cPanel Node.js 应用程序无法连接到 MongoDB Atlas 集群，但可以在 Heroku 上运行
cPanel Node.js app cannot connect to MongoDB Atlas cluster but works on Heroku
我用 Node.js 创建了一个网站，该网站使用 MongoDB Atlas 集群作为其数据库。
到目前为止，我在 Heroku 上托管和测试了所有内容，我没有遇到任何问题。
2 天前，我终于决定购买我想要的域名并支付适当的托管费用。
我检查了我的主机服务器上的 Git 存储库，并使用 cPanel -> 软件 -> 设置 Node.js 应用程序工具使我的网站在线。
我使用我签出的存储库作为应用程序根目录，配置了所有环境变量（不在图片上）并执行了 NPM 安装。
但是由于某些原因，我无法与我的 MongoDB 数据库建立连接，即使我将每个 IP 地址 (0.0.0.0/0) 列入白名单也是如此。
这是我的 app.js
中的代码
const connectionString = 'mongodb+srv://' + process.env.MONGODB_USER + ':' + process.env.MONGODB_PW + '@<REDACTED_APP>-y1llv.mongodb.net/<REDACTED_APP>';
mongoose
.connect(connectionString, {
useUnifiedTopology: true,
useNewUrlParser: true,
useFindAndModify: false
})
.then(() => console.log('Database connected.'))
.catch(err => console.log(err));
当我启动我的应用程序并打开 URL 时，出现此错误：
App 793847 output: Server has started successfully.
App 793847 output: MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
App 793847 output: at NativeConnection.Connection.openUri (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongoose/lib/connection.js:830:32)
App 793847 output: at Mongoose.connect (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongoose/lib/index.js:335:15)
App 793847 output: at Object.<anonymous> (/home/<REDACTED_USER>/repositories/<REDACTED_APP>/app.js:29:6)
App 793847 output: at Module._compile (internal/modules/cjs/loader.js:936:30)
App 793847 output: at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
App 793847 output: at Module.load (internal/modules/cjs/loader.js:790:32)
App 793847 output: at Function.Module._load (internal/modules/cjs/loader.js:703:12)
App 793847 output: at Module.require (internal/modules/cjs/loader.js:830:19)
App 793847 output: at Module.require (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:80:25)
App 793847 output: at require (internal/modules/cjs/helpers.js:68:18)
App 793847 output: at loadApplication (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:243:2)
App 793847 output: at setupEnvironment (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:214:2)
App 793847 output: at Object.<anonymous> (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:133:1)
App 793847 output: at Module._compile (internal/modules/cjs/loader.js:936:30)
App 793847 output: at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
App 793847 output: at Module.load (internal/modules/cjs/loader.js:790:32) {
App 793847 output: message: "Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/",
App 793847 output: reason: TopologyDescription {
App 793847 output: type: 'ReplicaSetNoPrimary',
App 793847 output: setName: null,
App 793847 output: maxSetVersion: null,
App 793847 output: maxElectionId: null,
App 793847 output: servers: Map {
App 793847 output: '<REDACTED_APP>-shard-00-00-y1llv.mongodb.net:27017' => [ServerDescription],
App 793847 output: '<REDACTED_APP>-shard-00-02-y1llv.mongodb.net:27017' => [ServerDescription],
App 793847 output: '<REDACTED_APP>-shard-00-01-y1llv.mongodb.net:27017' => [ServerDescription]
App 793847 output: },
App 793847 output: stale: false,
App 793847 output: compatible: true,
App 793847 output: compatibilityError: null,
App 793847 output: logicalSessionTimeoutMinutes: null,
App 793847 output: heartbeatFrequencyMS: 10000,
App 793847 output: localThresholdMS: 15,
App 793847 output: commonWireVersion: null
App 793847 output: }
App 793847 output: }
经过一些搜索后，我发现有些人在他们的连接选项中使用 useUnifiedTopology 标志时遇到问题。当我将其注释掉时，我得到了这个错误：
App 811175 output: Server has started successfully.
