I have to say it has been a very long time since something on the web has impressed me to the point of being amazed. But today I found out about SUSE Studio.
SUSE Studio allows you to build/create your own Linux distribution based on SUSE linux.
“Build an appliance — or your own custom Linux distro — with a few mouse clicks. Customize it to your heart’s content, and share it with the world!”
I have been having a problem with my redundant PostgreSQL setup over the last couple of weeks. I run two Postgres servers with a WAL Logging Warm Standby system using pg_standby from 8.3. When the master server is under heavy load and generating a lot of WAL traffic the secondary server has been tripping and going active.
After checking all the logs and putting pg_standby in debug mode there was still no clue as to why this was happening.
I have a Ubuntu Virtual Server handling all my mail, recently after an apt-get upgrade I was unable to send email using my Postfix Virtual User setup through Courier and SASL.
I kept getting the following error in my logs:
Aug 18 07:53:53 marvin postfix/smtpd[23938]: warning: SASL authentication failure: cannot connect to Courier authdaemond: No such file or directory Aug 18 07:53:53 marvin postfix/smtpd[23938]: warning: localhost[127.0.0.1]: SASL LOGIN authentication failed: generic failure
After consulting with Google for at least an hour i finally hit upon a page that helped me.
Linode provides a convenient XML data feed that provides information about your CPU usage and Network Usage. The graph for the CPU Usage seems a little useless, but I have included it here as the XML feed provides the data.
You will need your linode account number to use the graphs, you can find this number by looking at the graphs provided to you in your Linode account management interface. The title of the graph will be “http://www.linode.com/ – yourhostname (linode12345) – CPU – …….”. You will need the text from inside the ( ) for your username ie linode12345.
I recently wrote a three part article on using Autoyast to automate the installation of OpenSUSE machines. I this article I will show you how to setup a local software update repository as well.