La instalación de MySQL falla en Ubuntu 18.10.

La instalación de MySQL falla en Ubuntu 18.10.

Estoy intentando configurar mi minipc que vino con ubuntu 10.10. Estoy siguiendo las instrucciones de instalación de LAMP en Digital Ocean, pero la instalación de mySql falla y aparece el siguiente mensaje:

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Probé la sugerencia y obtengo los mismos resultados. También intenté reiniciar el sistema y eso no ayudó.

El siguiente es el resultado del terminal del intento de instalación.

sudo apt install mysql-server
[sudo] password for minipc: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libaio1 libevent-core-2.1-6 libhtml-template-perl mysql-client-5.7
  mysql-client-core-5.7 mysql-common mysql-server-5.7 mysql-server-core-5.7
Suggested packages:
  libipc-sharedcache-perl mailx tinyca
The following NEW packages will be installed:
  libaio1 libevent-core-2.1-6 libhtml-template-perl mysql-client-5.7
  mysql-client-core-5.7 mysql-common mysql-server mysql-server-5.7
  mysql-server-core-5.7
0 upgraded, 9 newly installed, 0 to remove and 313 not upgraded.
Need to get 20.6 MB of archives.
After this operation, 159 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Ign:1 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 mysql-common all 5.8+1.0.4
Err:2 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 libaio1 amd64 0.3.111-1
  Temporary failure resolving 'cn.archive.ubuntu.com'
Ign:3 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-client-core-5.7 amd64 5.7.25-0ubuntu0.18.10.2
Ign:4 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-client-5.7 amd64 5.7.25-0ubuntu0.18.10.2
Ign:5 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server-core-5.7 amd64 5.7.25-0ubuntu0.18.10.2
Err:6 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 libevent-core-2.1-6 amd64 2.1.8-stable-4build1
  Temporary failure resolving 'cn.archive.ubuntu.com'
Ign:7 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server-5.7 amd64 5.7.25-0ubuntu0.18.10.2
Ign:8 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 libhtml-template-perl all 2.97-1
Ign:9 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server all 5.7.25-0ubuntu0.18.10.2
Err:1 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 mysql-common all 5.8+1.0.4
  Temporary failure resolving 'cn.archive.ubuntu.com'
Err:8 http://cn.archive.ubuntu.com/ubuntu cosmic/main amd64 libhtml-template-perl all 2.97-1
  Temporary failure resolving 'cn.archive.ubuntu.com'
Err:3 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-client-core-5.7 amd64 5.7.25-0ubuntu0.18.10.2
  Temporary failure resolving 'cn.archive.ubuntu.com'
Ign:9 http://cn.archive.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server all 5.7.25-0ubuntu0.18.10.2
Err:4 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-client-5.7 amd64 5.7.25-0ubuntu0.18.10.2
  Temporary failure resolving 'cn.archive.ubuntu.com'
Err:5 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server-core-5.7 amd64 5.7.25-0ubuntu0.18.10.2
  Temporary failure resolving 'cn.archive.ubuntu.com'
Err:7 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server-5.7 amd64 5.7.25-0ubuntu0.18.10.2
  Temporary failure resolving 'cn.archive.ubuntu.com'
Ign:9 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server all 5.7.25-0ubuntu0.18.10.2
Err:9 http://security.ubuntu.com/ubuntu cosmic-updates/main amd64 mysql-server all 5.7.25-0ubuntu0.18.10.2
  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/pool/main/m/mysql-defaults/mysql-common_5.8+1.0.4_all.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/pool/main/liba/libaio/libaio1_0.3.111-1_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-core-5.7_5.7.25-0ubuntu0.18.10.2_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-client-5.7_5.7.25-0ubuntu0.18.10.2_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-server-core-5.7_5.7.25-0ubuntu0.18.10.2_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/pool/main/libe/libevent/libevent-core-2.1-6_2.1.8-stable-4build1_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-server-5.7_5.7.25-0ubuntu0.18.10.2_amd64.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/pool/main/libh/libhtml-template-perl/libhtml-template-perl_2.97-1_all.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/mysql-server_5.7.25-0ubuntu0.18.10.2_all.deb  Temporary failure resolving 'cn.archive.ubuntu.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

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