SUSE Linux Enterprise Server 12 Trial Experience
as we all know, Mercedes-Benz, BMW and other car models produced in Germany are famous for their delicacy, reliability and durability, while Suse Linux, which are also made by Germans, even if it is purchased, it is also an excellent Linux distribution. At present, Suse Cheng Weiwei a company that provides IBM large hosts with Linux operating systems with enterprise readiness and business support features, the IBM System z architecture is optimized to make the installation process very simple. In addition, it is very convenient to deploy SAP and Oracle applications on the Suse platform. In October 28 this year, four years after Suse Enterprise Server 12 (SLES 12 for short) was released in version 11, a more mature and stable system was released after many improvements. I got the Beta version of SLES 12(3.12 kernel) in March this year. After trial, I finally decided to upgrade some servers running SLES 10 + SP4 in the company. The following is the experience of this system.
Step 1: System Deployment
here, we use the local optical drive installation method. First, load the system installation disk into the optical drive, and select start from the optical drive when restarting the computer. In this way, we will enter the following interface:
after entering the Installation Start menu, we select the second "Installation" (Installation).
Press F3 to adjust the video mode.
After initialization, start the official installation.
If more than 10 workstations need to be deployed, it will take a lot of time for interaction to be manually installed. Several options that can be installed can minimize user interaction.
? Simple remote installation through VNC static/dynamic network configuration
? Remote Installation guided by VNC-PXE
? Remote Installation through SSH-network configuration
enter the following content in the Boot Options column of the system Guide interface:
after the input is completed, press the Enter key to install the system into a microkernel so as to guide the startup program.
After a period of time, the following Welcome page appears. In the Language box, select simplified Chinese ".
It is important to register here. If you do not register a system, you will not be able to upgrade and support services through the Suse site. If it is a test, it does not affect.
Next, install additional products and driver updates. SUSE Linux Enterprise Server 12 support installing additional products to provide extensions (such as SUSE Linux Enterprise High Availability Extension), third-party products and drivers or additional software. Example: Suse Linux Enterprise High Availability Extension, it is an innovative cluster suite and the process of configuring clusters is more convenient than on the Redhat system. Suse Linux Enterprise Mono Extension is a. NET development framework based on open-source Mono technology, which allows you to easily develop. net-based Microsoft server applications on Linux.
The next important step is to create a partition. The system will give you a recommended partition by default, and you can modify it yourself. Suse Linux supports hardware RAID devices and software RAID devices. If you use hardware RAID devices, you do not need to use software RAID devices.
Select the clock and time zone. Select the default time zone.
Next synchronization time
in the next phase, the Create User page appears.
For example, you can customize the software package to be installed.
After you select it, the installation starts.
Step 2 basic applications
select SLES12 from the system startup items and press enter. It can be started normally. The following is a brief description of the startup options.
The second item is Startup advanced line selection. You can customize startup parameters. The third item is virtualization startup options. Although Red Hat Linux has given up Xen hypersisor, Suse has been using Xen. Note that the reason is stable. Continue to use Xen in this latest version, indicating that Xen has not declined, otherwise it will continue to carry forward. The fourth is the advanced virtualization startup option, and the fifth is the system snapshot recovery option.
Small : a system snapshot is a write-time replication technology that monitors changes to data blocks of an existing volume. When a write operation is performed on one of the data blocks, the data block value can be copied to the snapshot volume when the snapshot is taken. Some directories do not generate snapshots, such as/var,/tmp/,/var/crash/,/var/log/, and/var/tmp. You can run the following command to manage it:#yast2 snapper
after a period of loading, the previous green login interface is still a dark gray interface, which looks very calm. At this point, we enter the SUSE Linux logon interface, and the system waits for the user name and password to be entered.
After logging in, I found that I was familiar with the Green desktop environment, clean and brief.
Let's take a look at the multi-window switching effect.
The software package manager in the SUSE Linux system provides many "software packages". Users can use the software manager to install, uninstall, and update corresponding applications. Provides three modes: available, upgraded, and installed, allowing users to manage software packages at a glance.
Speaking of the biggest change, that is increase brand new file system-BtrFS, this file system biggest advantage for writable disk snapshot (snapshots), recursive snapshot (snapshots of snapshots), the built-in disk array supports and allows online file system resizing, which was previously supported by ext3/4.
Enhanced Xinetd service configuration tool
the full name of Xinetd is extended Internet services daemon, which is often used to manage a variety Internet lightweight services, such as ftp, pop3, and imap. Xinetd is powerful and can record logs for managed processes, you can also use tcp_wrapper to protect managed services. It also provides powerful network management tools.
Better integration of "Active Directory" (Active Directory) has been added to this version.
Virtualization installation in in the 12 version of the system, great efforts have been made in virtualization. The following table lists the maximum number of hardware supported by each virtual machine.
after the installation is completed, a "SLES12,with Xen hypervisor" item is added to the system startup menu when the system is started, indicating that Suse linux system virtualization has been installed.
Create a virtual machine
enter the YaST control center. In the virtualization options, you can see that there are four options: creating a virtual machine, installing administrative programs and tools, Virtual Machine Manager, and transferring server configurations. Click the icon selected to create Creat Virtual Machines for Xen and KVM Virtual machine. The following figure appears:
add Xen super management programs and tools
system Snapshot and rollback settings
There are still many powerful tools. You can study them when you are free. Finally, we will talk about after-sales services. If you buy a genuine suite, you can get up to 13 years of service time. Finally, due to the limitation of space, the introduction of this system is temporarily here.
Small : many people are not clear about the version. Here we will explain that openSuSe is the original version of community maintenance, similar to Fedora, which contains newer software than the server version. SuSE Enterprise Edition has two versions: SLES(Suse Linux Enterprise Server Server edition) and SLED(Suse Linux Enterprise Desktop Desktop edition).
Download ISO now and start installation
experience the system installation process immediately
this article is forwarded from Li Chenguang 51CTO blog, original link: http://blog.51cto.com/chenguang/1569897 , if you need to reprint, please contact the original author.