无法连接到远程服务器上的 mongo
Unable to connect to mongo on remote server
我已经在本地网络的 machine1(Ubuntu 14.04.3 LTS server) 上安装了 mongo。我还使用以下命令打开 27017 端口，如 this 指南中所述：
sudo iptables -A INPUT -p tcp --destination-port 27017 -m state --state NEW,ESTABLISHED -j ACCEPT
sudo iptables -A OUTPUT -p tcp --source-port 27017 -m state --state ESTABLISHED -j ACCEPT
当前规则是 (iptables -L):
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:27017 state NEW,ESTABLISHED
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp spt:27017 state ESTABLISHED
但我无法从机器 2（在同一网络中）连接到此端口：
$ mongo --host 192.168.0.108
MongoDB shell version: 3.0.4
connecting to: 192.168.0.108:27017/test
2016-01-23T18:02:14.848+0530 W NETWORK Failed to connect to 192.168.0.108:27017, reason: errno:61 Connection refused
2016-01-23T18:02:14.850+0530 E QUERY Error: couldn't connect to server 192.168.0.108:27017 (192.168.0.108), connection attempt failed
at connect (src/mongo/shell/mongo.js:181:14)
at (connect):1:6 at src/mongo/shell/mongo.js:181
exception: connect failed
我也试过检查端口是否打开：
$ nc -v 192.168.0.108 27017
nc: connectx to 192.168.0.108 port 27017 (tcp) failed: Connection refused
我不确定我错过了什么。一定是一些愚蠢的错误，因为我是第一次设置 mongo。请帮助。
更新（针对当前回答中提出的疑惑）
- 是的 运行。我可以从同一台机器连接到 mongo，但不能从另一台机器连接。守护进程是 运行:
$ service mongod status mongod start/running, process 31205 端口是 27017 $ sudo netstat -tulpn |grep 27017 tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 31205/mongod
- 我将
bind_ip 更改为 0.0.0.0 并重新启动 mongo。仍然出现同样的错误。
Mongo 日志:
$ cat /var/log/mongodb/mongod.log
2016-01-23T16:28:13.155+0530 I CONTROL [initandlisten] MongoDB starting : pid=31205 port=27017 dbpath=/var/lib/mongodb 64-bit host=dexter
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] db version v3.2.1
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] git version: a14d55980c2cdc565d4704a7e3ad37e4e535c1b2
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] allocator: tcmalloc
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] modules: none
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] build environment:
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] distmod: ubuntu1404
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] distarch: x86_64
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] target_arch: x86_64
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } }
2016-01-23T16:28:13.173+0530 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
2016-01-23T16:28:14.444+0530 I NETWORK [HostnameCanonicalizationWorker] Starting hostname canonicalization worker
2016-01-23T16:28:14.949+0530 I NETWORK [initandlisten] waiting for connections on port 27017
2016-01-23T16:38:37.046+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37032 #1 (1 connection now open)
2016-01-23T16:39:31.447+0530 I NETWORK [conn1] end connection 127.0.0.1:37032 (0 connections now open)
2016-01-23T16:49:24.240+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37033 #2 (1 connection now open)
2016-01-23T16:49:38.249+0530 I NETWORK [conn2] end connection 127.0.0.1:37033 (0 connections now open)
2016-01-23T16:51:51.707+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37034 #3 (1 connection now open)
2016-01-23T16:51:55.785+0530 I NETWORK [conn3] end connection 127.0.0.1:37034 (0 connections now open)
2016-01-23T17:32:15.546+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37036 #4 (1 connection now open)
2016-01-23T17:32:21.180+0530 I NETWORK [conn4] end connection 127.0.0.1:37036 (0 connections now open)
2016-01-23T18:11:57.885+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37037 #5 (1 connection now open)
2016-01-23T18:29:55.365+0530 I NETWORK [conn5] end connection 127.0.0.1:37037 (0 connections now open)
确保您的 machine1 上有守护程序 运行，它侦听端口 27017。我们遇到了同样的错误，发现守护程序不是 运行。
确保 mongodb 守护进程是 运行，并监听 0.0.0.0，而不是 127.0.0.1 端口
例如，对于我的本地 mongodb，它具有以下配置：
[vodolaz095@steel ~]$ cat /etc/mongod.conf
##
### Basic Defaults
##
# Comma separated list of ip addresses to listen on (all local ips by default)
bind_ip = 127.0.0.1
# Specify port number (27017 by default)
#port = 27017
为mongodb服务器监听远程连接，可以更改
# Comma separated list of ip addresses to listen on (all local ips by default)
bind_ip = 0.0.0.0
问题 bindIp 没有改变。从我这边重新启动 mongo 时出现了一些问题。
习惯应该是验证bindIp是否真的改变了。 （使用 sudo netstat -tulpn | grep 27017）
使用 mongoDB 服务器版本 3.6.4，Ubuntu 16.4.4 我通过在 /etc/mongod.conf 中设置网络部分解决了这个问题，如下所示：
net:
port: 27017
bindIpAll: true
# bindIp: 127.0.0.1
我尝试了不同的方法来解决这个问题。我已经从
更改了配置文件
bind_ip = 127.0.0.1
#port = 27017
到
bind_ip = 0.0.0.0
#port = 27017
希望对您有所帮助。编码愉快 ;)
我已经在本地网络的 machine1(Ubuntu 14.04.3 LTS server) 上安装了 mongo。我还使用以下命令打开 27017 端口，如 this 指南中所述：
