Re[2]: [gentoo-user] Re: Web server mirror

[Sergey A. Kobzar]

Thursday, April 9, 2009, 12:09:57 AM, Momesso wrote:

> On Wed, Apr 08, 2009 at 11:06:24PM +0300, Nikos Chantziaras wrote:
>> Momesso Andrea wrote:
>>> I'm not a professional admin, but I run a web server that was supposed
>>> to be a small system for a couple of users (my wife and her students),
>>> and now became something bigger with some amount of traffic, and some
>>> people rely on it for critical data.
>>> Since the scope of the site changed I'd like to add some extra security.
>>> As now all I have are dayly snapshot backup of the server hard disk on
>>> an external disk and weekly I move one of those snapshot on a disk that
>>> I store off site and is used only for this scope.
>>> In the same lan I also run another machine that I use as a home server
>>> for personal purpose.
>>> I'd like to keep a mirror of all the webapps running on the main server
>>> in this machine for two puroposes:
>>> 1) Have a backup working site, so that if something goes wrong, in the
>>> time I reinstall from backup, fix hardware or wathever, I can redirect
>>> the traffic on the salve machine (possibly in read only mode).
>>
>> Put them both behind a NAT.  When one goes down, you NAT the port to the
>> other machine.
>>

> Ok, nice suggestion.

Use CARP (HSRP) - it's better solution IMHO and does not require
manual work in emergency.

http://www.linux.com/feature/35482


>>> 2) Keeping a copy of the working site on a virtual host in the other
>>> machine allows the admin (my wife) to test new stuff, change things, add
>>> modules, without putting in danger the main site.
>>
>> rsync the main machine to the second machine.  You can rsync specific
>> folders.  If your website is in /var/www of the first machine, you can
>> rsync that to the /var/www of the second for example.
>>
>>> What I ask is some advice on best practice to achieve the needed result;
>>> I suppose that all I need is to rsync the webserver directory in a
>>> virtual server on the slave machine and to dump the databases, but I'm
>>> not sure this will be enough.
>>
>> rsync does the mirroring, NAT does the redirection of traffic.  Those are
>> the tools used by most to achieve what you described.
>>
> Ok, but what about databases? Joomla has his own and mediawiki too...
> Just dump it and copy it? Will it work?

If this is MySQL, use dump/restore. This should be enough.


> ---
> TopperH
> http://topperh.blogspot.com



-- 
Sergey