Tag Archives: Solaris

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MySQL 5.1 in OpenSolaris

If you’ve attended just one of my recent talks, either at the UC, LOSUG or MySQL University, you should know that MySQL 5.1.30 will be in the next official drop of OpenSolaris.

In fact, you can find MySQL 5.1 in the current pre-release builds – I just download build 111 of the future 2009.06 release.

Key things about the new MySQL 5.1 in OpenSolaris:

  1. Contains the set of DTRACE probes that also exists in MySQL 5.4 (see DTrace Documentation)
  2. Like the 5.0, we have SMF integration, so you can start, stop, monitor and change some of the core configuration through SMF
  3. Directory layout is similar to 5.0, with a version specific directory (/usr/mysql/5.1), and the two can coexist if you want to handle a migration from 5.0 to 5.1

To install MySQL 5.1, use the pkg tool to perform the installation. We’ve split the components into three packages:

  1. SUNWmysql51 contains the server and client binaries, and associated scripts.
  2. SUNWmysql51libs contains the client libraries, which you’ll need for all external (i.e. MySQL) tools, like DBD::mysql for Perl connectivity)
  3. SUNWmysql51test contains the MySQL test suite

To install:

$ pfexec pkg install SUNWmysql51

Once installed, you can start MySQL server through SMF:

$ pfexec svcadm enable mysql:version_51

You can set properties, like the data directory, by using svccfg:

$ svccfg
svc:> select mysql:version_51
svc:/application/database/mysql:version_51> setprop mysql/data=/data0/mysql
svc:/application/database/mysql:version_51> setprop mysql/enable_64bit=1

Any questions, please ask!

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Speaking at CommunityOne West

Sorry for the (relatively) short notice, but I will be talking at Sun’s CommunityOne conference in San Francisco on June 1st.

I’ll be talking about, and demonstrating, the DTrace probes we have put into MySQL in a joint presentation with Robert Lor who will be doing the same for Postgres.

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CommunityOne West Badge

Our presentation is on the Monday afternoon.

Check out the CommunityOne West Conference Site for more details and registration.

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Solaris 10 Boot Failure

OK, so this has now bitten me twice on a new install.

Basically, put Solaris 10u5 on certain machines, and it will work fine until you edit the /etc/vfstab and forget to add a terminating newline to one of your entries.

Upon reboot you will get something like this:

Error: svc:/system/filesystem/root:default failed to mount /boot (see 'svcs -x' for details)
[ system/filesystem/root:default failed fatally (see 'svcs -x' for details) ]
Requesting System Maintenance Mode
Console login service(s) cannot run

At the top of the output from svcs, you’ll see:

svc:/system/filesystem/root:default (root file system mount)
Reason: Start method exited with $SMF_EXIT_ERR_FATAL
see: http://sun.com/msg/SMF-8000-KS
see: /etc/svc/volatile/system-filesystem-root:default.log
Impact: 44 dependent services are not running. (use -v for list.)

The problem is that missing newline, which means the mount table is never parsed correctly.

To fix, enter your root password to get into admin mode. You’ll need to first remount the root fs as read/write:

# mount -orw,remount

And then add that offending missing line end:

# echo >>/etc/vfstab

Be careful with that second line; miss a > symbol and you’ll wipe out your vfstab altogether.

Now reboot, and things should be back to normal.

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MySQL University: MySQL and ZFS

I didn’t announce it last week, but I did a MySQL University presentation on using MySQL with the ZFS filesystem. ZFS is the main filesystem for Solaris/OpenSolaris and offers a number of different benefits for people using MySQL, including some improvements to the ease of use, management, and performance of the storage you use with your MySQL database.

You can get the presentation, and the recordings of the presentation, from the appropriate MySQL University page: MySQL and ZFS.