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Using Jaeger on Kubernetes

This instructions would only setup jaeger, and use a jaeger agent as side card doesn't include Istio, if you want to use Jaeger with Istio see the guide istio.md

I strongly recommend installing kubectx and kubens from https://github.com/ahmetb/kubectx

Setup kubernetes on Docker for Mac or Minikube, pick one:

Setup Kubernetes on Docker for Mac

Using Docker for Mac (Edge) kubernetes v1.13

  1. Go to preferences, advance tab, and make sure you are using 4 CPU, 8 GB Mem
  2. Go to preferences, kubernetes tab enable kubernetes and wait to be ready
  3. Configure your kubectl to use the docker-desktop cluster context
    1. You can use kubectx docker-desktop

Check that kubectl is pointing to correct context

kubectl get nodes

NAME             STATUS   ROLES    AGE   VERSION
docker-desktop   Ready    master   73m   v1.13.0

Setup Kubernetes on Minikube

Install Minikube from here https://github.com/kubernetes/minikube/releases I used minikube v1.0.1 and VirtualBox Version 5.2.28 r130011 (Qt5.6.3)

curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.0.1/minikube-darwin-amd64 && chmod +x minikube && sudo cp minikube /usr/local/bin/ && rm minikube

TLDR;

minikube delete
minikube config set kubernetes-version v1.14.1
minikube config set cpus 4
minikube config set memory 8192
minikube config set WantUpdateNotification false
minikube start --extra-config=apiserver.enable-admission-plugins="LimitRanger,NamespaceExists,NamespaceLifecycle,ResourceQuota,ServiceAccount,DefaultStorageClass,MutatingAdmissionWebhook"
minikube ssh -- sudo ip link set docker0 promisc on

Check that kubectl is pointing to correct context

kubectl get nodes

NAME       STATUS   ROLES    AGE   VERSION
minikube   Ready    master   16m   v1.14.1

Deploy Jaeger on Kubernetes

Deploy using Jaeger Operator:

Follow the instructions here https://github.com/jaegertracing/jaeger-operator#installing-the-operator

TLDR;

kubectl create namespace observability # (1)
kubectl create -f https://raw.githubusercontent.com/jaegertracing/jaeger-operator/master/deploy/crds/jaegertracing_v1_jaeger_crd.yaml # (2)
kubectl create -f https://raw.githubusercontent.com/jaegertracing/jaeger-operator/master/deploy/service_account.yaml
kubectl create -f https://raw.githubusercontent.com/jaegertracing/jaeger-operator/master/deploy/role.yaml
kubectl create -f https://raw.githubusercontent.com/jaegertracing/jaeger-operator/master/deploy/role_binding.yaml
kubectl create -f https://raw.githubusercontent.com/jaegertracing/jaeger-operator/master/deploy/operator.yaml

Create Jeager Instance:

Follow instructions here https://github.com/jaegertracing/jaeger-operator#creating-a-new-jaeger-instance

TLDR;

kubectl apply -f kubernetes/jaeger/simplest.yaml

Expose the Jaeger frontend UI on localhost

kubectl port-forward svc/simplest-query 16686:16686

Deploy Node.js Application on Kubernetes

Tag and Push the docker container for the node.js app using a registry namespace/user

docker tag app-rates -t ${DOCKER_USERNAME}/app-rates
docker push ${DOCKER_USERNAME}/app-rates

Edit the file kubernetes/jaeger/my-app.yaml with your image name Deploy using kubectl

kubectl apply -f kubernetes/jaeger/my-app.yaml

Expose the Node.js App on localhost

kubectl port-forward deployment/myapp-deployment 8080:8080