服务器选择在 10000 毫秒后超时 - 无法将 Compass 连接到本地主机上的 mongoDB
Server selection timed out after 10000 ms - Cannot connect Compass to mongoDB on localhost
我正在研究 MongoDB 并尝试将 Compass 连接到我本地电脑上的数据库，但每次都在 Compass 上收到错误 "Server selection timed out after 10000 ms"，
这是我终端中的日志：
~$ mongod
2019-09-30T08:51:56.372+0700 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] MongoDB starting : pid=4661 port=27017 dbpath=/data/db 64-bit host=dell
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] db version v4.2.0
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] git version: a4b751dcf51dd249c5865812b390cfd1c0129c30
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.1.1 11 Sep 2018
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] allocator: tcmalloc
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] modules: none
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] build environment:
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] distmod: ubuntu1804
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] distarch: x86_64
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] target_arch: x86_64
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] options: {}
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] Detected data files in /data/db created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten]
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=3427M,cache_overflow=(file_max=0M),session_max=33000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=[recovery_progress,checkpoint_progress],
2019-09-30T08:51:57.030+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:30575][4661:0x7f5edea92b00], txn-recover: Recovering log 4 through 5
2019-09-30T08:51:57.072+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:72698][4661:0x7f5edea92b00], txn-recover: Recovering log 5 through 5
2019-09-30T08:51:57.130+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:130714][4661:0x7f5edea92b00], txn-recover: Main recovery loop: starting at 4/6144 to 5/256
2019-09-30T08:51:57.209+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:209489][4661:0x7f5edea92b00], txn-recover: Recovering log 4 through 5
2019-09-30T08:51:57.292+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:291996][4661:0x7f5edea92b00], txn-recover: Recovering log 5 through 5
2019-09-30T08:51:57.340+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:340285][4661:0x7f5edea92b00], txn-recover: Set global recovery timestamp: (0,0)
2019-09-30T08:51:57.597+0700 I RECOVERY [initandlisten] WiredTiger recoveryTimestamp. Ts: Timestamp(0, 0)
2019-09-30T08:51:57.601+0700 I STORAGE [initandlisten] Timestamp monitor starting
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: This server is bound to localhost.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Remote systems will be unable to connect to this server.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Start the server with --bind_ip <address> to specify which IP
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** addresses it should serve responses from, or with --bind_ip_all to
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** bind to all interfaces. If this behavior is desired, start the
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** server with --bind_ip 127.0.0.1 to disable this warning.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection local.system.replset as collection version: <unsharded>
2019-09-30T08:51:57.681+0700 I STORAGE [initandlisten] Flow Control is enabled on this deployment.
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection admin.system.roles as collection version: <unsharded>
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection admin.system.version as collection version: <unsharded>
2019-09-30T08:51:57.682+0700 I SHARDING [initandlisten] Marking collection local.startup_log as collection version: <unsharded>
2019-09-30T08:51:57.682+0700 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/data/db/diagnostic.data'
2019-09-30T08:51:57.683+0700 I SHARDING [LogicalSessionCacheRefresh] Marking collection config.system.sessions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on /tmp/mongodb-27017.sock
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on 127.0.0.1
2019-09-30T08:51:57.684+0700 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] waiting for connections on port 27017
2019-09-30T08:56:56.140+0700 I NETWORK [listener] connection accepted from 127.0.0.1:59152 #1 (1 connection now open)
2019-09-30T08:56:56.142+0700 I NETWORK [conn1] received client metadata from 127.0.0.1:59152 conn1: { driver: { name: "nodejs-core", version: "3.2.7" }, os: { type: "Linux", name: "linux", architecture: "x64", version: "5.0.0-29-generic" }, platform: "Node.js v10.2.0, LE", application: { name: "MongoDB Compass" } }
2019-09-30T08:56:56.143+0700 I NETWORK [conn1] end connection 127.0.0.1:59152 (0 connections now open)
实际上我看不到任何其他错误，所以我不知道如何google。
如您所见，mongo 收到来自指南针的客户端请求，但它立即关闭
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on /tmp/mongodb-27017.sock
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on 127.0.0.1
2019-09-30T08:51:57.684+0700 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] waiting for connections on port 27017
2019-09-30T08:56:56.140+0700 I NETWORK [listener] connection accepted from 127.0.0.1:59152 #1 (1 connection now open)
2019-09-30T08:56:56.142+0700 I NETWORK [conn1] received client metadata from 127.0.0.1:59152 conn1: { driver: { name: "nodejs-core", version: "3.2.7" }, os: { type: "Linux", name: "linux", architecture: "x64", version: "5.0.0-29-generic" }, platform: "Node.js v10.2.0, LE", application: { name: "MongoDB Compass" } }
2019-09-30T08:56:56.143+0700 I NETWORK [conn1] end connection 127.0.0.1:59152 (0 connections now open)
=
Compass 和 MongoDB 在同一台机器上 运行ning，运行s 在 Ubuntu 18.04
这是我 运行 'mongo' 命令的另一个终端
~$ mongo
MongoDB shell version v4.2.0
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c60d27ad-75d1-4a8c-83c8-6bb5482fd745") }
MongoDB server version: 4.2.0
Server has startup warnings:
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten]
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: This server is bound to localhost.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Remote systems will be unable to connect to this server.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Start the server with --bind_ip <address> to specify which IP
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** addresses it should serve responses from, or with --bind_ip_all to
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** bind to all interfaces. If this behavior is desired, start the
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** server with --bind_ip 127.0.0.1 to disable this warning.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
>
感谢阅读，
看来我必须输入 127.0.0.1 而不是保持默认值，一切正常，
更新：当我在本地主机上连接到我的数据库时卡在慢速连接后，我终于知道在这种情况下发生了什么，
如果我们让hostname是localhost，连接时间会很长（超过10s）所以会导致连接超时
我们要把本地主机改成127.0.0.1，很快就可以了
如果让 Node.js 中的连接字符串是 127.0.0.1 而不是 localhost
，同样的事情也会发生
之前：
The server is running in port 6969 !
