LINUX centos7.6修改靜態IP與配置引數NM_CONTROLLED

    目前，各種OS作業系統版本瘋狂升級，並且隨之而變的作業系統設定也有很大的改變。對於CENTOS目前最新版本已經

是8.x，但是，centos 7.6相對與以前的老版本，作業系統相關的部分配置已經有比較大的變化，舉例：靜態IP與配置引數

NM_CONTROLLED，當網路配置檔案中沒有改引數時，即便其IP配置使用靜態IP，也不起作用。

--ifcfg-ens34的配置

 [root@centos76mysqlpri network-scripts]# cat ifcfg-ens34

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static #此處已經宣告使用靜態IP

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=ens34

UUID=af87d788-f524-4095-81c9-367eba488f9a

DEVICE=ens34

>

IPADDR=192.168.192.201

PREFIX=24

GATEWAY=192.168.192.1

IPV6_PRIVACY=no

[root@centos76mysqlpri network-scripts]# 

--ifcfg-ens34啟動後的IP地址缺不是期望中的   

[root@centos76mysqlpri network-scripts]# ifup ens34

[root@centos76mysqlpri network-scripts]# ifconfig -a

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.248.129  netmask 255.255.255.0  broadcast 192.168.248.255

        inet6 fe80::7391:3e5e:cead:f642  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:26:76:0c  txqueuelen 1000  (Ethernet)

        RX packets 13523  bytes 17404331 (16.5 MiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 5554  bytes 343077 (335.0 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.192.128  netmask 255.255.255.0  broadcast 192.168.192.255

        inet6 fe80::2162:583:8ee:d0be  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:26:76:16  txqueuelen 1000  (Ethernet)

        RX packets 63  bytes 7008 (6.8 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 138  bytes 20565 (20.0 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 224  bytes 18384 (17.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 224  bytes 18384 (17.9 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 52:54:00:2f:86:09  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

virbr0-nic: flags=4098<BROADCAST,MULTICAST>  mtu 1500

        ether 52:54:00:2f:86:09  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

[root@centos76mysqlpri network-scripts]# 

到此，感覺有點莫名其妙！經查詢是：centos7.6使用NM_CONTROLLED引數控制是否透過網路管理器進行管理。

--修改ifcfg-ens34的配置

[root@centos76mysqlpri network-scripts]# cat ifcfg-ens34

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static

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=ens34

UUID=af87d788-f524-4095-81c9-367eba488f9a

DEVICE=ens34

>

NM_CONTROLLED=no

IPADDR=192.168.192.201

PREFIX=24

GATEWAY=192.168.192.1

IPV6_PRIVACY=no

[root@centos76mysqlpri network-scripts]# 

--ifcfg-ens34網路卡重啟後

[root@centos76mysqlpri network-scripts]# ifup ens34

[root@centos76mysqlpri network-scripts]# ifconfig -a

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.248.129  netmask 255.255.255.0  broadcast 192.168.248.255

        inet6 fe80::7391:3e5e:cead:f642  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:26:76:0c  txqueuelen 1000  (Ethernet)

        RX packets 13523  bytes 17404331 (16.5 MiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 5554  bytes 343077 (335.0 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.192.201  netmask 255.255.255.0  broadcast 192.168.192.255

        inet6 fe80::20c:29ff:fe26:7616  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:26:76:16  txqueuelen 1000  (Ethernet)

        RX packets 81  bytes 8664 (8.4 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 167  bytes 24573 (23.9 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 224  bytes 18384 (17.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 224  bytes 18384 (17.9 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 52:54:00:2f:86:09  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

virbr0-nic: flags=4098<BROADCAST,MULTICAST>  mtu 1500

        ether 52:54:00:2f:86:09  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

[root@centos76mysqlpri network-scripts]#