All posts filed under “Linux

Where most of the things run.

comment 0

Don’t MAZE Yourself. Logically Label your disks for ZFS Pools

Being a sysadmin can be overwhelming. I was working on a 0.5 Petabyte system which was set up on a JBOD ZFS System. Some of the disks have failed. The previous sysadmin did an awesome(sarcastic) job in naming things. In a hurry to bring up the system online, he forgot to label anything. Neither physically nor logically. There is no way to track down the hard drive that has failed. Unless I hire student workers to physically pull down each drive and compare the serial number. Imagine, 0.5 petabytes, 1.5 petabytes raw storage, and 4 terabytes hard drives. Do the math.’ Don’t trap…

comment 0

Jails in Open Suse. ‘chroot’

What is chroot? A chroot is a way of isolating applications from the rest of your system by jailing them in a particular directory. The idea lies in changing the apparent root directory for the current running process and its children. A program running in such a modified environment cannot access files outside the designated directory tree. However, the reverse is possible. Uses and Advantages. A test environment can be set up in the chroot for software that would otherwise be too risky to deploy on a production system. Software can be developed, built and tested in a chroot populated…

comment 0

Hello World ;)

What goes into a blog post? Helpful, industry-specific content that: 1) gives readers a useful takeaway, and 2) shows you’re an industry expert. Use your company’s blog posts to opine on current industry topics, humanize your company, and show how your products and services can help people. class Hello { public static void main(String[] args) { System.out.println(“Hello World”); } } class Hello { public static void main(String[] args) { System.out.println(“Hello World”); } }