最小化安装ubuntu基本配置

选择最小化安装ubuntu 服务器版,建议至少按照以下包

sudo apt install vim zip unzip wget tree gcc g++ automake iputils-ping telnet net-tools build-essential manpages-dev

配置网络

root@ubuntu:/etc/netplan# netplan apply
root@ubuntu:/etc/netplan# cat 50-cloud-init.yaml
network:
  version: 2
  ethernets:
    enp0s3:
      dhcp4: true
      routes:
      - to: 10.0.2.0/24
        via: "10.0.2.1"
    enp0s8:
      addresses:
      - "192.168.56.15/24"
      routes:
      - to: "192.168.56.0/24"
        via: "192.168.56.1"
root@ubuntu:/etc/netplan#

root@ubuntu:/etc/netplan# netplan apply
root@ubuntu:/etc/netplan#  systemctl status systemd-networkd
root@ubuntu:/etc/netplan#  systemctl restart systemd-networkd

采用nat+host-only模式,实现上午走nat,其它走host-only。

ubuntu@ubuntu:~$ netplan status
     Online state: online
    DNS Addresses: 127.0.0.53 (stub)
       DNS Search: .

●  1: lo ethernet UNKNOWN/UP (unmanaged)
      MAC Address: 00:00:00:00:00:00
        Addresses: 127.0.0.1/8
                   ::1/128

●  2: enp0s3 ethernet UP (networkd: enp0s3)
      MAC Address: 08:00:27:67:1b:0d (Intel Corporation)
        Addresses: 10.0.2.15/24 (dynamic, dhcp)
                   fd17:625c:f037:2:a00:27ff:fe67:1b0d/64 (dynamic, ra)
                   fe80::a00:27ff:fe67:1b0d/64 (link)
    DNS Addresses: 10.0.2.3
                   fd17:625c:f037:2::3
           Routes: default via 10.0.2.2 from 10.0.2.15 metric 100 (dhcp)
                   10.0.2.0/24 via 10.0.2.1 (static)
                   10.0.2.0/24 from 10.0.2.15 metric 100 (link)
                   10.0.2.2 from 10.0.2.15 metric 100 (dhcp, link)
                   10.0.2.3 from 10.0.2.15 metric 100 (dhcp, link)
                   fd17:625c:f037:2::/64 metric 100 (ra)
                   fe80::/64 metric 256
                   default via fe80::2 metric 100 (ra)

●  3: enp0s8 ethernet UP (networkd: enp0s8)
      MAC Address: 08:00:27:63:46:84 (Intel Corporation)
        Addresses: 192.168.56.15/24
                   fe80::a00:27ff:fe63:4684/64 (link)
           Routes: 192.168.56.0/24 from 192.168.56.15 (link)
                   192.168.56.0/24 via 192.168.56.1 (static)
                   fe80::/64 metric 256
ubuntu@ubuntu:~$

这样配置的好处，就是不用桥架网络，也可以上网，同时还可以远程连接，不占用路由IP。

第二台机器，采用桥接配置：

root@ubuntu:/etc/netplan# cat 50-cloud-init.yaml
network:
  version: 2
  ethernets:
    enp0s3:
      dhcp4: false
      addresses:
      - 192.168.3.18/24
      routes:
      - to: default
        via: "192.168.3.1"
      nameservers:
        addresses:
        - 114.114.114.114
        - 8.8.8.8

    enp0s8:
      addresses:
      - "192.168.56.10/24"
      routes:
      - to: "192.168.56.0/24"
        via: "192.168.56.1"
root@ubuntu:/etc/netplan#

后续再给大家更多有关ubuntud的配置。