You can use the following configuration properties of the Data Flow server to customize how applications are deployed.

spring.cloud.deployer.local.workingDirectoriesRoot=java.io.tmpdir # Directory in which all created processes will run and create log files.

spring.cloud.deployer.local.deleteFilesOnExit=true # Whether to delete created files and directories on JVM exit.

spring.cloud.deployer.local.envVarsToInherit=TMP,LANG,LANGUAGE,"LC_.*. # Array of regular expression patterns for environment variables that will be passed to launched applications.

spring.cloud.deployer.local.javaCmd=java # Command to run java.

spring.cloud.deployer.local.shutdownTimeout=30 # Max number of seconds to wait for app shutdown.

spring.cloud.deployer.local.javaOpts= # The Java options to pass to the JVM

When deploying the application you can also set deployer properties prefixed with deployer.<name of application>, So for example to set Java options for the time application in the ticktock stream, use the following stream deployment properties.

dataflow:> stream create --name ticktock --definition "time --server.port=9000 | log"
dataflow:> stream deploy --name ticktock --properties "deployer.time.local.javaOpts=-Xmx2048m -Dtest=foo"

As a convenience you can set the property deployer.memory to set the Java option -Xmx. So for example,

dataflow:> stream deploy --name ticktock --properties "deployer.time.memory=2048m"

At deployment time, if you specify an -Xmx option in the deployer.<app>.local.javaOpts property in addition to a value of the deployer.<app>.local.memory option, the value in the javaOpts property has precedence. Also, the javaOpts property set when deploying the application has precedence over the Data Flow server’s spring.cloud.deployer.local.javaOpts property.