Shulou(Shulou.com)06/01 Report--

* Connect to MongoDB

On this machine, you can directly run the command mongo to enter the mongodb shell

If the mongodb listening port is not the default 27017, you need to add the-- port option when connecting, for example

Mongo-port 27018

To connect to a remote mongodb, you need to add-- host, for example

Mongo-- host 127.0.0.1

If authentication is set, you need to connect with a user name and password

Mongo-uusername-ppasswd / / this looks a lot like MySQL

Exit the database

Ctrl+d

* MongoDB user Management

First of all, mongodb users are for the library. When you set up a user, you need to enter the corresponding library first.

Use test / / switch to the test library. If the library test does not exist, it will be created automatically.

Db.createUser ({user: "admin", pwd: "123456", roles: [{role:'dbOwner',db:'userdb'}]})

Use admin / / switch to the admin library

Db.system.users.find () / / lists all users and must switch to the admin library

Show users / / View all users under the current library

Db.dropUser ('admin') / / Delete user

For user roles, refer to the documentation http://bbs.51cto.com/thread-1146654-1.html

Answer questions after class:

Question: db.createUser ({user: "admin", pwd: "123456", roles: [{role:'dbOwner',db:'userdb'}]}) Why didn't userdb see it?

A: the userdb here is a non-existent library, and its meaning here is to specify which library the user is the owner of.

Q: 1. What libraries or users were originally available after mongodb was installed?

2. There was originally a locla library, but after the user was created, the admin library was added, but there was still no test library.

3. The created user cannot log in to the database.

Answer: 1. After entering, directly show dbs to see, in the initial state, there are no users

2. The test library needs to create a specific collection to appear.

3. To log in, you need to turn on authentication. Http://theadorelee.com/index.php/archives/60.html

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