Chapter 3. Environment with immutable servers

You can deploy an environment that includes one or more pods running immutable Decision Server with preloaded services. Each Decision Server pod can be separately scaled as necessary.

On an immutable Decision Server, any services must be loaded onto the server at the time the image is created. You cannot deploy or undeploy services on a running immutable Decision Server. The advantage of this approach is that the Decision Server with the services in it runs like any other containerized service and does not require specialized management. The Decision Server runs like any other pod on the OpenShift environment; you can use any container-based integration workflows as necessary.

When you create a Decision Server image, you can build your services using S2I (Source to Image). Provide a Git repository with the source of your services and other business assets; if you develop the services or assets in Business Central, copy the source into a separate repository for the S2I build. OpenShift automatically builds the source, installs the services into the Decision Server image, and starts the containers with the services.

If you are using Business Central for authoring services, you can extract the source for your process and place it into a separate Git repository (such as GitHub or an on-premise installation of GitLab) for use in the S2I build.

Alternatively, you can create a similar Decision Server deployment using services that are already built as KJAR files. In this case, you must provide the services in a Maven repository. You can use the built-in repository of the Business Central or your own repository (for example, a Nexus deployment). When the server pod starts, it retrieves the KJAR services from the Maven repository. Services on the pod are never updated or changed. At every restart or scaling of the pod, the server retrieves the files from the repository, so you must ensure they do not change on the Maven repository to keep the deployment immutable.

With both methods of creating immutable images, no further management of the image is required. If you want to use a new version of a service, you can build a new image.

3.1. Deploying an immutable Decision Server using an S2I build

You can deploy an immutable Decision Server using an S2I build. When you deploy the server, the deployment procedure retrieves the source code for any services that must run on this server, builds the services, and includes them in the server image.

You cannot deploy or undeploy services on a running immutable Decision Server. You can use Business Central to view monitoring information. The Decision Server runs like any other pod on the OpenShift environment; you can use any container-based integration workflows as necessary.

You can enable JMS capabilities of the immutable Decision Server. With JMS capabilities you can interact with the server through JMS API using an external AMQ message broker.

If a Business Central is deployed in the same namespace, it discovers the immutable Decision Server automatically. You can use Business Central to start and stop (but not deploy) services on the immutable Decision Server.

3.1.1. Starting configuration of the template for an immutable Decision Server using S2I

To deploy an immutable Decision Server using an S2I build, use the rhdm76-prod-immutable-kieserver-amq.yaml template file if you want to enable JMS capabilities. Otherwise, use the rhdm76-prod-immutable-kieserver.yaml template file.

Procedure

  1. Download the rhdm-7.6.0-openshift-templates.zip product deliverable file from the Software Downloads page of the Red Hat Customer Portal.
  2. Extract the required template file.
  3. Use one of the following methods to start deploying the template:

    • To use the OpenShift Web UI, in the OpenShift application console select Add to Project → Import YAML / JSON and then select or paste the <template-file-name>.yaml file. In the Add Template window, ensure Process the template is selected and click Continue.
    • To use the OpenShift command line console, prepare the following command line:

      oc new-app -f <template-path>/<template-file-name>.yaml -p KIE_SERVER_HTTPS_SECRET=kieserver-app-secret -p PARAMETER=value

      In this command line, make the following changes:

      • Replace <template-path> with the path to the downloaded template file.
      • Replace <template-file-name> with the name of the template file.
      • Use as many -p PARAMETER=value pairs as needed to set the required parameters.

Next steps

Set the parameters for the template. Follow the steps in Section 3.1.2, “Setting required parameters for an immutable Decision Server using S2I” to set common parameters. You can view the template file to see descriptions for all parameters.

3.1.2. Setting required parameters for an immutable Decision Server using S2I

When configuring the template to deploy an immutable Decision Server using an S2I build, you must set the following parameters in all cases.

