修改主机名，网卡以及设置固定IP

Margaret ·

更新时间:2024-11-14

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修改主机名，网卡以及设置固定IP

其中基于主机centos6,7,8 以及Ubuntu1804

修改主机名

#centos6.10 
vim /etc/sysconfig/network 修改HOSTNAME=后面你想设定的主机名
#ubuntu1804和centos7和centos8
hostnamectl set-hostname 主机名

修改网卡名

#centos7
[root@centos7 ~]#vim /etc/sysconfig/network-scripts/ifcfg-ens33
[root@centos7 ~]#cat /etc/sysconfig/network-scripts/ifcfg-ens33
HWADDR=00:0C:29:A9:27:CA
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=eth0    #ens33改为eth0
UUID=da5ad812-cee5-401d-b648-54fea87ce051
DEVICE=eth0   #ens33改为eth0
ONBOOT=yes
[root@centos7 ~]#mv /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-eth0
[root@centos7 ~]sed -i.bak  '/GRUB_CMDLINE_LINUX=/s#"$# net.ifnames=0 biosdevname=0"#' /etc/default/grub
[root@centos7 ~]#cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="spectre_v2=retpoline rhgb quiet net.ifnames=0 biosdevname=0"   #改的这一项
GRUB_DISABLE_RECOVERY="true"
[root@centos7 ~]#grub2-mkconfig -o /boot/grub2/grub.cfg
[root@centos7 ~]#reboot
#centos8
[root@centos8 ~]#sed -i.bak  '/GRUB_CMDLINE_LINUX=/s#"$# net.ifnames=0"#' /etc/default/grub
[root@centos8 ~]#grub2-mkconfig -o /boot/grub2/grub.cfg &> /dev/null
[root@centos8 ~]#mv /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-eth0
[root@centos8 ~]#reboot
#Ubuntu1804
#因为Ubuntu默认是一般用户不是root 所以改配置文件前面要加sudo，当然也可以使用命令 sudo -i 切换至root
zxr@ubuntu1804:~$ sudo sed -i  '/GRUB_CMDLINE_LINUX=/s#"$# net.ifnames=0"#' /etc/default/grub
zxr@ubuntu1804:~$ sudo update-grub
zxr@ubuntu1804:~$ sudo vim /etc/netplan/*.yaml
zxr@ubuntu1804:~$ cat /etc/netplan/*.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:    #将ens33改为eth0 (注意缩进！！！)
      dhcp4: yes
zxr@ubuntu1804:~$ reboot

修改为固定IP

******************centos6
[root@centos6 ~]#vim /etc/sysconfig/network-scripts/ifcfg-eth0 
DEVICE=eth0
HWADDR=00:0C:29:91:7F:5C
TYPE=Ethernet
UUID=d3f5e5ae-8440-41e9-b12e-777203414f4f
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static    #修改这一项
#添加以下项
IPADDR=10.0.2.6
NETMASK=255.255.255.0
GATEWAY=10.0.2.2
DNS1=114.114.114.114
#重启服务生效
[root@centos6 ~]#service network restart
***************centos7
[root@centos7 ~]#cat /etc/sysconfig/network-scripts/ifcfg-eth0
HWADDR=00:0C:29:A9:27:CA
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static    #修改这一项
EFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=da5ad812-cee5-401d-b648-54fea87ce051
DEVICE=eth0
ONBOOT=yes
#添加以下项
IPADDR=10.0.2.7
GATEWAY=10.0.2.2
DNS1=114.114.114.114
[root@centos7 ~]#systemctl  restart network
**************centos8
[root@centos8 ~]#cat /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static  #修改这一项
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=eth0
UUID=4bf20a0e-09d0-49e2-9e25-2d597e680c98
DEVICE=eth0
ONBOOT=yes
#添加以下项
IPADDR=10.0.2.8
GATEWAY=10.0.2.2
DNS1=114.114.114.114
[root@centos8 ~]#nmcli c reload
*************Ubuntu
# .yaml文件缩进要求严格！
root@ubuntu1804:~# cat /etc/netplan/01-netcfg.yaml 
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    ens33:
      addresses: [192.168.70.140/24]
      gateway4: 192.168.70.1
      nameservers:
        addresses: [233.6.6.6]
#修改完文件后需执行以下命令生效
root@ubuntu1804:~# netplan apply

作者：mecy$

主机名 ip 固定ip

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