ubuntu16.04 安装mysql 5.7.x 报错解决

今天在阿里云服务器上安装mysql报错 :

mysql-server is already the newest version (5.7.19-0ubuntu0.16.04.1).0 upgraded, 0 newly installed, 0 to remove and 16 not upgraded.2 not fully installed or removed.After this operation, 0 B of additional disk space will be used.Do you want to continue? [Y/n] ySetting up mysql-server-5.7 (5.7.19-0ubuntu0.16.04.1) ...Renaming removed key_buffer and myisam-recover options (if present)Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.invoke-rc.d: initscript mysql, action "start" failed.● mysql.service - MySQL Community Server   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)   Active: activating (auto-restart) (Result: exit-code) since Mon 2017-07-24 17:02:56 CST; 10ms ago  Process: 19884 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=1/FAILURE)dpkg: error processing package mysql-server-5.7 (--configure): subprocess installed post-installation script returned error exit status 1dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.7; however:  Package mysql-server-5.7 is not configured yet.dpkg: error processing package mysql-server (--configure): dependency problems - leaving unconfiguredErrors were encountered while processing: mysql-server-5.7 mysql-serverE: Sub-process /usr/bin/dpkg returned an error code (1)

首先, 卸载mysql:

sudo rm /var/lib/mysql/ -Rsudo rm /etc/mysql/ -Rsudo apt-get autoremove mysql* --purgesudo apt-get remove apparmor

然后, 再参考文章运行一遍, 就可以了