fcracker79 / k8s-experiment

Install

skaffold config set --global local-cluster true
minikube addons enable ingress

curl -sL run.linkerd.io/install | sh
or
curl --proto '=https' --tlsv1.2 -sSfL https://run.linkerd.io/install-edge | sh

linkerd check --pre                     # validate that Linkerd can be installed
linkerd install --crds | kubectl apply -f - # install the Linkerd CRDs
linkerd --set proxyInit.runAsRoot=true install | kubectl apply -f -    # install the control plane into the 'linkerd' namespace
linkerd check                           # validate everything worked!
kubectl create namespace k8s-experiment -o yaml | linkerd inject -|kubectl apply -f -
linkerd jaeger install | kubectl apply -f -
linkerd jaeger check

kubectl create namespace nats
kubectl create namespace prometheus
kubectl create namespace grafana

Deploy

1. Deploy the artifacts: make run
2. Expose the Prometheus server: kubectl expose service kube-prometheus-stack-prometheus --namespace prometheus --type=NodePort --target-port=9090 --name=prometheus-server-np
3. Get the minikube URL for the exposed server: minikube service prometheus-server-np --url --namespace prometheus
4. Expose the Grafana server: kubectl expose service grafana --type=NodePort --target-port=3000 --name=grafana-np --namespace grafana
5. Get the minikube URL for the exposed server: minikube service grafana-np --url --namespace grafana
6. Get the password to access grafana: kubectl get secret --namespace grafana grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo
7. Access grafana using the admin account and the password found at previous point
8. Expose the Grafana server: kubectl expose service grafana --type=NodePort --target-port=3000 --name=grafana-np --namespace grafana
9. Get the minikube URL for the exposed server: minikube service grafana-np --url --namespace grafana
10. Get the password to access grafana: kubectl get secret --namespace grafana grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo
11. Access grafana using the admin account and the password found at previous point
12. Install Prometheus datasource to Grafana, URL http://kube-prometheus-stack-prometheus.prometheus.svc.cluster.local:9090
13. Import dashboards

Test

curl -XPOST -d '{"id": "user1"}' -H 'Content-Type: application/json' -v http://minikube.ingress/users
curl -XPOST -d '{"id": "company1"}' -H 'Content-Type: application/json' -v http://minikube.ingress/companies

curl -H 'Content-Type: application/json' -v http://minikube.ingress/users/user1
curl -H 'Content-Type: application/json' -v http://minikube.ingress/companies/company1

For async:

1. On NATS box: nats -s nats.nats.svc.cluster.local:4222 subscribe 'k8s.experiment.users.>'
2. curl -XPOST -d '{"id": "user1"}' -H 'Content-Type: application/json' -v http://minikube.ingress/async/users

Notes

Jaeger dashboard shows linkerd-proxy as service name. This problem is addressed at linkerd/linkerd2#11157 and, at the time of writing, is still open.