nodejs 应用程序 - mongodb 连接失败，错误为“ECONNREFUSED”
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nodejs application - mongodb connection fails with error "ECONNREFUSED"
提问by dot
Background Information
背景资料
I'm playing around with my first nodejs test app that is attempting to connect to a remote mongodb.
我正在尝试连接到远程 mongodb 的第一个 nodejs 测试应用程序。
Problem:
问题：
The connection is failing with the following message:
连接失败并显示以下消息：
admin@testdev:~/Documents/nodejs_tests$ sudo nodejs index.js
Server has started.
Request for / received
About to route a request for: /
inside db connect method
Request for /favicon.ico received
About to route a request for: /favicon.ico
inside db connect method
MongoError: connect ECONNREFUSED
null
MongoError: connect ECONNREFUSED
null
Here's the logic to connect:
这是连接的逻辑：
function connect_nimble() {
console.log("inside db connect method");
MongoClient.connect("mongodb://10.1.1.1:27017/test", function(err,db) {
console.log(err);
console.log(db);
if(!err) {
console.log("booya! Connected to mongo");
return true;
}
});
}
What I've checked so far:
到目前为止我检查过的内容：
I've made sure that the database server is using port 27017. Here's what I see in the mongodb logs when i restart the database:
admin@mongotest:~$ tail -f /var/log/mongodb/mongod.log 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] db version v3.0.4 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] git version: 0481c958daeb2969800511e7475dc66986fa9ed5 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] build info: Linux ip-10-45-73-23 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] allocator: tcmalloc 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1" }, storage: { dbPath: "/var/lib/mongodb" }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } } **2015-07-21T09:52:41.470-0500 I NETWORK [initandlisten] waiting for connections on port 27017**I've made sure I have a database called "test" by starting "mongo"... and then switching in and out of the test database using the "use test" / "use admin" commands.
I don't believe I have authorization turned on. This is what I have in the mongo.conf file:
我已经确定数据库服务器正在使用端口 27017。这是我在重新启动数据库时在 mongodb 日志中看到的内容：
admin@mongotest:~$ tail -f /var/log/mongodb/mongod.log 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] db version v3.0.4 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] git version: 0481c958daeb2969800511e7475dc66986fa9ed5 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] build info: Linux ip-10-45-73-23 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] allocator: tcmalloc 2015-07-21T09:52:41.452-0500 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1" }, storage: { dbPath: "/var/lib/mongodb" }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } } **2015-07-21T09:52:41.470-0500 I NETWORK [initandlisten] waiting for connections on port 27017**我通过启动“mongo”来确保我有一个名为“test”的数据库......然后使用“use test”/“use admin”命令切换进出测试数据库。
我不相信我已打开授权。这是我在 mongo.conf 文件中的内容：
# Turn on/off security. Off is currently the default #noauth = true #auth = true
# Turn on/off security. Off is currently the default #noauth = true #auth = true
And to prove it, in order to get into the test database on the server via command line, I just have to type "mongo" and then by default, I'm in the test database. So I think I can safely assume I don't have any authentication going on.
为了证明这一点，为了通过命令行进入服务器上的测试数据库，我只需要输入“mongo”，然后默认情况下，我在测试数据库中。所以我想我可以放心地假设我没有进行任何身份验证。
Just in case, I also checked netstat for the port number:
admin@mongotest:~$ sudo netstat -taupen | grep mongo tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 117 6465150 18792mongod
admin@mongotest:~$
以防万一，我还检查了 netstat 的端口号：
admin@mongotest:~$ sudo netstat -taupen | grep mongo tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 117 6465150 18792mongod
admin@mongotest:~$
I'm currently reading the manual to see if there's anything else I should be checking. I'm also reading through the various stackoverflow posts that are similar, but I haven't found me an answer yet.
我目前正在阅读手册，看看是否还有其他需要检查的内容。我也在阅读各种类似的 stackoverflow 帖子，但我还没有找到答案。
Any suggestions?
有什么建议？
采纳答案by tier1
I can see in your logs that Mongo is listening on 127.0.0.1. This is likely your problem. You will have to change the bind-ip address configuration setting to allow Mongo to listen to specific or all IP addresses. You can find how to do this here: Cannot connect to mongodb using machine ip
我可以在您的日志中看到 Mongo 正在侦听 127.0.0.1。这很可能是你的问题。您必须更改绑定 IP 地址配置设置以允许 Mongo 侦听特定或所有 IP 地址。您可以在此处找到如何执行此操作： Cannot connect to mongodb using machine ip
回答by Garytech
Open a terminal.
打开一个终端。
Type mongod &and check the stacktrace.
键入mongod &并检查堆栈跟踪。
This is an example of a failing start
这是一个失败的开始的例子
I STORAGE [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating
I NETWORK [initandlisten] shutdown: going to close listening sockets...
I NETWORK [initandlisten] shutdown: going to flush diaglog...
I CONTROL [initandlisten] now exiting
I STORAGE [initandlisten] exception in initAndListen: 29 Data directory /data/db not found., terminating
I NETWORK [initandlisten] shutdown: going to close listening sockets...
I NETWORK [initandlisten] shutdown: going to flush diaglog...
I CONTROL [initandlisten] now exiting
To fix this, Create the folder /data/db
要解决此问题，请创建文件夹 /data/db
In the terminal, type mkdir /data/db
在终端中，输入 mkdir /data/db
Type againmongod
再次输入mongod
It works !!
有用 ！！
[initandlisten] ** WARNING: Access control is not enabled for the database.
I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
I CONTROL [initandlisten]
I CONTROL [initandlisten]
I CONTROL [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
[initandlisten] ** WARNING: Access control is not enabled for the database.
I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
I CONTROL [initandlisten]
I CONTROL [initandlisten]
I CONTROL [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
