Re: High-Availability IMAP server

2005-09-29 Thread Wolfgang Powisch
Scott Adkins wrote: --On Monday, September 26, 2005 6:45 PM +0200 David <[EMAIL PROTECTED]> wrote: Hello, I have a 'pseudo' High Availability SMTP system consisting in two servers running cyrus 2.2.5. The main problem I have is that only one of the two nodes can access to the mailboxes i

Re: High-Availability IMAP server

2005-09-28 Thread brad
On Wed, 2005-09-28 at 13:45 -0400, Ken Murchison wrote: > I haven't tried it, but I've done nothing to purposely break replication > of virtdomains. I might give it a try and report back then. Thanks, -- Brad Crotchett, RHCE [EMAIL PROTECTED] Cyrus Home Page: http://asg.web.cmu.edu/cyr

Re: High-Availability IMAP server

2005-09-28 Thread Ken Murchison
David Carter wrote: On Wed, 28 Sep 2005, brad wrote: I read the documentation on replication and am interested in trying it. I have several servers that run a single domain, but are using virtdomain anyway. I would like to have one virtdomain replica server that serves as a hot spare to all

Re: High-Availability IMAP server

2005-09-28 Thread Ken Murchison
João Assad wrote: brad wrote: On Tue, 2005-09-27 at 08:51 +0800, Ow Mun Heng wrote: On Mon, 2005-09-26 at 10:03 -0700, Aaron Glenn wrote: On 9/26/05, David <[EMAIL PROTECTED]> wrote: Is there any way to achieve this goal using cyrus? Which is the best approach to this scenari

Re: High-Availability IMAP server

2005-09-28 Thread David Carter
On Wed, 28 Sep 2005, brad wrote: I read the documentation on replication and am interested in trying it. I have several servers that run a single domain, but are using virtdomain anyway. I would like to have one virtdomain replica server that serves as a hot spare to all of these servers. In

Re: High-Availability IMAP server

2005-09-28 Thread brad
On Wed, 2005-09-28 at 12:41 -0300, João Assad wrote: > > > I too am very interested in this replication solution. Where can I get > the src and documentation ? > > Regards, > > João Assad > This is a good start: http://www-uxsup.csx.cam.ac.uk/~dpc22/cyrus/replication.html Thanks, -- Bra

Re: High-Availability IMAP server

2005-09-28 Thread brad
On Wed, 2005-09-28 at 09:02 +0100, David Carter wrote: > We use the replication engine all the time to move users back and forth > between systems so that we can patch and upgrade operating systems and/or > Cyrus without any user visible downtime. I read the documentation on replication and am

Re: High-Availability IMAP server

2005-09-28 Thread João Assad
brad wrote: On Tue, 2005-09-27 at 08:51 +0800, Ow Mun Heng wrote: On Mon, 2005-09-26 at 10:03 -0700, Aaron Glenn wrote: On 9/26/05, David <[EMAIL PROTECTED]> wrote: Is there any way to achieve this goal using cyrus? Which is the best approach to this scenario? Run daily imapsync

Re: High-Availability IMAP server

2005-09-28 Thread brad
On Tue, 2005-09-27 at 08:51 +0800, Ow Mun Heng wrote: > On Mon, 2005-09-26 at 10:03 -0700, Aaron Glenn wrote: > > On 9/26/05, David <[EMAIL PROTECTED]> wrote: > > > Is there any way to achieve this goal using cyrus? Which is the best > > > approach > > > to this scenario? Run daily imapsync via cr

Re: High-Availability IMAP server

2005-09-28 Thread David Carter
On Tue, 27 Sep 2005, Patrick Radtke wrote: We made great use of it Monday morning when one of our backend machines failed. Switching to the replica was quite simple and relatively fast (maybe 5 to 10 minutes from deciding to switch to the replica before replica was fully in action) We use th

Re: High-Availability IMAP server

2005-09-27 Thread Patrick Radtke
We are running the replication code in production at Columbia. We made great use of it Monday morning when one of our backend machines failed. Switching to the replica was quite simple and relatively fast (maybe 5 to 10 minutes from deciding to switch to the replica before replica was fully

Re: High-Availability IMAP server

2005-09-27 Thread Ken Murchison
David Carter wrote: The complication is that there doesn't appear to be anyone left at CMU to release new versions of Cyrus at the moment. Poor Jeffrey Eaton seems to be the last man standing there. My own experience of running things single handed is that it doesn't leave much time for develo

Re: High-Availability IMAP server

2005-09-27 Thread David Carter
On Mon, 26 Sep 2005, Aaron Glenn wrote: There is replication code in the 2.3 branch; though from what I can tell it hasn't been touched in a few months and makes me wonder if it's being actively developed still. Nevertheless, in my exhaustive search for any and all information on IMAP replicat

Re: High-Availability IMAP server

2005-09-26 Thread Ow Mun Heng
On Mon, 2005-09-26 at 10:03 -0700, Aaron Glenn wrote: > On 9/26/05, David <[EMAIL PROTECTED]> wrote: > > Is there any way to achieve this goal using cyrus? Which is the best > > approach > > to this scenario? Run daily imapsync via cron and a Load Balancer forward > > the > > requests to the acti

Re: High-Availability IMAP server

2005-09-26 Thread John Madden
> Is there any way to achieve this goal using cyrus? Which is the best approach > to this scenario? Run daily imapsync via cron and a Load Balancer forward the > requests to the active one? Here's my approach: setup heartbeat with two ethernet heartbeats, shared storage (SAN), and pray a bunch tha

Re: High-Availability IMAP server

2005-09-26 Thread Scott Adkins
--On Monday, September 26, 2005 6:45 PM +0200 David <[EMAIL PROTECTED]> wrote: Hello, I have a 'pseudo' High Availability SMTP system consisting in two servers running cyrus 2.2.5. The main problem I have is that only one of the two nodes can access to the mailboxes in order to keep the integr

Re: High-Availability IMAP server

2005-09-26 Thread Aaron Glenn
On 9/26/05, David <[EMAIL PROTECTED]> wrote: > Is there any way to achieve this goal using cyrus? Which is the best approach > to this scenario? Run daily imapsync via cron and a Load Balancer forward the > requests to the active one? > > Any help would be appreciated. There is replication code in

High-Availability IMAP server

2005-09-26 Thread David
Hello, I have a 'pseudo' High Availability SMTP system consisting in two servers running cyrus 2.2.5. The main problem I have is that only one of the two nodes can access to the mailboxes in order to keep the integrity of the cyrus databases despite the filesystem (GFS) has support to allow to