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Cl__i_14987's avatar
Cl__i_14987
Icon for Nimbostratus rankNimbostratus
Jan 06, 2013

How to check status off Application to selective server member in pool

Dear all

 

I have situation to ask you for suggestion. Now I have on VS for Web server (2 members in pool) and each of Web server(Web1, Web2) has own interactive with application server(App1, App2) on port TCP 1935.

 

So when I want to track on application servers status if one of them down I will switch to web server to another one. example when App1 down I will connect to Web2 instead for accessing.

 

But now F5 monitoring only Web1 and Web2. it cannot track on App1 and App2 so I think I need to do iRule for App1 and App2 status checking. How can I create the iRule for this situation.

 

 

Thanks you

 

 

 

application delivery
dev
devops
iRules

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  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jan 06, 2013
    But now F5 monitoring only Web1 and Web2. it cannot track on App1 and App2isn't health monitor with specifying app server in alias address/service port and assigning it to web server usable?
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jan 06, 2013
    e.g. 

    [root@ve10:Active] config  b pool foo list
pool foo {
   monitor all myhttp and mytcp1935
   members 200.200.200.101:80 {}
}
[root@ve10:Active] config  b monitor myhttp list
monitor myhttp {
   defaults from http
   recv "200 OK"
   send "GET / HTTP/1.1\r\nHost: \r\nConnection: Close\r\n\r\n"
}
[root@ve10:Active] config  b monitor mytcp1935 list
monitor mytcp1935 {
   defaults from tcp
   dest 200.200.200.111:1935
}
[root@ve10:Active] config  b self 200.200.200.10 list
self 200.200.200.10 {
   netmask 255.255.255.0
   vlan internal
   allow default
}

 pool status

[root@ve10:Active] config  b pool foo |grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:80   active,up

 tcpdump

[root@ve10:Active] config  tcpdump -nni 0.0 -s0 port 80 or port 1935
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 65535 bytes
11:17:01.127056 IP 200.200.200.10.51288 > 200.200.200.101.80: S 1740295:1740295(0) win 5840  out slot1/tmm0 lis=
11:17:01.127731 IP 200.200.200.101.80 > 200.200.200.10.51288: S 3622615798:3622615798(0) ack 1740296 win 5792  in slot1/tmm0 lis=
11:17:01.128051 IP 200.200.200.10.51288 > 200.200.200.101.80: . ack 1 win 46  out slot1/tmm0 lis=
11:17:01.128379 IP 200.200.200.10.51288 > 200.200.200.101.80: P 1:46(45) ack 1 win 46  out slot1/tmm0 lis=
11:17:01.129725 IP 200.200.200.101.80 > 200.200.200.10.51288: . ack 46 win 46  in slot1/tmm0 lis=
11:17:01.129735 IP 200.200.200.101.80 > 200.200.200.10.51288: P 1:352(351) ack 46 win 46  in slot1/tmm0 lis=
11:17:01.129739 IP 200.200.200.101.80 > 200.200.200.10.51288: F 352:352(0) ack 46 win 46  in slot1/tmm0 lis=
11:17:01.130410 IP 200.200.200.10.51288 > 200.200.200.101.80: . ack 352 win 54  out slot1/tmm0 lis=
11:17:01.130739 IP 200.200.200.10.51288 > 200.200.200.101.80: F 46:46(0) ack 353 win 54  out slot1/tmm0 lis=
11:17:01.131997 IP 200.200.200.101.80 > 200.200.200.10.51288: . ack 47 win 46  in slot1/tmm0 lis=

11:17:02.159136 IP 200.200.200.10.49192 > 200.200.200.111.1935: S 1333436345:1333436345(0) win 5840  out slot1/tmm0 lis=
11:17:02.161051 IP 200.200.200.111.1935 > 200.200.200.10.49192: S 584352362:584352362(0) ack 1333436346 win 5792  in slot1/tmm0 lis=
11:17:02.162395 IP 200.200.200.10.49192 > 200.200.200.111.1935: . ack 1 win 46  out slot1/tmm0 lis=
11:17:02.162403 IP 200.200.200.10.49192 > 200.200.200.111.1935: F 1:1(0) ack 1 win 46  out slot1/tmm0 lis=
11:17:02.163795 IP 200.200.200.111.1935 > 200.200.200.10.49192: F 1:1(0) ack 2 win 46  in slot1/tmm0 lis=
11:17:02.164792 IP 200.200.200.10.49192 > 200.200.200.111.1935: . ack 2 win 46  out slot1/tmm0 lis=