Re: internet services - server farm

2003-10-15 Thread Oren Held
Hi,

It'll probably work, but this is pretty ugly. I'd be using two seperate
log files.

- Oren

> - Original Message - 
> From: "Oren Held" <[EMAIL PROTECTED]>
> To: "Ben-Nes Michael" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Tuesday, October 14, 2003 1:38 AM
> Subject: Re: internet services - server farm
> 
> 
> > Hi,
> >
> > I don't see why it should be problematic, if each daemon accesses its
> > own files and there are no collisions.. (you know, NFS is designed for
> > MULTIPLE clients accessing it) - unless you mean to run two apaches at
> > the same time using the same log file, for example? but why to do that?
> 
> There is a good reason why to use two apache servers, an its load balance.
> I can use eddie to direct trafic to more then one web server, see
> http://eddie.sourceforge.net/
> 
> Can this work or two servers writing to the same file will not work ?


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Re: internet services - server farm

2003-10-14 Thread Ben-Nes Michael
- Original Message - 
From: "Oren Held" <[EMAIL PROTECTED]>
To: "Ben-Nes Michael" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, October 14, 2003 1:38 AM
Subject: Re: internet services - server farm


> Hi,
>
> I don't see why it should be problematic, if each daemon accesses its
> own files and there are no collisions.. (you know, NFS is designed for
> MULTIPLE clients accessing it) - unless you mean to run two apaches at
> the same time using the same log file, for example? but why to do that?

There is a good reason why to use two apache servers, an its load balance.
I can use eddie to direct trafic to more then one web server, see
http://eddie.sourceforge.net/

Can this work or two servers writing to the same file will not work ?

>
> You can use heartbeat (http://www.linux-ha.org) to make the servers
> monitor each other and when one is down to do a failover and take its
> resources (i.e. run apache and become the web server instead of the one
> which just died).
>
> Note that your suggested configuration doesn't sound too good, because
> you have a SINGLE nfs server, which is a potential SPOF (Single Point of
> Failure) - if it'll die, your whole 'server farm' would die.
> (There are many ways - not all are good ofcourse - to have a highly
> available NFS server as well, try to get some info in www.linux-ha.org.
>
> On Mon, 2003-10-13 at 18:43, Ben-Nes Michael wrote:
> > Hi All & Chag Sameah
> >
> > in September I read an interesting thread about "live website
mirroring".
> > The thread also spoke about method to use two parallel systems against
one
> > source of data using NAS, Mirroring, ...
> >
> > I want to do something similar, I want to put one fileserver and connect
all
> > other servers to him ( mail, web, backup ) using NFS.
> >
> > I also want all apache mail whatever logs, configuration files  to
be
> > stored on the fileserver.
> >
> > Can it work ? or I can expect lock problems or what ever.
> >
> > Cheers


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Re: internet services - server farm

2003-10-13 Thread Oren Held
Hi,

I don't see why it should be problematic, if each daemon accesses its
own files and there are no collisions.. (you know, NFS is designed for
MULTIPLE clients accessing it) - unless you mean to run two apaches at
the same time using the same log file, for example? but why to do that?

You can use heartbeat (http://www.linux-ha.org) to make the servers
monitor each other and when one is down to do a failover and take its
resources (i.e. run apache and become the web server instead of the one
which just died).

Note that your suggested configuration doesn't sound too good, because
you have a SINGLE nfs server, which is a potential SPOF (Single Point of
Failure) - if it'll die, your whole 'server farm' would die.
(There are many ways - not all are good ofcourse - to have a highly
available NFS server as well, try to get some info in www.linux-ha.org.

On Mon, 2003-10-13 at 18:43, Ben-Nes Michael wrote:
> Hi All & Chag Sameah
> 
> in September I read an interesting thread about "live website mirroring".
> The thread also spoke about method to use two parallel systems against one
> source of data using NAS, Mirroring, ...
> 
> I want to do something similar, I want to put one fileserver and connect all
> other servers to him ( mail, web, backup ) using NFS.
> 
> I also want all apache mail whatever logs, configuration files  to be
> stored on the fileserver.
> 
> Can it work ? or I can expect lock problems or what ever.
> 
> Cheers
> --
> Canaan Surfing Ltd.
> Internet Service Providers
> Ben-Nes Michael - Manager
> Tel: 972-4-6991122
> Fax: 972-4-6990098
> http://www.canaan.net.il
> --
> 
> 
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> To unsubscribe, send mail to [EMAIL PROTECTED] with
> the word "unsubscribe" in the message body, e.g., run the command
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> 
> 


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internet services - server farm

2003-10-13 Thread Ben-Nes Michael
Hi All & Chag Sameah

in September I read an interesting thread about "live website mirroring".
The thread also spoke about method to use two parallel systems against one
source of data using NAS, Mirroring, ...

I want to do something similar, I want to put one fileserver and connect all
other servers to him ( mail, web, backup ) using NFS.

I also want all apache mail whatever logs, configuration files  to be
stored on the fileserver.

Can it work ? or I can expect lock problems or what ever.

Cheers
--
Canaan Surfing Ltd.
Internet Service Providers
Ben-Nes Michael - Manager
Tel: 972-4-6991122
Fax: 972-4-6990098
http://www.canaan.net.il
--


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