In Java 8, how do I get my hostname without hard-coding it in my environment?
We just upgraded to Java 8 on Amazon Linux. We are using Spring 4.3.8.RELEASE. It used to be that we could get our machine hostname by setting up beans in our application context file like so ...
<bean id="localhostInetAddress" class="java.net.InetAddress" factory-method="getLocalHost" />
<bean id="hostname" factory-bean="localhostInetAddress" factory-method="getHostName" />
But with Java 8, the bean "hostname" now contains the string
localhost
Before Java 8, it used to contain the "hostname" value as run on the command line, which is
[myuser@machine1 ~]$ hostname
machine1.mydomain.org
How can I reconfigure our bean so that it gets the hostname that the command line lists out? I don't want to hard-code anything anywhere.
Answer
From InetAddress java 8 is not getting the hostname :
There was similar bug fired in JDK.
What I understand is that they changed default resolution process.
They honor configuration in /etc/nsswitch.conf where hosts are configured for /etc/hosts that gives it main priority for name resolution.
Usually /etc/hosts has record for 127.0.0.1 localhost that provide name for host localhost