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Networking problem [message #37783]

Wed, 21 October 2009 07:27

Boris
Messages: 2
Registered: May 2008

Junior Member

Hi everybody!

Centos 5 x86_64, kernel 2.6.18-128.2.1.el5.028stab064.7, vzctl 3.0.23.

There are 3 IP addresses on the server - a.b.x.c (hwnode ip) and two for containers - a.b.y.d and a.b.y.e.
After I created containers by vzctl create, added them IPs and started them, there is no network in containers.

Then I tried:
ifconfig eth0:0 up a.b.y.d netmask 255.255.255.192; sleep 1; ifconfig eth0:0 down

and networking became up for a few hours. Than, everything stopped working again.

What can I do with it?

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Re: Networking problem [message #37813 is a reply to message #37783]

Sat, 24 October 2009 10:58

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

- please specify whether venet or veth is used.
- please, make sure that "arp -n" output contains VEs' ip addresses so that HN is able to respond to "arp who-has" requests.
- make sure that sysctl are set properly
http://wiki.openvz.org/Quick_installation#sysctl
- use tcpdump to examine network packets behavior
http://forum.openvz.org/index.php?t=tree&goto=27545& #msg_27545

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Re: Networking problem [message #37814 is a reply to message #37813]

Sat, 24 October 2009 11:10

Boris
Messages: 2
Registered: May 2008

Junior Member

I used venet, and it was my mistake.
I had read http://wiki.openvz.org/VEs_and_HNs_in_different_subnets and solved the problem.

Thanks for your answer!

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