hello-go

Simple app for demos

The app itself

cd src
go run hello-server.go world

Dockerfile

cd ..
bat Dockerfiles/*
docker build -t hello -f Dockerfiles/Dockerfile-6 src
docker run hello

kbld

bat kbld/deployment.yml
bat kbld/config.yml
kbld -f kbld/ | kubectl apply -f -

pack

cd src
pack set-default-builder gcr.io/paketo-buildpacks/builder:base-platform-api-0.3
pack build hello-go # --no-pull
docker images | grep hello-go
pack inspect-image hello-go
pack inspect-image hello-go --bom | jq
pack inspect-builder

Rebasing

docker pull gcr.io/paketo-buildpacks/run:0.0.97-base-cnb
docker tag gcr.io/paketo-buildpacks/run:0.0.97-base-cnb paketobuildpacks/run:base-cnb
docker images | grep run
docker images | grep hello-go
pack rebase hello-go --no-pull
catd <(docker inspect <oldsha>) <(docker inspect hello-go) | tail -n20

Publishing

docker tag hello-go andreasevers/hello-go:pack-1.0.0
pack build andreasevers/hello-go:pack-1.0.0 --publish

envsubst

cd ../envsubst
catd deployment-dev.yml deployment-prod.yml
bat deployment.yml
NAMESPACE=dev
envsubst < deployment.yml | kubectl apply -f -

kustomize

cd ../kustomize
cd ops/base
bat deployment.yaml

cd ../overlays/dev
bat kustomization.yaml
kustomize build --load_restrictor none .
kustomize build --load_restrictor none . | kubectl apply -f -
k get all -n dev

cd ../prod
bat *
kustomize build --load_restrictor none . | kubectl apply -f -
kns prod
k get all

ytt

Overlays

cd ../../../ytt/overlays
bat *
ytt -f deployment.yml -f dev.yml | kubectl apply -f-
ytt -f deployment.yml -f prod.yml

Pythonic

cd ../pythonic
bat *
ytt -f base/ -f envs/dev.yml | kubectl apply -f-
ytt -f base/ -f envs/prod.yml

Helm

cd ../../helm
tree .
bat all-the-things
kns dev
helm upgrade --install hello-go -f values.yml -f values-dev.yml .
k get pods