Apr 16 17:01:50 gtest systemd[1]: Starting MySQL Community Server...
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: /usr/share/mysql/mysql-systemd-start: line 37: [: too many arguments
Apr 16 17:01:50 gtest su[12221]: Successful su for mysql by root
Apr 16 17:01:50 gtest su[12221]: + ??? root:mysql
Apr 16 17:01:50 gtest su[12221]: pam_unix(su:session): session opened for user mysql by (uid=0)
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.393848Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp se
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.395980Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.396007Z 0 [ERROR] Aborting
Apr 16 17:01:50 gtest su[12221]: pam_unix(su:session): session closed for user mysql
Apr 16 17:01:50 gtest su[12226]: Successful su for mysql by root
Apr 16 17:01:50 gtest su[12226]: + ??? root:mysql
Apr 16 17:01:50 gtest su[12226]: pam_unix(su:session): session opened for user mysql by (uid=0)
Apr 16 17:01:50 gtest su[12226]: pam_unix(su:session): session closed for user mysql
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.621414Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp se
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.628608Z 0 [ERROR] InnoDB: Linux Native AIO not supported. You can either move tmpdir to a file system that supports nati
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.628662Z 0 [ERROR] InnoDB: Linux Native AIO check on tmpdirreturned error[22]
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.628670Z 0 [Warning] InnoDB: Linux Native AIO disabled.
Apr 16 17:01:50 gtest mysql-systemd-start[12214]: 2016-04-16T17:01:50.816155Z 0 [Warning] CA certificate ca.pem is self signed.
Apr 16 17:01:51 gtest mysql-systemd-start[12214]: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
Apr 16 17:01:51 gtest mysql-systemd-start[12214]: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
Apr 16 17:01:51 gtest mysql-systemd-start[12214]: ^Gmysqladmin: connect to server at 'localhost' failed
Apr 16 17:01:51 gtest mysql-systemd-start[12214]: error: 'Access denied for user 'root'@'localhost' (using password: NO)'
Apr 16 17:01:51 gtest mysql-systemd-start[12214]: Percona Server configuration not found at /etc/mysql/my.cnf. Please install one using update-alternatives.
Apr 16 17:01:51 gtest systemd[1]: mysql.service: control process exited, code=exited status=1
Apr 16 17:01:51 gtest systemd[1]: Failed to start MySQL Community Server.
Apr 16 17:01:51 gtest systemd[1]: Unit mysql.service entered failed state.