| /etc/hosts [message #8925] |
Mon, 11 December 2006 11:53  |
Farkas Levente
Messages: 2
Registered: December 2006
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Junior Member |
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hi,
why put openvz into each VE's /etc/hosts the hostname itself too? ie:
127.0.0.1 host.example.com host localhost localhost.localdomain
and why do this on all reboot, why not accept
127.0.0.1 localhost localhost.localdomain
it has some reasons?
thanks.
yours.
--
Levente "Si vis pacem para bellum!"
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| Re: /etc/hosts [message #8992 is a reply to message #8930] |
Tue, 12 December 2006 14:51  |
dev
Messages: 1693
Registered: September 2005
Location: Moscow
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Senior Member |
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> Kirill Korotaev wrote:
>
>>Farkas Levente wrote:
>>
>>>hi,
>>>why put openvz into each VE's /etc/hosts the hostname itself too? ie:
>>>127.0.0.1 host.example.com host localhost localhost.localdomain
>>>and why do this on all reboot, why not accept
>>>127.0.0.1 localhost localhost.localdomain
>>>it has some reasons?
>>>thanks.
>>>yours.
>>>
>>
>>If HOSTNAME set in VE config it is updated on every VE start.
>>hostname is bound to 127.0.0.1 for simplicity of updates on ip change i.e
>>it doesn't depend on ip in such a scheme.
>
>
> ok, but in this case all tool like netstat, iptables etc.. assumes
> 127.0.0.1 as hostname and it's really annoying netstat -lt:
> ------------------------------
> # netstat -lt
> tcp 0 0 host.example.com:smtp *:* LISTEN
> tcp 0 0 host.example.com:smtp *:* LISTEN
> # netstat -ltn
> tcp 0 0 127.0.0.1:smtp *:* LISTEN
> tcp 0 0 1.2.3.4:smtp *:* LISTEN
> ------------------------------
Ah, I see...
There are 2 easy choices here:
- change your VE /etc/hosts and add a "real-IP hostname" line to it.
vzctl will notice it and will stop changing it.
actually one manage hostnames itself from VE this way.
- fix vzctl to add such lines, however, it is harder,
since will require /etc/hosts modification on each ipadd/ipdel/hostname-change
etc. and it is not clear how to leave the ability to manage /etc/hosts from inside VE.
Thanks,
Kirill
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