Linux system administrator skills

undergoing change How long ago was the last time you compiled the kernel? The answer for the new generation of Linux administrators is simple: I haven't compiled the kernel at all. I have never compiled a kernel, of course, I don’t care about playing it myself. I really can't think of me as I need to customize the kernel, so I use my "out of the box" kernel.
Linux Old birds may laugh at us, but you can't deny that as more and more companies adopt Linux, the new generation of Linux administrators will have a very good technical strength, but they lack the compiler kernel. There is a gap between a simple but basic skill and a good Linux administrator. We can build a high-performance, highly available web infrastructure with cutting-edge technology, but don't let us fix an unbootable Linux machine —— we would recommend you throw it and change it to a new one. virtual machine.

in the past decade there have been many interesting thing: Linux not only becomes a commodity, and release its endless stream of increasingly powerful and flexible. Today, a normal system administrator does not have to master the underlying skills of compiling the kernel.
Then, we witnessed the commercialization of virtual machine technology. Users using Amazon Cloud Hosting or VPS may never have to deploy Linux on bare metal. With the increasing popularity of hybrid and private clouds, even many enterprise-level system administrators do not need to deploy Linux&mdash on bare metal; — log in to the web management interface to get more than five Apache virtual machines at a time.
The latest two trends: one is configuration management, the other looks very cutting edge (in fact, not at the forefront) —— deployment tools like docker, which hide more Linux underlying technical details . Whenever a customer asks us to configure a Linux machine on OlinData, our first action is to set up Puppet. With the powerful and trusted Puppet module, manual configuration is faster and easier.
For example, I can use Puppet to install Apache on a new machine like this:
node 'web01.olindata.com' {
include apache
apache::vhost{ 'www.olindata.com':