Prerequisites

Procedure

  1. Set the following parameters:

    • KIE Server Keystore Secret Name (KIE_SERVER_HTTPS_SECRET): The name of the secret for Decision Server, as created in Section 2.2, “Creating the secrets for Decision Server”.
    • KIE Server Certificate Name (KIE_SERVER_HTTPS_NAME): The name of the certificate in the keystore that you created in Section 2.2, “Creating the secrets for Decision Server”.
    • KIE Server Keystore Password (KIE_SERVER_HTTPS_PASSWORD): The password for the keystore that you created in Section 2.2, “Creating the secrets for Decision Server”.
    • Application Name (APPLICATION_NAME): The name of the OpenShift application. It is used in the default URLs for Business Central Monitoring and Decision Server. OpenShift uses the application name to create a separate set of deployment configurations, services, routes, labels, and artifacts. You can deploy several applications using the same template into the same project, as long as you use different application names. Also, the application name determines the name of the server configuration (server template) that the Decision Server joins on Business Central. If you are deploying several Decision Servers, you must ensure each of the servers has a different application name.
    • KIE Server Container Deployment (KIE_SERVER_CONTAINER_DEPLOYMENT): The identifying information of the decision service (KJAR file) that the deployment must pull from the local or external repository after building your source. The format is <containerId>=<groupId>:<artifactId>:<version> or, if you want to specify an alias name for the container, <containerId>(<aliasId>)=<groupId>:<artifactId>:<version>. You can provide two or more KJAR files using the | separator, as illustrated in the following example:

      containerId=groupId:artifactId:version|c2(alias2)=g2:a2:v2

      To avoid duplicate container IDs, the artifact ID must be unique for each artifact built or used in your project.

    • Git Repository URL (SOURCE_REPOSITORY_URL): The URL for the Git repository that contains the source for your services.
    • Git Reference (SOURCE_REPOSITORY_REF): The branch in the Git repository.
    • Context Directory (CONTEXT_DIR): The path to the source within the project downloaded from the Git repository.
    • Artifact Directory (ARTIFACT_DIR): The path within the project that contains the required binary files (KJAR files and any other necessary files) after a successful Maven build. Normally this directory is the target directory of the build. However, you can provide prebuilt binaries in this directory in the Git repository.
    • ImageStream Namespace (IMAGE_STREAM_NAMESPACE): The namespace where the image streams are available. If the image streams were already available in your OpenShift environment (see Section 2.1, “Ensuring the availability of image streams and the image registry”), the namespace is openshift. If you have installed the image streams file, the namespace is the name of the OpenShift project.
  2. You can set the following user name and password. By default, the deployment automatically generates the password.

    • KIE Server User (KIE_SERVER_USER) and KIE Server Password (KIE_SERVER_PWD): The user name and password that a client application can use to connect to any of the Decision Servers.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.3. Configuring the image stream namespace for an immutable Decision Server using S2I

If you created image streams in a namespace that is not openshift, you must configure the namespace in the template.

If all image streams were already available in your Red Hat OpenShift Container Platform environment, you can skip this procedure.

Prerequisites

Procedure

If you installed an image streams file according to instructions in Section 2.1, “Ensuring the availability of image streams and the image registry”, set the ImageStream Namespace (IMAGE_STREAM_NAMESPACE) parameter to the name of your OpenShift project.

3.1.4. Configuring information about a Business Central instance for an immutable Decision Server using S2I

If you want to enable a connection from a Business Central instance in the same namespace to the Decision Server, you must configure information about the Business Central instance.

Prerequisites

Procedure

  1. Set the following parameters:

    • KIE Admin User (KIE_ADMIN_USER) and KIE Admin Password (KIE_ADMIN_PWD): The user name and password for the administrative user. These values must be the same as the KIE_ADMIN_USER and KIE_ADMIN_PWD settings for the Business Central. If the Business Central uses RH-SSO or LDAP authentication, these values must be a user name and password configured in the authentication system with an administrator role for the Business Central.
    • Name of the Business Central service (DECISION_CENTRAL_SERVICE): The OpenShift service name for the Business Central.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.5. Setting an optional Maven repository for an immutable Decision Server using S2I

When configuring the template to deploy an immutable Decision Server using an S2I build, if your source build includes dependencies that are not available on the public Maven tree and require a separate custom Maven repository, you must set parameters to access the repository.

Prerequisites

Procedure

To configure access to a custom Maven repository, set the following parameters:

  • Maven repository URL (MAVEN_REPO_URL): The URL for the Maven repository.
  • Maven repository ID (MAVEN_REPO_ID): An identifier for the Maven repository. The default value is repo-custom.
  • Maven repository username (MAVEN_REPO_USERNAME): The user name for the Maven repository.
  • Maven repository password (MAVEN_REPO_PASSWORD): The password for the Maven repository.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.6. Configuring access to a Maven mirror in an environment without a connection to the public Internet for an immutable Decision Server using S2I

When configuring the template to deploy an immutable Decision Server using an S2I build, if your OpenShift environment does not have a connection to the public Internet, you must configure access to a Maven mirror that you set up according to Section 2.4, “Preparing a Maven mirror repository for offline use”.

