243 lines
8.2 KiB
Bash
243 lines
8.2 KiB
Bash
#!/bin/bash
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# Continuous Deployment Script for Kubernetes
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# This script deploys your application to a Kubernetes cluster
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# =============================================================================
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# Environment Variables (with default values)
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# =============================================================================
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# Kubernetes Configuration
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KUBECONFIG_DATA="${KUBECONFIG_DATA:-}"
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KUBERNETES_URL="${KUBERNETES_URL:-https://kubernetes.default.svc}"
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KUBERNETES_NAMESPACE="${KUBERNETES_NAMESPACE:-default}"
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KUBERNETES_INGRESS_HOST="${KUBERNETES_INGRESS_HOST:-blog-api.example.com}"
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KUBERNETES_DEPLOYMENT_REPLICAS="${KUBERNETES_DEPLOYMENT_REPLICAS:-2}"
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# Container Registry
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CONTAINER_REGISTRY_URL="${CONTAINER_REGISTRY_URL:-127.0.0.1}"
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CONTAINER_REGISTRY_USERNAME="${CONTAINER_REGISTRY_USERNAME:-username}"
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CONTAINER_REGISTRY_NAMESPACE="${CONTAINER_REGISTRY_NAMESPACE:-username}"
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CONTAINER_REGISTRY_PASSWORD="${CONTAINER_REGISTRY_PASSWORD:-password}"
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CONTAINER_IMAGE_NAME="${CONTAINER_IMAGE_NAME:-blog}"
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CONTAINER_IMAGE_TAG="${CONTAINER_IMAGE_TAG:-latest}"
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# Application Configuration
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DATABASE_DSN="${DATABASE_DSN:-postgres://postgres:password@localhost:5432/steam_union?sslmode=disable}"
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JWT_SECRET="${JWT_SECRET:-your-secret-key-change-in-production}"
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JWT_ISSUER="${JWT_ISSUER:-cialloo-authenticator}"
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JWT_EXPIRES_IN="${JWT_EXPIRES_IN:-604800}"
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S3_REGION="${S3_REGION:-us-east-1}"
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S3_BUCKET="${S3_BUCKET:-your-bucket-name}"
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S3_ACCESS_KEY_ID="${S3_ACCESS_KEY_ID:-your-access-key-id}"
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S3_SECRET_ACCESS_KEY="${S3_SECRET_ACCESS_KEY:-your-secret-access-key}"
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S3_ENDPOINT="${S3_ENDPOINT:-}"
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S3_PRESIGNED_URL_EXPIRATION="${S3_PRESIGNED_URL_EXPIRATION:-3600}"
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FORCE_RESTART="${FORCE_RESTART:-true}"
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# =============================================================================
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# Functions
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# =============================================================================
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# Print help message
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print_help() {
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echo "Usage: $0 [OPTIONS]"
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echo ""
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echo "Environment Variables:"
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echo " KUBECONFIG_DATA Kubernetes config data (base64 encoded)"
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echo " KUBERNETES_URL Kubernetes API URL (default: https://kubernetes.default.svc)"
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echo " KUBERNETES_NAMESPACE Kubernetes namespace (default: default)"
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echo " KUBERNETES_INGRESS_HOST Ingress host (default: blog-api.example.com)"
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echo " KUBERNETES_DEPLOYMENT_REPLICAS Number of pod replicas (default: 2)"
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echo " CONTAINER_REGISTRY_URL Container registry URL (default: 127.0.0.1)"
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echo " CONTAINER_REGISTRY_USERNAME Registry username"
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echo " CONTAINER_REGISTRY_PASSWORD Registry password"
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echo " CONTAINER_IMAGE_NAME Image name (default: blog)"
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echo " CONTAINER_IMAGE_TAG Image tag (default: latest)"
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echo " DATABASE_DSN Database connection string"
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echo " JWT_SECRET JWT secret key"
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echo " JWT_ISSUER JWT issuer"
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echo " JWT_EXPIRES_IN JWT expiration time in seconds"
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echo " S3_REGION S3 region"
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echo " S3_BUCKET S3 bucket name"
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echo " S3_ACCESS_KEY_ID S3 access key ID"
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echo " S3_SECRET_ACCESS_KEY S3 secret access key"
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echo " S3_ENDPOINT S3 endpoint (optional)"
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echo " S3_PRESIGNED_URL_EXPIRATION Presigned URL expiration in seconds"
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echo " FORCE_RESTART Force rollout restart (default: true)"
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echo ""
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echo "Commands:"
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echo " deploy Deploy application to Kubernetes"
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echo " help Show this help message (default)"
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}
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# Setup kubectl configuration
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setup_kubectl() {
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echo "Setting up kubectl configuration..."
