#application using tektoncd pipelines

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Mastering OpenShift Clusters: A Comprehensive Guide for Streamlined Containerized Application Management

As organizations increasingly adopt containerization to enhance their application development and deployment processes, mastering tools like OpenShift becomes crucial. OpenShift, a Kubernetes-based platform, provides powerful capabilities for managing containerized applications. In this blog, we'll walk you through essential steps and best practices to effectively manage OpenShift clusters.

Introduction to OpenShift

OpenShift is a robust container application platform developed by Red Hat. It leverages Kubernetes for orchestration and adds developer-centric and enterprise-ready features. Understanding OpenShift’s architecture, including its components like the master node, worker nodes, and its integrated CI/CD pipeline, is foundational to mastering this platform.

Step-by-Step Tutorial

1. Setting Up Your OpenShift Cluster

Step 1: Prerequisites

Ensure you have a Red Hat OpenShift subscription.

Install oc, the OpenShift CLI tool.

Prepare your infrastructure (on-premise servers, cloud instances, etc.).

Step 2: Install OpenShift

Use the OpenShift Installer to deploy the cluster:openshift-install create cluster --dir=mycluster

Step 3: Configure Access

Log in to your cluster using the oc CLI:oc login -u kubeadmin -p $(cat mycluster/auth/kubeadmin-password) https://api.mycluster.example.com:6443

2. Deploying Applications on OpenShift

Step 1: Create a New Project

A project in OpenShift is similar to a namespace in Kubernetes:oc new-project myproject

Step 2: Deploy an Application

Deploy a sample application, such as an Nginx server:oc new-app nginx

Step 3: Expose the Application

Create a route to expose the application to external traffic:oc expose svc/nginx

3. Managing Resources and Scaling

Step 1: Resource Quotas and Limits

Define resource quotas to control the resource consumption within a project:apiVersion: v1 kind: ResourceQuota metadata: name: mem-cpu-quota spec: hard: requests.cpu: "4" requests.memory: 8Gi Apply the quota:oc create -f quota.yaml

Step 2: Scaling Applications

Scale your deployment to handle increased load:oc scale deployment/nginx --replicas=3

Expert Best Practices

1. Security and Compliance

Role-Based Access Control (RBAC): Define roles and bind them to users or groups to enforce the principle of least privilege.apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: namespace: myproject name: developer rules: - apiGroups: [""] resources: ["pods", "services"] verbs: ["get", "list", "watch", "create", "update", "delete"]oc create -f role.yaml oc create rolebinding developer-binding --role=developer --user=developer@example.com -n myproject

Network Policies: Implement network policies to control traffic flow between pods.apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: allow-same-namespace namespace: myproject spec: podSelector: matchLabels: {} policyTypes: - Ingress - Egress ingress: - from: - podSelector: {} oc create -f networkpolicy.yaml

2. Monitoring and Logging

Prometheus and Grafana: Use Prometheus for monitoring and Grafana for visualizing metrics.oc new-project monitoring oc adm policy add-cluster-role-to-user cluster-monitoring-view -z default -n monitoring oc apply -f https://raw.githubusercontent.com/coreos/kube-prometheus/main/manifests/setup oc apply -f https://raw.githubusercontent.com/coreos/kube-prometheus/main/manifests/

ELK Stack: Deploy Elasticsearch, Logstash, and Kibana for centralized logging.oc new-project logging oc new-app elasticsearch oc new-app logstash oc new-app kibana

3. Automation and CI/CD

Jenkins Pipeline: Integrate Jenkins for CI/CD to automate the build, test, and deployment processes.oc new-app jenkins-ephemeral oc create -f jenkins-pipeline.yaml

OpenShift Pipelines: Use OpenShift Pipelines, which is based on Tekton, for advanced CI/CD capabilities.oc apply -f https://raw.githubusercontent.com/tektoncd/pipeline/main/release.yaml

Conclusion

Mastering OpenShift clusters involves understanding the platform's architecture, deploying and managing applications, and implementing best practices for security, monitoring, and automation. By following this comprehensive guide, you'll be well on your way to efficiently managing containerized applications with OpenShift. 

For more details click www.qcsdclabs.com 

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https://youtu.be/3OfS5QYo77M#openshiftpipelinesusingtekton #openshift4 #tektonpipelines #CICDpipelines #continuousintegration openshift pipelines using tekton,openshift pipelines using tektonan,openshift,installing openshift pipelines,openshift pipelines based on tekton,tekton,kubernetes,openshift pipelines using tektonic,openshift pipelines tutorial using tekton,ci cd pipelines in openshift,pipelines on red hat openshift,continuous integration,red hat,cli tekton pipelines operator,application using tektoncd pipelines,tekton-pipelines,cicd,cloud-native,containers,pipelines,tektoncd,pipeline https://www.youtube.com/channel/UCnIp4tLcBJ0XbtKbE2ITrwA?sub_confirmation=1&app=desktop About: 00:00 Openshift pipelines using Tekton - Tekton pipelines with openshift In this course we will learn about OpenShift Pipelines are cloud-native, continuous integration and continuous delivery (CI/CD) solutions based on Kubernetes resources. It uses Tekton Pipelines to automate deployments across multiple platforms by abstracting away the underlying details. Tekton introduces a number of standard Custom Resource Definitions (CRDs) for defining pipelines that are portable across Kubernetes distributions. -Installing the Pipelines Operator in Web Console OpenShift Pipelines can be installed by using the operator listed in the OpenShift OperatorHub. When you install the pipelines operator, the custom resources required for the pipeline configuration are automatically installed along with the operator. -Installing the OpenShift Pipelines operator using the CLI You can install OpenShift Pipelines operator from the OperatorHub using the CLI. In the next videos we will explore Openshift4 in detail. Openshift related videos: Openshift : 1-Introduction to openshift and why openshift - introduction to openshift https://youtu.be/yeTOjwb7AYU Openshift : 2-Create openshift online account to access openshift cluster https://youtu.be/76N7RQfzm14 Openshift : 3-Introduction to openshift online cluster | overview of openshift online cluster https://youtu.be/od3qCzzIPa4 Openshift : 4-Login to openshift cluster in different ways | openshift 4 https://youtu.be/ZOAs7_1xFNA Openshift : 5-How to deploy web application in openshift web console https://youtu.be/vmDtEn_DN2A Openshift : 6-How to deploy web application in openshift command line https://youtu.be/R_lUJTdQLEg Openshift : 7-Deploy application in openshift using container images https://youtu.be/ii9dH69839o Openshift : 8-Deploy jenkins on openshift cluster - deploy jenkins on openshift | openshift https://youtu.be/976MEDGiPPQ Openshift : 9-Openshift build trigger using openshift webhooks - continuous integration with webhook triggers https://youtu.be/54_UtSDz4SE Openshift : 10-Install openshift 4 on laptop using redhat codeready containers - CRC https://youtu.be/9A05yTSjiFI Openshift : 11-Openshift pipelines using Tekton - Tekton pipelines with openshift https://youtu.be/3OfS5QYo77M https://www.facebook.com/codecraftshop/ https://t.me/codecraftshop/ Please do like and subscribe to my you tube channel "CODECRAFTSHOP" Follow us on