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CentOS自動開啟網路連線

CentOS開機網路預設的關閉的,檢視網絡卡:

$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.52.128  netmask 255.255.255.0  broadcast 192.168.52.255
        inet6 fe80::25c5:e1ad:cf86:88fc  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:a5:d3:82  txqueuelen 1000  (Ethernet)
        RX packets 342  bytes 29392 (28.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 210  bytes 30952 (30.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

找到對應的配置檔案:

$ sudo more /etc/sysconfig/network-scripts/ifcfg-ens33
[sudo] Toa 的密碼:
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=a80268f2-6e1b-41f2-8e45-f197b703f2ce
DEVICE=ens33
ONBOOT=no
ZONE=public

可以看到他的ONBOOT是no,將其改成yes(需要管理員許可權)

$ sudo vim /etc/sysconfig/network-scripts/ifcfg-ens33
[[email protected] ~]$ sudo more /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=a80268f2-6e1b-41f2-8e45-f197b703f2ce
DEVICE=ens33
ONBOOT=yes
ZONE=public

下次開機就會直接開啟下圖位置處的聯網了