Setup Skaffold and MicroK8s for Spring Boot local development

Features coverd in this repo:

• Setup skaffold and deploy to local microk8s
• Spring boot 3.0 snapshot
• Enabled HTTP2 in Webflux and HTTPS in ingress
• Nginx ingress URL rewrite
• Simple testing case for Webflux
• Grafana, Prometheus, Pushgateway
• Simple Grafana dashboard for Webflux
• Generate self-signed cert, import into p12 keystore with openssl
• Google jib build image and register to microk8s private registry (localhost:32000)
• ConfigMap volume mapping (Secret, data, hostPath)
• Spring native build
• Spring boot k8s readiness and liveness probles monitoring

Modules enable for microk8s

• dns
• registry
• storage
• ingress
• dns
• cert-manager

Tools installed in Development VM

Oracle JDK 17 Spring Tools Suite 4 lombok skaffold microk8s

install

• oracle jdk 17-lts
• spring tool suite 4
• lombok
• docker
• openssh-server
• kubectl
• skaffold https://storage.googleapis.com/skaffold/releases/v1.39.1/skaffold-linux-amd64
• microk8s
• Maven (maven wrapper)
• VS Code + Google Cloud extension
• k9s
• helm

config

• install lombok
• add docker, microk8s group
• docker login to docker hub (for push image)
• dump microk8s config to kubectl

/etc/docker/config

{ "auths": { "https://index.docker.io/v1/": { "auth": "a3dvbmdodW5nOlhpcVFSREM0ZGQzTkNXNA==" } } }