mongodb roles

system.roles集合删不掉

当你自定义了特权(角色):db.createRole(   {     role: "dropSystemViewsAnyDatabase",     privileges: [       {         actions: [ "dropCollection" ],         resource: { db: "", collection: "system.roles" }       }     ],     roles: []   })// admin库下自动生成system.roles集合:{    "_id" : "admin.dropSystemViewsAnyDatabase",    "role" : "dropSystemViewsAnyDatabase",    "db" : "admin",    "privileges" : [         {            "resource" : {                "db" : "",                "collection" : "system.roles"            },            "actions" : [                 "dropCollection"            ]        }    ],    "roles" : []}// 然后期望配置该权限能删除system.roles集合,但是并没有用,不得而知{    "_id" : "admin.admin",    "userId" : UUID("198fe62e-8f36-421e-877e-4d73ca1a1fe4"),    "user" : "admin",    "db" : "admin",    "credentials" : {        "SCRAM-SHA-1" : {            "iterationCount" : 10000,            "salt" : "rmYnVC/Kc8U8jHJ8Xoa0AA==",            "storedKey" : "s2s+seXTlu5e/Et3RBMRjcT+1sc=",            "serverKey" : "qwEGx4vyIn6UHWXiPwDYVSAb9QA="        },        "SCRAM-SHA-256" : {            "iterationCount" : 15000,            "salt" : "UEJ8pbH7IU7HFyhjjQCn31h2OY5GjZ6SXONgjw==",            "storedKey" : "z6otQQpA4/SU5N6VJfuD3mm68kBH0z+5aKIexmgXaP4=",            "serverKey" : "MdeLFLQOh7gM93WrNioub9UjLSc8SREDQZskfT7wiYQ="        }    },    "roles" : [         {            "role" : "root", // 该权限可以读写除了system.*之外的所有            "db" : "admin"        },         {            "role" : "__system", // 该权限可以读写system.*            "db" : "admin"        },         {            "role" : "dropSystemViewsAnyDatabase",// 配置了自定义的权限,但是并没有用,不得而知            "db" : "admin"        }    ]}

ps:就算取消了登录授权依然删不掉system.role,有哪个同学晓得啊???