Deploy Kubernetes Applications on Google Cloud

GSP318 — Deploy Kubernetes Applications on Google Cloud: Challenge Lab

Estimated time: 1 hour 45 minutes

# 🚀 Deploy Kubernetes Applications on Google Cloud: Challenge Lab > ⚠️ **Disclaimer:** This guide is provided for educational and learning purposes only. It is intended to help you understand Google Cloud Kubernetes application deployment, Docker image building, Artifact Registry, Google Kubernetes Engine (GKE), container images, image tagging, repositories, and cloud-native deployment workflows while preparing for Google Cloud certifications and hands-on Challenge Labs. Always follow the offi

clear

# ==============================================================================
# Color Variables & Orbit of Ops Branding
# ==============================================================================
RED='\e[1;31m'
GREEN='\e[1;32m'
YELLOW='\e[1;33m'
BLUE='\e[1;34m'
MAGENTA='\e[1;35m'
CYAN='\e[1;36m'
WHITE='\e[1;37m'
BOLD='\e[1m'
RESET='\e[0m'

echo -e "${CYAN}${BOLD}"
cat << "EOF"
  ____       _     _ _            __    ___            
 / __ \     | |   (_) |          / _|  / _ \           
| |  | |_ __| |__  _| |_   ___  | |_  | | | |_ __  ___ 
| |  | | '__| '_ \| | __| / _ \ |  _| | | | | '_ \/ __|
| |__| | |  | |_) | | |_ | (_) || |   | |_| | |_) \__ \
 \____/|_|  |_.__/|_|\__| \___/ |_|    \___/| .__/|___/
                                            | |        
                                            |_|        
EOF
echo -e "${RESET}"
echo -e "${MAGENTA}${BOLD} 🚀 Starting Orbit of Ops Execution (GSP318)... ${RESET}"
echo -e "${BLUE}--------------------------------------------------------------------------------${RESET}\n"

# ==============================================================================
# PRE-FLIGHT CHECKS & VARIABLES (DYNAMIC AUTO-FETCH)
# ==============================================================================
echo -e "${BOLD}${YELLOW}[Orbit of Ops] Auto-fetching Project, Zone, and Region...${RESET}"

export PROJECT_ID=$(gcloud config get-value project 2>/dev/null)
if [[ -z "$PROJECT_ID" ]]; then
    export PROJECT_ID=$DEVSHELL_PROJECT_ID
fi

export ZONE=$(gcloud compute project-info describe \
    --format="value(commonInstanceMetadata.items[google-compute-default-zone])" 2>/dev/null | tail -n 1)

if [[ -z "$ZONE" ]]; then
    echo -e "${BOLD}${RED}⚠️ Could not auto-detect the default zone via gcloud metadata.${RESET}"
    echo -ne "${BOLD}${CYAN}Please enter the lab Zone (e.g., us-east1-c): ${RESET}"
    read ZONE
    export ZONE
fi

export REGION=${ZONE%-*}

gcloud config set compute/zone $ZONE 2>/dev/null
gcloud config set compute/region $REGION 2>/dev/null

echo -e "✅ Project ID: ${GREEN}$PROJECT_ID${RESET}"
echo -e "✅ Zone:       ${GREEN}$ZONE${RESET}"
echo -e "✅ Region:     ${GREEN}$REGION${RESET}\n"
echo -e "${BLUE}--------------------------------------------------------------------------------${RESET}\n"

# ==============================================================================
# USER INPUT
# ==============================================================================
echo -e "${BOLD}${YELLOW}⚠️ ATTENTION: Check your lab instructions for the following values: ${RESET}"

echo -ne "${BOLD}${CYAN}Enter the Docker Image Name (from Task 1): ${RESET}"
read IMAGE_NAME

echo -ne "${BOLD}${CYAN}Enter the Docker Tag Name (from Task 1): ${RESET}"
read TAG_NAME

echo -ne "${BOLD}${CYAN}Enter the Artifact Registry Repository Name (from Task 3): ${RESET}"
read REPOSITORY_NAME

echo -e "\n${BLUE}--------------------------------------------------------------------------------${RESET}\n"

# ==============================================================================
# MAIN SCRIPT EXECUTION
# ==============================================================================

echo -e "${BOLD}${CYAN}[Orbit of Ops] Initializing lab grading scripts...${RESET}"
source <(gsutil cat gs://spls/gsp318/script.sh)

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 1: Downloading source code and creating Dockerfile...${RESET}"
gsutil cp gs://spls/gsp318/valkyrie-app.tgz .
tar -xzf valkyrie-app.tgz
cd valkyrie-app

cat > Dockerfile <<EOF
FROM golang:1.10
WORKDIR /go/src/app
COPY source .
RUN go install -v
ENTRYPOINT ["app","-single=true","-port=8080"]
EOF

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 1: Building local Docker image...${RESET}"
docker build -t $IMAGE_NAME:$TAG_NAME .

# Run local grading scripts if they exist
cd ..
[ -f step1.sh ] && bash step1.sh
[ -f step1_v2.sh ] && bash step1_v2.sh
cd valkyrie-app

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 2: Testing Docker image locally...${RESET}"
docker run -d -p 8080:8080 $IMAGE_NAME:$TAG_NAME

# Run local grading scripts if they exist
cd ..
[ -f step2.sh ] && bash step2.sh
[ -f step2_v2.sh ] && bash step2_v2.sh
cd valkyrie-app

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 3: Creating Artifact Registry and configuring Docker auth...${RESET}"
gcloud artifacts repositories create $REPOSITORY_NAME \
    --repository-format=docker \
    --location=$REGION \
    --description="Valkyrie App Repository" \
    --quiet

gcloud auth configure-docker $REGION-docker.pkg.dev --quiet

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 3: Tagging and pushing image to Artifact Registry...${RESET}"
docker tag $IMAGE_NAME:$TAG_NAME $REGION-docker.pkg.dev/$PROJECT_ID/$REPOSITORY_NAME/$IMAGE_NAME:$TAG_NAME
docker push $REGION-docker.pkg.dev/$PROJECT_ID/$REPOSITORY_NAME/$IMAGE_NAME:$TAG_NAME

echo -e "\n${BOLD}${CYAN}[Orbit of Ops] Task 4: Creating and exposing Kubernetes deployment...${RESET}"
sed -i "s|IMAGE_HERE|$REGION-docker.pkg.dev/$PROJECT_ID/$REPOSITORY_NAME/$IMAGE_NAME:$TAG_NAME|g" k8s/deployment.yaml

gcloud container clusters get-credentials valkyrie-dev --zone $ZONE --quiet

kubectl create -f k8s/deployment.yaml
kubectl create -f k8s/service.yaml

# ==============================================================================
# COMPLETION
# ==============================================================================
echo -e "\n${MAGENTA}${BOLD}╔════════════════════════════════════════════════════════════╗${RESET}"
echo -e "${MAGENTA}${BOLD}║            🎉 AUTOMATION COMPLETED SUCCESSFULLY 🎉           ║${RESET}"
echo -e "${MAGENTA}${BOLD}╚════════════════════════════════════════════════════════════╝${RESET}"
echo -e "${GREEN}${BOLD}You can now safely click ALL 'Check my progress' buttons in your lab manual.${RESET}"
echo -e "${CYAN}${BOLD}Subscribe to Orbit of Ops: https://www.youtube.com/@orbitofops/videos${RESET}\n"