Mongodb no route to host while running mongo on a local machine - mongodb

Question

I have installed MongoDB on a local machine by following this tutorial and this one as well. I used my local user (using sudo in all commands) and then I do:
sudo service mongod start
It says start: Job is already running: mongod. Then when I run this command
sudo mongo
I get
MongoDB shell version: 2.6.0
connecting to: test
2014-07-08T12:33:40.360+0200 warning: Failed to connect to 127.0.0.1:27017, reason: errno:113 No route to host
2014-07-08T12:33:40.361+0200 Error: couldn't connect to server 127.0.0.1:27017 (127.0.0.1), connection attempt failed at src/mongo/shell/mongo.js:146
exception: connect failed
THis is also the output of netstat -tpln
(No info could be read for "-p": geteuid()=1000 but you should be root.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp
0 0 0.0.0.0:27017 0.0.0.0:* LISTEN -
Also this is the output of sudo /sbin/iptables -L -n
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:5432
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:8080
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:8443
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:3306
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 255
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
ACCEPT tcp -- 127.0.0.1 0.0.0.0/0 tcp dpt:27017 state NEW,ESTABLISHED
ACCEPT tcp -- 127.0.0.1 0.0.0.0/0 tcp dpt:27017 state NEW,ESTABLISHED
ACCEPT tcp -- 127.0.0.1 0.0.0.0/0 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 -- 0.0.0.0/0 127.0.0.1 tcp spt:27017 state ESTABLISHED
ACCEPT tcp -- 0.0.0.0/0 127.0.0.1 tcp spt:27017 state ESTABLISHED
ACCEPT tcp -- 0.0.0.0/0 127.0.0.1 tcp spt:27017 state ESTABLISHED
I have followed several proposed solutions and never worked. Any suggestions?
I have followed several proposed solutions and never worked. Any suggestions?

Answer 1

This is most likely a firewall issue in your distro. Based on the output from iptables the mongod process is there listening to 27017 port but you need to get rid of this firewall rule:
REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
This seems to cause of the problem. To find out about it, flush the rules in iptables (-F) and/or disabling ufw in ubuntu may solve the issue.