1.使用Homebrew軟件包管理工具安裝

brew 又叫Homebrew，是Mac OSX上的軟件包管理工具，能在Mac中方便的安裝或者卸載軟件，類似于ubuntu系統(tǒng)下的apt-get

• 如果你的系統(tǒng)中尚未安裝Homebrew，那就先裝好Homebrew:
  在終端輸入如下命令即可
  ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"

• 裝好brew后先對它進行更新
  brew update

• 接下來開始安裝mongodb
  brew install mongodb

• 安裝完成會提示如下結(jié)果：

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

• 輸入 brew services start mongodb 啟動mongodb，如果啟動成功，就會提示如下信息：

Successfully started mongodb (label: homebrew.mxcl.mongodb)

• 最后，輸入mongo進入mongodb，提示如下信息就表示一切順利~

MongoDB shell version: 3.2.11
connecting to: test
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