MongoDB 基础
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和其他所有数据库一样，权限的管理都差不多一样。mongodb存储所有的用户信息在admin 数据库的集合system.users中，保存用户名、密码和数据库信息。mongodb默认不启用授权认证，只要能连接到该服务器，就可连接到mongod。若要启用安全认证，需要更改配置文件参数auth。
以下测试理解
查看数据库：
show dbs
发现 admin 竟然没有！~
找了好久，找不到相关说明，于是直接创建用户admin
use admin
db.createUser(
{
user: "admin",
pwd: "admin",
roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
}
)
成功创建，再查询admin中的集合，有数据了！
show collections
system.indexes
system.users
system.version
查看3个集合的信息：
db.system.users.find();
{ "_id" : "admin.admin", "user" : "admin", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "cFISfpbm04pmIFpqiL340g==", "storedKey" : "WG1DSEEEHUZUBjsjsnEA4RFVY2M=", "serverKey" : "9Lm+IX6l9kfaE/4C25/ghsQpDkE=" } }, "roles" : [ { "role" : "userAdminAnyDatabase", "db" : "admin" } ] }db.system.indexes.find();
{ "v" : 1, "key" : { "_id" : 1 }, "name" : "id", "ns" : "admin.system.version" }
{ "v" : 1, "key" : { "_id" : 1 }, "name" : "id", "ns" : "admin.system.users" }
{ "v" : 1, "unique" : true, "key" : { "user" : 1, "db" : 1 }, "name" : "user_1_db_1", "ns" : "admin.system.users" }db.system.version.find();
{ "_id" : "authSchema", "currentVersion" : 5 }
现在启用 auth：
[root@localhost ~]# vi /etc/mongod.conf
auth=true
重启 mongod 服务：
[root@localhost ~]# service mongod restart
直接默认登录，查看集合，发现无权操作了：
[root@localhost ~]# mongo
[root@localhost ~]# mongo
MongoDB shell version: 3.0.2
connecting to: test
show dbs
2015-05-09T21:57:03.176-0700 E QUERY Error: listDatabases failed:{
"ok" : 0,
"errmsg" : "not authorized on admin to execute command { listDatabases: 1.0 }",
"code" : 13
}
at Error ()
at Mongo.getDBs (src/mongo/shell/mongo.js:47:15)
at shellHelper.show (src/mongo/shell/utils.js:630:33)
at shellHelper (src/mongo/shell/utils.js:524:36)
at (shellhelp2):1:1 at src/mongo/shell/mongo.js:47
刚才在数据库 admin 创建了一个账户 admin ，先到数据admin进来连接（其他db则失败）：
[root@localhost ~]# mongo
MongoDB shell version: 3.0.2
connecting to: test
db.auth("admin","admin")
Error: 18 Authentication failed.
0
use mydb
switched to db mydb
db.auth("admin","admin")
Error: 18 Authentication failed.
0
use admin
switched to db admin
db.auth("admin","admin")
1
db.auth("admin","admin") 返回值为1，说明登录成功！~db.auth("admin","admin") 记录是不存在的，执行完后这一行在shell中不会记录历史。
所以现在创建另一个用户"myuser"
db.createUser(
{
user: "myuser",
pwd: "myuser",
roles: [ { role: "readWrite", db: "mydb" } ]
}
)
也可以增删角色：
授予角色：db.grantRolesToUser( "userName" , [ { role: "", db: "" } ])
db.grantRolesToUser( "myuser" , [ { role: "dbOwner", db: "mydb" } ])
取消角色：db.grantRolesToUser( "userName" , [ { role: "", db: "" } ])
db.revokeRolesFromUser( "myuser" , [ { role: "readWrite", db: "mydb" } ])
因为在admin数据库创建的，只能在 admin 数据库中登录：
db.auth("myuser","myuser")
Error: 18 Authentication failed.
