ubuntu18.04网络配置

ubuntu18.04主机名修改

主机名修改，重启生效

# 查询系统信息
uname -a
lsb_release -a

# 修改主机名，重启生效
cat /etc/cloud/cloud.cfg | grep "preserve_hostname"
sudo cp /etc/cloud/cloud.cfg /etc/cloud/cloud.cfg.backup
sudo sed -i "s|preserve_hostname.*|preserve_hostname: true|g" /etc/cloud/cloud.cfg
sudo hostnamectl set-hostname ubuntu
sudo reboot

ubuntu18.04网络配置

动态网络配置，配置文件/etc/netplan/50-cloud-init.yaml

sudo cp /etc/netplan/50-cloud-init.yaml /etc/netplan/50-cloud-init.yaml.backup
sudo vim /etc/netplan/50-cloud-init.yaml
network:
    renderer: networkd
    ethernets:
        ens33:
            dhcp4: yes
            dhcp6: yes
    version: 2

# 应用网络计划
sudo netplan apply

静态网络配置，配置文件/etc/netplan/50-cloud-init.yaml

sudo cp /etc/netplan/50-cloud-init.yaml /etc/netplan/50-cloud-init.yaml.backup
sudo vim /etc/netplan/50-cloud-init.yaml
network:
    renderer: networkd
    ethernets:
        ens33:
            dhcp4: no
            addresses: [192.168.0.151/24]
            gateway4: 192.168.0.1
            nameservers:
                addresses: [8.8.8.8, 8.8.4.4]
                search: []
            optional: true
    version: 2

# 应用网络计划
sudo netplan apply

配置多张网卡，配置文件/etc/netplan/50-cloud-init.yaml

sudo cp /etc/netplan/50-cloud-init.yaml /etc/netplan/50-cloud-init.yaml.backup
sudo vim /etc/netplan/50-cloud-init.yaml
network:
    renderer: networkd
    ethernets:
        ens33:
            dhcp4: yes
            dhcp6: no
        ens34:
            dhcp4: no
            dhcp6: no
            addresses: [192.168.0.151/24]
            gateway4: 192.168.0.1
            nameservers:
                addresses: [8.8.8.8, 8.8.4.4]
                search: []
            optional: true
    version: 2

# 应用网络计划
sudo netplan apply

ubuntu18.04配置中科大源

/etc/apt/sources.list最前面追加如下内容

vim /etc/apt/sources.list
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

sudo apt-get update
sudo apt-get upgrade