RE: [qmailtoaster] Re: Security

[Phil Leinhauser]

Done:
http://wiki.qmailtoaster.org/index.php/VMware#Snapshots

-----Original Message-----
From: news [mailto:n...@ger.gmane.org] On Behalf Of Eric Shubert
Sent: Monday, February 08, 2010 6:14 PM
To: qmailtoaster-list@qmailtoaster.com
Subject: [qmailtoaster] Re: Security

Cool. I'd say write it up, but you just did. Can pretty much 
copy-n-paste it to the wiki! :)

Phil Leinhauser wrote:
> You don't run with a snapshot in the background.  However, before you do 
> any upates, you take a snapshot then perform your updates.  If the 
> updates run ok then ou delete the snapshot and you're back to normal.  
> If the updates blowup, you revert the snapshot and you're back to the 
> way you we before the updates.  
> 
> The way snapshots work is when you take a snap, it stops writes to the 
> VMDK and starts writing all changes to a *snapshot.vmdk file.  That is 
> ALL changes get written forward with NO deletes.  Now you see where the 
> rub is, that file GROWS!!  The sooner you get out of the snapshot the 
> better.  When you "delete" the snapshot, all the changes are written to 
> the original VMDK and the snapshot file is removed.  If you "revert" te 
> snapshot, it just deletes that file and opens writes to the original VMDK.
> 
> before I do any QMT updates I snapshot the machine.  So far I have not 
> had to revert so I delete andhave none of the nasty overhead.
> 
> I see another VM wiki topic...
> 
> 
>  > Great for development, but I'm not sold on them for production hosts. I
>  > haven't actually used them at all, but my understanding is that
>  > performance suffers. Much like using an overlay filesystem.
>  >
>  > Phil Leinhauser wrote:
>  >> Aren't snapshots GREAT!!!
>  >>
>  >> BTW: For anyone using VM with Windows domain controllers, DO NOT
>  >> snapshot DCs! Very bad juju happens when the old version comes back.
>  >>
>  >> > To many more conflicts,
>  >> > Not worth the bother, glad I tested on a VM, just restore to a
>  >> previous
>  >> > snapshot.
>  >> >
>  >> >
>  >> >
>  >> > sysadmin wrote:
>  >> >> I am looking at installing ,
>  >> >> Atomic Secured Linux,
>  >> >> On my Qmail-toaster box ( VM )
>  >> >>
>  >> >> On installation I get, a conflict with the already installed
version
>  >> >> of Clam AV,.
>  >> >> can I just use rpm -e to remove ClamAV, as you would any other
Linux
>  >> >> Version, or will it " break " the qmail install ( done with ISO
>  >> install
>  >> >> )
>  >> >>
>  >> >> Thanks
>  >> >>
>  >> >>
>  >> >>
>  >> 
>
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> 
>  >> >>
>  >> >> Qmailtoaster is sponsored by Vickers Consulting Group
>  >> >> (www.vickersconsulting.com)
>  >> >> Vickers Consulting Group offers Qmailtoaster support and
>  >> >> installations.
>  >> >> If you need professional help with your setup, contact them today!
>  >> >>
>  >> 
>
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> 
>  >> >>
>  >> >> Please visit qmailtoaster.com for the latest news, updates, and
>  >> >> packages.
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>  >> >>
>  >> >>
>  >> >>
>  >> >>
>  >> >
>  >> >
>  >> >
>  >> 
>
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> 
>  >
>  > --
>  > -Eric 'shubes'
>  >
>  >
>  > 
>
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> 
>  > Qmailtoaster is sponsored by Vickers Consulting Group
>  > (www.vickersconsulting.com)
>  > Vickers Consulting Group offers Qmailtoaster support and
>  > installations.
>  > If you need professional help with your setup, contact them today!
>  >


-- 
-Eric 'shubes'


----------------------------------------------------------------------------
-----
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    Vickers Consulting Group offers Qmailtoaster support and installations.
      If you need professional help with your setup, contact them today!
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---------------------------------------------------------------------------------
Qmailtoaster is sponsored by Vickers Consulting Group 
(www.vickersconsulting.com)
    Vickers Consulting Group offers Qmailtoaster support and installations.
      If you need professional help with your setup, contact them today!
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