Chapter 15. KIE Server system properties

The KIE Server accepts the following system properties (bootstrap switches) to configure the behavior of the server:

Table 15.1. System properties for disabling KIE Server extensions

PropertyValuesDefaultDescription

org.drools.server.ext.disabled

true, false

false

If set to true, disables the Business Rule Management (BRM) support (for example, rules support).

org.optaplanner.server.ext.disabled

true, false

false

If set to true, disables the Red Hat build of OptaPlanner support.

org.kie.prometheus.server.ext.disabled

true, false

true

If set to true, disables the Prometheus Server extension.

org.kie.scenariosimulation.server.ext.disabled

true, false

true

If set to true, disables the Test scenario Server extension.

org.kie.dmn.server.ext.disabled

true, false

false

If set to true, disables the KIE Server DMN support.

org.kie.swagger.server.ext.disabled

true, false

false

If set to true, disables the KIE Server swagger documentation support

Note

Some Decision Manager controller properties listed in the following table are marked as required. Set these properties when you create or remove KIE Server containers in Business Central. If you use the KIE Server separately without any interaction with Business Central, you do not need to set the required properties.

Table 15.2. System properties required for Decision Manager controller

PropertyValuesDefaultDescription

org.kie.server.id

String

N/A

An arbitrary ID to be assigned to the server. If a headless Decision Manager controller is configured outside of Business Central, this is the ID under which the server connects to the headless Decision Manager controller to fetch the KIE container configurations. If not provided, the ID is automatically generated.

org.kie.server.user

String

kieserver

The user name used to connect with the KIE Server from the Decision Manager controller, required when running in managed mode. Set this property in Business Central system properties. Set this property when using a Decision Manager controller.

org.kie.server.pwd

String

kieserver1!

The password used to connect with the KIE Server from the Decision Manager controller, required when running in managed mode. Set this property in Business Central system properties. Set this property when using a Decision Manager controller.

org.kie.server.token

String

N/A

A property that enables you to use token-based authentication between the Decision Manager controller and the KIE Server instead of the basic user name and password authentication. The Decision Manager controller sends the token as a parameter in the request header. The server requires long-lived access tokens because the tokens are not refreshed.

org.kie.server.location

URL

N/A

The URL of the KIE Server instance used by the Decision Manager controller to call back on this server, for example, http://localhost:8230/kie-server/services/rest/server. Setting this property is required when using a Decision Manager controller.

org.kie.server.controller

Comma-separated list

N/A

A comma-separated list of URLs to the Decision Manager controller REST endpoints, for example, http://localhost:8080/decision-central/rest/controller. Setting this property is required when using a Decision Manager controller.

org.kie.server.controller.user

String

kieserver

The user name to connect to the Decision Manager controller REST API. Setting this property is required when using a Decision Manager controller.

org.kie.server.controller.pwd

String

kieserver1!

The password to connect to the Decision Manager controller REST API. Setting this property is required when using a Decision Manager controller.

org.kie.server.controller.token

String

N/A

A property that enables you to use token-based authentication between the KIE Server and the Decision Manager controller instead of the basic user name and password authentication. The server sends the token as a parameter in the request header. The server requires long-lived access tokens because the tokens are not refreshed.

org.kie.server.controller.connect

Long

10000

The waiting time in milliseconds between repeated attempts to connect the KIE Server to the Decision Manager controller when the server starts.

Table 15.3. System properties for loading keystore

PropertyValuesDefaultDescription

kie.keystore.keyStoreURL

URL

N/A

The URL is used to load a Java Cryptography Extension KeyStore (JCEKS). For example, file:///home/kie/keystores/keystore.jceks.

kie.keystore.keyStorePwd

String

N/A

The password is used for the JCEKS.

kie.keystore.key.server.alias

String

N/A

The alias name of the key for REST services where the password is stored.

kie.keystore.key.server.pwd

String

N/A

The password of an alias for REST services.

kie.keystore.key.ctrl.alias

String

N/A

The alias of the key for default REST Decision Manager controller.

kie.keystore.key.ctrl.pwd

String

N/A

The password of an alias for default REST Decision Manager controller.

Table 15.4. System properties for retrying committing transactions

PropertyValuesDefaultDescription

org.kie.optlock.retries

Integer

5

This property describes how many times the process engine retries a transaction before failing permanently.

org.kie.optlock.delay

Integer

50

The delay time before the first retry, in milliseconds.

org.kie.optlock.delayFactor

Integer

4

The multiplier for increasing the delay time for each subsequent retry. With the default values, the process engine waits 50 milliseconds before the first retry, 200 milliseconds before the second retry, 800 milliseconds before the third retry, and so on.

Table 15.5. Other system properties

PropertyValuesDefaultDescription

kie.maven.settings.custom

Path

N/A

The location of a custom settings.xml file for Maven configuration.

kie.server.jms.queues.response

String

queue/KIE.SERVER.RESPONSE

The response queue JNDI name for JMS.

org.drools.server.filter.classes

true, false

false

When set to true, the Drools KIE Server extension accepts custom classes annotated by the XmlRootElement or Remotable annotations only.

org.kie.server.domain

String

N/A

The JAAS LoginContext domain used to authenticate users when using JMS.

org.kie.server.repo

Path

.

The location where KIE Server state files are stored.

org.kie.server.sync.deploy

true, false

false

A property that instructs the KIE Server to hold the deployment until the Decision Manager controller provides the container deployment configuration. This property only affects servers running in managed mode. The following options are available:

* false: The connection to the Decision Manager controller is asynchronous. The application starts, connects to the Decision Manager controller, and once successful, deploys the containers. The application accepts requests even before the containers are available. * true: The deployment of the server application joins the Decision Manager controller connection thread with the main deployment and awaits its completion. This option can lead to a potential deadlock in case more applications are on the same server. Use only one application on one server instance.

org.kie.server.startup.strategy

ControllerBasedStartupStrategy, LocalContainersStartupStrategy

ControllerBasedStartupStrategy

The Startup strategy of KIE Server used to control the KIE containers that are deployed and the order in which they are deployed.

org.kie.server.mgmt.api.disabled

true, false

false

When set to true, disables KIE Server management API.

org.kie.server.xstream.enabled.packages

Java packages like org.kie.example. You can also specify wildcard expressions like org.kie.example.*.

N/A

A property that specifies additional packages to allowlist for marshalling using XStream.

org.kie.store.services.class

String

org.drools.persistence.jpa.KnowledgeStoreServiceImpl

Fully qualified name of the class that implements KieStoreServices that are responsible for bootstrapping KieSession instances.

org.kie.server.strict.id.format

true, false

false

While using JSON marshalling, if the property is set to true, it will always return a response in the proper JSON format. For example, if the original response contains only a single number, then the response is wrapped in a JSON format. For example, {"value" : 1}.

org.kie.server.strict.jaxb.format

true, false

false

When the value of this property is set to true, KIE Server validates the data type of the data in the REST API payload. For example, if a data field has the number data type and contains something other than a number, you will receive an error.