができますか??
iRule コードと記録したログを参照してください。
前もって感謝します
iRule コードは次のとおりです。
when HTTP_REQUEST {
if {[HTTP::host] equals "mpi-lb.creditguard.co.il" } {
set txID1 ""
set txID2 ""
set txID3 ""
set txID4 ""
set txID5 ""
set txID6 ""
set txID7 ""
set txID8 ""
# Log details for the request
regexp {(txId|token|mpiTransactionId|transactionID)[=>]([0-9a-z]{8}-([0-9a-z]{4}-){3}[0-9a-z]{12})([&< ]|$)} [HTTP::uri] => txID1 txID2 txID3 txID4
regexp {(txId|token|mpiTransactionId|transactionID)[=>]([0-9a-z]{8}-([0-9a-z]{4}-){3}[0-9a-z]{12})([&< ]|$)} [HTTP::payload] => txID5 txID6 txID7 txID8
log local0. "uri:[HTTP::uri]:payload: txID2:$txID2 txID6:$txID6"
if {$txID2 != ""} {
log local0. "persist lookup uie:[persist lookup uie $txID2] $txID2 in uri"
persist uie $txID2
} elseif {$txID6 != ""} {
log local0. "persist lookup uie:[persist lookup uie $txID6] $txID6 in paylod"
persist uie $txID6
}
}
}
when HTTP_RESPONSE {
if {([IP::server_addr] equals "172.16.100.16") || ([IP::server_addr] equals "172.16.100.17") } {
# Trigger collection for up to 1MB of data
if {[HTTP::header exists "Content-Length"] && [HTTP::header "Content-Length"] <= 1048576} {
set content_length [HTTP::header "Content-Length"]
} else {
set content_length 1048576
}
# Check if $content_length is not set to 0
if { ([HTTP::status] == 200) && ($content_length > 0)} {
HTTP::collect $content_length
}
}
}
when HTTP_RESPONSE_DATA {
if {([IP::server_addr] equals "172.16.100.16") || ([IP::server_addr] equals "172.16.100.17") } {
# do stuff with the payload
#find the application unique identifier between <uid> and </uid> (5 is the length of <uid> string)
set txId [string trim [findstr [HTTP::payload] "<txId>" 5 "</txId>"] ">"]
if {$txId != ""} {
log local0. "[IP::server_addr] : persist add uie #$txId#"
persist add uie $txId 1800
}
}
}
ログは次のとおりです (14:16:08 から 14:17:08 までのレイテンシーを確認できます)。
Tue Jun 14 14:16:03 IDT 2016 info cgwaf tmm3[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/CreateTransactionExtended:payload: txID2: txID6:
Tue Jun 14 14:16:04 IDT 2016 info cgwaf tmm3[10326] Rule /Common/mpi-lb-irule <HTTP_RESPONSE_DATA>: 172.16.100.16 : persist add uie #03f72209-754e-4bde-85f6-69cdf4d27526#
Tue Jun 14 14:16:08 IDT 2016 info cgwaf tmm1[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/PerformTransaction? txId=03f72209-754e-4bde-85f6-69cdf4d27526:payload: txID2:03f72209-754e-4bde-85f6-69cdf4d27526 txID6:
Tue Jun 14 14:16:08 IDT 2016 info cgwaf tmm1[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: persist lookup uie:/Common/mpi-lb 172.16.100.16 443 03f72209-754e-4bde-85f6-69cdf4d27526 in uri
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/cvv.jpg:payload: txID2: txID6:
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/mastercard_slice.gif:payload: txID2: txID6:
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/pci_slice.gif:payload: txID2: txID6:
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/visa_slice.gif:payload: txID2: txID6:
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/Logo.gif:payload: txID2: txID6:
Tue Jun 14 14:17:08 IDT 2016 info cgwaf tmm3[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/merchantPages/ResponsiveWebSources/images/qm.png:payload: txID2: txID6:
Tue Jun 14 14:18:06 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri://CGMPI_Server/ProcessCreditCard:payload: txID2: txID6:03f72209-754e-4bde-85f6-69cdf4d27526
Tue Jun 14 14:18:06 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: persist lookup uie:/Common/mpi-lb 172.16.100.16 443 03f72209-754e-4bde-85f6-69cdf4d27526 in paylod
Tue Jun 14 14:18:07 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri:/CGMPI_Server/merchantPages/nlb/OK.jsp?uniqueID=697536646.622257&lang=EN&authNumber=9125242& responseMac=7e77d7fe857e707ddf1c8990c80da8373f716c79d0ee79b88 f3d898a9ff0afc0&cardToken=1051484189394580& cardExp=0217&personalId=88888888& cardMask=458045******4580& txId=03f72209-754e-4bde-85f6-69cdf4d27526& numberOfPayments=&firstPayment=&periodicalPayment=:payload: txID2:03f72209-754e-4bde-85f6-69cdf4d27526 txID6:
Tue Jun 14 14:18:07 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: persist lookup uie:/Common/mpi-lb 172.16.100.16 443 03f72209-754e-4bde-85f6-69cdf4d27526 in uri
Tue Jun 14 14:18:07 IDT 2016 info cgwaf tmm2[10326] Rule /Common/mpi-lb-irule <HTTP_REQUEST>: uri:/CGMPI_Server/merchantPages/WebSources/images/ssl.png:payload: txID2: txID6: