If you don’t know what PuppetDB is, this post probably will not be any useful to you. But if you wanna find out or learn about it, here is the link: http://docs.puppetlabs.com/puppetdb/latest/index.html. For PuppetDB to work, we need to generate SSL certificates from a Puppet master’s SSL certificate. In my case, I need to re-configure this PuppetDB to a new Puppet mater which sits on the same server. Here’s how it was done: ...

If you get this error message on a FreeBSD host, you may need to reinstall p5-XML-Parser. # portmaster textproc/p5-XML-Parser

I know Fedora 19 is officially released tomorrow; but if you can’t wait to upgrade your machine to the latest release like me, here is the command to do it: $ sudo fedup --network 19 One thing I noticed after the upgrade is that, the bottom status bar can’t be found when you hit the system key. The good news is it’s still there; you just need to hit system key + m to have it showed up.

When you install CentOS 6 using minimal CD, a lot of packages aren’t installed by default; cron included. To install it, # yum install cronie After the installation, you can verify that crond is running: # chkconfig --list crond crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off

ផាប់ភិត​ដាសបត ឈប់​ដើរ​ ហើយ​ pending tasks មាន​ប្រ​ហែល​ជាង ២០០០។ # ps -ef | grep job www-data 4799 1 0 14:07 ? 00:00:00 delayed_job.0_monitor www-data 4804 1 0 14:07 ? 00:00:00 delayed_job.1_monitor root 8300 31461 0 15:22 pts/0 00:00:00 grep job មិន​ដឹង​ថា​ជាមាន​វិធី​ល្អ​ សំរាប់​ជួសជុល​បញ្ហា​នេះទេ ប៉ុន្តែខ្ញុំ​អាច ប្រើវិធីដូចនេះ # cd /usr/share/puppet-dashboard/ # rake RAILS_ENV=production jobs:work អោយវារត់​ យ៉ាងយូរ​ បន្ទាប់​មក puppet-dashboard-worker ក៏ចាប់ផ្តើម​ដើរវិញ # ps -ef | grep job www-data 4799 1 0 14:07 ? 00:00:00 delayed_job.0_monitor www-data 4804 1 0 14:07 ? 00:00:00 delayed_job.1_monitor www-data 5089 1 24 14:15 ? 00:20:43 dashboard/delayed_job.0 www-data 5094 1 24 14:15 ? 00:20:45 dashboard/delayed_job.1 root 8570 31461 0 15:41 pts/0 00:00:00 grep job