I'm very new to postsql. Here is my situation. There is an existing postsql running on my VM on port 1234 pointing to a database name : db1. Now, I want to add db2, will I need re-configure another port for ? Maybe 1235 ? Can 1 VM host 2 PostgreSQL Databases ? How would one configure something like this ? 
1 VM host 2 PostgreSQL Databases
postgresql