Table of Contents

1. Challenge

   Install Istio in Kubernetes and Deploy the bookinfo Application

   Get the Istio installation package and unpack it:

   [cloud_user@km]$ wget https://github.com/istio/istio/releases/download/1.0.6/istio-1.0.6-linux.tar.gz
   [cloud_user@km]$ tar -xvf istio-1.0.6-linux.tar.gz
   

   Add istioctl to our path:

   [cloud_user@km]$ export PATH=$PWD/istio-1.0.6/bin:$PATH
   

   Set Istio to NodePort type, and set the nodePort to port 30080:

   [cloud_user@km]$ sed -i 's/LoadBalancer/NodePort/;s/31380/30080/' ./istio-1.0.6/install/kubernetes/istio-demo.yaml
   

   Bring up the Istio control plane:

   [cloud_user@km]$ kubectl apply -f ./istio-1.0.6/install/kubernetes/istio-demo.yaml
   

   Verify that the control plane is running, but note that it may take a minute or two:

   [cloud_user@km]$ kubectl -n istio-system get pods
   

   Install the bookinfo application with manual sidecar injection:

   kubectl apply -f <(istioctl kube-inject -f istio-1.0.6/samples/bookinfo/platform/kube/bookinfo.yaml)
   

   Verify that the application is running and that there are 2 containers per pod. This may take another minute or so:

   [cloud_user@km]$ kubectl get pods
   

   Create an ingress and virtual service for the application:

   [cloud_user@km]$ kubectl apply -f istio-1.0.6/samples/bookinfo/networking/bookinfo-gateway.yaml
   

   Now, in a web browser, let's verify the page loads at the URL http://<kn1_PUBLIC_IP ADDRESS>:30080/productpage.

2. Challenge

   Configure the Forwarder, Install Nginx, and Access the Grafana Dashboard

   Configure Grafana to forward to localhost:

   [cloud_user@km]$ kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l app=grafana -o jsonpath='{.items[0].metadata.name}') 3000:3000 &
   

   Install and configure Nginx to proxy to the Grafana port:

   [cloud_user@km]$ sudo apt install -y nginx
   

   Change the Nginx config by editing /etc/nginx/sites-enabled/default with whichever text editor you like (but remember privileges, and run something like sudo vi...). Comment out all existing lines in the location / directive, and add proxy_pass http://127.0.0.1:3000. The results should look like this:

   location / {
       # First attempt to serve request as file, then
       # as directory, then fall back to displaying a 404.
       #try_files $uri $uri/ =404;
       proxy_pass http://127.0.0.1:3000;
   }
   

   Then restart Nginx:

   [cloud_user@km]$ sudo systemctl restart nginx
   

   Load Grafana at http://<km_PUBLIC_IP ADDRESS/dashboard/db/istio-mesh-dashboard and review the installed Istio dashboards.

   If the mesh traffic dashboard does not populate when the application is refreshed, then rerun this command to re-apply the mixer configuration:

   [cloud_user@km]$ kubectl apply -f ./istio-1.0.6/install/kubernetes/istio-demo.yaml