Shulou(Shulou.com)06/02 Report--

Advantages of the operating system (Linux)

1) mature technology and high reliability

2) strong scalability to identify the hardware information of many manufacturers

3) powerful network function

4) support the deployment of many database programs

5) powerful development function

Second, the development history of operating system

1969 Unix Bell Laboratories

1986 Professor Minix Tan Bangning

1986 similar to uinx Stallman

Goal: GNU project-to create a unix-like system

Company: FSF Free Software Foundation

Rule: GPL General license Agreement

1) all code information must be open source

2) the code can be modified and must be explained

Results: software (editing software query log) interpreter (bash = = shell) kernel The Hurd (not well developed)

1991 Kernel Torvac (University of Finland student)

GNU+ kernel = = linux

III. Selection of operating system version

Ubantu ubuntu Desktop Domain (graphical Interface) Development

Red Hat redhat server field (fee) state-owned enterprises and foreign enterprises

Centos server area (free) Internet sector *

Debian server domain (security) financial domain

SUSE server domain (network server) to realize network function

Fredora test operating system

New software development-- Fredora (adjustment)-- released-- new version of redhat-new version of centos

IV. Operating system installation process

1) deployment and installation of virtual environment

What does virtual environment mean:

Virtual multiple real system environments, which can make full use of hardware resources.

It can save physical space.

How to deploy virtual environment

The first course: need to install virtual software

Windows: vmware workstation 15 (paid version-with snapshot-moonlight box)

Problem: windows10 checks the vmware version, and if it does not meet the requirements, it will prompt you to download vmware player (free version)

Mac OS: vmware fusion

The second course: software installation and configuration process: problem 1: computer bios needs to be adjusted Let the computer support the virtualization function to boot-- > F1 F2 F10 F11 F12-- > bios-- > Virtualization Settings (Security interface cpu interface configuration interface) question 2: need to enable virtual printing function editing-> preferences-> device-> enable virtual printing function virtual host creation: step omit system digits: 64 bits System (x86 / 64 architecture): identify memory can exceed 4G 32-bit system (i386 architecture): identify memory can only be 4G at most

2) operating system installation and deployment (centos 7.6-1810)

The first course: download the system image file

Download the new version of the system: https://developer.aliyun.com/mirror

Old system download: http://vault.centos.org/

The second course: loading system image files

The third course: install and deploy the operating system

Install centos7-install centos7 system

Test this media & install Centos7-Test the CD media and install the system

Troubleshooting-system repair

1) modify the name of the Nic (eth0)

Select install centos7-- tab-enter net.ifnames=0 biosdevname=0

2) system network and host name configuration

Address: 10.0.0.200 Mask 255.255.255.0 Gateway 10.0.0.254

3) system disk partition

Zoning method 1: general zoning method:

/ boot partition is similar to system partition, boot partition 200m

Swap partition swap partition (hard disk space-swap-> memory usage)

Memory = 8G swap partition size = 8G

/ remaining space in the zone

Partition method 2: data important partition method: / boot partition is similar to system partition Boot partition 200m swap partition swap partition (hard disk space-swap-> memory usage) memory = 8g swap partition size = 8G / partition 20G~500G / data remaining space partition mode 3: flexible partition scheme / boot partition similar to system partition Boot partition 200m swap partition swap partition (hard disk space-swap-> memory usage) memory = 8G swap partition size = 8G / partition 20G~500G 40G undivided

4) system pre-installed software

Centos7: minimize 1236

Centos6: minimize 235

5) set root user password

Password information: 123456

Operating system network configuration

1) configure the network in the graphical interface

Nmtui-enter the graphical configuration interface of the system network

Network address: address information where you live

Network mask: limit how many hosts can be in an area

Gateway information: from one area to another

PS: after all configuration changes in the linux system, the service must be restarted

Systemctl (system system ctl-control control)-system control command, control management service program (stop opening restart)

Systemctl restart network

Check Test: ip address show2) configure the network vi in the file-similar to notepad Open and edit file vi / etc/sysconfig/network-scripts/ifcfg-eth0 name information: name device address information: 10.0.0.200 mask information: 255.255.255.0 gateway information: 10.0.0.254 network card status: onboot=yes vi editing command basic usage: trilogy 1) enter lowercase I-enter Edit mode 2) enter key esc-exit editing status 3) input: W (write) Q (quit)-save and exit systemctl restart network check test: ip address show restart the operating system

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