Python学习日志8：MongoDB安装使用（Mac OS）

一、下载安装
https://www.mongodb.com/download-center#community

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或者选用官网推荐的
Instructions for installing with Homebrew

接下来我们使用 curl 命令来下载安装：

# 进入 /usr/local 本地地址随意
cd /usr/local
# 下载 根据你所需要的版本
sudo curl -O https://fastdl.mongodb.org/osx/mongodb-osx-x86_64-3.4.2.tgz
# 解压
sudo tar -zxvf mongodb-osx-x86_64-3.4.2.tgz
# 重命名为 mongodb 目录
sudo mv mongodb-osx-x86_64-3.4.2 mongodb
安装完成后，我们可以把 MongoDB 的二进制命令文件目录（安装目录/bin）添加到 PATH 路径中：
export PATH=/usr/local/mongodb/bin:$PATH

brew只要一步

$sudo brew install mongodb

==> Pouring mongodb-3.6.5.high_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
==> Summary
  /usr/local/Cellar/mongodb/3.6.5: 19 files, 297.9MB

二、创建数据库db文件夹
默认是/data/db 你也可以到mongo.conf里去自定义，vi /usr/local/etc/mongod.conf

$sudo mkdir -p /data/db

三、启动MongoDB
需要先启动服务，不然会出现错误
[thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: Connection refused
[thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed

$brew services start mongodb
$mongod

四、运行MongoDB

$mongo

出现

MongoDB shell version v3.6.5
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.6.5
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

五、在使用时候引入pymongo

import pymongo