sudo iptables -A INPUT -p tcp --destination-port 27017 -m state --state NEW,ESTABLISHED -j ACCEPT
sudo iptables -A OUTPUT -p tcp --source-port 27017 -m state --state ESTABLISHED -j ACCEPT
当前规则是 (iptables -L):
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:27017 state NEW,ESTABLISHED
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp spt:27017 state ESTABLISHED
但我无法从机器 2（在同一网络中）连接到此端口：
$ mongo --host 192.168.0.108
MongoDB shell version: 3.0.4
connecting to: 192.168.0.108:27017/test
2016-01-23T18:02:14.848+0530 W NETWORK Failed to connect to 192.168.0.108:27017, reason: errno:61 Connection refused
2016-01-23T18:02:14.850+0530 E QUERY Error: couldn't connect to server 192.168.0.108:27017 (192.168.0.108), connection attempt failed
at connect (src/mongo/shell/mongo.js:181:14)
at (connect):1:6 at src/mongo/shell/mongo.js:181
exception: connect failed
我也试过检查端口是否打开：
$ nc -v 192.168.0.108 27017
nc: connectx to 192.168.0.108 port 27017 (tcp) failed: Connection refused
我不确定我错过了什么。一定是一些愚蠢的错误，因为我是第一次设置 mongo。请帮助。
更新（针对当前回答中提出的疑惑）
- 是的 运行。我可以从同一台机器连接到 mongo，但不能从另一台机器连接。守护进程是 运行:
$ service mongod status mongod start/running, process 31205端口是 27017$ sudo netstat -tulpn |grep 27017 tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 31205/mongod - 我将
bind_ip更改为0.0.0.0并重新启动 mongo。仍然出现同样的错误。
Mongo 日志:
$ cat /var/log/mongodb/mongod.log
2016-01-23T16:28:13.155+0530 I CONTROL [initandlisten] MongoDB starting : pid=31205 port=27017 dbpath=/var/lib/mongodb 64-bit host=dexter
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] db version v3.2.1
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] git version: a14d55980c2cdc565d4704a7e3ad37e4e535c1b2
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] allocator: tcmalloc
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] modules: none
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] build environment:
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] distmod: ubuntu1404
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] distarch: x86_64
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] target_arch: x86_64
2016-01-23T16:28:13.156+0530 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } }
2016-01-23T16:28:13.173+0530 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2016-01-23T16:28:14.444+0530 I CONTROL [initandlisten]
2016-01-23T16:28:14.444+0530 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
2016-01-23T16:28:14.444+0530 I NETWORK [HostnameCanonicalizationWorker] Starting hostname canonicalization worker
2016-01-23T16:28:14.949+0530 I NETWORK [initandlisten] waiting for connections on port 27017
2016-01-23T16:38:37.046+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37032 #1 (1 connection now open)
2016-01-23T16:39:31.447+0530 I NETWORK [conn1] end connection 127.0.0.1:37032 (0 connections now open)
2016-01-23T16:49:24.240+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37033 #2 (1 connection now open)
2016-01-23T16:49:38.249+0530 I NETWORK [conn2] end connection 127.0.0.1:37033 (0 connections now open)
2016-01-23T16:51:51.707+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37034 #3 (1 connection now open)
2016-01-23T16:51:55.785+0530 I NETWORK [conn3] end connection 127.0.0.1:37034 (0 connections now open)
2016-01-23T17:32:15.546+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37036 #4 (1 connection now open)
2016-01-23T17:32:21.180+0530 I NETWORK [conn4] end connection 127.0.0.1:37036 (0 connections now open)
2016-01-23T18:11:57.885+0530 I NETWORK [initandlisten] connection accepted from 127.0.0.1:37037 #5 (1 connection now open)
2016-01-23T18:29:55.365+0530 I NETWORK [conn5] end connection 127.0.0.1:37037 (0 connections now open)
确保您的 machine1 上有守护程序 运行，它侦听端口 27017。我们遇到了同样的错误，发现守护程序不是 运行。
确保 mongodb 守护进程是 运行，并监听 0.0.0.0，而不是 127.0.0.1 端口
例如，对于我的本地 mongodb，它具有以下配置：
[vodolaz095@steel ~]$ cat /etc/mongod.conf
##
### Basic Defaults
##
# Comma separated list of ip addresses to listen on (all local ips by default)
bind_ip = 127.0.0.1
# Specify port number (27017 by default)
#port = 27017
为mongodb服务器监听远程连接，可以更改
# Comma separated list of ip addresses to listen on (all local ips by default)
bind_ip = 0.0.0.0
问题 bindIp 没有改变。从我这边重新启动 mongo 时出现了一些问题。
习惯应该是验证bindIp是否真的改变了。 （使用 sudo netstat -tulpn | grep 27017）
使用 mongoDB 服务器版本 3.6.4，Ubuntu 16.4.4 我通过在 /etc/mongod.conf 中设置网络部分解决了这个问题，如下所示：
net:
port: 27017
bindIpAll: true
# bindIp: 127.0.0.1
我尝试了不同的方法来解决这个问题。我已经从
更改了配置文件bind_ip = 127.0.0.1
#port = 27017
到
bind_ip = 0.0.0.0
#port = 27017
希望对您有所帮助。编码愉快 ;)