Apache Mesos is a cluster manager that simplifies the complexity of running applications on a shared pool of servers. There are more and more applications/frameworks ported to mesos, for example: Hadoop mapreduce, Storm, Spark, Chronos and so on. However, from my humble opinion, there are still some ideas to lead...

I’m using Debian for years and glad to upgrade from Squeeze to Wheezy once it was been released. However, I noticed that ssh costs a lot of time to login to remote host from Debian Wheezy but much faster on my MacBook Air.

It is a great blog by jpetazzo describes how device-mapper used in docker and why it's hard to resize your docker image/container filesystem size.

Docker now is standing at the core part of cloud computing, and is deemed to be the next big technique of cloud computing, it’s changing the game.

After several weekends cook, finally I have my blog site up and running. It’s simple, small but to me it’s good enough to hosts my humble words.

Suddenly I realized I don’t understand scp though I have used Linux for about seven years, used scp frequently, shame of me.

So far I haven’t experienced with SELinux a lot since I’m a Debian user, not a fan of RHEL and its families. However, when I was working with RHEL 6.3 recently I found that setenforce 0 can’t disable SELinux at all.

When I was trying to print a Microsoft Office excel datasheet in libreoffice, I found that it doesn’t work as I expected. Generally speaking I expect all the lines and columns will go into a single page, however it in fact printed into 4 pages, 4 pieces.

OK, this is quite a small tip but maybe useful sometimes, for example, I got this when I was formatting a blog into 80 columns width.

zookeeper is a wildly used centralized service for distributed computing, it aims to handle many hard but common problems in distributed computing scenario, for example, leader election, configuration maintenance and etc. Below is what I understand how leader election works in zookeeper.