设置静态网络

1、设置静态网络，一是用来不让地址飘忽不定，二来是为了访问外网。

命令如下：

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33

修改内容：

TYPE="Ethernet"
BOOTPROTO="static"　　　　# 设置为静态网络static。
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens33"
UUID="66f9933b-54eb-4156-81f4-8cb3f344124b"
DEVICE="ens33"
ONBOOT="yes"
IPADDR="192.168.43.2"　　　　# 配置跟宿主机联网的同网段IP地址
NETMASK="255.255.255.0"　　　　　　# 配置子网掩码
GATEWAY="192.168.43.1"　　　　　　# 配置宿主机的网关
DNS1="8.8.8.8"　　　　　　# 配置DNS解析服务器

 2、重启网络服务。

[root@localhost ~]# systemctl restart network

 3、查看IP地址是否已经更改。

[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:b2:e5:54 brd ff:ff:ff:ff:ff:ff
    inet 192.168.43.2/24 brd 192.168.43.255 scope global ens33　　　　# 可以查看这里IP地址已经更改
       valid_lft forever preferred_lft forever
    inet6 2409:890c:39b0:630:1427:b41a:753c:ef8d/64 scope global noprefixroute dynamic 
       valid_lft 3472sec preferred_lft 3472sec
    inet6 fe80::e458:494f:e11c:bbe8/64 scope link 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000
    link/ether 52:54:00:cd:f3:96 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 1000
    link/ether 52:54:00:cd:f3:96 brd ff:ff:ff:ff:ff:ff

 4、验证网络是否联通。

[root@localhost ~]# ping www.baidu.com
PING www.a.shifen.com (39.156.66.18) 56(84) bytes of data.
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=1 ttl=50 time=51.6 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=2 ttl=50 time=69.3 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=3 ttl=50 time=57.5 ms

关闭防火墙

1、关闭防火墙，防止以后服务会被防火墙挡掉。

[root@localhost ~]# iptables -F
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
[root@localhost ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

Mar 16 02:52:21 localhost.localdomain systemd[1]: Starting firewalld - dynami....
Mar 16 02:52:27 localhost.localdomain systemd[1]: Started firewalld - dynamic....
Mar 16 03:45:13 localhost.localdomain systemd[1]: St