无法连接到远程服务器上的mongo

Question

我在本地网络中的机器1上安装了mongo（Ubuntu 14.04.3 LTS server）。我也打开了端口27017在this指导使用下面的命令中提到：

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（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 

---

但我不能够连接到这个端口from machine2（in the same network）：

$ 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 

我也试着检查端口是否打开：

$ nc -v 192.168.0.108 27017 
nc: connectx to 192.168.0.108 port 27017 (tcp) failed: Connection refused 

我不知道我在想什么。当我第一次设置mongo时，一定是一些愚蠢的错误。请帮助。

更新（在当前的回答提出的质疑）

1. 呀它的运行。我能够连接到mongo形成同一台机器，但不能从另一台机器上连接。守护进程正在运行：$ service mongod status mongod start/running, process 31205和端口是27017 $ sudo netstat -tulpn |grep 27017 tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 31205/mongod
2. 我将bind_ip更改为0.0.0.0并重新启动了mongo。同样的错误即将到来。

蒙戈日志：

$ 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) 

Answer 1

的问题是bindIp没有改变。从我身边重新启动mongo时出现了一些问题。

习惯应该是验证bindIp是否实际改变了。 （使用sudo netstat -tulpn | grep 27017）

Answer 2

确保你有你的MACHINE1其侦听端口27017我们得到了同样的错误，发现后台程序没有运行运行的守护进程。

Answer 3

确保MongoDB的守护进程正在运行，并侦听0.0.0.0，而不是127.0.0.1端口

例如，我的本地MongoDB的，它有这个配置：

[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的服务器监听远程连接，你可以改变

# Comma separated list of ip addresses to listen on (all local ips by default) 
bind_ip = 0.0.0.0