0db
mydb
use admin
switched to db admin
db.auth("myuser","myuser");
1
此时是可以切换到所在的数据库进行相关操作：
use mydb
switched to db mydbdb.tab.save({"id":999});
WriteResult({ "nInserted" : 1 })db.tab.find({"id":999});
{ "_id" : ObjectId("554ef5ac1b590330c00c7d02"), "id" : 999 }show collections
system.indexes
tab
在创建用户时可以在其数据库中创建，这样不用每次都进入admin数据库登录后再切换。如在数据库"mydb"创建用户"userkk"。
use admin
db.auth("admin","admin")
use mydb
db.createUser(
{
user: "userkk",
pwd: "userkk",
roles: [ { role: "dbOwner", db: "mydb" } ]
}
)
db.auth("userkk","userkk")
华丽分割
现在授权测试：
先访问到admin数据库
use admin
db.auth("admin","admin")
切换到 mydb ，在数据库 mydb 中创建角色
roles: 创建角色"testRole"在数据库 "mydb" 中
privileges: 该角色可查看"find"数据库"mydb"的所有集合
db.dropRole("testRole")
use mydb
db.createRole({
role: "testRole",
privileges: [{ resource: { db: "mydb", collection: "" }, actions: [ "find" ] }],
roles: []
})
在admin数据库生成集合system.roles。查看角色。
use admin
switched to db adminshow collections
system.indexes
system.roles
system.users
system.versiondb.system.roles.find();
{ "_id" : "mydb.testRole", "role" : "testRole", "db" : "mydb", "privileges" : [ { "resource" : { "db" : "mydb", "collection" : "" }, "actions" : [ "find" ] } ], "roles" : [ ] }
回到mydb，在数据库mydb中创建用户并授予角色"testRole"
db.dropUser("userkk")
use mydb
db.createUser(
{
user: "userkk",
pwd: "userkk",
roles: [ { role: "testRole", db: "mydb" } ]
}
)
退出mongodb，重新登录进行操作。发现只能使用find
exit
[root@localhost ~]# mongo
MongoDB shell version: 3.0.2
connecting to: test
use mydb
switched to db mydbdb.auth("userkk","userkk")
1db.tab.find({"id":999})
{ "_id" : ObjectId("554ef5ac1b590330c00c7d02"), "id" : 999 }db.tab.insert({"id":1000})
WriteResult({
"writeError" : {
"code" : 13,
"errmsg" : "not authorized on mydb to execute command { insert: "tab", documents: [ { _id: ObjectId('554f145cdf782b42499d80e5'), id: 1000.0 } ], ordered: true }"
}
})
给角色 "testRole" 添加3个 “Privileges”权限： "update", "insert", "remove"。再重新操作。
use admin
db.auth("admin","admin")
use mydb
添加Privileges给角色
db.grantPrivilegesToRole("testRole",
[{ resource: { db: "mydb", collection: "" },actions: [ "update", "insert", "remove" ]}
])
exit #退出mongodb重新登录
use mydb
db.auth("userkk","userkk")
增删数据可以操作了！~
db.tab.insert({"id":1000})
db.tab.find({"id":1000})
db.tab.remove({"id":1000})
此时admin的角色记录为：
db.system.roles.find();
{ "_id" : "mydb.testRole", "role" : "testRole", "db" : "mydb", "privileges" : [ { "resource" : { "db" : "mydb", "collection" : "" }, "actions" : [ "find", "insert", "remove", "update" ] } ], "roles" : [ ] }
更改角色 roles，把roles值全部更新。同样Privileges也可以更新替换！~
use admin
db.auth("admin","admin")
use mydb
db.updateRole("testRole",{ roles:[{ role: "readWrite",db: "mydb"}]},{ w:"majority" })
db.auth("userkk","userkk")
show dbs
关于角色，参考官方文档提取总结如下：
角色分类
角色
权限及角色
（本文大小写可能有些变化，使用时请参考官方文档）
Database User Roles
read
CollStats,dbHash,dbStats,find,killCursors,listIndexes,listCollections
readWrite
CollStats,ConvertToCapped,CreateCollection,DbHash,DbStats,
DropCollection,CreateIndex,DropIndex,Emptycapped,Find,
Insert,KillCursors,ListIndexes,ListCollections,Remove,
RenameCollectionSameDB,update
Database Administration Roles
dbAdmin
collStats,dbHash,dbStats,find,killCursors,listIndexes,listCollections,
dropCollection 和 createCollection 在 system.profile
dbOwner
角色：readWrite, dbAdmin,userAdmin
userAdmin
ChangeCustomData,ChangePassword,CreateRole,CreateUser,
DropRole,DropUser,GrantRole,RevokeRole,ViewRole,viewUser
Cluster Administration Roles
clusterAdmin
角色：clusterManager, clusterMonitor, hostManager
clusterManager
AddShard,ApplicationMessage,CleanupOrphaned,FlushRouterConfig,
ListShards,RemoveShard,ReplSetConfigure,ReplSetGetStatus,
ReplSetStateChange,Resync,
EnableSharding,MoveChunk,SplitChunk,splitVector
clusterMonitor
connPoolStats,cursorInfo,getCmdLineOpts,getLog,getParameter,
getShardMap,hostInfo,inprog,listDatabases,listShards,netstat,
replSetGetStatus,serverStatus,shardingState,top
collStats,dbStats,getShardVersion
hostManager
applicationMessage,closeAllDatabases,connPoolSync,cpuProfiler,
diagLogging,flushRouterConfig,fsync,invalidateUserCache,killop,
logRotate,resync,setParameter,shutdown,touch,unlock
Backup and Restoration Roles
backup
提供在admin数据库mms.backup文档中insert,update权限
列出所有数据库：listDatabases
列出所有集合索引：listIndexes
对以下提供查询操作：find
*非系统集合
*系统集合：system.indexes, system.namespaces, system.js
*集合：admin.system.users 和 admin.system.roles
restore
非系统集合、system.js，admin.system.users 和 admin.system.roles 及2.6 版本的system.users提供以下权限：
collMod,createCollection,createIndex,dropCollection,insert
列出所有数据库：listDatabases
system.users ：find,remove,update
All-Database Roles
readAnyDatabase
提供所有数据库中只读权限：read
列出集群所有数据库：listDatabases
readWriteAnyDatabase
提供所有数据库读写权限：readWrite
列出集群所有数据库：listDatabases
userAdminAnyDatabase
提供所有用户数据管理权限：userAdmin
Cluster：authSchemaUpgrade,invalidateUserCache,listDatabases
admin.system.users和admin.system.roles：
collStats,dbHash,dbStats,find,killCursors,planCacheRead
createIndex,dropIndex
dbAdminAnyDatabase
提供所有数据库管理员权限：dbAdmin
列出集群所有数据库：listDatabases
Superuser Roles
root
角色：dbOwner，userAdmin，userAdminAnyDatabase
readWriteAnyDatabase, dbAdminAnyDatabase,
userAdminAnyDatabase，clusterAdmin
Internal Role
__system
集群中对任何数据库采取任何操作