DB connection succesful! 10046.88992600143 ms
之后：
The server is running in port 6969!
DB connection succesful! 43.67024099826813 ms
您可以在此处获得更多信息：https://github.com/Automattic/mongoose/issues/6211
Mongoose 文档也提到了这一点：
If connecting fails on your machine, try using 127.0.0.1 instead of localhost.
https://mongoosejs.com/docs/connections.html
我遇到了同样的问题，但经过一些研究后我发现连接字符串需要的是您的用户密码，而不是您的帐户密码。我就是这样解决这个错误的。
我遇到了类似的问题...
但事实证明我不允许我的系统 IP 地址访问数据库或集群。
可以通过导航到网络访问来访问：
有一个简单的解决方案...首先转到您的任务管理器应用程序，如果找不到它只需在搜索栏中搜索任务管理器....然后转到顶部的服务任务管理器中的工具栏然后向下滚动并查找 mongodb ...现在右键单击 mongodb 并单击开始 ..
我使用 NetLimiter 来控制我的网速。毫无疑问，我卸载了它。问题消失了。我不知道原因
就我而言，我必须完全卸载 MongoDB Compass 并安装最新的稳定版本。
删除我的用户并重新创建它们。
最后，我在我的网络设置中为白名单添加了我的 IP 地址。
只有在完成所有这些之后，Compass 才能连接。
我正在研究 MongoDB 并尝试将 Compass 连接到我本地电脑上的数据库，但每次都在 Compass 上收到错误 "Server selection timed out after 10000 ms"，
这是我终端中的日志：
~$ mongod
2019-09-30T08:51:56.372+0700 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] MongoDB starting : pid=4661 port=27017 dbpath=/data/db 64-bit host=dell
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] db version v4.2.0
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] git version: a4b751dcf51dd249c5865812b390cfd1c0129c30
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.1.1 11 Sep 2018
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] allocator: tcmalloc
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] modules: none
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] build environment:
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] distmod: ubuntu1804
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] distarch: x86_64
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] target_arch: x86_64
2019-09-30T08:51:56.377+0700 I CONTROL [initandlisten] options: {}
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] Detected data files in /data/db created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten]
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=3427M,cache_overflow=(file_max=0M),session_max=33000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=[recovery_progress,checkpoint_progress],
2019-09-30T08:51:57.030+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:30575][4661:0x7f5edea92b00], txn-recover: Recovering log 4 through 5
2019-09-30T08:51:57.072+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:72698][4661:0x7f5edea92b00], txn-recover: Recovering log 5 through 5
2019-09-30T08:51:57.130+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:130714][4661:0x7f5edea92b00], txn-recover: Main recovery loop: starting at 4/6144 to 5/256
2019-09-30T08:51:57.209+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:209489][4661:0x7f5edea92b00], txn-recover: Recovering log 4 through 5
2019-09-30T08:51:57.292+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:291996][4661:0x7f5edea92b00], txn-recover: Recovering log 5 through 5
2019-09-30T08:51:57.340+0700 I STORAGE [initandlisten] WiredTiger message [1569808317:340285][4661:0x7f5edea92b00], txn-recover: Set global recovery timestamp: (0,0)
2019-09-30T08:51:57.597+0700 I RECOVERY [initandlisten] WiredTiger recoveryTimestamp. Ts: Timestamp(0, 0)
2019-09-30T08:51:57.601+0700 I STORAGE [initandlisten] Timestamp monitor starting
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: This server is bound to localhost.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Remote systems will be unable to connect to this server.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Start the server with --bind_ip <address> to specify which IP
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** addresses it should serve responses from, or with --bind_ip_all to
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** bind to all interfaces. If this behavior is desired, start the
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** server with --bind_ip 127.0.0.1 to disable this warning.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection local.system.replset as collection version: <unsharded>
2019-09-30T08:51:57.681+0700 I STORAGE [initandlisten] Flow Control is enabled on this deployment.
