There is no difference between AS and es in most packages, but only in a few software packages such as the kernel.
The prices of As and elasticsearch vary greatly. Generally, elasticsearch is used in the OEM version purchased with the server. For example, if you purchase a Dell server, the elasticsearch Linux will be used with elasticsearch. If you want to match the as series, you need to spend thousands more.
WS is a further simplified version of ES. It is mainly used in the desktop office market in China. You need to release your ownSource code. The paid Enterprise Linux series is a commercial product. Therefore, you cannot download ISO files to your website. You must purchase an official license. Enterprise Linux must also follow the GNU protocol, so the source must be released.
These files can be freely downloaded, modified, and re-compiled. A project named community enterprise operating system was born. The abbreviation is centos.
CentosCommunityDownload all the source code on the RedHat website and recompile it. For example, after compiling the original srpm source code of as4, it becomes centos 4. After the source code of as4update1 is compiled, it becomes centos4. In the same way, CentOS 3.
The GPL is the software license used by the Linux kernel. The feature of the GPL is: if you use other people's code to modify it, you must publish the modified code.
All Linux is licensed under the GPL. The GPL license allows GPL software to be sold for money, but the source code must be published, so the code of each Linux distribution is fully public, but the person who uses the code must also publicly modify it. So some people began to think of establishing the CentOS project. Since the source code of Redhat is public, the people of the CentOS project take it and compile it by themselves.
The same code and the same compiler will naturally compile the same thing. Up2date update is connected to Redhat. For fee-paying service sites, the service code purchased with money is certified.
There are many users of CentOS, because many people around the world want to use Redhat but are troubled by Redhat's charging services. In terms of quality, CentOS should theoretically be the same as Redhat, after all, it is the same source code. All small commands such as ls and cd are developed by their own project team. The Linux distribution is actually to download a Linux kernel, download GNU Coreutils including commonly used core small commands , and customize it yourself system.
You should remember that I compiled a system manually a few days ago. Many people who like BSDL mainly because they believe that as long as the code can be used to the greatest extent, it is the best, unlike GPL, the code has to be paid back. So many network equipment and some commercial companies sponsor the development of FreeBSD, which is a completely free software project: freebsdfoundation. The difference and connection between Centos and Redhat.
The difference between the syntax of java and python What is the difference between python and pycharm What is the difference between synchronous and asynchronous Python? The above 6 points are enough to explain CentOS. The difference between CentOS and Ubuntu. The difference between python2. First understanding of the difference between centos7 and centos6 kernel, commands, etc. The difference between the syntax of java and python.
The user can use the GUI or the command line interface to perform tasks using Linux. What is Oracle Linux — Definition, Functionality 2. Oracle Linux is also called Oracle Enterprise Linux. They can build applications, deploy and distribute them without cost.
Even though Red Hat freely provides the source code, it restricts free re-distribution of their officially supported versions of Red Hat Enterprise Linux.
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