We can set environment variables for an application that is deployed in CloudFoundry. For example if we want to pass a JAVA_OPTS environment variable with a value of -XX:MaxPermSize=256m. We have to use the env-add command of the vmc command-line tool. We specify the application name we want to set the environment variable for followed by a key=value pair.
In the following command we set a JAVA_OPTS environment variable for the website application:
$ vmc env-add website JAVA_OPTS="-XX:MaxPermSize=256m -XX:+CMSClassUnloadingEnabled" Adding Environment Variable [JAVA_OPTS="-XX:MaxPermSize=256m -XX:+CMSClassUnloadingEnabled"]: OK Stopping Application: OK Staging Application: OK Starting Application: OK $
To see which environment variables are set we can use the env command. To delete a variable we use env-del and the name of the environment variable.
$ vmc env website +-----------+----------------------------------------------------+ | Variable | Value | +-----------+----------------------------------------------------+ | JAVA_OPTS | -XX:MaxPermSize=256m -XX:+CMSClassUnloadingEnabled | +-----------+----------------------------------------------------+ $ vmc env-del website JAVA_OPTS Deleting Environment Variable [BLOG_OPTS]: OK Stopping Application: OK Staging Application: OK Starting Application: OK $
