SUSE Linux Enterprise Serve 12 Trial Experience

SUSE Linux Enterprise Serve 12 Trial Experience

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We all know that Germany's Mercedes-Benz, BMW, Bus-type is famous for its exquisite, reliable and durable, but also from the German hand of the SUSE Linux, even the acquisition is an excellent Linux distribution, Currently SuSE is the only company to offer IBM mainframe Linux operating systems with enterprise-ready and commercial support features optimized for the IBM System Z architecture, making the installation process easy. It is also easy to deploy SAP and Oracle applications on the SUSE platform. On the October 28 of this year, Suse Enterprise Server 12 (SLEs 12) was released in the 11 release 4 years later, after several improvements, a more mature, stable system came out. I got a beta version of SLEs 12 (3.12 kernel) This March and, after trial, finally decided to upgrade some of the servers running SLEs 10+SP4 in the company. Let's share the experience of this system with you.

First Step: System deployment

Here we use the local CD-ROM installation, the first is to load the system installation disk in the CD-ROM drive, when the computer is turned back to choose to boot from the CD-ROM, so we will enter the following interface:

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After entering the installation Start menu, we select the second item "Installation" (install).

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Press the F3 key to adjust the video mode.

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By pressing the F4 key, you can choose to install via DVD, hard disk, or network (FTP, HTTP, NFS, SMB, etc.), and the Network Config button can be configured for a network installation.

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When it is initialized according to your own situation, the following is the official installation.

If there are more than 10 workstations that need to be deployed, then the interaction is definitely time-consuming to install, and there are several options that can be installed to minimize user interaction.

? Simple Remote Installation via VNC static/dynamic Network configuration

? Remote Installation via VNC-PXE boot

? Configuring Remote Installation via ssh-network

? Using Autoyast to create mature rules and level frameworks

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Enter the following in the Boot Options section of the System boot interface:

Install=http://192.168.1.1/suse/sles12/autoyast=http://192.168.1.1/suse/autoyast/host.xml

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When the input is complete, press ENTER to start the boot program in a micro-kernel.

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After a period of time, the following Welcome screen appears, we select "Simplified Chinese" in the Language Options box.

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After selecting the Language box, click Next. The System Detection page appears. This is to check the system and media.

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Registration is important here, if there is no registration system will not be able to upgrade and support services through the SuSE site. If it is a test, it does not affect.

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Below, to begin installing additional product and driver updates, SUSE Linux Enterprise Server 12 supports installing additional products to provide extensions (such as SUSE Linux Enterprise High Availability Extension), Third-party products and drivers or additional software. For example: Suse Linux Enterprise High Availability Extension is an innovative cluster suite and it is easier to configure a cluster than on a redhat system. Suse Linux Enterprise Mono Extension it is a. NET Development framework based on open source Mono technology that allows you to easily develop. NET-based Microsoft server applications on Linux.

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The next important step is to create the partition, the system will give you a suggested partition by default, you can also modify it yourself. Suse Linux supports hardware RAID devices and software RAID devices. If you use a hardware RAID device, you do not need to use a software RAID device.

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Select the clock and time zone. Just select the default time zone.

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Next Sync Time

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Next stage, the system will pop up to create a new user page

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This step selects the installation software, firewall settings and other content.

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As an example of installing software, we can customize the installed packages.

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Select OK, and the installation starts below.

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Step Two Basic Applications

Select "SLES12" in the system startup item and press ENTER. Can start normally, the following is a brief description of the startup options.

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The second is to start the Advanced line selection can customize the startup parameters, the third is the Virtualization boot option, Red Hat Linux, although the abandonment of Xen Hypersisor, SuSE has been using Xen, attention to the reason is stable. The continuation of Xen in this latest version shows that Xen does not decline, and it continues to flourish. The fourth item is the Advanced Virtualization startup option, and the fifth is the system snapshot recovery option.

Note : A system snapshot is a write-time replication technique used to monitor changes to blocks of existing volumes so that when a write is performed to one of the blocks, the value of this chunk when taking a snapshot can be copied to the snapshot volume. Not the entire system generates snapshots, and some directories do not generate snapshots, such as/Var,/tmp/,/var/crash/,/var/log/,/var/tmp. You can manage it with the following command: #yast2 snapper

After a period of loading process, the previous Green login interface, or a dark gray-based interface, appears very calm. At this point we enter the SUSE Linux login interface and the system waits for the user name and password to be entered. 650) this.width=650; "title=" clip_image047 "style=" border-top:0px;border-right:0px;background-image:none; border-bottom:0px;padding-top:0px;padding-left:0px;margin:0px;border-left:0px;padding-right:0px; "border=" 0 "alt = "clip_image047" src= "http://img1.51cto.com/attachment/201410/30/350944_1414680617odvb.jpg" height= "331"/>

After logging in, I found that I was familiar with the green desktop environment, clean and brief.

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In the YaST control Center, users (administrators) can set up software, network services, network devices, systems, virtualization, hardware, etc. as needed.

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Let's look at the multi-window switching effect

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Window switch (shortcut key: ALT + TAB), more infinite exciting to wait for the Linux users to discover and experiment.

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The package Manager in the SUSE Linux system provides a number of "packages" that users can use to install, uninstall, and update the appropriate applications with the Software manager. Provides "available" "Upgrade" "Installed" three modes, allowing users to view the package management at a glance.

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The biggest change is the addition of a new file system-btrfs, which has the greatest advantage of a writable disk snapshot (snapshots), a recursive snapshot (snapshots of snapshots), a built-in disk array support, and allows the file system size to be resized online. And these are the previous EXT3/4 Suobu support.

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Enhanced XINETD Service Configuration Tool

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The full name of XINETD is extended Internet Services Daemon, which is often used to manage a variety of lightweight Internet services, such as FTP, POP3, IMAP, and so on, where xinetd is powerful and can log logs for managed processes. You can also combine tcp_wrapper to secure your managed services. A powerful network manager Wicked is also available.

This version adds a better integration of Active Directory (active directories).

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Virtualized Installation in the 12 version of the system, the virtualization is also a sufficient effort. The following table is the maximum number of hardware supported per virtual machine.

SLES virtual Machines	Maximum limit
Maximum number of virtual machines per host	64 X
How much CPU per virtual machine is recognized	64GB
Maximum memory recognized by each virtual machine	Gib x86_32, Gib x86_64

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After the installation is complete, the system starts with a "Sles12,with Xen hypervisor" entry in the System boot menu item, indicating that SUSE Linux system virtualization is already installed.

New Virtual machine

Entering the YaST control Center, we can see in the virtualization options that there are altogether 4 options: Create virtual machine, install hypervisor and tools, virtual Machine Manager, transfer server configuration. At this point we click on Create virtual Machine Check creat virtual machines for Xen and KVM icon, will pop up as:

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Add Xen super-management programs and tools

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System snapshot and rollback settings

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Security Center : helps administrators to centrally reflect and configure system security issues.

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Note : There are a number of questions about the version that are unclear, and here's an explanation that openSUSE is a community-maintained version of Kaiyuan, similar to Fedora, which contains software that is newer than the server version. SuSE Enterprise Edition is divided into two versions, one is SLEs (SUSE Linux Enterprise Server Edition) and the other is sled (SUSE Linux Enterprise Desktop version)

This article is from the "Lee Chenguang Original Technology blog" blog, please be sure to keep this source http://chenguang.blog.51cto.com/350944/1569897

SUSE Linux Enterprise Serve 12 Trial Experience