1.网络配置
1.1
image.png
1.2然后进入centos系统
其中“ens33”为网卡名称，修改IP地址等信息
vi /etc/sysconfig/network-scripts/ifcfg-ens33
根据实际情况修改内容：
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static #启用静态ip地址
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=8d497804-9ffa-4edc-951a-5ddd8d2ed504
DEVICE=ens33
ONBOOT=yes #自动启用网络连接
IPADDR0=192.168.0.201 #IP地址
PREFIXO0=24 #子网掩码
GATEWAY0=192.168.0.1 #网关
DNS1=192.168.0.1 #DNS
修改好后wq保存退出，，
并重启网络
[root@centos7 ~]# service network restart
测试网络是否连接正常：
[root@centos7 ~]# ping www.baidu.com
2.安装软件
yum install -y net-tools vim-enhanced wget
3 关闭SELinux
编辑SELinux配置文件
vim /etc/selinux/config
注释掉2行代码，并在最后添加1行代码
#SELINUX=enforcing
#SELINUXTYPE=targeted
SELINUX=disabled
保存并关闭，使设置启用，最好重启一下系统，也可以稍后重启
setenforce 0
4 关闭CentOS自带firewall防火墙，启用iptables
4.1停止firewall
[root@centos7 /]# systemctl stop firewalld
关闭firewall自动启动
[root@centos7 /]# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
4.2安装iptables防火墙
yum install -y iptables-services
使用iptables默认配置文件，可以在此配置文件中增加规则
[root@centos7 ~]# vim /etc/sysconfig/iptables
# sample configuration for iptables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
重启iptables，并添加到开机自启项中，查看iptables状态
[root@centos7 ~]# systemctl restart iptables.service
[root@centos7 ~]# systemctl enable iptables.service
Created symlink from /etc/systemd/system/basic.target.wants/iptables.service to /usr/lib/systemd/system/iptables.service.
[root@centos7 ~]# service iptables status
Redirecting to /bin/systemctl status iptables.service
● iptables.service - IPv4 firewall with iptables
Loaded: loaded (/usr/lib/systemd/system/iptables.service; enabled; vendor preset: disabled)
Active: active (exited) since Mon 2018-05-21 18:09:28 CST; 18s ago
Main PID: 1195 (code=exited, status=0/SUCCESS)
May 21 18:09:27 centos7 systemd[1]: Starting IPv4 firewall with iptables...
May 21 18:09:28 centos7 iptables.init[1195]: iptables: Applying firewall rules: [ OK ]
May 21 18:09:28 centos7 systemd[1]: Started IPv4 firew
4配置国内yum源和epel源
4.1 配置yum源
1）新建文件夹，保存系统中原来的repo文件
[root@centos7 ~]# cd /etc/yum.repos.d/
[root@centos7 yum.repos.d]# mkdir repo_bak
[root@centos7 yum.repos.d]# mv *.repo repo_bak/
2）下载阿里云和网易对应系统的repo文件
[root@centos7 yum.repos.d]# wget http://mirrors.aliyun.com/repo/Centos-7.repo
[root@centos7 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[root@centos7 yum.repos.d]# ll
total 8
-rw-r--r-- 1 root root 1572 Dec 1 2016 CentOS7-Base-163.repo
-rw-r--r-- 1 root root 2573 Nov 21 2014 Centos-7.repo
drwxr-xr-x 2 root root 187 May 21 18:25 repo_bak
3）清楚系统yum缓存，并生成新的yum缓存
[root@centos7 yum.repos.d]# yum clean all
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Cleaning repos: base extras updates
Cleaning up everything
Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
Cleaning up list of fastest mirrors
[root@centos7 yum.repos.d]# yum makecache
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Determining fastest mirrors
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/12): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/12): base/7/x86_64/primary_db | 5.9 MB 00:00:01
(3/12): extras/7/x86_64/prestodelta | 47 kB 00:00:00
(4/12): base/7/x86_64/other_db | 2.5 MB 00:00:00
(5/12): extras/7/x86_64/primary_db | 143 kB 00:00:00
(6/12): extras/7/x86_64/filelists_db | 517 kB 00:00:00
(7/12): extras/7/x86_64/other_db | 91 kB 00:00:00
(8/12): updates/7/x86_64/prestodelta | 180 kB 00:00:00
(9/12): updates/7/x86_64/filelists_db | 875 kB 00:00:00
(10/12): updates/7/x86_64/other_db | 201 kB 00:00:00
