[Users] OpenVZ on EL6 - weird network issue

[Narcis Garcia]

www.openvswitch.org



El 28/12/14 a les 00:27, Pavel Odintsov ha escrit:
> Hello!
> 
> You can read this ticket
> https://bugzilla.openvz.org/show_bug.cgi?id=2896 and can find all
> answer there.
> 
> On Sun, Dec 28, 2014 at 1:18 AM, Michael Stauber <mstauber at blueonyx.it> wrote:
>> Hi Pavel,
>>
>>> Did you tried open-v-switch instead standard Linux bridges?
>>
>> I actually wasn't aware of that one before you mentioned it.
>>
>> I'm just starting to read the docs and specs of it and it looks indeed
>> very interesting.
>>
>> Do you by chance have any specific pointers or docs how to set it up for
>> usage with OpenVZ? I'm willing to give it a shot, but with these client
>> systems I can't afford much in the way of experimenting. Taking the
>> bridge stack apart and replacing it with something else might be a
>> little too extreme, but I'll consider it as last resort. In any case I'd
>> like to avoid the usual beginner mistakes one could make when switching
>> to open-v-switch, so any tips and hints (or URLs to reading material)
>> would be appreciated.
>>
>> As for Scott's suggestion with a cronjob with arp-seeds:
>>
>> I did some digging and the network related shell scripts of OpenVZ are
>> quite enlightening there:
>>
>> /etc/sysconfig/network-scripts/ifup-venet
>> /usr/libexec/vzctl/scripts/vps-functions
>>
>> It appears that if I set up a cronjob that periodically runs ...
>>
>> /etc/sysconfig/network-scripts/ifup-venet
>> /etc/sysconfig/network-scripts/ifcfg-br0
>>
>> ... then it'll handle the arp-seeds as well via the function vzarp() as
>> provided by /usr/libexec/vzctl/scripts/vps-functions.
>>
>> I tried it on a test box and it didn't appear to have any negative
>> impact. Some debugging lines thrown in by me also showed me the exact
>> commands that these scripts use to do the arp-seeds. I can work with that.
>>
>> I'll implement that on the three affected nodes and will see if it helps.
>>
>> --
>> With best regards
>>
>> Michael Stauber
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> 
> 
>