K8s

.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

Chart.yaml

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+apiVersion: v2
+name: hello-world-war
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

Dockerfile

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+FROM maven:3.3-jdk-8 as mavenbuilder
+ARG DIR=/home/devops
+WORKDIR $DIR
+COPY . .
+RUN /usr/bin/mvn clean install
+RUN ls target/
+RUN which mvn
+FROM tomcat:9.0
+ARG DIR=/home/devops/target
+COPY --from=mavenbuilder ${DIR}/hello-world-war-1.0.0.war /usr/local/tomcat/webapps/

Jenkinsfile

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+pipeline {
+    agent any
+
+    stages {
+        stage('checkout') {
+            steps {
+                sh 'rm -rf hello-world-war'
+                sh 'git clone -b k8s https://github.com/tarundanda147/hello-world-war.git'
+            }
+        }
+
+        stage('build') {
+            steps {
+                dir("hello-world-war") {
+                    sh 'echo "inside build"'
+                    sh "docker build -t tomcat-war:${BUILD_NUMBER} ."
+                }
+            }
+        }
+
+        stage('push') {
+            steps {
+                withCredentials([usernamePassword(credentialsId: '773e6289-72b6-476b-9e54-19702f9fb5d3', usernameVariable: 'DOCKER_USERNAME', passwordVariable: 'DOCKER_PASSWORD')]) {
+                    sh "docker login -u ${DOCKER_USERNAME} -p ${DOCKER_PASSWORD}"
+                    sh "docker tag tomcat-war:${BUILD_NUMBER} tarundanda147/tomcat:${BUILD_NUMBER}"
+                    sh "docker push tarundanda147/tomcat:${BUILD_NUMBER}"
+                }
+            }
+        }
+
+        stage('Helm Deploy') {
+            steps {
+                // Authenticate with AWS using IAM credentials stored in Jenkins
+                withCredentials([[
+                    $class: 'AmazonWebServicesCredentialsBinding',
+                    credentialsId: '03bb86f5-d824-42dd-b9c7-da3dc566f56c',
+                    accessKeyVariable: 'AWS_ACCESS_KEY_ID',
+                    secretKeyVariable: 'AWS_SECRET_ACCESS_KEY'
+                ]]) {
+                    sh "aws eks --region us-east-1 update-kubeconfig --name eks-cluster"
+                    echo 'Deploying to Kubernetes using Helm'
+                    // Deploy Helm chart to Kubernetes cluster
+                    sh "helm upgrade first  /var/lib/jenkins/workspace/eks-docker/hello-world-war --namespace hello-world-war --set image.tag=$BUILD_NUMBER --dry-run"
+                    sh "helm upgrade first  /var/lib/jenkins/workspace/eks-docker/hello-world-war --namespace hello-world-war --set image.tag=$BUILD_NUMBER"
+                }
+            }
+        }
+    }
+}

artifactory

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+pipeline {
+    agent { label 'java' }
+    stages {
+        stage('checkout') {
+            steps {
+                sh 'rm -rf bus_booking'
+                sh 'git clone https://github.com/tarundanda147/bus_booking.git'
+            }
+        }
+
+        stage('build') {
+            steps {
+                script {
+                    sh "mvn clean install"
+                }
+            }
+        }
+		stage('Deploy to JFrog Artifactory') {
+            steps {
+               // Remember this is the step which I followed for free style project.
+                script {
+                    rtServer(
+                        id: "Artifact",
+                        url: "http://13.238.154.172:8081/artifactory",
+                        username: "jenkins",
+                        password: "passwd"
+                    )
+                }
+            }
+        }
+
+        stage('Upload') {
+            steps {
+                script {
+		// For my  undertanding rtUpload is a part of jFrog Artifactory plugin to upload artifacts to artifacts repo
+                    rtUpload (
+                        serverId: 'Artifact',
+                        spec: '''{
+                            "files": [
+                                {
+                                    "pattern": "target/*.jar",
+                                    "target": "libs-release-local/"
+                                }
+                            ]
+                        }'''
+                    )
+                }
+            }
+        }
+
+        stage('Publish build info') {
+            steps {
+                script {
+		    // For my understanding to publish build info
+                    rtPublishBuildInfo serverId: "Artifact"
+                }
+            }
+        }
+    }
+}

templates/deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: myreplica
+  labels:
+    app: {{ .Values.deploymentLabel }}
+spec:
+  replicas: {{ .Values.replicas }}
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+  selector:
+    matchLabels:
+      app: {{ .Values.deploymentLabel }}
+  template:
+    metadata:
+      name: {{ .Values.deploymentLabel }}
+      labels:
+        app: {{ .Values.deploymentLabel }}
+    spec:
+      containers:
+        - name: {{ .Values.deploymentLabel }}
+          image: {{ .Values.imageName }}:{{ .Values.image.tag }}
+      imagePullSecrets:
+        - name: regcred
+          env:
+            - name: TOMCAT_OPTS
+              value: --prefix=/tomcat
+          volumeMounts:
+            - name: {{ .Values.volumeName }}
+              mountPath: /usr/local/tomcat/webapps
+      volumes:
+        - name: {{ .Values.volumeName }}
+          persistentVolumeClaim:
+            claimName: {{ .Values.claimName }}
+

templates/ingress-route.yml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ .Values.ingressName }}
+spec:
+  ingressClassName: nginx
+  rules:
+  - http:
+      paths:
+      - path: /hello-world-war-1.0.0
+        pathType: Prefix
+        backend:
+          service:
+            name: {{ .Values.serviceName }}
+            port:
+              number: 8090

templates/pvc.yml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ .Values.claimName }}
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: {{ .Values.storageClass }}
+  resources:
+    requests:
+      storage: {{ .Values.requestStorage }}

templates/secrets.yml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: regcred
+type: kubernetes.io/dockerconfigjson
+data:
+  .dockerconfigjson: |-
+    ewogICAgImF1dGhzIjogewogICAgICAgICJodHRwczovL2luZGV4LmRvY2tlci5pby92MS8iOiB7CiAgICAgICAgICAgICJ1c2VybmFtZSI6ICJ0YXJ1bmRhbmRhMTQ3IiwKICAgICAgICAgICAgInBhc3N3b3JkIjogImRja3JfcGF0XzEtMk9nVFczNFlIMnFDb00zWnFvSTBKU2lJRSIsCiAgICAgICAgICAgICJlbWFpbCI6ICJob25leWNvY28xNDdAZ21haWwuY29tIgogICAgICAgIH0KICAgIH0KfQoK

templates/service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Values.serviceName }}
+spec:
+  type: ClusterIP
+  selector:
+    app: {{ .Values.deploymentLabel }}
+  ports:
+    - name: podport
+      protocol: TCP
+      port: 8090
+      targetPort: 8080

templates/storageclass.yml

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+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: {{ .Values.storageClass }}
+provisioner: ebs.csi.aws.com
+volumeBindingMode: WaitForFirstConsumer

values.yaml

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+deploymentName: "my-tomcat"
+deploymentLabel: "tomcat"
+replicas: 1
+volumeName: "volume-tomcat"
+claimName: "claim-tomcat"
+storageClass: "tomcat-ebs"
+requestStorage: "5Gi"
+serviceName: "tomcat"
+ingressName: "tomcat-ingress"
+imageName: "tarundanda147/tomcat"
+imageTag: "lts"