Prerequisites

Procedure

To configure access to the Maven mirror, set the following parameters:

  • Maven mirror URL (MAVEN_MIRROR_URL): The URL for the Maven mirror repository that you set up in Section 2.4, “Preparing a Maven mirror repository for offline use”. This URL must be accessible from a pod in your OpenShift environment.
  • Maven mirror of (MAVEN_MIRROR_OF): The value that determines which artifacts are to be retrieved from the mirror. For instructions about setting the mirrorOf value, see Mirror Settings in the Apache Maven documentation. The default value is external:*. With this value, Maven retrieves every required artifact from the mirror and does not query any other repositories.

    • If you configure an external Maven repository (MAVEN_REPO_URL), change MAVEN_MIRROR_OF to exclude the artifacts in this repository from the mirror, for example, external:*,!repo-custom. Replace repo-custom with the ID that you configured in MAVEN_REPO_ID.
    • If you configure a built-in Business Central Maven repository (BUSINESS_CENTRAL_MAVEN_SERVICE), change MAVEN_MIRROR_OF to exclude the artifacts in this repository from the mirror: external:*,!repo-rhdmcentr.
    • If you configure both repositories, change MAVEN_MIRROR_OF to exclude the artifacts in both repositories from the mirror: external:*,!repo-rhdmcentr,!repo-custom. Replace repo-custom with the ID that you configured in MAVEN_REPO_ID.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.7. Configuring communication with an AMQ server for an immutable Decision Server using S2I

If you use the rhdm76-prod-immutable-kieserver-amq.yaml template file, JMS capabilities of the Decision Server are enabled. You can interact with the server through JMS API, using an external AMQ message broker.

If necessary for your environment, you can modify the JMS configuration.

Prerequisites

Procedure

Set any of the following parameters as required for your environment:

  • AMQ Username (AMQ_USERNAME) and AMQ Password (AMQ_PASSWORD): The user name and password of a standard broker user, if user authentication in the broker is required in your environment.
  • AMQ Role (AMQ_ROLE): The user role for the standard broker user. The default role is admin.
  • AMQ Queues (AMQ_QUEUES): AMQ queue names, separated by commas. These queues are automatically created when the broker starts and are accessible as JNDI resources in the JBoss EAP server. If you use custom queue names, you must also set the same queue names in the KIE_SERVER_JMS_QUEUE_RESPONSE, KIE_SERVER_JMS_QUEUE_REQUEST, KIE_SERVER_JMS_QUEUE_SIGNAL, KIE_SERVER_JMS_QUEUE_AUDIT, and KIE_SERVER_JMS_QUEUE_EXECUTOR parameters.
  • AMQ Global Max Size (AMQ_GLOBAL_MAX_SIZE): The maximum amount of memory that message data can consume. If no value is specified, half of the memory available in the pod is allocated.
  • AMQ Protocols (AMQ_PROTOCOL): Broker protocols that the Decision Server can use to communicate with the AMQ server, separated by commas. Allowed values are openwire, amqp, stomp, and mqtt. Only openwire is supported by JBoss EAP. The default value is openwire.
  • AMQ Broker Image (AMQ_BROKER_IMAGESTREAM_NAME): The image stream name for the AMQ broker image.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.8. Setting parameters for RH-SSO authentication for an immutable Decision Server using S2I

If you want to use RH-SSO authentication, complete the following additional configuration when configuring the template to deploy an immutable Decision Server using an S2I build.

Important

Do not configure LDAP authentication and RH-SSO authentication in the same deployment.

