lvs-dr with freebsd jailhost as realservers: resolved.

[Mike Bloom]

Hi,

The problem was that lvs-dr requires the vip to be bound to a lo0 on 
each of the jails, rather than just the jailhosts lo0 interface.

By applying a patch to the jail subsystem that allows multiple ip's 
(http://www.digitaldaemon.com/FreeBSD/FreeBSD/index.html)  I was able to 
run a jail with lo0 assigned the ip of the vip.

I hope this helps some other folks using freebsd jails, this one has 
stumped me for a few days.

M


Mike Bloom wrote:
> Hi,
>
> Joseph Mack NA3T wrote:
>> On Mon, 9 Apr 2007, Mike Bloom wrote:
>>
>>> ipvsadm has no trouble getting to my jailhosted webservers (these 
>>> two are both jailed)
>>
>> ipvsadm is a user interface to ip_vs(). It sets up routing tables. It 
>> doesn't "get to webservers".
>>
> My point was that there is no issue with ip_vs being able to reach the 
> webservers running on the jailhost.
>>> IP Virtual Server version 1.2.1 (size=4096)
>>> Prot LocalAddress:Port Scheduler Flags
>>> -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
>>> TCP  66.207.199.194:80 rr
>>> -> 66.207.199.213:80            Route   1      0          3
>>> -> 66.207.199.212:80            Route   1      0          3
>>
>> The InActConns usually means that your default route is not set 
>> properly for the realservers.
>>
>> I don't know whether the bsd jails are part of the problem
>> yet
>>
>> Joe
>>
>
> If you type in 66.207.199.213 or 66.207.199.212, you or anyone on the 
> internet can reach the webservers running in the jailhost, so I 
> suspect the default routes are working just fine.
>
> If it had been a default route issue, I wouldn't have been able to 
> generate traffic back to my origination ip as per the first tcpdump.
>
> Thanks for the suggestion though.
>
>
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