feat(rollback): Add manual rollback job with multiple methods
This commit is contained in:
Claude AI
337
apps/demo-nginx/Jenkinsfile.rollback
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337
apps/demo-nginx/Jenkinsfile.rollback
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// Jenkinsfile for Manual Rollback
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// This allows rolling back to any previous version
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pipeline {
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agent any
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parameters {
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choice(
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name: 'ROLLBACK_METHOD',
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choices: ['IMAGE_TAG', 'REVISION_NUMBER', 'GIT_COMMIT'],
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description: 'Select rollback method'
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)
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string(
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name: 'TARGET_VERSION',
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defaultValue: '',
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description: '''
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Enter target version based on method:
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- IMAGE_TAG: main-21, main-20, etc.
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- REVISION_NUMBER: 1, 2, 3 (from rollout history)
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- GIT_COMMIT: abc123def (git commit SHA)
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'''
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)
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booleanParam(
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name: 'SKIP_HEALTH_CHECK',
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defaultValue: false,
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description: 'Skip health checks (use with caution!)'
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)
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booleanParam(
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name: 'DRY_RUN',
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defaultValue: false,
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description: 'Dry run - show what would happen without applying'
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)
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}
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environment {
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APP_NAME = 'demo-nginx'
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NAMESPACE = 'demo-app'
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DOCKER_REGISTRY = 'docker.io'
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DOCKER_REPO = 'vladcrypto'
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GITEA_URL = 'http://gitea-http.gitea.svc.cluster.local:3000'
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HEALTH_CHECK_TIMEOUT = '300s'
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}
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stages {
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stage('Validate Input') {
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steps {
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script {
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echo "🔍 Validating rollback request..."
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if (params.TARGET_VERSION == '') {
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error("❌ TARGET_VERSION cannot be empty!")
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}
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echo """
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📋 Rollback Configuration:
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Method: ${params.ROLLBACK_METHOD}
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Target: ${params.TARGET_VERSION}
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Skip Health Check: ${params.SKIP_HEALTH_CHECK}
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Dry Run: ${params.DRY_RUN}
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"""
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}
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}
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}
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stage('Show Current State') {
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steps {
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script {
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echo "📸 Current Deployment State:"
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sh """
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echo "=== Current Deployment ==="
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kubectl get deployment ${APP_NAME} -n ${NAMESPACE}
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echo ""
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echo "=== Current Image ==="
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kubectl get deployment ${APP_NAME} -n ${NAMESPACE} \
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-o jsonpath='{.spec.template.spec.containers[0].image}'
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echo ""
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echo ""
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echo "=== Current Pods ==="
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kubectl get pods -n ${NAMESPACE} -l app=${APP_NAME}
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echo ""
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echo "=== Rollout History ==="
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kubectl rollout history deployment/${APP_NAME} -n ${NAMESPACE}
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"""
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}
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}
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}
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stage('Prepare Rollback') {
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steps {
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script {
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echo "🔄 Preparing rollback to: ${params.TARGET_VERSION}"
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if (params.ROLLBACK_METHOD == 'IMAGE_TAG') {
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env.TARGET_IMAGE = "${DOCKER_REGISTRY}/${DOCKER_REPO}/${APP_NAME}:${params.TARGET_VERSION}"
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sh """
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echo "Target image: ${env.TARGET_IMAGE}"
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"""
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} else if (params.ROLLBACK_METHOD == 'REVISION_NUMBER') {
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env.REVISION = params.TARGET_VERSION
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sh """
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echo "Rolling back to revision: ${env.REVISION}"
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# Verify revision exists
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kubectl rollout history deployment/${APP_NAME} -n ${NAMESPACE} \
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--revision=${env.REVISION}
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"""
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} else if (params.ROLLBACK_METHOD == 'GIT_COMMIT') {
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env.GIT_SHA = params.TARGET_VERSION
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echo "Rolling back to git commit: ${env.GIT_SHA}"
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}
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}
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}
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}
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stage('Execute Rollback') {
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when {
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expression { !params.DRY_RUN }
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}
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steps {
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script {
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echo "🚀 Executing rollback..."
