centos7系统设置静态IP - 《thingsboard-3.2学习笔记》

centos7的网络IP地址配置文件在 /etc/sysconfig/network-scripts 文件夹下，使用ifconfig命令，查看当前网卡名称：

[root@localhost greamrod]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::d511:a33:fa1a:c6f4  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:25:18:fa  txqueuelen 1000  (Ethernet)
        RX packets 12352  bytes 12641552 (12.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7337  bytes 514001 (501.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 52  bytes 4424 (4.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 52  bytes 4424 (4.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:29:42:a8  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens33网卡对应的配置文件为ifcfg-ens33，查看：

[root@localhost greamrod]# ll /etc/sysconfig/network-scripts/ifcfg-ens33 
-rw-r--r--. 1 root root 310 7月   2 10:10 /etc/sysconfig/network-scripts/ifcfg-ens33
[root@localhost greamrod]# cat /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="dhcp"
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="b0127cae-044a-45d3-8f19-2f0dc4673365"
DEVICE="ens33"
ONBOOT="yes"

使用vim编辑/etc/sysconfig/network-scripts/ifcfg-ens33文件，修改后如下:

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"         # 使用静态IP地址，默认为dhcp
IPADDR="192.168.1.120"   # 设置的静态IP地址
NETMASK="255.255.255.0"    # 子网掩码
GATEWAY="192.168.1.1"    # 网关地址
DNS1="114.114.114.114"       # 第1个DNS服务器
DNS2="8.8.8.8"       # 第2个DNS服务器
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="b0127cae-044a-45d3-8f19-2f0dc4673365"
DEVICE="ens33"
ONBOOT="yes"

然后使用service network restart命令即可配置静态IP地址

[root@localhost greamrod]# service network restart
Restarting network (via systemctl):                        [  确定  ]

配置成功后的情况：

[greamrod@localhost ~]$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::d511:a33:fa1a:c6f4  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:25:18:fa  txqueuelen 1000  (Ethernet)
        RX packets 17396  bytes 13089910 (12.4 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7923  bytes 611799 (597.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 192  bytes 16628 (16.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 192  bytes 16628 (16.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:29:42:a8  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0