CentOs设置静态IP

最近做数据库集群 需要配置CentOs的IP地址为静态IP 这里记录一下

查看网卡名称

输入 ip address 查看IP地址

[jtb@localhost ~]$ ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    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: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 1c:1b:0d:00:73:98 brd ff:ff:ff:ff:ff:ff
    inet 172.30.16.5/24 brd 172.30.16.255 scope global enp2s0
    valid_lft forever preferred_lft forever
    inet6 fe80::1e1b:dff:fe00:7398/64 scope link
    valid_lft forever preferred_lft forever

可以看到除去环回地址外只有一个 enp2s0
我们编辑这个网卡的配置信息: vi /etc/sysconfig/network-scripts/ifcfg-enp2s0

TYPE=Ethernet
BOOTPROTO=static #这里改成static
DEFROUTE=yes
IPADDR=172.30.16.5 #新增IP地址
NETMASK=255.255.255.0 #新增子网掩码
GATEWAY=172.30.16.1 #新增网关
NETWORK=172.30.16.0
DNS1=119.29.29.29 #新增DNS地址
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=enp2s0
UUID=b2693e73-4059-4c80-9641-7a8225dc12de
DEVICE=enp2s0
ONBOOT=yes
PEERDNS=yes
PEERROUTES=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_PRIVACY=no

保存配置文件 然后重启网络服务

[jtb@localhost ~]$ service network restart
Restarting network (via systemctl):                        [  确定  ]