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if (params.ROLLBACK_METHOD == 'IMAGE_TAG') {
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// Method 1: Update image directly
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sh """
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echo "Setting image to: ${env.TARGET_IMAGE}"
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kubectl set image deployment/${APP_NAME} \
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${APP_NAME}=${env.TARGET_IMAGE} \
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-n ${NAMESPACE} \
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--record
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"""
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// Update Git manifests
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withCredentials([usernamePassword(
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credentialsId: 'gitea-credentials',
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usernameVariable: 'GIT_USER',
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passwordVariable: 'GIT_PASS'
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)]) {
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sh """
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rm -rf k3s-gitops || true
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git clone http://\${GIT_USER}:\${GIT_PASS}@gitea-http.gitea.svc.cluster.local:3000/admin/k3s-gitops.git
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cd k3s-gitops
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git config user.name "Jenkins"
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git config user.email "jenkins@thedevops.dev"
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sed -i 's|image: .*|image: ${env.TARGET_IMAGE}|' apps/demo-nginx/deployment.yaml
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git add apps/demo-nginx/deployment.yaml
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git commit -m "rollback(demo-nginx): Manual rollback to ${params.TARGET_VERSION}" || echo "No changes"
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git push origin main
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"""
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}
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} else if (params.ROLLBACK_METHOD == 'REVISION_NUMBER') {
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// Method 2: Rollback to specific revision
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sh """
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kubectl rollout undo deployment/${APP_NAME} \
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-n ${NAMESPACE} \
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--to-revision=${env.REVISION}
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"""
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} else if (params.ROLLBACK_METHOD == 'GIT_COMMIT') {
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// Method 3: Checkout specific git commit
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withCredentials([usernamePassword(
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credentialsId: 'gitea-credentials',
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usernameVariable: 'GIT_USER',
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passwordVariable: 'GIT_PASS'
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)]) {
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sh """
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rm -rf k3s-gitops || true
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git clone http://\${GIT_USER}:\${GIT_PASS}@gitea-http.gitea.svc.cluster.local:3000/admin/k3s-gitops.git
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cd k3s-gitops
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git config user.name "Jenkins"
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git config user.email "jenkins@thedevops.dev"
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# Get image from specific commit
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git checkout ${env.GIT_SHA} -- apps/demo-nginx/deployment.yaml
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TARGET_IMAGE=\$(grep 'image:' apps/demo-nginx/deployment.yaml | awk '{print \$2}')
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git checkout main
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git checkout ${env.GIT_SHA} -- apps/demo-nginx/deployment.yaml
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git add apps/demo-nginx/deployment.yaml
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git commit -m "rollback(demo-nginx): Rollback to commit ${env.GIT_SHA}" || echo "No changes"
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git push origin main
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echo "Rolled back to image: \${TARGET_IMAGE}"
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"""
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}
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}
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echo "✅ Rollback command executed"
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}
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}
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}
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stage('Wait for Rollout') {
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when {
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expression { !params.DRY_RUN }
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}
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steps {
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script {
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echo "⏳ Waiting for rollout to complete..."
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sh """
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kubectl rollout status deployment/${APP_NAME} \
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-n ${NAMESPACE} \
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--timeout=${HEALTH_CHECK_TIMEOUT}
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"""
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echo "✅ Rollout completed"
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}
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}
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}
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stage('Health Check') {
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when {
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expression { !params.DRY_RUN && !params.SKIP_HEALTH_CHECK }
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}
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steps {
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script {
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echo "🏥 Running health checks..."
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sh """
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# Check all pods are ready
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READY_PODS=\$(kubectl get deployment ${APP_NAME} -n ${NAMESPACE} -o jsonpath='{.status.readyReplicas}')
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DESIRED_PODS=\$(kubectl get deployment ${APP_NAME} -n ${NAMESPACE} -o jsonpath='{.spec.replicas}')
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echo "Ready pods: \${READY_PODS}/\${DESIRED_PODS}"
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if [ "\${READY_PODS}" != "\${DESIRED_PODS}" ]; then
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echo "❌ Not all pods are ready!"
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exit 1
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fi
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# Test health endpoint
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POD_NAME=\$(kubectl get pods -n ${NAMESPACE} -l app=${APP_NAME} -o jsonpath='{.items[0].metadata.name}')
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kubectl exec \${POD_NAME} -n ${NAMESPACE} -- wget -q -O- http://localhost/health
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"""
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echo "✅ Health checks passed"
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}
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}
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}
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stage('Show New State') {
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when {
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expression { !params.DRY_RUN }
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}
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steps {
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script {
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echo "📊 New Deployment State:"
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sh """
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echo "=== New Deployment ==="
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kubectl get deployment ${APP_NAME} -n ${NAMESPACE}
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echo ""
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echo "=== New Image ==="
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kubectl get deployment ${APP_NAME} -n ${NAMESPACE} \
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-o jsonpath='{.spec.template.spec.containers[0].image}'
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echo ""
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echo ""
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echo "=== New Pods ==="
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kubectl get pods -n ${NAMESPACE} -l app=${APP_NAME}
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"""
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}
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}
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}
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stage('Dry Run Summary') {
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when {
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expression { params.DRY_RUN }
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}
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steps {
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script {
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echo """
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🔍 DRY RUN SUMMARY
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This is what would happen:
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Method: ${params.ROLLBACK_METHOD}
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Target: ${params.TARGET_VERSION}
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Steps that would be executed:
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1. Update deployment to target version
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2. Update Git manifests
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3. Wait for rollout (timeout: ${HEALTH_CHECK_TIMEOUT})
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${params.SKIP_HEALTH_CHECK ? '4. (Health check skipped)' : '4. Run health checks'}
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No actual changes were made.
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"""
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}
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}
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}
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}
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post {
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success {
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script {
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if (params.DRY_RUN) {
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echo "✅ DRY RUN COMPLETED - No changes made"
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} else {
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echo """
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✅ ROLLBACK SUCCESSFUL!
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Application: ${APP_NAME}
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Method: ${params.ROLLBACK_METHOD}
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Target: ${params.TARGET_VERSION}
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Namespace: ${NAMESPACE}
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The application has been rolled back successfully! ✨
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"""
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}
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}
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}
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failure {
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echo """
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❌ ROLLBACK FAILED!
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Please check the logs and try again.
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Manual rollback command:
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kubectl rollout undo deployment/${APP_NAME} -n ${NAMESPACE}
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"""
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}
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}
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}
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