(11/12): updates/7/x86_64/primary_db | 1.2 MB 00:00:00
(12/12): base/7/x86_64/filelists_db | 6.9 MB 00:00:04
Metadata Cache Created
4.2 配置epel源
1）安装epel-release，安装成功后，会自动生成epel.repo和epel-testing.repo两个文件
[root@centos7 yum.repos.d]# yum list | grep epel-release
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
epel-release.noarch 7-11 extras
[root@centos7 yum.repos.d]# yum install -y epel-release
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package epel-release.noarch 0:7-11 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================================
Package Arch Version Repository Size
==============================================================================================================
Installing:
epel-release noarch 7-11 extras 15 k
Transaction Summary
==============================================================================================================
Install 1 Package
Total download size: 15 k
Installed size: 24 k
Downloading packages:
epel-release-7-11.noarch.rpm | 15 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : epel-release-7-11.noarch 1/1
Verifying : epel-release-7-11.noarch 1/1
Installed:
epel-release.noarch 0:7-11
Complete!
[root@centos7 yum.repos.d]# ll
total 16
-rw-r--r-- 1 root root 1572 Dec 1 2016 CentOS7-Base-163.repo
-rw-r--r-- 1 root root 2573 Nov 21 2014 Centos-7.repo
-rw-r--r-- 1 root root 951 Oct 3 2017 epel.repo
-rw-r--r-- 1 root root 1050 Oct 3 2017 epel-testing.repo
drwxr-xr-x 2 root root 187 May 21 18:25 repo_bak
2）下载阿里云开源镜像的epel源文件
[root@centos7 yum.repos.d]# wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo
--2018-05-21 18:35:24-- http://mirrors.aliyun.com/repo/epel-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 1.81.1.230, 1.81.1.223, 1.81.1.224, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|1.81.1.230|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 664 [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/epel-7.repo’
100%[====================================================================>] 664 --.-K/s in 0s
2018-05-21 18:35:24 (148 MB/s) - ‘/etc/yum.repos.d/epel-7.repo’ saved [664/664]
[root@centos7 yum.repos.d]# ll
total 20
-rw-r--r-- 1 root root 1572 Dec 1 2016 CentOS7-Base-163.repo
-rw-r--r-- 1 root root 2573 Nov 21 2014 Centos-7.repo
-rw-r--r-- 1 root root 664 May 11 11:35 epel-7.repo
-rw-r--r-- 1 root root 951 Oct 3 2017 epel.repo
-rw-r--r-- 1 root root 1050 Oct 3 2017 epel-testing.repo
drwxr-xr-x 2 root root 187 May 21 18:25 repo_bak
3）再次清除系统yum缓存，并重新生成yum缓存
[root@centos7 yum.repos.d]# yum clean all
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository epel is listed more than once in the configuration
Repository epel-debuginfo is listed more than once in the configuration
Repository epel-source is listed more than once in the configuration
Cleaning repos: base epel extras updates
Cleaning up everything
Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
Cleaning up list of fastest mirrors
[root@centos7 yum.repos.d]# yum makecache
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository epel is listed more than once in the configuration
Repository epel-debuginfo is listed more than once in the configuration
Repository epel-source is listed more than once in the configuration
Determining fastest mirrors
base | 3.6 kB 00:00:00
epel | 4.7 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/18): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/18): base/7/x86_64/primary_db | 5.9 MB 00:00:01
(3/18): base/7/x86_64/other_db | 2.5 MB 00:00:00
