On 14/01/2021 13:24, Martin Gregorie wrote:
> On Thu, 14 Jan 2021 06:36:06 +1300, Richard Falken wrote:
>
>> Re: Re: My darn NAS...
>>    By: The Natural Philosopher to Chris Green on Thu Jan 14 2021 11:06 am
>>
>>   > depends on what you want. I rsync huge amounts of data. Disk space is
>>   > cheap. Recovering from data loss is not, Working out what is
>>   > important and what is not is even more expensive.
>>   >
>>   >
>> I agree with this position.
>>
>> I know that just backing up the data that is not easily reproductible
>> suffices,
>> in theory. However, if you only back the data up without the
>> applications and the OS stack, your recovery consits on a sysadmin
>> installing software for a week and swearing at his notebook.
>
> Theres a simple tweak that fixes most of that stuff: move /usr/local to
> /home local and replace it with a symlink to /home/local
>
> I've done the the equivalent with my (large) PostgreSQL databases and my
> local Apache- based website (by default these are in /var, so I changed
> their configurations to put these files in /home too.
>
> Everything continues to work as before but now I've secured almost all of
> my own work and customisation by backing up /home
>
> The only thing thats not safeguarded now is the contents of /etc, so
> either back that up along with /home or keep copies of everything in /etc
> that you've explicitly changed in, say, your normal home login. I do the
> latter but of course ymmv. Changes in /etc made by software updates don't
> need backing up because they'll be automatically reapplied when you're
> rebuilding the failed device that holds your filing system.
>
>
what about /var  that contains all the webs servers and Mysql databases
by default? /opt as well has stuff in it. /boot has grub configs





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