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if [ -z "${KUBECONFIG_DATA}" ]; then
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echo "✗ KUBECONFIG_DATA is not set"
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return 1
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fi
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mkdir -p ~/.kube
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echo "${KUBECONFIG_DATA}" | base64 -d > ~/.kube/config
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chmod 600 ~/.kube/config
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echo "✓ kubectl configured"
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return 0
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}
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# Create namespace if it doesn't exist
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create_namespace() {
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echo "Checking namespace: ${KUBERNETES_NAMESPACE}"
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kubectl get namespace "${KUBERNETES_NAMESPACE}" &> /dev/null
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if [ $? -ne 0 ]; then
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echo "Creating namespace: ${KUBERNETES_NAMESPACE}"
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kubectl create namespace "${KUBERNETES_NAMESPACE}"
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else
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echo "✓ Namespace exists: ${KUBERNETES_NAMESPACE}"
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fi
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}
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# Create image pull secret
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create_image_pull_secret() {
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echo "Creating image pull secret..."
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kubectl create secret docker-registry regcred \
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--docker-server="${CONTAINER_REGISTRY_URL}" \
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--docker-username="${CONTAINER_REGISTRY_USERNAME}" \
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--docker-password="${CONTAINER_REGISTRY_PASSWORD}" \
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--namespace="${KUBERNETES_NAMESPACE}" \
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--dry-run=client -o yaml | kubectl apply -f -
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echo "✓ Image pull secret created/updated"
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}
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# Create or update application secrets
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create_app_secrets() {
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echo "Creating application secrets..."
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kubectl create secret generic blog-secrets \
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--from-literal=database-dsn="${DATABASE_DSN}" \
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--from-literal=jwt-secret="${JWT_SECRET}" \
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--from-literal=s3-access-key-id="${S3_ACCESS_KEY_ID}" \
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--from-literal=s3-secret-access-key="${S3_SECRET_ACCESS_KEY}" \
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--namespace="${KUBERNETES_NAMESPACE}" \
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--dry-run=client -o yaml | kubectl apply -f -
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echo "✓ Application secrets created/updated"
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}
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# Apply Kubernetes manifests
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apply_manifests() {
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echo "Applying Kubernetes manifests..."
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# Substitute environment variables in manifests
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export KUBERNETES_NAMESPACE
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export KUBERNETES_INGRESS_HOST
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export KUBERNETES_DEPLOYMENT_REPLICAS
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export CONTAINER_REGISTRY_URL
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export CONTAINER_REGISTRY_NAMESPACE
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export CONTAINER_IMAGE_NAME
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export CONTAINER_IMAGE_TAG
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export JWT_ISSUER
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export JWT_EXPIRES_IN
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export S3_REGION
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export S3_BUCKET
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export S3_ENDPOINT
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export S3_PRESIGNED_URL_EXPIRATION
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# Apply namespace
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envsubst < script/k8s/namespace.yaml | kubectl apply -f -
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# Apply deployment
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envsubst < script/k8s/deployment.yaml | kubectl apply -f -
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# Apply service
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envsubst < script/k8s/service.yaml | kubectl apply -f -
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# Apply ingress
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envsubst < script/k8s/ingress.yaml | kubectl apply -f -
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echo "✓ Manifests applied"
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}
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# Wait for deployment to be ready
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wait_for_deployment() {
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echo "Waiting for deployment to be ready..."
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kubectl rollout status deployment/blog \
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--namespace="${KUBERNETES_NAMESPACE}" \
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--timeout=300s
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if [ $? -eq 0 ]; then
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echo "✓ Deployment ready"
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return 0
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else
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echo "✗ Deployment failed"
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return 1
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fi
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}
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# Force restart deployment
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force_restart_deployment() {
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if [ "${FORCE_RESTART}" = "true" ]; then
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echo "Forcing deployment restart..."
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kubectl rollout restart deployment/blog \
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--namespace="${KUBERNETES_NAMESPACE}"
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echo "✓ Deployment restarted"
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fi
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}
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# Deploy application
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deploy() {
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echo "=========================================="
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echo "Deploying Blog Application"
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echo "=========================================="
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echo "Namespace: ${KUBERNETES_NAMESPACE}"
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echo "Image: ${CONTAINER_REGISTRY_URL}/${CONTAINER_REGISTRY_NAMESPACE}/${CONTAINER_IMAGE_NAME}:${CONTAINER_IMAGE_TAG}"
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echo "Host: ${KUBERNETES_INGRESS_HOST}"
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echo ""
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setup_kubectl || return 1
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create_namespace || return 1
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create_image_pull_secret || return 1
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create_app_secrets || return 1
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apply_manifests || return 1
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force_restart_deployment
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wait_for_deployment || return 1
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echo ""
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echo "=========================================="
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echo "✓ Deployment Successful"
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echo "=========================================="
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echo "Application URL: http://${KUBERNETES_INGRESS_HOST}"
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echo ""
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return 0
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}
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# =============================================================================
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# Main Script
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# =============================================================================
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case "$1" in
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deploy)
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deploy
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exit $?
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;;
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help|--help|-h|"")
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print_help
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exit 0
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;;
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*)
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echo "Unknown option: $1"
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echo ""
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print_help
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exit 1
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;;
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esac
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