Unable to set password for the MySQL "root" user?

Question

MySQL

I can’t install mysql, from the beginning I wanted to reinstall it, removed everything related to mysql and started installing it again, but during installation I got only:

131209 5:19:47 [Warning] Using unique option prefix key_buffer instead of key_buffer_size is deprecated and will be removed in a future release. Please use the full name instead.
Configuring mysql-server-5.5
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Unable to set password for the MySQL "root" user
An error occurred while setting the password for the MySQL administrative user. This may have happened because the account already has a password, or because of a communication problem with
the MySQL server.
You should check the account's password after the package installation.
Please read the /usr/share/doc/mysql-server-5.5/README.Debian file for more information.

I already thought that something was bothering him and reinstalled the system. I started to put lamp and get the same error.
I decided to reinstall mysql due to an error

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' (2)

.
How to install correctly? Before, everything worked out smoothly. Ubuntu 13.10 system

Answer 1

It is necessary to look in **.err file

Answer 2

Remove everything related to MySQL again. After that delete mysql-related files manually, for example, like this:
And after that install the MySQL server again, everything will work out.

Answer 3

apt-get -y remove mysql-server
rm -rf /var/lib/mysql* /etc/mysql*
apt-get -y install mysql-server

Answer 4

Also try dpkg-reconfigure mysql-server

Answer 5

If the issue is still relevant.
Try adding innodb_use_native_aio = 0 to /etc/mysql/my.cnf under [mysqld] and try again.