Need input with passing commands in Kubernetes containers

The YAML list definition are only a matter of taste, it's just a YAML syntax. This two examples are equivalent:

listOne:- item1- item2listTwo: ['item1', 'item2']

And this syntax works for both args and command. Beside that args and command are slight different, as the documentation says:

• If you do not supply command or args for a Container, the defaultsdefined in the Docker image are used
• If you supply a command but no args for a Container, only the supplied command is used. The default EntryPoint and the default Cmd defined in the Docker image are ignored.
• If you supply only args for a Container, the default Entrypoint defined in the Docker image is run with the args that you supplied.
• If you supply a command and args, the default Entrypoint and the default Cmd defined in the Docker image are ignored. Your command is run with your args.

Imagine a container like mysql, if you look it's Dockerfile you'll notice this:

ENTRYPOINT ["docker-entrypoint.sh"]CMD ["mysqld"]

The entrypoint call a script that prepare everything the database needs, when finish, this script calls exec "$@" and the shell variable $@ are everything defined in cmd.

So, on Kubernetes, if you want to pass arguments to mysqld you do something like:

image: mysqlargs:- mysqld- --skip-grant-tables# or args: ["mysqld", "--skip-grant-tables"]

This still executes the entrypoint but now, the value of $@ is mysqld --skip-grant-tables.