deploy

#!/bin/bash

# All rights reserved, Saeid Bostandoust <ssbostan@linuxmail.org>.

echo "INFO: Welcome to \"DevOps with Saeid\" class (www.devops-with-saeid.com)."

KUBECTL_BIN_PATH=$(which kubectl &> /dev/null)

if [ $? -ne 0 ]; then
    echo "ERROR: kubectl is not installed."
    exit 1
fi

kubectl get ns jenkins-stack &> /dev/null

if [ $? -eq 0 ]; then
    echo "INFO: jenkins-stack is already deployed."
    exit 0
fi

kubectl create ns jenkins-stack

echo "INFO: Creating Kubernetes services..."

kubectl apply -f registry/svc.yaml
kubectl apply -f docker/svc.yaml
kubectl apply -f gitea/svc.yaml
kubectl apply -f jenkins/svc.yaml

echo "INFO: Creating Kubernetes PVC objects..."

kubectl apply -f registry/pvc.yaml
kubectl apply -f docker/pvc.yaml
kubectl apply -f gitea/pvc.yaml
kubectl apply -f jenkins/pvc.yaml

echo "INFO: Going to deploy Docker registry..."

sleep 5

JENKINS_DOCKER_REGISTRY_IP=$(kubectl -n jenkins-stack get svc registry -o jsonpath='{ .status.loadBalancer.ingress[0].ip }')

if [ -z $JENKINS_DOCKER_REGISTRY_IP ]; then
    echo "ERROR: LoadBalancer IP is not available."
    kubectl delete ns jenkins-stack
    exit 1
fi

sed -i"" "s/subjectAltName=.*/subjectAltName=IP:$JENKINS_DOCKER_REGISTRY_IP/g" registry/openssl.conf

openssl req -newkey rsa:2048 -nodes -keyout registry.key \
  -x509 -sha256 -days 3650 -subj "/CN=docker-registry" \
  -out registry.crt -extensions san -config registry/openssl.conf &> /dev/null

if [ ! -f registry.crt ]; then
    echo "ERROR: OpenSSL cannot creates registry certificate."
    kubectl delete ns jenkins-stack
    exit 1
else
    echo "INFO: Docker registry certificate created successfully."
fi

kubectl -n jenkins-stack create secret generic registry-certs --from-file=registry.crt --from-file=registry.key

kubectl apply -f registry/cm.yaml

kubectl apply -f registry/deploy.yaml

echo "INFO: Going to deploy Docker engine..."

cat <<EOL | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata:
  name: docker-env
  namespace: jenkins-stack
  labels:
    app.kubernetes.io/name: docker
    app.kubernetes.io/part-of: jenkins
    app.kubernetes.io/scope: devops-with-saeid
    app.kubernetes.io/created-by: ssbostan
data:
    JENKINS_DOCKER_REGISTRY_IP: $JENKINS_DOCKER_REGISTRY_IP
EOL

kubectl apply -f docker/deploy.yaml

echo "INFO: Going to deploy Gitea..."

kubectl apply -f gitea/deploy.yaml

echo "INFO: Going to deploy Jenkins..."

kubectl apply -f jenkins/deploy.yaml

JENKINS_GITEA_IP=$(kubectl -n jenkins-stack get svc gitea -o jsonpath='{ .status.loadBalancer.ingress[0].ip }')

JENKINS_JENKINS_IP=$(kubectl -n jenkins-stack get svc jenkins -o jsonpath='{ .status.loadBalancer.ingress[0].ip }')

echo "INFO: jenkins-stack deployed successfully."

echo "INFO: Deployment preparation may take a while."

cat <<EOL
Jenkins URL: http://$JENKINS_JENKINS_IP
Gitea URL: http://$JENKINS_GITEA_IP
Docker registry URL: https://$JENKINS_DOCKER_REGISTRY_IP
To use the Docker registry add this code to your Docker "daemon.json" file:
{
    "insecure-registries": [
        "$JENKINS_DOCKER_REGISTRY_IP"
    ]
}
EOL