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Hi gang,
We've been running a 3 machine setup (1 dir, 2 rs) in TUN mode for
about the past 2 months.
Recently we've had this affliction where if you goto www.omnovia.com,
everything is super ass slow. But if you goto wwwdb1.omnovia.com (or
wwwdb2) everything is blazing fast.
I'm talking huge differences here. People on a T1 downloading a file
from www are getting around 10KB/sec and that same file from wwwdb1 is
around 110KB/sec.
This problem started this morning for the 2nd time. It happened about
2 weeks ago but we did nothing to the setup and the problem seemed to
fix itself. But now that it's happened again we need some answers.
Our config as of right now: (ip addys changed to protect the innocent)
.35 VIP (ip that www.omnovia.com points to)
.50 RS1
.130 RS2
[root@lb1 ~]# ipvsadm -L -n
IP Virtual Server version 1.2.0 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 75.52.166.35:80 rr
-> 75.52.166.50:80 Tunnel 1 12 95
-> 75.52.166.130:80 Tunnel 1 12 107
TCP 75.52.166.35:443 rr
-> 75.52.166.50:443 Tunnel 1 18 1331
-> 75.52.166.130:443 Tunnel 1 28 1351
TCP 75.52.166.35:3306 rr
-> 75.52.166.130:3306 Tunnel 1 4 0
-> 75.52.166.50:3306 Tunnel 1 5 0
We have 1 iptable rule on both RS's to combat the POST packet size issue:
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
TCPMSS tcp -- 75.52.166.35 0.0.0.0/0 tcp
flags:0x16/0x12 TCPMSS set 1440
We've had this in place since Jan 3rd so I don't see how suddenly this
could be causing a problem.
Can anyone offer any suggestions on what to check, look for, diagnose,
etc on what this problem is?
I'd also add that my connection from home doesn't have this problem.
From home, www, wwwdb1, wwwdb2 are all blazing fast. But we just had a
customer call from Chicago who was getting slow speeds and here in our
office its slow as well to www but not to db1, db2.
Many Many Thanks in Advance for any Assistance.
Cheers,
Matthew
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