Rolf-Werner Eilert escribió:
> Noel schrieb:
>> Rolf-Werner Eilert wrote:
>>> [...]
>>> This is really a very good idea, but I see one more problem. From time 
>>> to time you will want to update software on the server. If you update 
>>> the software, some apps might write their data in another, new way and 
>>> users logging in to the other server after having worked with the 
>>> updated one might not be able to access their data anymore. Or even 
>>> worse, a new way of writing an .rc file might be corrupted if you start 
>>> the older version.
>>>
>>> How do you keep the two servers really up-to-date with EVERYTHING like 
>>> new apps and stuff?
>>>
>>> [...]
>>>
>>> Thanks for your comments.
>>>
>>> Rolf
>> Well, Chris Fanning has already given a good solution via Xen, but we 
>> used two different methods. At first times, we used to have two cheap 
>> servers with identical installations. Everytime we made an update on one 
>> server we did it in the other one too. It's very easy, but it isn't fast 
>> nor error-free.
>>
>> Actual solution in our case at EjerciciosResueltos use Subversion. 
>> Everything but the homes are under version control. Of course, that does 
>> NOT mean that every file is under version control, since files in, say, 
>> /usr/bin are controlled by the distro's package control system, and 
>> files in, say, /var/log must be machine-specific to allow us to get 
>> usage info, problems detectionand such. But it IS important to use svn 
>> to keep control of the installed packages. We used a nightly cron task 
>> to update the machine from the repository, and to update every 
>> configuration from SVN.
>>
> 
> 
> Yes, a nightly script was what I thought of first.
> 
> Thanks for the advice with svn. I'll try to find out more about it. 
> Maybe we try it this way, though the Xen solution Chris Fanning proposed 
> has its own special charme :-)
> 
> Regards
> 
> Rolf
> 

Some time ago I found an article about using svk to manage /etc like
this. It doesn't put .svn directories around like svn does.

Cheers,
Alex



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