mongodbはschemeless

naming

RDB	mongo
table	collection
row	document
column	field

command

$ mongo
$ mongo (database name) -u (user name) -p

command in mongo

show databases

show dbs;

show collections

use (database name);
db.getCollectionNames();

field見るにはfindで

create an user

db.createUser({user: “user”, pwd: “password”, roles:[{ “role”: “userAdminAnyDatabase”, “db”: “admin”}]});

show users

use admin;
db.system.users.find();

insert data

schemelessのためcollectionをcreateとかしなくていい

collection aaa に insert
db.aaa.insert({name: ‘hey’, gender: ’m’});

find data

db.aaa.find();
db.aaa.find({gender: ’m’});

remove data

db.aaa.find({gender: ’m’});

docker

image: mongo

docker-compose

version: '2'
services:
  mongo:
    container_name: mongo
    image: mongo
    ports:
    - "27017:27017"
    volumes:
    - ./mongo/data:/data/db
    - ./mongo/init/:/docker-entrypoint-initdb.d/
    environment:
    - MONGO_INITDB_DATABASE=fluentd

MONGO_INITDB_DATABASE is the database where initial script creates users.
(see /docker-entry.point in the container)

data is preserved in ./mongo/data

initialize script is in ./mongo/init

var newUsers = [
  {
		user: 'logger',
		pwd: 'password',
		roles: [
			{
				role: 'readWrite',
				db: 'fluentd'
			}
		]
	}
];

var currentUsers = db.getUsers();
if (currentUsers.length === newUsers.length) {
	quit();
}
db.dropAllUsers();

for (var i = 0, length = newUsers.length; i < length; ++i) {
	db.createUser(newUsers[i]);
}

refference: fluentd + MongoDB でログサーバー構築 - Qiita