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gateway - route [message #14960]

Sun, 15 July 2007 04:12

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

Ok.. I'm doing something really wrong. I figured I probably accidentally skipped through the man, but I've read a few times and can't figure it out.

I've created a VE no problem, but I have no idea how to add a gateway. I can add the IP, and nameservers no problem using vzctl set VEID, but there is no option for the gateway?

I don't want the host node to be the gateway I want my regular gateway IP on the router to be assigned to each VE. How do I add it to the VE?

Thanks

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Re: gateway - route [message #14967 is a reply to message #14960]

Sun, 15 July 2007 16:46

rickb
Messages: 368
Registered: October 2006

Senior Member

GW is handled by the HN, the VE has no control over it. The HN's routing table determines how the VE connects with the net. Do a search for source based routing as this is likely the answer to your next question.

-------------
Common Terms I post with: http://wiki.openvz.org/Category:Definitions

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Re: gateway - route [message #14968 is a reply to message #14967]

Sun, 15 July 2007 17:11

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

Thanks,

I did a search, but it looks like source based routing is more guided towards using different gateways for different VE? am I wrong to assume that?

Is the VE supposed to have this routing:

[root@host06 vz]# vzctl exec 100 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 venet0
[root@host06 vz]#

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Re: gateway - route [message #14972 is a reply to message #14967]

Mon, 16 July 2007 01:11

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

In case this helps, I've got Network unreachable error as follows:

[root@host06 ~]# vzctl set 601 --ipadd xxx.yyy.247.151 --save
Adding IP address(es): xxx.yyy.247.151
SIOCADDRT: Network is unreachable
Configure meminfo: 49152
Saved parameters for VE 601
[root@host06 ~]#

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Re: gateway - route [message #14985 is a reply to message #14960]

Mon, 16 July 2007 08:32

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

Hello,

As I can conclude you use venet device (it is handled by vzctl set <veid> --ipadd command). venet device is like a point to point conection between VE and HN:

                                          _______
                                         /       \
_____  venet         venet _____   eth  /  YOUR   \
VE101|---------------------|HN |------- |          \ 
                                         \ NETWORK /
                                           ---------

So, HN must forward packets from and to VE if you want your VE to be able to reach other computers in your network.

Routing is set automatically on HN and in VE by vzctl while --ipadd command.

HTH,
Vasily.

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Re: gateway - route [message #15005 is a reply to message #14985]

Mon, 16 July 2007 14:13

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

--ipadd does not work properly. As you can see from my --ipadd command there is a subnetmask error it looks like:

[root@host06 ~]# vzctl set 601 --ipadd xxx.yyy.247.151 --save
Adding IP address(es): xxx.yyy.247.151
SIOCADDRT: Network is unreachable
Configure meminfo: 49152
Saved parameters for VE 601
[root@host06 ~]#

Any ideas? Can I do something like --ipadd xxx.yyy.247.151 --netmask 255.255.255.128 ?

Thanks in advance!

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Re: gateway - route [message #15007 is a reply to message #15005]

Mon, 16 July 2007 14:50

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

I've just wrote you, that venet - is point-to-point protocol, so netmask is not important in this case.

What template do you use for your VE?
What is your vzctl version?

Thanks,
Vasily.

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Re: gateway - route [message #15011 is a reply to message #14960]

Mon, 16 July 2007 19:13

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

VZCTL version 3.0.18 on a HN running CentOS 5

I've tried template w/ CentoS-4-i386-minimal, and default. I've also tried fedora-core-5

Thanks Again!

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Re: gateway - route [message #15056 is a reply to message #15007]

Tue, 17 July 2007 19:07

taylorhgh
Messages: 7
Registered: July 2007

Junior Member

Do you think it's possible it's only doing that because it's CentOS 5?

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