Prerequisites

  • A realm for Red Hat Decision Manager is created in the RH-SSO authentication system.
  • User names and passwords for Red Hat Decision Manager are created in the RH-SSO authentication system. For a list of the available roles, see Chapter 4, Red Hat Decision Manager roles and users. In order to set the parameters for the environment, an administrative user with the kie-server,rest-all,admin roles is required. The default user name for this user is adminUser. This user can administer and use the environment.
  • Clients are created in the RH-SSO authentication system for all components of the Red Hat Decision Manager environment that you are deploying. The client setup contains the URLs for the components. You can review and edit the URLs after deploying the environment. Alternatively, the Red Hat Decision Manager deployment can create the clients. However, this option provides less detailed control over the environment.
  • You started the configuration of the template, as described in Section 3.1.1, “Starting configuration of the template for an immutable Decision Server using S2I”.

Procedure

  1. Set the KIE_ADMIN_USER and KIE_ADMIN_PASSWORD parameters of the template to the user name and password of the administrative user that you created in the RH-SSO authentication system.
  2. Set the following parameters:

    • RH-SSO URL (SSO_URL): The URL for RH-SSO.
    • RH-SSO Realm name (SSO_REALM): The RH-SSO realm for Red Hat Decision Manager.
    • RH-SSO Disable SSL Certificate Validation (SSO_DISABLE_SSL_CERTIFICATE_VALIDATION): Set to true if your RH-SSO installation does not use a valid HTTPS certificate.
  3. Complete one of the following procedures:

    1. If you created the client for Red Hat Decision Manager within RH-SSO, set the following parameters in the template:

      • Business Central RH-SSO Client name (DECISION_CENTRAL_SSO_CLIENT): The RH-SSO client name for Business Central.
      • KIE Server RH-SSO Client name (KIE_SERVER_SSO_CLIENT): The RH-SSO client name for Decision Server.
      • KIE Server RH-SSO Client Secret (KIE_SERVER_SSO_SECRET): The secret string that is set in RH-SSO for the client for Decision Server.
    2. To create the clients for Red Hat Decision Manager within RH-SSO, set the following parameters in the template:

      • KIE Server RH-SSO Client name (KIE_SERVER_SSO_CLIENT): The name of the client to create in RH-SSO for Decision Server.
      • KIE Server RH-SSO Client Secret (KIE_SERVER_SSO_SECRET): The secret string to set in RH-SSO for the client for Decision Server.
      • RH-SSO Realm Admin Username (SSO_USERNAME) and RH-SSO Realm Admin Password (SSO_PASSWORD): The user name and password for the realm administrator user for the RH-SSO realm for Red Hat Decision Manager. You must provide this user name and password in order to create the required clients.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

After completing the deployment, review the URLs for components of Red Hat Decision Manager in the RH-SSO authentication system to ensure they are correct.

3.1.9. Setting parameters for LDAP authentication for an immutable Decision Server using S2I

If you want to use LDAP authentication, complete the following additional configuration when configuring the template to deploy an immutable Decision Server using an S2I build.

Important

Do not configure LDAP authentication and RH-SSO authentication in the same deployment.

Prerequisites

Procedure

  1. In the LDAP service, create all user names in the deployment parameters. If you do not set any of the parameters, create users with the default user names. The created users must also be assigned to roles:

    • KIE_ADMIN_USER: default user name adminUser, roles: kie-server,rest-all,admin
    • KIE_SERVER_USER: default user name executionUser, roles kie-server,rest-all,guest

      For the user roles that you can configure in LDAP, see Roles and users.

  2. Set the AUTH_LDAP* parameters of the template. These parameters correspond to the settings of the LdapExtended Login module of Red Hat JBoss EAP. For instructions about using these settings, see LdapExtended login module.

    If the LDAP server does not define all the roles required for your deployment, you can map LDAP groups to Red Hat Decision Manager roles. To enable LDAP role mapping, set the following parameters:

    • RoleMapping rolesProperties file path (AUTH_ROLE_MAPPER_ROLES_PROPERTIES): The fully qualified path name of a file that defines role mapping, for example, /opt/eap/standalone/configuration/rolemapping/rolemapping.properties. You must provide this file and mount it at this path in all applicable deployment configurations; for instructions, see Section 3.3, “(Optional) Providing the LDAP role mapping file”.
    • RoleMapping replaceRole property (AUTH_ROLE_MAPPER_REPLACE_ROLE): If set to true, mapped roles replace the roles defined on the LDAP server; if set to false, both mapped roles and roles defined on the LDAP server are set as user application roles. The default setting is false.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

3.1.10. Enabling Prometheus metric collection for an immutable Decision Server using S2I

If you want to configure your Decision Server deployment to use Prometheus to collect and store metrics, enable support for this feature in Decision Server at deployment time.

