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查看日志，发现有一句： Failed to authenticate admin@admin with mechanism MONGODB-CR: AuthenticationFailed MONGODB-CR credentials missing in the user document 3.0.3以前版本是ok的。 1.首先删除所有用户db.dropUser("xxx"); 2.退出mongodb，无auth启动 3.创建超级用户，不是root哦，root无法操作system开头的， 是 __system 超级角色 > use admin switched to db admin > db.createUser( ... { ... user: "xxx", ... pwd: "xxx", ... roles: [ { role: "__system", db: "admin" } ] ... } ... ) Successfully added user: { "user" : "maclean_dbdao2", "roles" : [ { "role" : "__system", "db" : "admin" } ] } 4.修改system.version文档里面的authSchema版本为3，初始安装时候应该是5，命令行如下： > use admin switched to db admin > var schema = db.system.version.findOne({"_id" : "authSchema"}) > schema.currentVersion = 3 3 > db.system.version.save(schema) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) 5.重启服务，ok http://21jhf.iteye.com/blog/2216103 http://liyanjie918.blog.163.com/blog/static/2022729020156261410274/ http://www.sufeinet.com/thread-11978-1-1.html http://www.tuicool.com/articles/fMZbUzu

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