(4/18): epel/x86_64/group_gz | 88 kB 00:00:01
(5/18): epel/x86_64/updateinfo | 923 kB 00:00:00
(6/18): epel/x86_64/prestodelta | 2.8 kB 00:00:00
(7/18): epel/x86_64/primary_db | 6.4 MB 00:00:02
(8/18): epel/x86_64/filelists_db | 10 MB 00:00:03
(9/18): extras/7/x86_64/filelists_db | 517 kB 00:00:00
(10/18): extras/7/x86_64/primary_db | 143 kB 00:00:00
(11/18): extras/7/x86_64/other_db | 91 kB 00:00:00
(12/18): extras/7/x86_64/prestodelta | 47 kB 00:00:00
(13/18): updates/7/x86_64/prestodelta | 180 kB 00:00:00
(14/18): updates/7/x86_64/primary_db | 1.2 MB 00:00:00
(15/18): updates/7/x86_64/other_db | 201 kB 00:00:00
(16/18): epel/x86_64/other_db | 3.1 MB 00:00:01
(17/18): updates/7/x86_64/filelists_db | 875 kB 00:00:00
(18/18): base/7/x86_64/filelists_db | 6.9 MB 00:00:09
Metadata Cache Created
3.7.3 查看系统可用的yum源和所有的yum源
[root@centos7 yum.repos.d]# yum repolist enabled
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository epel is listed more than once in the configuration
Repository epel-debuginfo is listed more than once in the configuration
Repository epel-source is listed more than once in the configuration
Loading mirror speeds from cached hostfile
repo id repo name status
base/7/x86_64 CentOS-7 - Base - 163.com 9,911
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12,542
extras/7/x86_64 CentOS-7 - Extras - 163.com 291
updates/7/x86_64 CentOS-7 - Updates - 163.com 539
repolist: 23,283
[root@centos7 yum.repos.d]#
[root@centos7 yum.repos.d]# yum repolist all
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository epel is listed more than once in the configuration
Repository epel-debuginfo is listed more than once in the configuration
Repository epel-source is listed more than once in the configuration
Loading mirror speeds from cached hostfile
repo id repo name status
base/7/x86_64 CentOS-7 - Base - 163.com enabled: 9,911
centosplus/7/x86_64 CentOS-7 - Plus - 163.com disabled
contrib/7/x86_64 CentOS-7 - Contrib - mirrors.aliyun.com disabled
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 enabled: 12,542
epel-debuginfo/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 - Debug disabled
epel-source Extra Packages for Enterprise Linux 7 - x86_64 - Source disabled
epel-testing/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 disabled
epel-testing-debuginfo/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Debug disabled
epel-testing-source/x86_64 Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Sourc disabled
extras/7/x86_64 CentOS-7 - Extras - 163.com enabled: 291
updates/7/x86_64 CentOS-7 - Updates - 163.com enabled: 539
repolist: 23,283
5. 修改hostname主机名
3.8.1 hostnamectl
[root@localhost ~]# hostnamectl
Static hostname: localhost.localdomain
Icon name: computer-vm
Chassis: vm
Machine ID: 8dbe281bfa3d4b3c9390c26f494db334
Boot ID: b629ca855d3e4406ab886fe709d2f917
Virtualization: vmware
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:/o:centos:centos:7
Kernel: Linux 3.10.0-514.el7.x86_64
Architecture: x86-64
[root@localhost ~]# hostnamectl set-hostname CentOS
[root@localhost ~]# hostnamectl
Static hostname: centos
Pretty hostname: CentOS
Icon name: computer-vm
Chassis: vm
Machine ID: 8dbe281bfa3d4b3c9390c26f494db334
Boot ID: b629ca855d3e4406ab886fe709d2f917
Virtualization: vmware
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:/o:centos:centos:7
Kernel: Linux 3.10.0-514.el7.x86_64
Architecture: x86-64
[root@localhost ~]# hostname
centos
3.8.2 修改主机名文件
[root@localhost ~]# vi /etc/hostname