Prerequisites

Procedure

To enable support for Prometheus metric collection, set the Prometheus Server Extension Disabled (PROMETHEUS_SERVER_EXT_DISABLED) parameter to false.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.1.11, “Completing deployment of the template for an immutable Decision Server using S2I”.

For instructions about configuring Prometheus metrics collection, see Managing and monitoring Decision Server.

3.1.11. Completing deployment of the template for an immutable Decision Server using S2I

After setting all the required parameters in the OpenShift Web UI or in the command line, complete deployment of the template.

Procedure

Depending on the method that you are using, complete the following steps:

  • In the OpenShift Web UI, click Create.

    • If the This will create resources that may have security or project behavior implications message appears, click Create Anyway.
  • Complete the command line and press Enter.

3.2. Deploying an immutable Decision Server from KJAR services

You can deploy an immutable Decision Server using services that are already built as KJAR files.

You must provide the services in a Maven repository. You can use the built-in repository of the Business Central or your own repository (for example, a Nexus deployment). When the server pod starts, it retrieves the KJAR services from the Maven repository. Services on the pod are never updated or changed. At every restart or scaling of the pod, the server retrieves the files from the repository, so you must ensure they do not change on the Maven repository to keep the deployment immutable.

You cannot deploy or undeploy services on a running immutable Decision Server. You can use Business Central to view monitoring information. The Decision Server runs like any other pod on the OpenShift environment; you can use any container-based integration workflows as necessary.

If a Business Central is deployed in the same namespace, it discovers the immutable Decision Server automatically. You can use Business Central to start and stop (but not deploy) services on the immutable Decision Server and to view monitoring data.

3.2.1. Starting configuration of the template for an immutable Decision Server from KJAR services

To deploy an immutable Decision Server from KJAR services, use the rhdm76-kieserver.yaml template file.

Procedure

  1. Download the rhdm-7.6.0-openshift-templates.zip product deliverable file from the Software Downloads page of the Red Hat Customer Portal.
  2. Extract the rhdm76-kieserver.yaml template file.
  3. Use one of the following methods to start deploying the template:

    • To use the OpenShift Web UI, in the OpenShift application console select Add to Project → Import YAML / JSON and then select or paste the rhdm76-kieserver.yaml file. In the Add Template window, ensure Process the template is selected and click Continue.
    • To use the OpenShift command line console, prepare the following command line:

      oc new-app -f <template-path>/rhdm76-kieserver.yaml -p KIE_SERVER_HTTPS_SECRET=kieserver-app-secret -p PARAMETER=value

      In this command line, make the following changes:

      • Replace <template-path> with the path to the downloaded template file.
      • Use as many -p PARAMETER=value pairs as needed to set the required parameters.

Next steps

Set the parameters for the template. Follow the steps in Section 3.2.2, “Setting required parameters for an immutable Decision Server from KJAR services” to set common parameters. You can view the template file to see descriptions for all parameters.

3.2.2. Setting required parameters for an immutable Decision Server from KJAR services

When configuring the template to deploy an immutable Decision Server from KJAR services, you must set the following parameters in all cases.

Prerequisites

Procedure

  1. Set the following parameters:

    • KIE Server Keystore Secret Name (KIE_SERVER_HTTPS_SECRET): The name of the secret for Decision Server, as created in Section 2.2, “Creating the secrets for Decision Server”.
    • KIE Server Certificate Name (KIE_SERVER_HTTPS_NAME): The name of the certificate in the keystore that you created in Section 2.2, “Creating the secrets for Decision Server”.
    • KIE Server Keystore Password (KIE_SERVER_HTTPS_PASSWORD): The password for the keystore that you created in Section 2.2, “Creating the secrets for Decision Server”.
    • Application Name (APPLICATION_NAME): The name of the OpenShift application. It is used in the default URLs for Business Central Monitoring and Decision Server. OpenShift uses the application name to create a separate set of deployment configurations, services, routes, labels, and artifacts. You can deploy several applications using the same template into the same project, as long as you use different application names. Also, the application name determines the name of the server configuration (server template) that the Decision Server joins on Business Central. If you are deploying several Decision Servers, you must ensure each of the servers has a different application name.
    • Maven repository URL (MAVEN_REPO_URL): A URL for a Maven repository. You must upload all the processes (KJAR files) that are to be deployed on the Decision Server into this repository.
    • Maven repository ID (MAVEN_REPO_ID): An identifier for the Maven repository. The default value is repo-custom.
    • Maven repository username (MAVEN_REPO_USERNAME): The user name for the Maven repository.
    • Maven repository password (MAVEN_REPO_PASSWORD): The password for the Maven repository.
    • KIE Server Container Deployment (KIE_SERVER_CONTAINER_DEPLOYMENT): The identifying information of the decision services (KJAR files) that the deployment must pull from the Maven repository. The format is <containerId>=<groupId>:<artifactId>:<version> or, if you want to specify an alias name for the container, <containerId>(<aliasId>)=<groupId>:<artifactId>:<version>. You can provide two or more KJAR files using the | separator, as illustrated in the following example:

