mongoDB相关知识

1. 常用操作

1.1 修改密码

• 首先用原账号密码登录。
• 在通过db.changeUserPassword修改密码。

[root@localhost ~]# docker exec -it mongodb /bin/bash
root@93d0002a2f65:/# mongosh
Current Mongosh Log ID: 64b4909af6f5b1620fdc058d
Connecting to:          mongodb://127.0.0.1:27017/?directConnection=true&serverSelectionTimeoutMS=2000&appName=mongosh+1.10.1
Using MongoDB:          6.0.8
Using Mongosh:          1.10.1

For mongosh info see: https://docs.mongodb.com/mongodb-shell/

test> use admin
switched to db admin
admin> db.changeUserPassword('xxxx','123456')
MongoServerError: command updateUser requires authentication
admin> db.auth("xxxx","dba.123456")
{
    
     ok: 1 }
admin> db.changeUserPassword('xxxx','123456')
{
    
     ok: 1 }
admin>

1.2 删除数据库

• windows下mongDB通过下面命令行进入

D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\bin>mongod.exe --dbpath D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\data\db

• 上面命令行的窗口不关，通过cmd重启一个窗口输入mongo
  
• 删除操作， 没删除成功，admin数据库好像不能删除

> show dbs
admin        0.000GB
config       0.000GB
local        0.000GB
mongdb_test  0.000GB
> use admin
switched to db admin
> db.dropDatabase()
{
    
    
        "ok" : 0,
        "errmsg" : "Dropping the 'admin' database is prohibited.",
        "code" : 20,
        "codeName" : "IllegalOperation"
}
> show dbs
admin        0.000GB
config       0.000GB
local        0.000GB
mongdb_test  0.000GB

但是可以删除其它的

D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\bin>mongo 192.168.3.13:27017
MongoDB shell version v3.6.23-8-gc2609ed3ed
connecting to: mongodb://192.168.3.13:27017/test?gssapiServiceName=mongodb
Implicit session: session {
    
     "id" : UUID("4d847aa7-6b6b-4dfb-ac6e-7fd9fcacb95b") }
MongoDB server version: 3.6.23-8-gc2609ed3ed
Server has startup warnings:
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten]
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten]
> show dbs
admin        0.000GB
local        0.000GB
mongdb_test  0.000GB
> use local
switched to db local
> db.dropDatabase()
{
    
     "dropped" : "local", "ok" : 1 }
>

1.3 启动

• 在mongoDB的安装目录-bin目录下，以管理员身份启动cmd，在其中输入“net start net start MongoDB”

2. 问题集

2.1 如何远程访问mongDB数据库

1. 服务器A ip: 192.168.3.13。 已装有MongoDB。数据在这台上面
   服务器B ip: 192.168.3.5。
2. 核心在下面的的“–bind_ip”

.\mongod.exe --bind_ip 192.168.3.13 --port 27017 --config D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\etc\mongodb.conf --dbpath=D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\data\db"

3. 在开一个cmd输入mongo 192.168.3.13:27017，即可访问mongoDB

D:\mongodb\mongodb-win32-x86_64-2008plus-ssl-3.6.23-8-gc2609ed3ed\bin>mongo 192.168.3.13:27017
MongoDB shell version v3.6.23-8-gc2609ed3ed
connecting to: mongodb://192.168.3.13:27017/test?gssapiServiceName=mongodb
Implicit session: session {
    
     "id" : UUID("ab5c7e95-4b79-437d-9f9a-ea0ba12f0b78") }
MongoDB server version: 3.6.23-8-gc2609ed3ed
Server has startup warnings:
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten]
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2023-07-09T16:47:02.248+0800 I CONTROL  [initandlisten]
>

2.2 由于widows安全策略，linux访问不到windows的mongDB

• 首先在“控制面板\系统和安全\Windows Defender 防火墙-高级设置-新建规则-端口-tcp-特定本地端口号选择27017”
• 在linux使用telnet 192.168.3.13 27017，其中192.168.3.13是我win的IP显示如下表示可以访问。