在虛擬機新建一個Ubuntu18.04.1-live-server-amd64當做服務器
在安裝軟件時報錯：
slave@slave:~$ sudo -s
[sudo] password for slave:
root@slave:~# apt install redis-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
python3 is already the newest version (3.6.5-3ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 27 not upgraded.
root@slave:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 27 not upgraded.
從報錯信息上看可能存在一些依賴問題或者軟件源出了問題，修復一下破損的依賴關系還是一樣的錯誤信息，此時應該更換Ubuntu的源。
如何更換Ubuntu的源
①進入root模式
sudo -s
②進入ubuntu源的目錄
cd /etc/apt
③備份sources.list
cp sources.list sources.list.bak
④修改sources.list
刪除sources.list中的內容，把阿里雲的源復制進source.list中
vi sources.list
ubuntu 18.04(bionic)
阿里雲：
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src 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-backports main restricted universe multiverse
⑤ 更新源
apt update
6. 更新軟件
apt upgrade
再次安裝軟件就不會報錯了
