OpenShift Service Mesh on OpenShift v4.0 Test Run

This is just quick notes on what I recently tried on OpenShift v4.0 from try.openshift.com. OpenShift uses Maistra for installing the OpenShift Service Mesh via a Kuberetes operator. OCP4 (Cluster version is 4.0.0-0.9) makes creating OpenShift Cluster so easy!

Here are the steps I used:

  1. Install OpenShift. Please follow the instruction on try.openshift.com
  2. Create an istio-operator project:
    • oc new-project istio-operator
    • oc process -f https://raw.githubusercontent.com/Maistra/openshift-ansible/maistra-0.9/istio/istio_community_operator_template.yaml | oc create -f -
  3. Create Custom Resource as the example below and save it as cr.yaml
    • apiVersion: "istio.openshift.com/v1alpha1"
      kind: "Installation"
      metadata:
        name: "istio-installation"
        namespace: istio-operator
      spec:
        istio:
          authentication: true
          prefix: docker.io/maistra
        jaeger:
          prefix: docker.io/jaegertracing
        kiali:
          username: admin
          password: admin
          prefix: docker.io/kiali
  4. Check if the operator is ready
    • oc logs <istio operator pod name> -n istio-operator
    • Output from logs:
      time="2019-04-05T06:52:41Z" level=info msg="Go Version: go1.11.5"
      time="2019-04-05T06:52:41Z" level=info msg="Go OS/Arch: linux/amd64"
      time="2019-04-05T06:52:41Z" level=info msg="operator-sdk Version: 0.0.5+git"
      time="2019-04-05T06:52:41Z" level=info msg="Metrics service istio-operator created"
      time="2019-04-05T06:52:41Z" level=info msg="Watching resource istio.openshift.com/v1alpha1, kind Installation, namespace istio-operator, resyncPeriod 0"
      time="2019-04-05T06:53:56Z" level=info msg="Installing istio for Installation istio-installation"
  5. Install OpenShift service mesh via operator using the cr.yaml that was created in step #3
    • oc create -f cr.yaml -n istio-operator
  6. Verify Service Mesh Installation
    • oc get pods -n istio-system
      NAME                                          READY     STATUS      RESTARTS   AGE
      elasticsearch-0                               1/1       Running     0          11h
      grafana-d5d978b4d-pj6wf                       1/1       Running     0          11h
      istio-citadel-6f7fdc6685-vbx6n                1/1       Running     0          11h
      istio-egressgateway-5458749989-5xswb          1/1       Running     0          11h
      istio-galley-58bd6d9546-6nlhv                 1/1       Running     0          11h
      istio-ingressgateway-77f9dc475b-6cx5x         1/1       Running     0          11h
      istio-pilot-6f5f59477c-7kzvr                  2/2       Running     0          11h
      istio-policy-6c574bccd8-55wwx                 2/2       Running     5          11h
      istio-sidecar-injector-7f866d4796-k6dqw       1/1       Running     0          11h
      istio-telemetry-54795dfc9c-d5cr4              2/2       Running     5          11h
      jaeger-agent-gsbk8                            1/1       Running     0          11h
      jaeger-agent-lqmx4                            1/1       Running     0          11h
      jaeger-agent-zsb9l                            1/1       Running     0          11h
      jaeger-collector-668488cff9-24p9b             1/1       Running     0          11h
      jaeger-query-57f78497d5-7ttbw                 1/1       Running     0          11h
      kiali-ddbf7d4d9-c54kf                         1/1       Running     0          11h
      openshift-ansible-istio-installer-job-vpdrl   0/1       Completed   0          11h
      prometheus-b5fb89775-x4bzd                    1/1       Running     0          11h
  7.  Install the bookinfo application. Here are the steps that I used.
  8.  Access the bookinfo application
    • To get the host for ingressgateway route:
      • oc get route -n istio-system istio-ingressgateway -o jsonpath='{.spec.host}'
        
        output:
        istio-ingressgateway-istio-system.apps.test3-0404.sc.ocpdemo.online
    •  Go to your browser and use your ingressgateway host as the URL similar to the one shown below.
      • http://istio-ingressgateway-istio-system.apps.test3-0404.sc.ocpdemo.online/productpage

 Observability

  • Kiali Console
    • oc get route -n istio-system|grep kiali
    • use the output of the host from kiali route to access the kiali console

Screen Shot 2019-04-05 at 12.15.57 PM.png

  • Jaegar:
    • jaeger-query-istio-system.apps.test3-0404.sc.ocpdemo.online

    • use the output of the host from jaegar route to access the jaegar

Screen Shot 2019-04-05 at 12.17.32 PM.png

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