About Jenkins Pipeline

Oracle WebLogic Server for OKE deploys Jenkins to the Kubernetes cluster along with your stack, and uses the Jenkins Pipeline to provision a domain, deploy applications, automatic patches, and update the domain images.

Jenkins Pipeline, also referred to as Pipeline, is a suite of plug-ins that supports implementation and integration of continuous delivery (CI/CD) pipelines into Jenkins. The definition of the Pipeline is written in a Jenkinsfile, a text file that can be committed to a project's source control repository.

The CI/CD Pipeline uses Oracle WebLogic Deploy Tooling (WDT) and Oracle WebLogic Image Tool (WIT) to update the domain to deploy applications, libraries, and resources; apply JDK and WebLogic Server patches; and update an existing image.

See Oracle WebLogic Server Deploy Tooling and Oracle WebLogic Image Tool.

The images are pushed and pulled within the same regions as deployments using the Oracle Cloud Infrastructure Registry (OCIR) service. See Overview of Registry.

The features of Pipeline are:

• Pipelines can be implemented in code and version controlled.

• Pipelines can be paused at any stage for user inputs or approval.

• Pipelines support complex CD requirements that enables forking or joining, looping and executing stages in parallel.

• Pipelines support domain-specific language (DSL) extension.

Jenkins Pipeline jobs are used to deploy applications and patches. See:

• Pipeline Jobs
• Pipeline Jobs With Verrazzano Installation

Pipeline Jobs

Oracle WebLogic Server for OKE has a set of preconfigured jobs to deploy applications and patches.

Table 1-1 Preconfigured Jobs

Job Type	Job Name	Description
Main	create domain on pv	Creates an Oracle WebLogic Server domain home in a Kubernetes Persistent Volume (PV) using the domain creation images. You can use the Domain on PV domain home source type to create a non-Java Required Files (JRF) domain or a Java Required Files domain.
Main	create mii domain	Creates an Oracle WebLogic Server domain using the Model in Image (MII) domain home source type with auxillary images. You can use the Model in Image domain home source type to create a non-Java Required Files (JRF) domain.
Main	update mii domain	Updates the domain configuration for the Model in Image domain. Deploys and undeploys applications, shared libraries and resources such as Java Messaging Service (JMS) and datasources to a Model in Image domain. Note: If you are using the Domain on PV approach to set up a WebLogic domain, you can update the domain using the WebLogic Server Administration Console or the WebLogic Scripting Tool (WLST).
Main	automatic patching	Automatically applies patches on the selected domains, as per the schedule.
Main	apply patch	Applies OPatches on the base image of the domain for both Model in Image domain and Domain on PV.
Main	create base image	Creates a new base image from Fusion Middleware installer, JDK installer, and JDK patches. Used to create the base image for both Model in Image domain and Domain on PV.
Main	update base image	Updates a base image of a domain with a different base image. Used to update the base image for both Model in Image domain and Domain on PV.
Main	terminate mii domain	Deletes the IDCS, external load balancer, WebLogic domain, and the Kubernetes namespaces that were created for the Model in Image domain. Additionally, the job also deletes the node pool associated with the domain if you opt to delete the nodepool at the time of terminating the domain. See Terminate a WebLogic Domain.
Main	terminate pv domain	Deletes the IDCS, external load balancer, WebLogic domain, and the Kubernetes namespaces that were created for the Domain on PV. Additionally, the job also deletes the node pool associated with the domain if you opt to delete the nodepool at the time of terminating the domain. See Terminate a WebLogic Domain.
Child	backup and deploy domain	Creates a backup of the Yaml file of the running domain and deploys the changes on the running domain. This job is used by other pipeline jobs and cannot be activated manually. This is a child job for the update mii domain, update base image, and apply patch jobs.
Child	create wls nodepool	This is a child job for the create mii domain and create pv domain jobs.

Pipeline Jobs With Verrazzano Installation

Oracle WebLogic Server for OKE has a set of preconfigured jobs to deploy applications.

The following table lists the preconfigured jobs for Oracle WebLogic Server for OKE stack with Verrazzano. These preconfigured jobs are main job type.

Table 1-2 Preconfigured Jobs in Verrazzano

Job Name	Description
create domain as component	Creates an empty WebLogic domain with a container image and component.yaml file using the selected base image. This image can be used to register the Verrazzano WebLogic component and deploy applications.
update domain in component	Deploys and undeploys applications, shared libraries and resources such as Java Messaging Service (JMS) and datasources to a domain.
create base image	Creates new image from Fusion Middleware installer, JDK installer, and JDK patches. This new image can be used to create a new domain or update an existing domain..
rebase component image	Updates a base image of a Verrazzano WebLogic component with a different base image.
register component	Creates a domain definition using component.yaml. This job is used to create new empty WebLogic domain or update an existing WebLogic domain.
configure application	Deploys a Verrazzano application with WebLogic workloads.
terminate component	Deletes the Verrazzano component, RCU, WebLogic domain, Kubernetes namespaces, persistent volume that we created for the domain.
unregister component	Deletes the Verrazzano WebLogic component.
unregister application	Deletes the application configuration of the Verrazzano WebLogic component.