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From: Herbert P÷tzl (herbert_at_13thfloor.at)
Date: Wed 09 Jul 2003 - 04:34:02 BST


On Tue, Jul 08, 2003 at 10:56:23PM -0400, Dinesh Mistry wrote:
>
> Ok
>
> Here is a really strange one, I am having a problem with one of my VPS
> servers, I am currently running kernel 2.4.21 with ctx-17 patch. I *JUST*
> upgraded from 2.4.20 ctx-17 thinking it would fix it, but I have the same
> EXACT problem

it seems, it isn't even vserver related at all ...
although, I guess, it is hard(er) to observe on
a non vserver system ...

> Every so often one of the VPS's looses one of its IP's the interface just
> goes down, if I do a ifconfig -a | grep <IP> its gone. Soon as I enter the
> VPS using vserver VPSNAME enter the interface comes back up automagically.
> This happens constantly on this server I have tired to grab a snippit to
> show you what I mean
>
> ---- **** START SNIPPIT **** ----
>
> ping 192.168.11.10
> PING 192.168.11.10 (192.168.11.10) from 64.106.207.140 : 56(84) bytes of
> data.

not realy strange, not even unusual, because your
ping is using address 64.106.207.140 to ping 192.168.11.10

> --- 192.168.11.10 ping statistics ---
> 3 packets transmitted, 0 received, 100% loss, time 2016ms
>
> [root_at_host05:/home/dmistry/YOURBIND]$ vserver torque2 enter
> ipv4root is now 192.168.11.10 192.168.11.11
> New security context is 13
> [root_at_vserver:torque2 /]ping 192.168.11.10
> PING 192.168.11.10 (192.168.11.10) from 192.168.11.10 : 56(84) bytes of
> data.
> 64 bytes from 192.168.11.10: icmp_seq=1 ttl=64 time=0.191 ms

this on the other hand will succeed, as would have
ping -I 192.168.11.10 192.168.11.10 from the outside ...

> --- 192.168.11.10 ping statistics ---
> 1 packets transmitted, 1 received, 0% loss, time 0ms
> rtt min/avg/max/mdev = 0.191/0.191/0.191/0.000 ms
> [root_at_vserver:torque2 /]logout
> [root_at_host05:/home/dmistry/YOURBIND]$ ping 192.168.11.10
> PING 192.168.11.10 (192.168.11.10) from 192.168.11.10 : 56(84) bytes of
> data.

again this uses the correct interface to send
the packets ...

> 64 bytes from 192.168.11.10: icmp_seq=1 ttl=64 time=0.160 ms
>
> --- 192.168.11.10 ping statistics ---
> 1 packets transmitted, 1 received, 0% loss, time 0ms
> rtt min/avg/max/mdev = 0.160/0.160/0.160/0.000 ms
>
> ---- **** FINISH SNIPPIT **** ----
>
> I do have a VPS called TORQUE also would the similarity in name cause a
> problem??

no, I did the calculation a dozen times on the
mailing list, (and I guess it wasn't added to
Pauls FAQ, Paul?), but this isn't an issue ...

> Help! Thanks

HTH,
Herbert

PS: once and for all, ping is the worst choice
to test for interface/routing/connectivity ...

> --------------------------------------------
> Dinesh Mistry
>
> YourHostDirect
> 1-800-210-6757
>
> Better, Faster and more Reliable Hosting
> http://www.yourhostdirect.com
> --------------------------------------------
>


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