MongoDB's database security and GridFS

Set the username and password of the MongoDB database

/etc/xxx.conf

Edit mongodb configuration file to enable user authentication

vim /etc/mongodb.conf

# IP
bind_ip = 0.0.0.0
# 端口
port = 27017

Modify the following security configuration

# Turn on/off security.  Off is currently the default
#noauth = true
#auth = true

Remove #auth=truecomments before#

auth = true

Restart mongodbService

service mongodb restart

mongoConnect to the server using a shell

# 连接服务器
mongo

# 连接到 admin 数据库
use admin

# 创建管理员账号，用户名和密码可以任意，角色为 `root`
db.createUser({user:'root',pwd:'123456',roles:['root']})

# 登录
db.auth('root','123456')

After login in the admin database

user admin

db.auth('root','hello')

show collections
> system.users
> system.version

# 显示用户信息
db.system.users.find().pretty()

Design user name and password for a specific database

# 创建数据库
use hr

# 创建用户
db.createUser({
  user:'hr_user',
  pwd:'123',
  roles:[{db:'hr',role:'dbOwner'}]
  })

# 显示用户
show users

Connect to the database

mongo 127.0.0.1:27017/demo -u demo -p

# 获得 mongo shell 更多信息
mongo --help

Data modeling

• 文档Embedded in子文档
• Between documents 引用( $lookupsimilar to table connections in a relational database)

MongoDB a document cannot exceed 16M (a document should not be nested too large)

MongoDB GridFS (Grid File System)

Used to store large files (more than 16M), the file (default) will be cut into 255k block storage, stored in two sets, one stores the meta information of the file, the other stores the data

# 往数据库 myfile 中上传（put）文件
mongofiles -d myfile put 文件路径

# 显示数据库 myfile 中的文件
mongofiles -d myfile list

Files are stored in two collections

• Metadata information of the fs.files file (file name, size, block size, date, _id)
• The content of the fs.chunks file (files_id, content, format)

mongofiles Upload to remote database

mongofiles -h ip -d db_name -u user -p password put file_path
mongofiles -h ip -d db_name -u user -p password list

mongofiles Tools are command line development tools