Mac安装Mongodb

用HomeBrew安装mongodb

更新Homebrew的package数据库

brew update

安装mongodb

brew install mongodb

启动mongodb

==> Installing mongodb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-3.4.6.sierra.bottle.tar.gz ######################################################################## 100.0%
==> Pouring mongodb-3.4.6.sierra.bottle.tar.gz
==> Caveats
To have launchd start mongodb now and restart at login:
brew services start mongodb
Or, if you don't want/need a background service you can just run:
mongod --config /usr/local/etc/mongod.conf

可以看出，有两种方式启动mongdb，第二种方法中mongod.conf是mongdb的配置文件，内容如下

systemLog:      //log目录
destination: file
path: /usr/local/var/log/mongodb/mongo.log
logAppend: true
storage:       //db目录
dbPath: /usr/local/var/mongodb
net:           //网络IP地址
bindIp: 127.0.0.1

启动mongodb

funstardeMacBook-Pro:~ funstar$ brew services start mongodb
==> Successfully started `mongodb` (label: homebrew.mxcl.mongodb)
funstardeMacBook-Pro:~ funstar$

连接mongodb

funstardeMacBook-Pro:~ funstar$ mongo
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.6
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com/group/mongodb-user Server has startup warnings:
2017-07-28T00:28:26.653+0800 I CONTROL  [initandlisten]
2017-07-28T00:28:26.655+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-07-28T00:28:26.655+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
>

列出当前数据库

> show dbs
admin  0.000GB
local  0.000GB

创建新的数据库

> use my
switched to db my
> show dbs
admin  0.000GB
local  0.000GB

注意，此时并没有数据库”my”，但仍可以这样使用，只不过mongodb会在真正插入数据后才真正建立这个数据库，从上面代码可以看出数据库”my”并没有建立。

定义一个collection，名为”users”，然后插入数据

> db.users.save({username:"test"}
... )
WriteResult({ "nInserted" : 1 })
> db.users.find()
{ "_id" : ObjectId("597a16b69c7b90a3d9020b86"), "username" : "test" }
> show dbs
admin  0.000GB
local  0.000GB
my     0.000GB
> 

可以看到，此时数据库my才建立起来，利用db.users.find()可以找出已经插入的数据，名为”users”的collection也建立起来了。