Limits of Users and Roles while using X-Pack Plugin

Hi,

Can any one let me know Wile using X-pack plugin with elasticsearch

1:How many roles can be created.Is there any limit to create roles?
2:Can a user have multiple roles?
3:How many users can be created.IS there any limit to create users?

I know that we can Assign multiple roles to single user... but just want confirm ...

Thanks,
Amit

moved this over to the dedicated x-pack forum.

Please only ask your question once, and do not cross post between forums.