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My Openshift Cheatsheet

Project Quotes, Limits and Templates

• Cluster Quota

oc create clusterquota env-qa \
    --project-label-selector environment=qa \
    --hard pods=10,services=5
    
oc create clusterquota user-qa \

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• to perform a simple SELECT * FROM PLANE;

		CriteriaBuilder cb = em.getCriteriaBuilder();
		CriteriaQuery<Plane> criteria = cb.createQuery(Plane.class);
		Root<Plane> plane = criteria.from(Plane.class);
		criteria.select(plane);
		List<Plane> planes = em.createQuery(criteria).getResultList();

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Generating new Projects using maven archetypes

jBPM project

Manually create business application In case you can’t use jBPM online service to generate the application you can manually create individual projects. jBPM provides maven archetypes that can be easily used to generate the application. In fact jBPM online service uses these archetypes behind the scenes to generate business application.

• Business assets project archetype

org.kie:kie-kjar-archetype:7.46.0.Final

• Service project archetype

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		from("timer://scheduler?period=30s")
			.log("get access token")
			.to("direct:authService");

		from("direct:authService").tracing()
			.setHeader(Exchange.HTTP_PATH)
				.simple("<auth service context>/oauth2/token")
			.setHeader("CamelHttpMethod")
				.simple("POST")
			.setHeader("Content-Type")

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Red Hat Developer Hub (Early Access Program) Setup instructions

Openshift Cluster Checklist

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When on MacOS

• add a new alias to your shell (bash or zsh) to create a temporary Unix Domain Socket for podman

you need jq installed confirm the path for podman.sock with podman system connection list --format=json

podman-sock='rm -f /tmp/podman.sock && ssh -i ~/.ssh/podman-machine -p $(podman system connection list --format=json | jq ''.[0].URI'' | sed -E ''s|.+://.+@.+:([[:digit:]]+)/.+|\1|'') -L''/tmp/podman.sock:/run/user/501/podman/podman.sock'' -N core@localhost'

• set the following env vars to configure Test Containers for podman

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Simple Sample App

argocd app create demo \
--project default \
--sync-policy auto \
--repo https://github.com/codefresh-contrib/gitops-certification-examples \
--path ./blue-green-app \
--dest-namespace default \
--dest-server https://kubernetes.default.svc

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#!/bin/bash

#for DevSpaces
#Go to https://github.com/settings/applications/new
#Enter the 'Red Hat DevSpaces Workshop' as the Application Name
#Enter the Homepage URL as 'https://devspaces.apps.YOUR-cluster-domain/'
#Enter the Authorization callback URL as 'https://devspaces.apps.YOUR-cluster-domain/api/oauth/callback'
#Remember to copy the Client Id and the Client Secret values

DEV_SPACES_NAMESPACE='openshift-devspaces'

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 First you have to ensure the Java JRE is installed on your system.
 Remember the java plugin will only work on Firefox. If you prefer to install from fedora/rhel repos:
 
 sudo dnf (yum) install java-1.8.0-openjdk icedtea-web
 
 download the snx script installer from the Checkpoint VPN page:
    https://<your company vpn ip addr>/sslvpn/SNX/INSTALL/snx_install.sh
    
run int as root to install
 

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- name: Tests playbook
  hosts: localhost
  gather_facts: no
  vars:
    num_users: 10
    infra_template_object:
      - name: infra
        autoscale: false
        total_replicas: 3
        total_replicas_min: 3