我試圖使用promise-mysql
(節點模塊)連接到一個MySQL實例,但它失敗,並且ECONNREFUSED
。這是整個錯誤:如何獲得有關我的MySQL連接爲何獲得ECONNREFUSED的更多信息?
{ Error: connect ECONNREFUSED 172.18.0.6:3306
at Object.exports._errnoException (util.js:1018:11)
at exports._exceptionWithHostPort (util.js:1041:20)
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1090:14)
--------------------
at Protocol._enqueue (/usr/src/app/node_modules/mysql/lib/protocol/Protocol.js:141:48)
at Protocol.handshake (/usr/src/app/node_modules/mysql/lib/protocol/Protocol.js:52:41)
at Connection.connect (/usr/src/app/node_modules/mysql/lib/Connection.js:130:18)
at connect (/usr/src/app/node_modules/promise-mysql/lib/connection.js:18:33)
at /usr/src/app/node_modules/promise-mysql/lib/connection.js:52:9
at Promise._execute (/usr/src/app/node_modules/bluebird/js/release/debuggability.js:300:9)
at Promise._resolveFromExecutor (/usr/src/app/node_modules/bluebird/js/release/promise.js:483:18)
at new Promise (/usr/src/app/node_modules/bluebird/js/release/promise.js:79:10)
at new connection (/usr/src/app/node_modules/promise-mysql/lib/connection.js:51:12)
at Object.exports.createConnection (/usr/src/app/node_modules/promise-mysql/index.js:6:12)
at Context.<anonymous> (/usr/src/app/test/default-parameters.test.js:9:10)
at callFn (/usr/src/app/node_modules/mocha/lib/runnable.js:345:21)
at Hook.Runnable.run (/usr/src/app/node_modules/mocha/lib/runnable.js:337:7)
at next (/usr/src/app/node_modules/mocha/lib/runner.js:309:10)
at Immediate.<anonymous> (/usr/src/app/node_modules/mocha/lib/runner.js:339:5)
at runCallback (timers.js:666:20)
at tryOnImmediate (timers.js:639:5)
at processImmediate [as _immediateCallback] (timers.js:611:5)
code: 'ECONNREFUSED',
errno: 'ECONNREFUSED',
syscall: 'connect',
address: '172.18.0.6',
port: 3306,
fatal: true }
我不知道爲什麼會發生這種情況。如何獲得有關連接被拒絕的更多信息?
有了「更多信息」我的意思是一樣的東西:
- 這是因爲憑據無效?
- 主機是否無法訪問?
- 主機可以訪問,但MySQL服務器關閉了嗎?
- 我們是否遇到MySQL連接限制?
- 在我的電腦裏有侏儒試圖讓我生氣嗎?