Google Cloud Build: Deploying to Google Kubernetes Engine
Cloud Build has made deploying to Google Kubernetes Engine very easy.
Here are the steps required to deploy a static site compiled with Hugo and served by Caddy with HTTPS to Kubernetes. For debugging purposes we make a file containing the first 7 characters of the commit SHA, this can be accessed at https://bana.io/VERSION, so that we can verify a new version was deployed on Kubernetes. If you're using Google Cloud Platform, this is very simple if you ask me.
# Prerequisites
Follow the Deploying artifacts steps so that you can use kubectl to deploy to Kubernetes Engine.
# cloudbuild.yaml
steps:
# Cloud Build isn't handling submodules at the moment, so we manually clone it into the themes directory.
- name: "gcr.io/cloud-builders/git"
args: ["clone", "--depth", "1", "https://github.com/calintat/minimal.git"]
dir: "/workspace/themes"
# Store the git sha so that we know what version of the site we are at
- name: "ubuntu"
args: ["bash", "-c", "echo $SHORT_SHA > VERSION && date --iso-8601=seconds >> VERSION && ls -lah"]
# Double-chek that VERSION was persisted in the workspace
- name: "ubuntu"
args: ["bash", "-c", "cat VERSION"]
# use Docker Compose to build instead of Docker
- name: "docker/compose:1.15.0"
args: ["build"]
# push the images just before we update the Kubernetes deployment
- name: "gcr.io/cloud-builders/docker"
args: ["push", "gcr.io/www-bana-io/www-bana-io:latest"]
# update the deployment
- name: "gcr.io/cloud-builders/kubectl"
args: ["patch", "deployment", "www-bana-io", "-p", "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"SHORT_SHA\":\"$SHORT_SHA\"}}}}}"]
env:
- "CLOUDSDK_COMPUTE_ZONE=us-central1-a"
- "CLOUDSDK_CONTAINER_CLUSTER=www-bana-io-cluster"
images:
- "gcr.io/www-bana-io/www-bana-io"
tags:
- "www-bana-io"
- "frontend"
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# docker-compose.yaml
version: "3"
services:
www-bana-io:
image: gcr.io/www-bana-io/www-bana-io:latest
container_name: www-bana-io
hostname: www-bana-io
build:
context: .
dockerfile: ./Dockerfile
volumes:
- caddy-certs:/root/.caddy/
ports:
- 80:80
- 443:443
labels:
kompose.service.type: loadbalancer
volumes:
caddy-certs:
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# Caddyfile
bana.io www.bana.io {
tls bana@bana.io
log stdout
errors stderr
browse
gzip
}
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# Dockerfile
FROM klakegg/hugo:0.45-alpine-onbuild AS hugo
FROM abiosoft/caddy:0.11.0-no-stats
# auto-agree to Let's Encrypt Subscriber Agreement
ENV ACME_AGREE true
COPY ./Caddyfile /etc/Caddyfile
COPY /onbuild /srv
COPY ./VERSION /srv/VERSION
RUN echo -e "\033[92m ---> ls -lah /srv/ \033[0m"; ls -lah /srv/; true;
RUN echo -e "\033[92m ---> cat VERSION \033[0m"; cat /srv/VERSION; true;
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# Build Log
TODO
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