a lot

mongodb/auth.md

@@ -5,11 +5,32 @@ $ mongo
 > show dbs
 > use admin
 > db.createUser({
-    user: "light",
-    pwd: "123456",
+    user: "root",
+    pwd: "root",
     roles: [ { role: "userAdminAnyDatabase", db: "admin" }]
   }
 )
+
+use test
+db.createUser(
+  {
+    user: "tester",
+    pwd: "xyz123",
+    roles: [ { role: "readWrite", db: "test" },
+             { role: "read", db: "reporting" } ]
+  }
+)
+
+roles:
+readWrite
+read
+
+readAnyDatabase 任何数据库的只读权限
+
+readWriteAnyDatabase 任何数据库的读写权限
+
+userAdminAnyDatabase 任何数据库用户的管理权限
+dbAdminAnyDatabase 任何数据库的管理权限
 ```
 
 # role 

mongodb/use.md

@@ -0,0 +1,16 @@
+# mongodb 一般使用命令
+
+``` bash
+sudo service mongod restart
+
+
+```
+
+``` mongodb
+
+use admin
+
+db.system.users.find()
+db.system.users.remove({}) 
+
+```