hello-universe-go-app

hello-universe-go-app, a simple "Hello-Universe" service written in Go, with built-in Newrelic instrumentation.

---

Run server

go build -o server && ./server

# If you are really conscious about the size. You can run this instead:
go build -ldflags="-s -w" -a -o server && ./server

---

Install as Helm chart

kubectl create ns hello-universe

cd charts/hello-universe

helm template -v 5 \
    --create-namespace \
    --namespace hello-universe \
    --logtostderr \
    --debug \
    --values values-default.yaml \
    hello-universe \
    .

helm upgrade -v 3 \
    --create-namespace \
    --namespace hello-universe \
    --logtostderr \
    --debug \
    --install \
    --atomic \
    --timeout 60s \
    --debug \
    --cleanup-on-fail \
    --values values-default.yaml \
    hello-universe \
    .

---

Want to see Newrelic Instrumentation ?

Supply the below environment variables with valid values and start the service. Thats all.

• NEW_RELIC_APP_NAME
• NEW_RELIC_LICENSE_KEY

For example:

export NEW_RELIC_APP_NAME=hello-universe
export NEW_RELIC_LICENSE_KEY="YOUR VALID NEWRELIC INGEST LICENSE KEY"
go build -o server && ./server

Headover to Newrelic and find the application in "APM" screen.

---

Create a Git Tag

Whenever a new release/tag has to be created, just update version.go and push it to main branch. A github workflow is already configured that creates the actual (git) tag, which will be available in https://github.com/none-da/hello-universe-go-app/tags page.

For now Github release creation is still manual.

---

Create a Docker Image

Whenever a new tag is created (using the above mentioned steps), a github workflow automatically kicks-in, builds the docker images and pushes to Dockerhub.