CI/CD Infrastructure Setup: Difference between revisions

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=External=
* https://github.com/OpenShiftDemos/openshift-cd-demo/tree/ocp-3.6
=Internal=
=Internal=


Line 5: Line 9:
=Overview=
=Overview=


This is the procedure to install a CI/CD pipeline based on Jenkins. The CI/CD pipeline will execute in a separate project from the projects that need CI/CD services, named "CICD".
This article describes the procedure to install a CI/CD pipeline based on a persistent Jenkins instance and auxiliary tools ([[OpenShift Nexus|Nexus]], [[OpenShift Gogs|Gogs]], [[OpenShift SonarQube|SonarQube]]). The procedure was derived from the "CI/CD Demo - OpenShift Container Platform 3.6" https://github.com/OpenShiftDemos/openshift-cd-demo. The Jenkins instance will be a shared instance, deployed within its own dedicated "cicd" project to server any other project that may need CI/CD services.


The deployment is based on https://github.com/OpenShiftDemos/openshift-cd-demo/blob/ocp-3.5/cicd-template.yaml (or newer).
=Pre-Requisites=


A special special service account ("system:serviceaccount:CICD:jenkins") will be created for Jenkins.
==cicd Project==


==Create Required Image Streams==
Create the "cicd" project to host the Jenkins instance and auxiliaries.


{{Internal|OpenShift_Image_and_ImageStream_Operations#Create_an_Image_Stream|Create an Image Stream}}
oc new-project cicd \
  --display-name="CI/CD" \
  --description="Shared CI/CD tools to provide release pipeline services for other projects"


==Create Projects==
==Persistent Volumes==


Create the following projects:
[[OpenShift_PersistentVolume_Operations#Create_a_NFS_Persistent_Volume|Provision]] six 1Gi persistent volumes to be used by Jenkins, Nexus, Gogs data, Gogs  PostgreSQL, Sonar and Sonar Postrgres, and a smaller one (512Mi) for Gogs config.


1. A project for the CI/CD components, named "CICD":
{{Internal|OpenShift_PersistentVolume_Operations#Overview|Persistent Volume Operations}}
 
oc new-project CICD --display-name="CI/CD pipeline with Jenkins"
 
2. A project to host development-stage containers and processes, named "dev":
 
oc new-project dev --display-name="Test Development Project"


3. A project to host publicly-accessible application produced by the CI/CD pipeline, named "stage":
==Development and Production Projects==


  oc new-project stage --display-name="Test Stage Project"
  oc new-project novaordis-dev --display-name="CI/CD Demo Development Project"
oc new-project novaordis-prod --display-name="CI/CD Demo Production Project"


=Grant Required Permissions=
=Deploy Jenkins=


Jenkins components need to access the OpenShift API, so the service account that will run the Jenkins pod ("system:serviceaccount:CICD:jenkins") must be given appropriate permissions for the projects it must service:
oc new-app jenkins-persistent \
  -p MEMORY_LIMIT=6Gi \
  -p ENABLE_OAUTH=true \
  -p JVM_ARCH=x86_64 \
  -p CONTAINER_HEAP_PERCENT="0.75" \
  -p JAVA_GC_OPTS="-XX:+UseParallelGC -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=384m"
  -e INSTALL_PLUGINS=analysis-core:1.92,findbugs:4.71,pmd:3.49,checkstyle:3.49,dependency-check-jenkins-plugin:2.1.1,htmlpublisher:1.14,jacoco:2.2.1,analysis-collector:1.52 \
  -n cicd


[[Oc_policy#add-role-to-user|oc policy add-role-to-user]] admin system:serviceaccount:CICD:jenkins
For Java heap sizing considerations, see [[OpenShift_CI/CD_Concepts#Jenkins_Heap_Sizing|Jenkins Heap Sizing]].


[[Oc_policy#add-role-to-user|oc policy add-role-to-user]] edit system:serviceaccount:CICD:jenkins -n dev
For more details about template, you could run:
[[Oc_policy#add-role-to-user|oc policy add-role-to-user]] edit system:serviceaccount:CICD:jenkins -n stage


More details about Jenkins security considerations:
oc get -o yaml template jenkins-persistent -n openshift


{{Internal|Jenkins_and_OpenShift#Security_Considerations|Jenkins Security Considerations}}
The template will create a "system:serviceaccount:CICD:jenkins" service account and will assign it sufficient privileges. The template will also enable OAuth with the Jenkins instance.  
 
