Variable Substitution in standalone.xml

[johnny_kleinlercher]

Is it possible to use variables in the standalone.xml and define those variables in an external file? We need a feature like this to substitute environment specific values (database host, database port) during deployment in different environments.

I found something like this on openshift Environment Variables | OpenShift Developers but it seems to be a openshift feature and no wildfly feature. On openshift the variables get subsituted before wildfly starts with this script s2i-wildfly/standalone.conf at master · openshift-s2i/s2i-wildfly · GitHub .

Wouldn't it be a cool wildfly feature so that developers could also use it in their environment without sed or other scripts?

[ctomc]

Well WildFly has supported this since its inception

just look for WildFly expressions https://docs.jboss.org/author/display/WFLY10/Expressions

in short you have syntax like ${name.of.system.property:defaultValue}

or even ${env.name-of-env-variable:defaultValue} which can be used pretty much everywhere in the configuration (except for model references/ids)

[arun2arunraj]

Hi Johannes Kleinlercher,

Yes you can do it. Check System Property tag in standalone.xml which will help you out to fix this.

eg:

	<system-properties>
	<property name="ip_address" value="192.168.35.10" boot-time="true"/>
	<property name="port_number" value="3600" boot-time="true"/> </system-properties>