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection admin.system.roles as collection version: <unsharded>
2019-09-30T08:51:57.681+0700 I SHARDING [initandlisten] Marking collection admin.system.version as collection version: <unsharded>
2019-09-30T08:51:57.682+0700 I SHARDING [initandlisten] Marking collection local.startup_log as collection version: <unsharded>
2019-09-30T08:51:57.682+0700 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/data/db/diagnostic.data'
2019-09-30T08:51:57.683+0700 I SHARDING [LogicalSessionCacheRefresh] Marking collection config.system.sessions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on /tmp/mongodb-27017.sock
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on 127.0.0.1
2019-09-30T08:51:57.684+0700 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] waiting for connections on port 27017
2019-09-30T08:56:56.140+0700 I NETWORK [listener] connection accepted from 127.0.0.1:59152 #1 (1 connection now open)
2019-09-30T08:56:56.142+0700 I NETWORK [conn1] received client metadata from 127.0.0.1:59152 conn1: { driver: { name: "nodejs-core", version: "3.2.7" }, os: { type: "Linux", name: "linux", architecture: "x64", version: "5.0.0-29-generic" }, platform: "Node.js v10.2.0, LE", application: { name: "MongoDB Compass" } }
2019-09-30T08:56:56.143+0700 I NETWORK [conn1] end connection 127.0.0.1:59152 (0 connections now open)
实际上我看不到任何其他错误，所以我不知道如何google。
如您所见，mongo 收到来自指南针的客户端请求，但它立即关闭
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on /tmp/mongodb-27017.sock
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] Listening on 127.0.0.1
2019-09-30T08:51:57.684+0700 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2019-09-30T08:51:57.684+0700 I NETWORK [initandlisten] waiting for connections on port 27017
2019-09-30T08:56:56.140+0700 I NETWORK [listener] connection accepted from 127.0.0.1:59152 #1 (1 connection now open)
2019-09-30T08:56:56.142+0700 I NETWORK [conn1] received client metadata from 127.0.0.1:59152 conn1: { driver: { name: "nodejs-core", version: "3.2.7" }, os: { type: "Linux", name: "linux", architecture: "x64", version: "5.0.0-29-generic" }, platform: "Node.js v10.2.0, LE", application: { name: "MongoDB Compass" } }
2019-09-30T08:56:56.143+0700 I NETWORK [conn1] end connection 127.0.0.1:59152 (0 connections now open)
=
Compass 和 MongoDB 在同一台机器上 运行ning，运行s 在 Ubuntu 18.04
这是我 运行 'mongo' 命令的另一个终端
~$ mongo
MongoDB shell version v4.2.0
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c60d27ad-75d1-4a8c-83c8-6bb5482fd745") }
MongoDB server version: 4.2.0
Server has startup warnings:
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten]
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2019-09-30T08:51:56.377+0700 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** WARNING: This server is bound to localhost.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Remote systems will be unable to connect to this server.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** Start the server with --bind_ip <address> to specify which IP
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** addresses it should serve responses from, or with --bind_ip_all to
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** bind to all interfaces. If this behavior is desired, start the
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten] ** server with --bind_ip 127.0.0.1 to disable this warning.
2019-09-30T08:51:57.672+0700 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
>
感谢阅读，
看来我必须输入 127.0.0.1 而不是保持默认值，一切正常，
更新：当我在本地主机上连接到我的数据库时卡在慢速连接后，我终于知道在这种情况下发生了什么，
如果我们让hostname是localhost，连接时间会很长（超过10s）所以会导致连接超时
我们要把本地主机改成127.0.0.1，很快就可以了
如果让 Node.js 中的连接字符串是 127.0.0.1 而不是 localhost
之前：
The server is running in port 6969 !
DB connection succesful! 10046.88992600143 ms
之后：
The server is running in port 6969!
DB connection succesful! 43.67024099826813 ms
您可以在此处获得更多信息：https://github.com/Automattic/mongoose/issues/6211
Mongoose 文档也提到了这一点：
If connecting fails on your machine, try using 127.0.0.1 instead of localhost. https://mongoosejs.com/docs/connections.html
我遇到了同样的问题，但经过一些研究后我发现连接字符串需要的是您的用户密码，而不是您的帐户密码。我就是这样解决这个错误的。
我遇到了类似的问题...
但事实证明我不允许我的系统 IP 地址访问数据库或集群。
可以通过导航到网络访问来访问：
有一个简单的解决方案...首先转到您的任务管理器应用程序，如果找不到它只需在搜索栏中搜索任务管理器....然后转到顶部的服务任务管理器中的工具栏然后向下滚动并查找 mongodb ...现在右键单击 mongodb 并单击开始 ..
我使用 NetLimiter 来控制我的网速。毫无疑问，我卸载了它。问题消失了。我不知道原因
就我而言，我必须完全卸载 MongoDB Compass 并安装最新的稳定版本。 删除我的用户并重新创建它们。 最后，我在我的网络设置中为白名单添加了我的 IP 地址。 只有在完成所有这些之后，Compass 才能连接。