      containerId=groupId:artifactId:version|c2(alias2)=g2:a2:v2
    • KIE Server Mode (KIE_SERVER_MODE): In the rhdm76-kieserver-*.yaml templates the default value is PRODUCTION. In PRODUCTION mode, you cannot deploy SNAPSHOT versions of KJAR artifacts on the Decision Server and cannot change versions of an artifact in an existing container. To deploy a new version with PRODUCTION mode, create a new container on the same Decision Server. To deploy SNAPSHOT versions or to change versions of an artifact in an existing container, set this parameter to DEVELOPMENT.
    • ImageStream Namespace (IMAGE_STREAM_NAMESPACE): The namespace where the image streams are available. If the image streams were already available in your OpenShift environment (see Section 2.1, “Ensuring the availability of image streams and the image registry”), the namespace is openshift. If you have installed the image streams file, the namespace is the name of the OpenShift project.
  2. You can set the following user name and password. By default, the deployment automatically generates the password.

    • KIE Server User (KIE_SERVER_USER) and KIE Server Password (KIE_SERVER_PWD): The user name and password that a client application can use to connect to any of the Decision Servers.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

3.2.3. Configuring the image stream namespace for an immutable Decision Server from KJAR services

If you created image streams in a namespace that is not openshift, you must configure the namespace in the template.

If all image streams were already available in your Red Hat OpenShift Container Platform environment, you can skip this procedure.

Prerequisites

Procedure

If you installed an image streams file according to instructions in Section 2.1, “Ensuring the availability of image streams and the image registry”, set the ImageStream Namespace (IMAGE_STREAM_NAMESPACE) parameter to the name of your OpenShift project.

3.2.4. Configuring information about a Business Central instance for an immutable Decision Server from KJAR services

If you want to enable a connection from a Business Central instance in the same namespace to the Decision Server, you must configure information about the Business Central instance.

Prerequisites

Procedure

  1. Set the following parameters:

    • KIE Admin User (KIE_ADMIN_USER) and KIE Admin Password (KIE_ADMIN_PWD): The user name and password for the administrative user. These values must be the same as the KIE_ADMIN_USER and KIE_ADMIN_PWD settings for the Business Central. If the Business Central uses RH-SSO or LDAP authentication, these values must be a user name and password configured in the authentication system with an administrator role for the Business Central.
    • Name of the Business Central service (DECISION_CENTRAL_SERVICE): The OpenShift service name for the Business Central.
  2. Ensure that the following settings are set to the same value as the same settings for the Business Central:

    • Maven repository URL (MAVEN_REPO_URL): A URL for the external Maven repository from which services must be deployed.
    • Maven repository username (MAVEN_REPO_USERNAME): The user name for the Maven repository.
    • Maven repository password (MAVEN_REPO_PASSWORD): The password for the Maven repository.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

3.2.5. Configuring access to a Maven mirror in an environment without a connection to the public Internet for an immutable Decision Server from KJAR services

When configuring the template to deploy an immutable Decision Server from KJAR services, if your OpenShift environment does not have a connection to the public Internet, you must configure access to a Maven mirror that you set up according to Section 2.4, “Preparing a Maven mirror repository for offline use”.

