similar to: How to remove column without downtime with ActiveRecord > 3.0?

We use Rails 2.3.5, MySQL, and WEBrick. ActiveRecord call ConnectionPool#checkout and create new connection to MySQL when receive a first HTTP request. At this time, register to connection pool its connection in ConnectionPool#checkout_new_connection. # http://github.com/rails/rails/blob/v2.3.5/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb#L181 #

> On 6 May 2018, at 8.46, Niels Kobsch?tzki <niels at kobschaetzki.net> wrote: > > Hi, > > I have a setup with several dovecot-servers (2.2.35) and I use dovecot > proxy. I upgraded one server to 2.3.1 and got the configs fixed so far > that it started again. But when I tried to add it into the proxying > again with "doveadm director add" I see the

Hello, I have an imap server with huge Maildirs and several users running dovecot 1.0.13, I need to migrate all the imap accounts to a new box which runs dovecot 1.1.4. The requisite is that need to do it with no downtime or minimal downtime possible, and totally transparent for end users. I have tried IMAP<-->IMAP syncing using a master user in both servers and imapsync, however due

Hi, I have a setup with several dovecot-servers (2.2.35) and I use dovecot proxy. I upgraded one server to 2.3.1 and got the configs fixed so far that it started again. But when I tried to add it into the proxying again with "doveadm director add" I see the following in the logfiles: May 6 07:19:30 host dovecot: director: Warning: Director xxx.xxx.xxx.176:9090/out disconnected us with

On 15 May 2018, at 12.06, Timo Sirainen <tss at iki.fi> wrote: > > If you look at .176's error log, do you see an error about "director_consistent_hashing settings differ between directors"? Have you set director_consistent_hashing=yes in the old directors? That is needed now, because the old non-consistent-hashing method is obsoleted. Unfortunately there's no easy

Hi, I''ve a model that is stored to the db, but just one of its atribbutes doesn''t have a corresponding column on the table (it is used just for a calculation and still requires validation). I''ve been succefull by doing what is explained in http://rails.techno-weenie.net/tip/2005/11/19/validate_your_forms_with_a_table_less_model But I get an error of a non-existent

LLVMers, llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists will be down. We are performing a server upgrade that will take some time, so I ask that you have patience. We will try to be as speedy as possible. Please let me

--GYkYyJI7bObpCn+O Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! Due to an unfortunate event [*] the main netfilter.org system had become unavailable from Aug 19 to Aug 22. =20 The long downtime was caused by the netfilter developer workshop, which distracted the netfilter developers from doing any system administration.

Dear LLVMers, The LLVM mailing lists will be down on December 18 at 2:00 pm and is expected to be back up around 2:30 pm. The full description from TSG is as follows: On Monday, December 18, 2006 starting at 2:00 pm, the server that hosts the Mailman mailing lists will be unavailable while we replace bad memory. During the hardware replacement, the Mailman web interface, archives,

Dear All, On Monday, March 17, the computer science building will have its cooling system turned off for maintenance. During that time, the offices and computer labs in the building may get warm, and as a consequence, we may need to power off machines. While I am hoping that down time will be unnecessary, we may need to power down llvm.org during the cooling outage. It is also possible

Just a reminder, LLVM.org will be going down in 1 hour. Thank you, Tanya On Jan 28, 2013, at 2:28 PM, Tanya Lattner <lattner at apple.com> wrote: > To be clear: > Friday, February 1, 2013 & Monday, February 4, 2013 > > On Jan 28, 2013, at 2:08 PM, Tanya Lattner <lattner at apple.com> wrote: > >> LLVMers, >> >> llvm.org will be down on 2/1

llvm.org is now down. I will notify you when it is back up. This will take several hours. -Tanya On Feb 1, 2013, at 9:05 PM, Tanya Lattner <lattner at apple.com> wrote: > Just a reminder, LLVM.org will be going down in 1 hour. > > Thank you, > Tanya > > On Jan 28, 2013, at 2:28 PM, Tanya Lattner <lattner at apple.com> wrote: > >> To be clear: >>

Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit unreliable at the moment (the hardware is showing its age). After

Hello, there will be a downtime of the mail and list server tomorrow evening from around 20:00 UTC and a few (hopefully) hours after that. This means that there will be no mail traffic at that time to and from centos.org domains. We need to move away mail from the current machine to a new machine, as our old mailserver is a bit unreliable at the moment (the hardware is showing its age). After

To be clear: Friday, February 1, 2013 & Monday, February 4, 2013 On Jan 28, 2013, at 2:08 PM, Tanya Lattner <lattner at apple.com> wrote: > LLVMers, > > llvm.org will be down on 2/1 (approximate hours 10pm PST - ?), and 2/4 (8am PST - ?). Email will be sent to the list before and after the downtime. During this time ALL services (svn, web, etc) except for the mailing lists

After a kernel update (but before rebooting) Is there a way to recompile Zap/Dahdi against the new kernel? My objective is to eliminate the additional downtime that occurs while recompiling/installing zap/dahdi after booting into the new kernel. Please correct me if I'm wrong: My understanding is that until you reboot (after a kernel update), recompiling zap/dahdi still compiles against

The following systems will be down this weekend for server rebuild: shorewall.net lists.shorewall.net www1.shorewall.net ftp1.shorewall.net rsync.shorewall.net cvs.shorewall.net This will affect: Shorewall site and archive search Mailing list archives Mailing lists CVS Primary DNS for shorewall.net I will start the rebuild on Saturday morning and hope to be done by Saturday

shorewall.net will be down for maintenance this evening beginning at 22:00 GMT. The downtime should be 15 minutes or less. -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

The Shorewall mirror hosted at the University of Texas at Austin was knocked offline due to a campus-wide power failure at approximately 0615 CST. The issue is now resolved. Downtime totaled a little over two hours. Apologies for the inconvenience. -- Nick F. Silkey 512.475.8284 Sysadmin / BOFH silkey@ece.utexas.edu Dept. of Electrical and Computer Engineering The

Hi all, gabe is currently running an old version of Debian on slowly dying hardware. This weekend (most likely starting Friday evening, UTC), I'll upgrade it to a newer release as well as moving it to a VM. This will take some hours, and since it's vaguely complex, I'm marking the whole weeked as ?maintenance?, so it'll come and go a little bit. Most visibly affected service is