=Provision a Persistent Volume=
 
"jenkins-persistent" requires a persistent volume, which must be provisioned before the installation.
 
{{Internal|OpenShift_PersistentVolume_Operations#Overview|Persistent Volume Operations}}


=Create the Jenkins Components=
The initialization process' logs can be viewed with:


{{External|https://github.com/openshift/origin/blob/master/examples/jenkins/README.md}}
oc logs -f jenkins-1-...


Jenkins instance won't be integrated into the OAuth infrastructure, so authentication must be done independently (admin/password).
Once Jenkins is fully on-line, it can be logged into via the newly deployed route, using an OpenShift user (OAuth is enabled).


Make sure to specify a volume capacity in sync with the capacity of the persistent volume that was provisioned for Jenkins.
==Access Permissions==


oc new-app jenkins-persistent -p MEMORY_LIMIT=2Gi -p VOLUME_CAPACITY=2Gi -p ENABLE_OAUTH=false
Jenkins will perform CI/CD services for "novaordis-dev" and "novaordis-prod", so the service account that is associated with the Jenkins pod ("jenkins") must have "edit" permission in those projects:


Successful run output:
oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n novaordis-dev
oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n novaordis-prod


<pre>
More details on CI/CD security considerations: {{Internal|OpenShift CI/CD Concepts#Security_Considerations|Jenkins Security Considerations}}
--> Deploying template "openshift/jenkins-persistent" to project lab-nodejs


    Jenkins (Persistent)
=Share Jenkins=
    ---------
    Jenkins service, with persistent storage.


    NOTE: You must have persistent volumes available in your cluster to use this template.
It is probably a good idea to leave Jenkins auto-provisioning enabled in [[Master-config.yml#autoProvisionEnabled|master-config.yml]], for all projects that are not configured to share a Jenkins instance and need CI/CD services. For those projects that should use the shared Jenkins instances, <font color=red>TODO</font>.


    A Jenkins service has been created in your project.  Log into Jenkins with your OpenShift account.  The tutorial at https://github.com/openshift/origin/blob/master/examples/jenkins/README.md contains more information about using this template.
=Deploy Auxiliary Tools=


    * With parameters:
All auxiliary tools (Gogs, Nexus, Sonarqube) and a pipeline definition will be deployed by running the following template  https://github.com/NovaOrdis/playground/blob/master/openshift/auxiliary-tools/novaordis-cicd.yaml. The template is based on https://github.com/OpenShiftDemos/openshift-cd-demo/blob/ocp-3.6/cicd-template-with-sonar.yaml.
        * Jenkins Service Name=jenkins
        * Jenkins JNLP Service Name=jenkins-jnlp
        * Enable OAuth in Jenkins=false
        * Jenkins JVM Architecture=i386
        * Memory Limit=2Gi
        * Volume Capacity=2Gi
        * Jenkins ImageStream Namespace=openshift
        * Jenkins ImageStreamTag=jenkins:latest


--> Creating resources ...
oc process -f ./novaordis-cicd.yaml \
    route "jenkins" created
  -p GOGS_PASSWORD=<''gogs-password''> \
    persistentvolumeclaim "jenkins" created
  -p DEV_PROJECT=<''dev-project-name''> \
    deploymentconfig "jenkins" created
  -p STAGE_PROJECT=<''stage-project-name''> \
    serviceaccount "jenkins" created
    rolebinding "jenkins_edit" created
    service "jenkins-jnlp" created
    service "jenkins" created
--> Success
    Run 'oc status' to view your app.
</pre>


=Post-Install Adjustments=
All auxiliary tools will run using the "default" service account, and the template contains configuration instructions to elevate its privileges to "edit". For more details on CI/CD security considerations see [[OpenShift_CI/CD_Concepts#Security_Considerations|CI/CD Security Considerations]].


==Adjust Readiness Probe Timeout==
A script that reverts the entire installation is https://github.com/NovaOrdis/playground/blob/master/openshift/auxiliary-tools/clean-cicd.sh


  [[Oc_set#probe|oc set probe]] dc jenkins --readiness --initial-delay-seconds=500
Validation:
* Gogs Porstgres must be on-line and the liveness and readiness probes must pass.
* Gogs must be available at https://gogs-cicd.apps.openshift.novaordis.io/.
* "openshift-tasks" must be cloned in Gogs.
* Nexus must be available at https://nexus-cicd.apps.openshift.novaordis.io
* Sonarqube must be available at https://sonarqube-cicd.apps.openshift.novaordis.io


=Configure the Jenkins Pipeline=
Individual components installation notes:
* [[OpenShift Gogs#Installation|OpenShift Gogs Installation]].
* [[OpenShift_Nexus#Installation|OpenShift Nexus Installation]]
* [[OpenShift_SonarQube#Operations|OpenShift SonarQube Installation]]


{{Internal|OpenShift_CI/CD_Operations#Configure_the_Jenkins_Pipeline|Configure the Jenkins Pipeline}}
At the end, run it end to end and change all passwords - do not check them in in GitHub.

