vm

ubuntu 18

换源

1.查看发行版本信息

ubuntu 20.04

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$ lsb_release -a
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.1 LTS
Release:	    20.04
Codename:	    focal
#可以看到发行版本代号为 focal

ubuntu 18.04

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$ lsb_release -c
Codename:	bionic
#可以看到发行版本代号为 bionic

部分ubuntu系统LTS版本代号

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Ubuntu 16.04代号为：xenial
Ubuntu 17.04代号为：zesty
Ubuntu 18.04代号为：bionic
Ubuntu 19.04代号为：disco
Ubuntu 20.04代号为：focal
2.修改sources.list文件
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sudo vim /etc/apt/sources.list

ubuntu 20.04

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#阿里源
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse

ubuntu 18.04

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#阿里源
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
3.更新
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sudo apt-get update
sudo apt-get upgrade

静态ip

1.首先查看虚拟机的各个网络字段

  • image-20230321082724844

  • 提取信息

    • 上图所示我的NAT网络配置：
    子网ip：192.168.230.0 #need 这里需要用子网ip这个同一个网段的不同地址，例如这里的就是192.168.230.*(1~255)
    子网掩码：255.255.255.0
    子网网关：182.168.230.2 #need

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      - 其次还需要从自己主机查看本地网络的dns

        - ![image-20230321082911577](http://101.34.32.235:9124/i/2023/03/21/6418fa59d156f.jpg)
        - 点击详细信息进行查看![image-20230321082947727](http://101.34.32.235:9124/i/2023/03/21/6418fa7dae72d.jpg)

      ##### 2.下面是对虚拟机的配置

      - ```bash
        sudo vim /etc/netplan/01-network-manager-all.yaml #只要配置netplan下面的这个文件就行，如果没有这个同名的，可以找一下自己的目录,只要是yaml这个后缀的就行

  • image-20230321082559295

    • 模板

    • network:
  version: 2
  renderer: NetworkManager
  ethernets:
    ens32:  #配置的网卡名称
      dhcp4: no    #dhcp4关闭
      dhcp6: no    #dhcp6关闭
      addresses: [192.168.230.128/24]   #设置本机IP及掩码
      optional: true
      gateway4: 192.168.230.2   #设置网关
      nameservers:
          addresses: [192.168.0.1]   #设置DNS

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      #### ssh连接

      ##### 1.关闭防火墙

      ```bash
      sudo ufw disable
2.安装OpenSSH
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sudo apt-get install openssh-server openssh-client
3.验证
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netstat -tnl