App 811175 output: (node:811175) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
App 811175 output: MongoNetworkError: failed to connect to server [<REDACTED_APP>-shard-00-00-y1llv.mongodb.net:27017] on first connect [Error: connect ECONNREFUSED <REDACTED_IP>:27017
App 811175 output: at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) {
App 811175 output: name: 'MongoNetworkError'
App 811175 output: }]
App 811175 output: at Pool.<anonymous> (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/topologies/server.js:438:11)
App 811175 output: at Pool.emit (events.js:209:13)
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/pool.js:562:14
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/pool.js:1009:9
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:31:7
App 811175 output: at callback (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:264:5)
App 811175 output: at TLSSocket.<anonymous> (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:294:7)
App 811175 output: at Object.onceWrapper (events.js:297:20)
App 811175 output: at TLSSocket.emit (events.js:209:13)
App 811175 output: at emitErrorNT (internal/streams/destroy.js:91:8)
App 811175 output: at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
App 811175 output: at processTicksAndRejections (internal/process/task_queues.js:77:11) {
App 811175 output: name: 'MongoNetworkError'
App 811175 output: }
我认为这不是问题，但我可以在 cPanel 工具中配置的最新 Node.js 版本是 12.9.0，而我的应用程序使用的是 12.16.2。我仍然尝试更改 package.json 文件中的引擎字段，但没有结果。
我还注意到 'Server has started successfully.' 日志仅在我打开 URL 后出现在我的 passenger.log 文件中，而不是在我启动应用程序时立即出现（当我调用 'app.listen(port)' 在我的 app.js).
我不知道该去哪里找什么，尤其是因为我的应用程序在 Heroku 上没有任何问题 运行。
这让我认为问题可能出在 cPanel 设置中的某个地方。由于代码和一切都是一样的，这是与 Heroku 最明显的区别，Heroku 不存在 cPanel。也许有一些安全设置阻止我在 cPanel 中建立连接。
我真的希望这里有人知道如何解决这个问题:)
我联系了房东的支持，他们为我打开了 27017 端口。现在一切正常！我要大声疾呼，Namecheap 拥有很棒的实时聊天支持员工。他们查看了我的日志文件和所有内容，非常耐心。
我也联系了他们。
他们不得不打开端口
27017
3000
80
443
我用 Node.js 创建了一个网站，该网站使用 MongoDB Atlas 集群作为其数据库。 到目前为止，我在 Heroku 上托管和测试了所有内容，我没有遇到任何问题。
2 天前，我终于决定购买我想要的域名并支付适当的托管费用。 我检查了我的主机服务器上的 Git 存储库，并使用 cPanel -> 软件 -> 设置 Node.js 应用程序工具使我的网站在线。
我使用我签出的存储库作为应用程序根目录，配置了所有环境变量（不在图片上）并执行了 NPM 安装。
但是由于某些原因，我无法与我的 MongoDB 数据库建立连接，即使我将每个 IP 地址 (0.0.0.0/0) 列入白名单也是如此。
这是我的 app.js
中的代码const connectionString = 'mongodb+srv://' + process.env.MONGODB_USER + ':' + process.env.MONGODB_PW + '@<REDACTED_APP>-y1llv.mongodb.net/<REDACTED_APP>';
mongoose
.connect(connectionString, {
useUnifiedTopology: true,
useNewUrlParser: true,
useFindAndModify: false
})
.then(() => console.log('Database connected.'))
.catch(err => console.log(err));
当我启动我的应用程序并打开 URL 时，出现此错误：
App 793847 output: Server has started successfully.
