Want to create DC DR Mailbox server
Hello all , I require suggestion for building up the DC DR server. I want to build the Mailbox server with 5000 users , 1 TB size of total mailbox data. 1) DC and DR server will be in two different IDC , with internet connectivity or with dedicated pipe. 2) How to sync the every email ( add / delete / seen / unseen ... etc ) on the fly from DC to DR ? Please share if any have good URLs / Blog / wiki / howto steps information for implementing the above. 3) If point 2 have solution , then in case of drill if I point the LIVE IP from DC to DR and if all emails come on DR server for 1-2 days , then how to sync back that emails to DC again. 4) For syncing data back from DR to DC , Is there any method other that IMAPSYNC ? 5) Is it possible again on the fly syncing of emails from DR to DC ? 6) How other sysadmins are managing the Drill situation and DC to DR syncing ? Regards Jayesh Shinde Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: Want to create DC DR Mailbox server
On 08/22/2012 04:09 AM, jayesh shinde wrote: Hello all , I require suggestion for building up the DC DR server. I want to build the Mailbox server with 5000 users , 1 TB size of total mailbox data. 1) DC and DR server will be in two different IDC , with internet connectivity or with dedicated pipe. 2) How to sync the every email ( add / delete / seen / unseen ... etc ) on the fly from DC to DR ? Please share if any have good URLs / Blog / wiki / howto steps information for implementing the above. 3) If point 2 have solution , then in case of drill if I point the LIVE IP from DC to DR and if all emails come on DR server for 1-2 days , then how to sync back that emails to DC again. 4) For syncing data back from DR to DC , Is there any method other that IMAPSYNC ? 5) Is it possible again on the fly syncing of emails from DR to DC ? 6) How other sysadmins are managing the Drill situation and DC to DR syncing ? You can accomplish what you want using Cyrus replication. You can read about it here: http://www.cyrusimap.org/docs/cyrus-imapd/2.4.16/install-replication.php Note that all Cyrus gets you is a second copy of the data. You have to handle failover on your own by either swapping IP addresses and hostnames or munging mailboxes.db, etc. Thanks, Dave Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
4096 file descriptors
Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? Thanks, Ron Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, 22 Aug 2012, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? I've always done it in the cyrus init script: # Crank up the limits ulimit -n 209702 ulimit -u 4096 ulimit -c 102400 You may be able to set it in limits.conf (pam_limits), but I'm not sure if that applies when starting cyrus from the init script?? Andy Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, 2012-08-22 at 14:43 -0400, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 Yep The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd man pam_limits Is there a more generic/cleaner way to do this? Yep, you can setup a limits.conf file that adjusts limits per user, per group, etc... signature.asc Description: This is a digitally signed message part Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: 4096 file descriptors
On Wed, Aug 22, 2012, at 09:47 PM, Andrew Morgan wrote: On Wed, 22 Aug 2012, Ron Vachiyer wrote: Quick question about filedescriptors. On Centos6, cyrus 2.3.16 seems to be able to open 4096 FDs ; master[27121]: retrying with 4096 (current max) ulimit -a says 1024; open files (-n) 1024 I am looking to increase this, and have found some documentation saying to increse file-max in /proc. However, file-max already has a much larger number; cat /proc/sys/fs/file-max 1201105 The only way I have found so far is to add a ulimit -n 8192 in /etc/rc.d/init.d/cyrus-imapd Is there a more generic/cleaner way to do this? I've always done it in the cyrus init script: Us too. We run 400+ instances, so init script is magic perl, and it does ulimit before launching master. Bron. -- Bron Gondwana br...@fastmail.fm Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
