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think seem to be harder and harder ....
i just want to balance my web board...
but it look interesting here if you would draw the chat so we all can
understand more.
Thanksss :-)
Pongsit C
> Date: Sat, 3 Jun 2000 22:17:13 +0200
> From: Nicolas Huillard <nhuillard@xxxxxx>
> To: "lvs-users@xxxxxxxxxxxxxxxxxxxxxx" <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
> Subject: RE: Network Block Device w/ RAID for Content Replication (Was: Re:
> load
balance web site)
>
> Your setup seems very interesting.
> Just one question below...
>
> -----Message d'origine-----
> De: Atif Ghaffar [SMTP:atif@xxxxxxxxxxxx]
> Date: samedi 3 juin 2000 15:23
> À: Andi Hechtbauer
> Cc: tc lewis; Joseph Mack; pu@xxxxxxxxxx; lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> Objet: Re: Network Block Device w/ RAID for Content Replication (Was:
> Re: load
balance web site)
>
> ...
> There are 6 frontend servers that are running apache, php3 modperl etc.
> each with 2 9 gb disk.
> the first 9gb disk is for system (/boot, / etc)
> the second 9gb disk is /www this disk is running software raid 1
> with the nbd that is mounted from the main file servers.
>
> [Nicolas Huillard] I don't understand how the frontend server's second disk
> are
managed :
> * do they see a RAID 1 array (can you remind me what is RAID 1 ?) with a
> local 9GB
SCSI disk and a distant nbd disk ? In this case, the back-end servers will have
to
manage 6 disk for the 6 front-ends ?
> * or is it the back-ends that have a RAID array, consisting on a local disk
> and 6
distant nbd disks (one for each front-end), in order for them to see the
content, read-
only, on their local disk ?
>
> Last question : how do you manage MySQL fail-over between the two back-ends ?
>
> TIA,
>
> Nicolas Huillard
>
>
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Pongsit Chittaowat
pongsit@xxxxxxxxxxxx
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