我正在连接到MongoDB Atlas，并收到身份验证失败错误。
这是我的连接字符串：
mongodb://user:<password>@mongo-cluster-shard-00-00-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-01-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-02-ixqtu.mongodb.net:27017/test?ssl=true&replicaSet=mongo-cluster-shard-0&authSource=admin&retryWrites=true
这就是我得到的：
------------------------------------------------
Mongoose connection "error" event fired with:
{ MongoError: authentication fail
at Function.MongoError.create (/mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/error.js:31:11)
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/topologies/replset.js:1245:38
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:760:7
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:736:20
at finish (/mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/auth/scram.js:168:16)
at handleEnd (/mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/auth/scram.js:178:7)
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/auth/scram.js:269:11
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:469:18
at process._tickCallback (internal/process/next_tick.js:61:11)
name: 'MongoError',
message: 'authentication fail',
errors:
[ { name: 'mongo-cluster-shard-00-01-ixqtu.mongodb.net:27017',
err: [Error] },
{ name: 'mongo-cluster-shard-00-00-ixqtu.mongodb.net:27017',
err: [Error] } ] }
Error: KeystoneJS (Keystone Demo) failed to start - Check that you are running `mongod` in a separate process.
at NativeConnection.<anonymous> (/mnt/c/WEB/keystone-md2/node_modules/keystone/lib/core/openDatabaseConnection.js:62:10)
at NativeConnection.emit (events.js:189:13)
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/lib/connection.js:824:17
at connectCallback (/mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb/lib/mongo_client.js:527:5)
at /mnt/c/WEB/keystone-md2/node_modules/mongoose/node_modules/mongodb/lib/mongo_client.js:459:13
at process._tickCallback (internal/process/next_tick.js:61:11)
答案 0 :(得分：1)
您必须将user和password放在连接uri字符串中
mongodb://***'your user':' here comes password '***@mongo-cluster-shard-00-00-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-01-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-02-ixqtu.mongodb.net:27017/test?ssl=true&replicaSet=mongo-cluster-shard-0&authSource=admin&retryWrites=true
例如
mongodb://dbuser:dbpassword@mongo-cluster-shard-00-00-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-01-ixqtu.mongodb.net:27017,mongo-cluster-shard-00-02-ixqtu.mongodb.net:27017/test?ssl=true&replicaSet=mongo-cluster-shard-0&authSource=admin&retryWrites=true
答案 1 :(得分：1)
我也面临这个问题。但是一个小时后，我知道我使用了process.env变量作为用户名和密码。并在.env文件中声明它们。但是我忘了在代码中配置dotenv软件包。
因此请确保您没有犯这种愚蠢的错误。
有关更多信息，请遍历此节点存储库文档。 https://www.npmjs.com/package/dotenv
答案 2 :(得分：0)
问题是我在连接字符串中留下了<>。您必须删除那些才能进行身份验证。
答案 3 :(得分：0)
我有一个类似的错误，但是连接到新的Atlas数据库。即使我确实按照此处和文档中的说明正确设置了用户名和密码（显然，我用正确的MLAB密码替换了PASSWORD：
var mongoURI = 'mongodb+srv://heroku_3kcdl3j9:PASSWORD@cluster-3kcdl3j9.auof1.mongodb.net/heroku_3kcdl3j9?retryWrites=true&w=majority';
我已将数据库从MLAB迁移到Atlas，已成功将正确的网络访问设置设置为0.0.0.0 IP地址。在Heroku中设置环境变量。但仍然出现此错误：
{ MongoError: authentication fail
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/topologies/replset.js:1462:15
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:868:7
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:844:20
at finish (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:232:16)
at handleEnd (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:242:7)
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:351:15
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:531:18
at process._tickCallback (internal/process/next_tick.js:61:11)
name: 'MongoError',
message: 'authentication fail',
errors:
[ { name: 'cluster-3kcdl3j9-shard-00-01.auof1.mongodb.net:27017',
err: [MongoError] },
{ name: 'cluster-3kcdl3j9-shard-00-00.auof1.mongodb.net:27017',
err: [MongoError] },
{ name: 'cluster-3kcdl3j9-shard-00-02.auof1.mongodb.net:27017',
err: [MongoError] } ],
[Symbol(mongoErrorContextSymbol)]: {} }
(node:47015) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 's' of undefined
at Admin.buildInfo (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb/lib/admin.js:100:37)
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/index.js:95:13
at $initialConnection.then.err (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongoose/lib/connection.js:556:14)
at process._tickCallback (internal/process/next_tick.js:68:7)
(node:47015) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:47015) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:47015) UnhandledPromiseRejectionWarning: MongoError: authentication fail
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/topologies/replset.js:1462:15
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:868:7
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:844:20
at finish (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:232:16)
at handleEnd (/Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:242:7)
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/auth/scram.js:351:15
at /Users/bensmith/Downloads/DocumentsDirNew/Scraper and API/diveapi/node_modules/mongodb-core/lib/connection/pool.js:531:18
at process._tickCallback (internal/process/next_tick.js:61:11)
(node:47015) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
答案 4 :(得分：0)
我遇到了类似的错误，就我而言，问题是我在“安全 -> 网络访问”页面的“IP 访问列表”中添加（列入白名单）错误的 IP 地址。