Slash Dot Dash » Linux http://www.slashdotdash.net Rolling on Rails Wed, 18 Mar 2009 22:03:19 +0000 en hourly 1 http://wordpress.org/?v=3.0 Problem with openssl with Ruby 1.8.6 on Ubuntu Fesity 7.04 http://www.slashdotdash.net/2007/06/27/problem-with-openssl-with-ruby-1-8-6-on-ubuntu-fesity-7-04/ http://www.slashdotdash.net/2007/06/27/problem-with-openssl-with-ruby-1-8-6-on-ubuntu-fesity-7-04/#comments Wed, 27 Jun 2007 22:40:00 +0000 Ben Just fixed an issue with openssl not working correctly with Ruby 1.8.6 (installed from source) on Ubuntu Feisty (server).

$ cat /etc/issue
Ubuntu 7.04

After deploying a new Rails application I restarted mongrel but all requests were returning errors (500); the production.log indicated the following issue:

no such file to load -- openssl

To rectify this I had to do the following.

$ sudo apt-get install libopenssl-ruby
$ sudo apt-get install libssl0.9.8

$ cd ~/src/ruby-1.8.6/ext/openssl
$ ruby extconf.rb
$ make
$ sudo make install

To test that openssl is working correctly use irb:

irb(main):001:0> require 'openssl'
=> true

References

  • http://linuxbrit.co.uk/rbot/ticket/69
  • http://www.ruby-forum.com/topic/90083
]]> http://www.slashdotdash.net/2007/06/27/problem-with-openssl-with-ruby-1-8-6-on-ubuntu-fesity-7-04/feed/ 4 Typo and Rails / MySql problems http://www.slashdotdash.net/2006/11/09/typo-and-rails-mysql-problems/ http://www.slashdotdash.net/2006/11/09/typo-and-rails-mysql-problems/#comments Thu, 09 Nov 2006 08:18:44 +0000 Ben The blog is back up again (also moved to the root of the domain) – and hopefully running quicker now thanks to a quick change of hosting setup (Apache and fcgi to pound proxying to mongrel_cluster).

One quick note to anyone experiencing the following problem with Typo running on Debian Linux:

Lost connection to MySQL server during query

The recommended ‘fix’ is to gem install mysql. Doing that on a Debian machine will result in numerous errors unless you also do the following:

$ apt-get install libmysqlclient10-dev
$ gem install mysql

(Thanks to the owner of this blog for the pointer, found via google).

]]> http://www.slashdotdash.net/2006/11/09/typo-and-rails-mysql-problems/feed/ 0 Debian package management with APT – remove unused packages http://www.slashdotdash.net/2006/09/18/debian-package-management-with-apt-remove-unused-packages/ http://www.slashdotdash.net/2006/09/18/debian-package-management-with-apt-remove-unused-packages/#comments Mon, 18 Sep 2006 18:40:18 +0000 Ben /var/cache/apt/archives can build up a lot of cruft…

Clear out package files no longer available:

apt-get autoclean

Clear out all downloaded package files:

apt-get clean
]]> http://www.slashdotdash.net/2006/09/18/debian-package-management-with-apt-remove-unused-packages/feed/ 3 Repairing a RAID5 software array (Debian Linux) http://www.slashdotdash.net/2006/04/12/repairing-a-raid5-software-array-debian-linux/ http://www.slashdotdash.net/2006/04/12/repairing-a-raid5-software-array-debian-linux/#comments Wed, 12 Apr 2006 20:35:00 +0000 Ben RAID5 software arrays in Linux are very simple to setup and should run smoothly. Inevitably something will go wrong – but luckily that’s why we use RAID5 – there should be no data loss.

Software RAID HOWTO is the best reference.

Check the RAID

Identify the problematic disk [UU_]

mdadm --detail /dev/md0
cat /proc/mdstat

Remove failed disk

mdadm /dev/md0 -r /dev/hdg1

Add new disk

mdadm /dev/md0 -a /dev/hdg1

Once rebuilding has started you can check the status via /proc/mdstat (depending on the array size it may take quite a long time).

cat /proc/mdstat
Personalities : [raid5]
md0 : active raid5 hdg1[3] hdc1[0] hde1[1]
      488391680 blocks level 5, 128k chunk, algorithm 2 [3/2] [UU_]
      [>....................]  recovery =  0.8% (2098944/244195840) finish=205.3min speed=19648K/sec
unused devices: <none>
]]> http://www.slashdotdash.net/2006/04/12/repairing-a-raid5-software-array-debian-linux/feed/ 1