[OpenVZ] network

Theasker · Posted: Thu Sep 17, 2009 11:56 am Post subject: [OpenVZ] network

Anybody know how to configure the network for openvz?, I find information to do so and I have no knowledge to the bridge or what he has to do.

thanks in advance
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drescherjm · Posted: Mon Sep 21, 2009 2:38 am Post subject:

Using a bridge with openvz is not necessary. In the 5 or so HW nodes I have only 2 of them are using a bridge.

However I can tell you one area you may run into trouble. The default script that initializes the network for gentoo does not work or at least not as expected.

Here is part of my /etc/vz/200.conf file that I have on the machine I am typing from:

marksteven · n00b Joined: 21 Sep 2009 Posts: 3

Hi,
Kernel module
First of all, check that vznetdev module is loaded:

# lsmod | grep vznetdev

If it is not, load the module:

# modprobe vznetdev

You might want to check /etc/init.d/vz script to make sure the module gets loaded during startup.
Adding IP address to a container

vzctl set <CTID> --ipadd <IP1>[,<IP2>,...] [--save]

Note: This option is incremental, so IP addresses are added to already existing ones.
Example

vzctl set 101 --ipadd 10.0.0.1 --save

After executing this command IP address 10.0.0.1 will be added to container 101 and IP configuration will be saved to a container configuration file.
Removing IP address from a container

vzctl set <CTID> --ipdel <IP1>[,<IP2>,...] [--save]
vzctl set <CTID> --ipdel all [--save]

Example

vzctl set 101 --ipdel 10.0.0.1

After executing this command IP address 10.0.0.1 will be removed from container 101, but IP configuration will not be changed in container config file. And after container reboot IP address 10.0.0.1 will be assigned to this container again.
Thanks for sharing this information.
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fetes des meres

Theasker · Posted: Tue Sep 22, 2009 8:16 pm Post subject:

drescherjm · Posted: Tue Sep 22, 2009 8:20 pm Post subject:

Do the following and post the output:

Theasker · Posted: Tue Sep 22, 2009 9:10 pm Post subject:

drescherjm · Posted: Tue Sep 22, 2009 9:17 pm Post subject:

Looks fine.

On the HN (hardware node) edit the /etc/ssh/sshd_config so that the listen address is just the ip address of the host.

Then restart sshd on the HN and guest.

So on my HN

drescherjm · Posted: Tue Sep 22, 2009 9:23 pm Post subject:

BTW, here is what I have for my kernel config

Theasker · Posted: Tue Sep 22, 2009 9:23 pm Post subject:

Theasker · Posted: Tue Sep 22, 2009 9:26 pm Post subject:

drescherjm · Posted: Tue Sep 22, 2009 9:44 pm Post subject:

I am not sure of this issue. I can definitely ping from the guest:

Theasker · Posted: Wed Sep 23, 2009 8:59 am Post subject:

ok, It's disabled