mongodb - 更新角色用户 : not authorized on admin to execute command

Question

当我尝试获取有关副本的信息时，出现以下错误:

rep0:PRIMARY> rs.printReplicationInfo()
2015-05-19T13:30:29.231+0200 error: {
        "$err" : "not authorized for query on local.system.namespaces",
        "code" : 13
} at src/mongo/shell/query.js:131

我尝试用以下两个用户执行命令:

    [
        {
                "_id" : "admin.siteRootAdmin",
                "user" : "siteRootAdmin",
                "db" : "admin",
                "roles" : [
                        {
                                "role" : "root",
                                "db" : "admin"
                        }
                ]
        },
        {
                "_id" : "admin.mongoadmin",
                "user" : "mongoadmin",
                "db" : "admin",
                "roles" : [
                        {
                                "role" : "userAdminAnyDatabase",
                                "db" : "admin"
                        },
                        {
                                "role" : "dbOwner",
                                "db" : "admin"
                        },
                        {
                                "role" : "clusterAdmin",
                                "db" : "admin"
                        }
                ]
        }
]

虽然我有 clusterAdmin 角色来处理副本，但我尝试更新 mongoadmin 的角色以读取本地数据库(因为所有角色都在 admin db 上授予)但我收到以下错误:

rep0:PRIMARY> db.system.users.update({"user":"mongoadmin"},{$addToSet:{"roles":"readAnyDatabase"}})
WriteResult({
        "writeError" : {
                "code" : 13,
                "errmsg" : "not authorized on admin to execute command { update: \"system.users\", updates: [ { q: { user: \"mongoadmin\" }, u: { $addToSet: { roles: \"readAnyDatabase\" } }, multi: false, upsert: false } ], ordered: true }"
        }
})

• 我需要什么才能完全访问所有除了 clusterAdmin 角色之外的副本命令？
• 如果两个用户中的任何一个都拥有 admin db 的权限(mongoadmin 是 dbOwner)，为什么我没有更新命令的权限？

Answer 1

我用错误的命令更新角色，这里是正确的命令:

db.grantRolesToUser( "mongoadmin", [{ role: "read", db: "local"}])

现在我可以检查副本信息了:

rep0:PRIMARY> rs.printReplicationInfo()
configured oplog size:   990MB
log length start to end: 617347secs (171.49hrs)
oplog first event time:  Thu May 14 2015 14:25:04 GMT+0200 (CEST)
oplog last event time:   Thu May 21 2015 17:54:11 GMT+0200 (CEST)
now:                     Thu May 21 2015 17:54:24 GMT+0200 (CEST)