Quick guide: How to set up MySQL and PostgreSQL databases for Perl development

# The following means mysql is not running:

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

MySQL

INSTALL

sudo apt install -y libmysqlclient-dev mysql-client mysql-server

START

$ sudo service mysql start

SETUP

CREATE USER zaphod;

ALTER USER 'zaphod'@'%' IDENTIFIED BY 'some_pass';

GRANT ALL PRIVILEGES ON *.* TO 'zaphod'@'%'; -- makes zaphod an admin

FLUSH PRIVILEGES;

ACCESS

$ mysql -u zaphod -D some_db -p

ADMIN ACCESS

$ sudo mysql

PostgreSQL

INSTALL

sudo apt install -y postgresql libpq-dev

START

$ sudo service postgresql start

SETUP

create user zaphod;

\password zaphod

create database some_db;

grant all privileges on database some_db to zaphod;

ACCESS

$ psql -U zaphod -h localhost -d some_db

# specifying the host forces md5 (password) authentication. Otherwise default is "peer"

ADMIN ACCESS

$ sudo su postgres

$ psql