App 793847 output: MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
App 793847 output: at NativeConnection.Connection.openUri (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongoose/lib/connection.js:830:32)
App 793847 output: at Mongoose.connect (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongoose/lib/index.js:335:15)
App 793847 output: at Object.<anonymous> (/home/<REDACTED_USER>/repositories/<REDACTED_APP>/app.js:29:6)
App 793847 output: at Module._compile (internal/modules/cjs/loader.js:936:30)
App 793847 output: at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
App 793847 output: at Module.load (internal/modules/cjs/loader.js:790:32)
App 793847 output: at Function.Module._load (internal/modules/cjs/loader.js:703:12)
App 793847 output: at Module.require (internal/modules/cjs/loader.js:830:19)
App 793847 output: at Module.require (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:80:25)
App 793847 output: at require (internal/modules/cjs/helpers.js:68:18)
App 793847 output: at loadApplication (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:243:2)
App 793847 output: at setupEnvironment (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:214:2)
App 793847 output: at Object.<anonymous> (/opt/passenger-5.3.7-5.el6.cloudlinux/src/helper-scripts/node-loader.js:133:1)
App 793847 output: at Module._compile (internal/modules/cjs/loader.js:936:30)
App 793847 output: at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
App 793847 output: at Module.load (internal/modules/cjs/loader.js:790:32) {
App 793847 output: message: "Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/",
App 793847 output: reason: TopologyDescription {
App 793847 output: type: 'ReplicaSetNoPrimary',
App 793847 output: setName: null,
App 793847 output: maxSetVersion: null,
App 793847 output: maxElectionId: null,
App 793847 output: servers: Map {
App 793847 output: '<REDACTED_APP>-shard-00-00-y1llv.mongodb.net:27017' => [ServerDescription],
App 793847 output: '<REDACTED_APP>-shard-00-02-y1llv.mongodb.net:27017' => [ServerDescription],
App 793847 output: '<REDACTED_APP>-shard-00-01-y1llv.mongodb.net:27017' => [ServerDescription]
App 793847 output: },
App 793847 output: stale: false,
App 793847 output: compatible: true,
App 793847 output: compatibilityError: null,
App 793847 output: logicalSessionTimeoutMinutes: null,
App 793847 output: heartbeatFrequencyMS: 10000,
App 793847 output: localThresholdMS: 15,
App 793847 output: commonWireVersion: null
App 793847 output: }
App 793847 output: }
经过一些搜索后，我发现有些人在他们的连接选项中使用 useUnifiedTopology 标志时遇到问题。当我将其注释掉时，我得到了这个错误：
App 811175 output: Server has started successfully.
App 811175 output: (node:811175) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
App 811175 output: MongoNetworkError: failed to connect to server [<REDACTED_APP>-shard-00-00-y1llv.mongodb.net:27017] on first connect [Error: connect ECONNREFUSED <REDACTED_IP>:27017
App 811175 output: at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) {
App 811175 output: name: 'MongoNetworkError'
App 811175 output: }]
App 811175 output: at Pool.<anonymous> (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/topologies/server.js:438:11)
App 811175 output: at Pool.emit (events.js:209:13)
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/pool.js:562:14
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/pool.js:1009:9
App 811175 output: at /home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:31:7
App 811175 output: at callback (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:264:5)
App 811175 output: at TLSSocket.<anonymous> (/home/<REDACTED_USER>/nodevenv/repositories/<REDACTED_APP>/12/lib/node_modules/mongodb/lib/core/connection/connect.js:294:7)
App 811175 output: at Object.onceWrapper (events.js:297:20)
App 811175 output: at TLSSocket.emit (events.js:209:13)
App 811175 output: at emitErrorNT (internal/streams/destroy.js:91:8)
App 811175 output: at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
App 811175 output: at processTicksAndRejections (internal/process/task_queues.js:77:11) {
App 811175 output: name: 'MongoNetworkError'
App 811175 output: }
我认为这不是问题，但我可以在 cPanel 工具中配置的最新 Node.js 版本是 12.9.0，而我的应用程序使用的是 12.16.2。我仍然尝试更改 package.json 文件中的引擎字段，但没有结果。
我还注意到 'Server has started successfully.' 日志仅在我打开 URL 后出现在我的 passenger.log 文件中，而不是在我启动应用程序时立即出现（当我调用 'app.listen(port)' 在我的 app.js).
我不知道该去哪里找什么，尤其是因为我的应用程序在 Heroku 上没有任何问题 运行。 这让我认为问题可能出在 cPanel 设置中的某个地方。由于代码和一切都是一样的，这是与 Heroku 最明显的区别，Heroku 不存在 cPanel。也许有一些安全设置阻止我在 cPanel 中建立连接。
我真的希望这里有人知道如何解决这个问题:)
我联系了房东的支持，他们为我打开了 27017 端口。现在一切正常！我要大声疾呼，Namecheap 拥有很棒的实时聊天支持员工。他们查看了我的日志文件和所有内容，非常耐心。
我也联系了他们。 他们不得不打开端口 27017 3000 80 443