Prerequisites

Procedure

To configure access to the Maven mirror, set the following parameters:

  • Maven mirror URL (MAVEN_MIRROR_URL): The URL for the Maven mirror repository that you set up in Section 2.4, “Preparing a Maven mirror repository for offline use”. This URL must be accessible from a pod in your OpenShift environment.
  • Maven mirror of (MAVEN_MIRROR_OF): The value that determines which artifacts are to be retrieved from the mirror. For instructions about setting the mirrorOf value, see Mirror Settings in the Apache Maven documentation. The default value is external:*. With this value, Maven retrieves every required artifact from the mirror and does not query any other repositories.

    • If you configure an external Maven repository (MAVEN_REPO_URL), change MAVEN_MIRROR_OF to exclude the artifacts in this repository from the mirror, for example, external:*,!repo-custom. Replace repo-custom with the ID that you configured in MAVEN_REPO_ID.
    • If you configure a built-in Business Central Maven repository (BUSINESS_CENTRAL_MAVEN_SERVICE), change MAVEN_MIRROR_OF to exclude the artifacts in this repository from the mirror: external:*,!repo-rhdmcentr.
    • If you configure both repositories, change MAVEN_MIRROR_OF to exclude the artifacts in both repositories from the mirror: external:*,!repo-rhdmcentr,!repo-custom. Replace repo-custom with the ID that you configured in MAVEN_REPO_ID.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

3.2.6. Setting parameters for RH-SSO authentication for an immutable Decision Server from KJAR services

If you want to use RH-SSO authentication, complete the following additional configuration when configuring the template to deploy an immutable Decision Server from KJAR services.

Important

Do not configure LDAP authentication and RH-SSO authentication in the same deployment.

Prerequisites

  • A realm for Red Hat Decision Manager is created in the RH-SSO authentication system.
  • User names and passwords for Red Hat Decision Manager are created in the RH-SSO authentication system. For a list of the available roles, see Chapter 4, Red Hat Decision Manager roles and users. In order to set the parameters for the environment, an administrative user with the kie-server,rest-all,admin roles is required. The default user name for this user is adminUser. This user can administer and use the environment.
  • Clients are created in the RH-SSO authentication system for all components of the Red Hat Decision Manager environment that you are deploying. The client setup contains the URLs for the components. You can review and edit the URLs after deploying the environment. Alternatively, the Red Hat Decision Manager deployment can create the clients. However, this option provides less detailed control over the environment.
  • You started the configuration of the template, as described in Section 3.2.1, “Starting configuration of the template for an immutable Decision Server from KJAR services”.

Procedure

  1. Set the KIE_ADMIN_USER and KIE_ADMIN_PASSWORD parameters of the template to the user name and password of the administrative user that you created in the RH-SSO authentication system.
  2. Set the following parameters:

    • RH-SSO URL (SSO_URL): The URL for RH-SSO.
    • RH-SSO Realm name (SSO_REALM): The RH-SSO realm for Red Hat Decision Manager.
    • RH-SSO Disable SSL Certificate Validation (SSO_DISABLE_SSL_CERTIFICATE_VALIDATION): Set to true if your RH-SSO installation does not use a valid HTTPS certificate.
  3. Complete one of the following procedures:

    1. If you created the client for Red Hat Decision Manager within RH-SSO, set the following parameters in the template:

      • Business Central RH-SSO Client name (DECISION_CENTRAL_SSO_CLIENT): The RH-SSO client name for Business Central.
      • KIE Server RH-SSO Client name (KIE_SERVER_SSO_CLIENT): The RH-SSO client name for Decision Server.
      • KIE Server RH-SSO Client Secret (KIE_SERVER_SSO_SECRET): The secret string that is set in RH-SSO for the client for Decision Server.
    2. To create the clients for Red Hat Decision Manager within RH-SSO, set the following parameters in the template:

      • KIE Server RH-SSO Client name (KIE_SERVER_SSO_CLIENT): The name of the client to create in RH-SSO for Decision Server.
      • KIE Server RH-SSO Client Secret (KIE_SERVER_SSO_SECRET): The secret string to set in RH-SSO for the client for Decision Server.
      • RH-SSO Realm Admin Username (SSO_USERNAME) and RH-SSO Realm Admin Password (SSO_PASSWORD): The user name and password for the realm administrator user for the RH-SSO realm for Red Hat Decision Manager. You must provide this user name and password in order to create the required clients.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

After completing the deployment, review the URLs for components of Red Hat Decision Manager in the RH-SSO authentication system to ensure they are correct.

