GString *blog = g_string_new("Hacking");

Solving “connection refused” issues on Debian Sid

Some weeks ago I started to experiment some network issues on my debian sid:

• The selenium-remote-control was not running:

I could even try to do a: “telnet localhost 4444″, it just did not work.

• My Apache-Solr was not capable to subscribe to apache-activemq

When reading the log, I saw:

javax.jms.JMSException: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused
 at org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:35)
 at org.apache.activemq.ActiveMQConnectionFactory.createActiveMQConnection(ActiveMQConnectionFactory.java:280

Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused

Suddenly I noticed something weird in my netstat:

tcp6       0      0 :::8983                 :::*                    LISTEN      3865/solr-globocom
tcp6       0      0 :::8161                 :::*                    LISTEN      3901/activemq-globo
tcp6       0      0 :::61616                :::*                    LISTEN      3901/activemq-globo
tcp6       0      0 127.0.0.1:41879         127.0.0.1:61616         ESTABLISHED 3865/solr-globocom
tcp6       0      0 127.0.0.1:61616         127.0.0.1:41879         ESTABLISHED 3901/activemq-globo

Everything is being bound as IPv6… humm, that doesn’t have a good smell….

Looking for solutions I’ve found this file:

/etc/sysctl.d/bindv6only.conf

interesting, huh?!?

Openning up that file, I saw a full description of it, then I just needed to change its property from this:

net.ipv6.bindv6only = 1

to this:

net.ipv6.bindv6only = 0

Well, if you have the same problem, jsut change that, restart your PC, and be happy!

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