小知识：在ubuntu安装mongo db

cd /home/user1
wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.1.tgz
tar -xzvf mongodb-linux-x86_64-3.0.1.tgz/
export PATH=$PATH:/home/user1/mongodb-linux-x86_64-3.0.1/bin

mkdir /home/user1/data
# 也许要加 --smallfiles
mongod --dbpath /home/user1/data

mongo
use admin
db.createUser(
  {
    user: "admin",
    pwd: "abc123",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
  }
)

mongod --auth --dbpath /home/user1/data

db.createUser({
    user: 'admin',
    pwd: 'abc123',
    roles: [{role: 'dbOwner', db: 'leanote'}]
});

mongo -u "admin" -p "abc123" --authenticationDatabase "admin"