3.2.7. Setting parameters for LDAP authentication for an immutable Decision Server from KJAR services

If you want to use LDAP authentication, complete the following additional configuration when configuring the template to deploy an immutable Decision Server from KJAR services.

Important

Do not configure LDAP authentication and RH-SSO authentication in the same deployment.

Prerequisites

Procedure

  1. In the LDAP service, create all user names in the deployment parameters. If you do not set any of the parameters, create users with the default user names. The created users must also be assigned to roles:

    • KIE_ADMIN_USER: default user name adminUser, roles: kie-server,rest-all,admin
    • KIE_SERVER_USER: default user name executionUser, roles kie-server,rest-all,guest

      For the user roles that you can configure in LDAP, see Roles and users.

  2. Set the AUTH_LDAP* parameters of the template. These parameters correspond to the settings of the LdapExtended Login module of Red Hat JBoss EAP. For instructions about using these settings, see LdapExtended login module.

    If the LDAP server does not define all the roles required for your deployment, you can map LDAP groups to Red Hat Decision Manager roles. To enable LDAP role mapping, set the following parameters:

    • RoleMapping rolesProperties file path (AUTH_ROLE_MAPPER_ROLES_PROPERTIES): The fully qualified path name of a file that defines role mapping, for example, /opt/eap/standalone/configuration/rolemapping/rolemapping.properties. You must provide this file and mount it at this path in all applicable deployment configurations; for instructions, see Section 3.3, “(Optional) Providing the LDAP role mapping file”.
    • RoleMapping replaceRole property (AUTH_ROLE_MAPPER_REPLACE_ROLE): If set to true, mapped roles replace the roles defined on the LDAP server; if set to false, both mapped roles and roles defined on the LDAP server are set as user application roles. The default setting is false.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

3.2.8. Enabling Prometheus metric collection for an immutable Decision Server from KJAR services

If you want to configure your Decision Server deployment to use Prometheus to collect and store metrics, enable support for this feature in Decision Server at deployment time.

Prerequisites

Procedure

To enable support for Prometheus metric collection, set the Prometheus Server Extension Disabled (PROMETHEUS_SERVER_EXT_DISABLED) parameter to false.

Next steps

If necessary, set additional parameters.

To complete the deployment, follow the procedure in Section 3.2.9, “Completing deployment of the template for an immutable Decision Server from KJAR services”.

For instructions about configuring Prometheus metrics collection, see Managing and monitoring Decision Server.

3.2.9. Completing deployment of the template for an immutable Decision Server from KJAR services

After setting all the required parameters in the OpenShift Web UI or in the command line, complete deployment of the template.

Procedure

Depending on the method that you are using, complete the following steps:

  • In the OpenShift Web UI, click Create.

    • If the This will create resources that may have security or project behavior implications message appears, click Create Anyway.
  • Complete the command line and press Enter.

3.3. (Optional) Providing the LDAP role mapping file

If you configure the AUTH_ROLE_MAPPER_ROLES_PROPERTIES parameter, you must provide a file that defines the role mapping. Mount this file on all affected deployment configurations.

Procedure

  1. Create the role mapping properties file, for example, my-role-map. The file must contain entries in the following format:

    ldap_role = product_role1, product_role2...

    For example:

    admins = kie-server,rest-all,admin
  2. Create an OpenShift configuration map from the file by entering the following command:

    oc create configmap ldap-role-mapping --from-file=<new_name>=<existing_name>

    Replace <new_name> with the name that the file is to have on the pods (it must be the same as the name specified in the AUTH_ROLE_MAPPER_ROLES_PROPERTIES file) and <existing_name> with the name of the file that you created. Example:

    oc create configmap ldap-role-mapping --from-file=rolemapping.properties=my-role-map
  3. Mount the configuration map on every deployment configuration that is configured for role mapping.

    The following deployment configurations can be affected in this environment:

    • myapp-kieserver: Decision Server

    Replace myapp with the application name. Sometimes, several Decision Server deployments can be present under different application names.

    For every deployment configuration, run the command:

     oc set volume dc/<deployment_config_name> --add --type configmap --configmap-name ldap-role-mapping --mount-path=<mapping_dir> --name=ldap-role-mapping

    Replace <mapping_dir> with the directory name (without file name) set in the AUTH_ROLE_MAPPER_ROLES_PROPERTIES parameter, for example, /opt/eap/standalone/configuration/rolemapping .