SUSE Linux Enterprise Serve 12 trial experience, suseserve

SUSE Linux Enterprise Serve 12 trial experience, suseserve

SUSE Linux Enterprise Serve 12 trial

We all know that German models such as Mercedes-Benz and BMW are exquisite, reliable, and durable. Suse Linux, also from the hands of Germans, suse is the only company that provides enterprise-ready and commercial support for IBM large hosts, the IBM System z architecture has been optimized to simplify the installation process. In addition, it is very convenient to deploy SAP and Oracle Applications on The Suse platform. In October 28 this year, Suse Enterprise Server 12 (SLES 12 for short) was released four years after the release of version 11. After several improvements, a more mature and stable system was released. In March this year, I got the Beta version of SLES 12 (3.12 kernel). After trial, I finally decided to upgrade all the servers running SLES 10 + SP4 in the company. We will share the experience of this system with you.

Step 1: system deployment

Here we use the local optical drive installation method. First, we need to load the system installation disk to the optical drive, and choose to start from the optical drive when the computer is re-turned on, so that we will enter the following interface:

After entering the Installation Start menu, select "Installation ).

 

Press the F3 key to adjust the video mode.

Press the F4 key to select whether to install through a DVD, hard disk, or Network (FTP, HTTP, NFS, SMB, and other installation methods), and select the Network Config button to configure the Network, for network installation.

After the initialization is completed according to your own situation, the installation will begin.

If more than 10 workstations need to be deployed, it will take a lot of time for manual installation. There are several executable installation options that can minimize user interaction.

Simple Remote Installation through VNC static/dynamic network configuration

Remote Installation via VNC-PXE boot

Remote Installation through SSH-Network Configuration

Here, AutoYaST is used to create mature rules and level frameworks.

Enter the following content in the Boot Options column of the system Boot interface:

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

After the input is complete, press enter to start installing a microkernel to boot the Startup Program.

After a while, the following welcome page appears. In the Language option box, select "simplified Chinese ".

After selecting the language box, click Next. The system detection page appears. This is to check the system and media.

Registration here is important. If you do not have a registration system, you cannot use the Suse site to upgrade, support, and other services. If it is a test, it will not be affected.

Next, start to install additional products and driver updates. SUSE Linux Enterprise Server 12 supports the installation of 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 clusters than on the Redhat system. Suse Linux Enterprise Mono Extension is a. NET development framework based on open-source Mono technology. It allows you to conveniently develop. net-based Microsoft Server Applications on Linux.

The next important step is to create a partition. By default, the system will give you a suggested partition. You can also modify it on your own. 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.

Select the clock and time zone. You only need to select the default time zone.

Next synchronization time

In the next stage, the create user page is displayed.

In this step, select the software installation and firewall settings.

Take installing software as an example. We can customize the installed software package.

After the selection, the installation will start.

Step 2 Basic Application

Select "SLES12" in the system startup Item and press the Enter key. It can be started normally. The following describes the startup options.

The second is to enable the advanced line selection to customize the startup parameters, and the third is the virtualization startup option. Although Red Hat Linux has abandoned Xen hypersisor, Suse has been using Xen for a long time. Note that the cause is stability. In this latest version, Xen has not declined, but will continue to grow. Item 4 is the advanced virtualization startup option, and item 5 is the System Snapshot recovery option.

Note: A System Snapshot is a write-time Replication Technique used to monitor changes to the data blocks of an existing volume and perform write operations on one of the data blocks, the value of this data block when taking a snapshot can be copied to the snapshot volume. Instead of generating snapshots for the entire system, some directories do not generate snapshots, such as/var,/tmp/,/var/crash/,/var/log/, And/var/tmp. You can use the following command to manage it:

# Yast2 snapper

After a period of loading, the previous Green logon interface is still a dark gray-based interface. In this case, we enter the SUSE Linux logon interface, and the system is waiting to enter the user name and password.

After logging on, you will find that you are back to the familiar green desktop environment, clean and brief introduction.

In the YasT control center, users (administrators) can set software, network services, network devices, systems, virtualization, and hardware as needed, which is very convenient.

Next let's take a look at the Multi-Window switching effect.

Window switching (shortcut key: ALT + Tab), more exciting, but also waiting for Linux users to discover and experiment.

The Software Package Manager in SUSE Linux provides many "software packages". You can use the software manager to install, uninstall, and update applications. The "available", "Upgrade", and "installed" modes are provided, allowing you to manage software packages at a glance.

The biggest change is the addition of a new file system-BtrFS, which has the greatest advantages of snapshots and recursive snapshots) built-in disk arrays support and allow online file system size adjustment, which were 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 of lightweight Internet services, such as ftp, pop3, and imap. Here, Xinetd is powerful and can be used to record logs for management processes, you can also use tcp_wrapper to protect the security of managed services. Wicked, a powerful network management tool, is also provided.

This version adds better integration of "Active Directory.

Virtualization is installed in the 12 version of the system, and virtualization is also enough effort. The following table shows the maximum number of hardware supported by each virtual machine.

SLES 12 Virtual Machine	Maximum limit
Maximum number of VMS per host	64
How many CPUs are identified by each Virtual Machine	64 GB
Maximum memory recognized by each Virtual Machine	16 GiB x86_32, 512 GiB x86_64

After the installation is complete, a "SLES12, with Xen hypervisor" item is added to the System Startup menu, indicating that Suse linux Virtualization has been installed.

Create a VM

Go to the YaST control center. In the virtualization options, we can see four options: create a virtual machine, install administrative programs and tools, virtual machine manager, and transfer server configuration. Click the Creat Virtual Machines for Xen and KVM icon to create a VM. The following figure is displayed:

Add Xen hyperadministrative programs and tools

System Snapshot and rollback settings

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

 

There are still a lot of powerful tools. If you have time to study and finally talk about after-sales services, if you buy a genuine suite, you can get up to 13 years of service time. Finally, Due to space limitations, the introduction to this system is now here.

Note:: Many people are not clear about the version. Here I will explain that openSuSe is the original version of community maintenance. It is similar to Fedora, and the software contained in it will be newer than the server version. SuSE Enterprise Edition is divided into two versions: SLES (Suse Linux Enterprise Server Edition) and SLED (Suse Linux Enterprise Desktop edition)

Download ISO now to start Installation

How to install qq in SUSE Linux Enterprise Server 10 SP2 (i586)-Kernel \ r (\ l)

Because the gtk version of SLES is too low, if a large number of upgrade operations are required for qq, it is not necessary to use vbox virtual windows.

If it is a non-critical server or a desktop server, we recommend that you upgrade it to SLED 11.

SUSE Linux Enterprise Desktop 11

Source code of all software packages

Suse team
Reference: zhidao.baidu.com/team/view/SUSE