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Hi,

On the morning (UTC) of December 6th we will perform general maintenance[0] on all servers. Services will be affected as follows:

Service | Expected impact -----------------------------+------------------------------------- Entire platform | As described in maintenance schedule[0] JIRA, MediaWiki, FishEye | Under 30 minutes outage for each service | during upgrade

Start time: Monday, 6th December, 12AM UTC End time: Monday, 6th December, 8AM UTC (estimated)

Details:

This is a schedule general maintenance, which we use for various non-critical tasks. The expected outages are as described in the maintenance schedule[0].

Most of the changes for this maintenance are in the local TS software, /opt/ts; all software will be upgraded to the latest version, and some minor changes will be made. The full list of upgrades, including Perl modules, is available here: https://wiki.toolserver.org/view/Admin:Pending_maintenance_tasks

The following changes will also be made:

* Mono will now install directly in /opt/ts instead of /opt/ts/mono/2.0. If you call "mono" without an absolute path, this will not affect you. If you currently call "/opt/ts/mono/2.0/bin/mono", you should change this to remove the full path before the maintenance.

* The preferred OpenSSL is now /opt/ts/bin/{amd64,}/openssl, which is OpenSSL 1.0.0b instead of /usr/sfw/bin/{amd64,}/openssl (0.9.7d). This should not affect users, but if you currently call the version in /usr/sfw with a full path, you may wish to remove the path so you automatically use our version, which is better.

We will additionally make some changes to how the software is compiled; if you have compiled your own C or C++ programs, this will affect you, and you should read the section "Changes to ts-specs environment" below. If you do not have any locally-compiled software, this change will not affect you.

During the maintenance, some software may not work correctly (e.g. programs or libraries not found).

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JIRA, FishEye, MediaWiki and phpMyAdmin will also be upgraded.

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The default Python version will change from 2.6 to 2.7. If you currently use /usr/bin/python, this change will happen for you automatically. If you use /usr/bin/python2.6 explicitly, you will need to change to /usr/bin/python2.7 to use the new Python.

If you have programs which don't work under Python 2.7, you should a) report this in JIRA, and b) switch to /usr/bin/python2.6 before the maintenance. If there are no problems with Python 2.7, we will remove Python 2.6 from the system during the next maintenance (January 2011).

We will patch Python 2.7 to revert the fix for bug 1054943[1], which introduced a regression affecting Unicode normalisation[2][3].

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The default "gcc" will become GCC 4.5.1, rather than 3.4.3. This may affect you if you build locally-installed Perl modules, especially if these modules use C++ code. This is described in more detail below.

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Changes to ts-specs environment ===============================

This section only applies to users with locally-compiled C or C++ software.

The new version of ts-specs (/opt/ts) installed during the maintenance has switched the default compiler from Sun Studio to GCC 4.5.1. This is described in more detail at [4]. In brief:

* You should change from your current compiler (Studio, GCC 3.4.3 or GCC 4.4) to GCC 4.5.1, /opt/ts/bin/gcc. * If you recompile any Studio- or GCC 3.4.3-compiled C++ code with the new compiler, you need to recompile all of it, because the ABIs are not compatible. * GCC 3.4.3 will no longer be installed. * If you use Studio-compiled versions of C++ libraries in /opt/ts/<lib>/<version>/, you should change to the GCC version in /opt/ts/<lib>/<version>-gcc/.

The following libraries require special handling:

* Studio-compiled versions of MySQL++ and VIPS were previously installed in /opt/ts/lib. If you use these libraries, you should switch to the version that we will install in /opt/ts/<lib> (where <lib> is "mysqlpp" or "vips"). The Studio-compiled version will remain available for now. * Studio-compiled versions of ImageMagick, sigc++ and cairomm are currently installed in /opt/ts. They will be replaced with GCC-compiled versions in the same path, and Studio-compiled versions will not be available. If this adversely affects you (because you use these libraries and need time to migrate), you should let us know before the maintenance.

[0] https://wiki.toolserver.org/view/Maintenance_schedule [1] http://bugs.python.org/issue1054943 [2] http://bugs.python.org/issue10254 [3] http://lists.wikimedia.org/pipermail/toolserver-l/2010-November/003633.html [4] http://lists.wikimedia.org/pipermail/toolserver-announce/2010-November/00036...