Проблема с mysql 5.7, mysql_install_db

[DaVASrK]

При вводе в консоле mysql_install_db выдаёт:

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[WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
[ERROR]   The data directory needs to be specified.

Ок, делаем --initialize, теперь выдаёт:

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mysqld: Can't create directory '/var/lib/mysql/' (Errcode: 13 - Permission denied)
[Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
[ERROR] Aborting

Пробую --explicit_defaults_for_timestamp, выдаёт:

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mysqld: Can't change dir to '/var/lib/mysql/' (Errcode: 2 - No such file or directory)
[Warning] Can't create test file /var/lib/mysql/vasily-pc.lower-test
[Note] mysqld (mysqld 5.7.15-0ubuntu0.16.04.1) starting as process 7204 ...
[Warning] Can't create test file /var/lib/mysql/vasily-pc.lower-test
[Warning] Can't create test file /var/lib/mysql/vasily-pc.lower-test
[ERROR] failed to set datadir to /var/lib/mysql/
[ERROR] Aborting

[Note] Binlog end
[Note] mysqld: Shutdown complete

Меня в конфиге explicit_defaults_for_timestamp = 1
Теперь --initialize выдает:

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[ERROR] Can't change data directory owner to mysql
[ERROR] Aborting

[AnrDaemon]

Объясните, что именно вы делаете?… С самого начала.