Latest revision as of 06:58, 19 October 2018

External

Internal

Overview

This article describes the procedure to install a CI/CD pipeline based on a persistent Jenkins instance and auxiliary tools (Nexus, Gogs, SonarQube). The procedure was derived from the "CI/CD Demo - OpenShift Container Platform 3.6" https://github.com/OpenShiftDemos/openshift-cd-demo. The Jenkins instance will be a shared instance, deployed within its own dedicated "cicd" project to server any other project that may need CI/CD services.

Pre-Requisites

cicd Project

Create the "cicd" project to host the Jenkins instance and auxiliaries. 

oc new-project cicd \
  --display-name="CI/CD" \
  --description="Shared CI/CD tools to provide release pipeline services for other projects"

Persistent Volumes

Provision six 1Gi persistent volumes to be used by Jenkins, Nexus, Gogs data, Gogs PostgreSQL, Sonar and Sonar Postrgres, and a smaller one (512Mi) for Gogs config.

Persistent Volume Operations

Development and Production Projects

oc new-project novaordis-dev --display-name="CI/CD Demo Development Project"
oc new-project novaordis-prod --display-name="CI/CD Demo Production Project"

Deploy Jenkins

oc new-app jenkins-persistent \
  -p MEMORY_LIMIT=6Gi \
  -p ENABLE_OAUTH=true \
  -p JVM_ARCH=x86_64 \
  -p CONTAINER_HEAP_PERCENT="0.75" \
  -p JAVA_GC_OPTS="-XX:+UseParallelGC -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=384m"
  -e INSTALL_PLUGINS=analysis-core:1.92,findbugs:4.71,pmd:3.49,checkstyle:3.49,dependency-check-jenkins-plugin:2.1.1,htmlpublisher:1.14,jacoco:2.2.1,analysis-collector:1.52 \
  -n cicd

For Java heap sizing considerations, see Jenkins Heap Sizing.

For more details about template, you could run: 

oc get -o yaml template jenkins-persistent -n openshift

The template will create a "system:serviceaccount:CICD:jenkins" service account and will assign it sufficient privileges. The template will also enable OAuth with the Jenkins instance.

The initialization process' logs can be viewed with: 

oc logs -f jenkins-1-...

Once Jenkins is fully on-line, it can be logged into via the newly deployed route, using an OpenShift user (OAuth is enabled).

Access Permissions

Jenkins will perform CI/CD services for "novaordis-dev" and "novaordis-prod", so the service account that is associated with the Jenkins pod ("jenkins") must have "edit" permission in those projects: 

oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n novaordis-dev
oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n novaordis-prod

More details on CI/CD security considerations:

Jenkins Security Considerations

Share Jenkins

It is probably a good idea to leave Jenkins auto-provisioning enabled in master-config.yml, for all projects that are not configured to share a Jenkins instance and need CI/CD services. For those projects that should use the shared Jenkins instances, TODO.

Deploy Auxiliary Tools

All auxiliary tools (Gogs, Nexus, Sonarqube) and a pipeline definition will be deployed by running the following template https://github.com/NovaOrdis/playground/blob/master/openshift/auxiliary-tools/novaordis-cicd.yaml. The template is based on https://github.com/OpenShiftDemos/openshift-cd-demo/blob/ocp-3.6/cicd-template-with-sonar.yaml. 

oc process -f ./novaordis-cicd.yaml \
  -p GOGS_PASSWORD=<gogs-password> \
  -p DEV_PROJECT=<dev-project-name> \
  -p STAGE_PROJECT=<stage-project-name> \

All auxiliary tools will run using the "default" service account, and the template contains configuration instructions to elevate its privileges to "edit". For more details on CI/CD security considerations see CI/CD Security Considerations.

A script that reverts the entire installation is https://github.com/NovaOrdis/playground/blob/master/openshift/auxiliary-tools/clean-cicd.sh

Validation:

Individual components installation notes:

At the end, run it end to end and change all passwords - do not check them in in GitHub.

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