The first time I used vi was in a college programming course. It was the
default editor on the computer lab’s UNIX systems we used to compile our
assignments. I remember when our professor first introduced vi and
explained that you used the hjkl keys to move your cursor around instead of
the arrow keys. more>>
With Hiera, you can externalize your systems’ configuration data and
easily understand how those values are assigned to your servers. With
that data separated from your Puppet code, you then can encrypt sensitive
values, such as passwords and keys.
…than to understand Linux permissions! Honestly though, that’s
not really true. Linux permissions are simple and elegant, and once you
understand them, they’re easy to work with. Octal notation gets a little funky,
but even that makes sense once you understand why it exists.
Users and Groups:
Every linux adminsitrator knows this problem: You have a very, really very big file like a great MySQL dump and now you need to cut a small part from it, like the create table definition of one single table. It is quiet simple to find the line numbers that you want to cut from the […]