RHCSA考题一 :配置hostname和网络

在mars.lab.example.com上,将mars配置为具有以下网络配置:

  • 主机名: mars.lab.example.com image
  • IP地址: 172.25.250.10
  • 子网掩码:255.255.255.0
  • 网关: 172.25.250.254
  • DNS: 72.25.250.254

提示

hostnamectl nmcli


Answer:
  • 设置hostname
    • 方法一:
      hostnamectl set-hostname mars.lab.example.com
    • 方法二:编写 hostname配置文件设置,
      vim /etc/hostname
  • 设置网络
    • 方法一:
      nmcli connection show #查看网卡名,比如这里是 Wired connection1
      nmcli connection modify "Wired connection1" \
      ipv4.method manual \
      ipv4.addresses 172.25.250.10/24 \
      ipv4.gateway 172.25.250.254 \
      ipv4.dns 172.25.250.254 \
      connect.autoconnect yes
      nmcli connection up "Wired connection1 "
    • 方法二: 编写网卡配置文件设置
      vim /etc/sysconfig/network-scripts/ifcfg-Wired_connection1
      ipaddr  172.25.250.20 改成172.25.250.10
      nmcli connection reload
      nmcli connection up "Wired connection1"

验证:

  • hostname file
  • IP
    ip a

    file 或者

    ssh root@mars

    file