Troubleshooting connections

[Simon Horman]

On Fri, May 11, 2007 at 05:41:31PM -0300, Denis wrote:
> Hi dears!
> 
> I have an UltraMonkey 3 streamlined load balancing system.  There are only
> two servers in this setup.  The servers run as both directors and squid proxy
> servers.  The LVS manages 1 virtual IP shared on both servers.
> 
> Few days ago I made an dist-upgrade to etch version on one of the machines.
> 
> Everything appeared to be working properly.
> 
> Today I noted that lots of clients couldn't connect to the servers.
> And surf the web.
> 
> If I try to connect to the proxys by the real IPs, I get success.
> 
> But by the virtual IP I cannot connect.
> 
> looking at
> #ipvsadm -L -nc |grep 172.16.224.116
> 
> I got this:
> 
> TCP 00:40  SYN_RECV    172.16.224.117:1722 172.16.8.77:3128   172.16.8.86:3128
> TCP 00:40  SYN_RECV    172.16.224.117:1723 172.16.8.77:3128   172.16.8.86:3128
> TCP 00:46  SYN_RECV    172.16.224.117:1733 172.16.8.77:3128   172.16.8.86:3128
> 
> What can I do to solve that?
> 
> actually when I get problems with LVS I get little lost to troubleshoot.
> 
> Can U tell me how do u troubleshoot your own LVSs ?

What does the ouput of ipvsadm -Ln look like?


-- 
Horms
  H: http://www.vergenet.net/~horms/
  W: http://www.valinux.co.jp/en/


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