Setting up service graph

Software requirements

You can configure the Kubernetes cluster with various deployment topologies and the following table provides the topologies that are supported in service graph:

To complete setting up service graph in NetScaler ADM, click the topology type that you have configured for your Kubernetes cluster and complete the mentioned procedures:

• Single-tier or Unified ingress topology

• Dual-tier or Service Mesh Lite topology

• Service mesh topology

Note

The procedure to set up service graph for dual-tier and service mesh lite topologies remains the same.

Before you begin

You can view service graph using the following scenarios:

• NetScaler ADM and Kubernetes cluster on the same network (for example, NetScaler ADM and Kubernetes cluster hosted on the same Citrix Hypervisor).

• NetScaler ADM and Kubernetes cluster on a different network. In this scenario, you must configure an on-prem agent and register the agent on the network, where Kubernetes cluster is hosted.

Single tier or Unified ingress topology

Ensure that you have:

• Configured Kubernetes cluster with single tier or unified ingress topology.

• Added VPX, MPX, SDX, BLX instance in NetScaler ADM and enabled Web Insight.

• Added Kubernetes cluster in NetScaler ADM.

Dual tier or Service Mesh Lite topology

Ensure that you have:

• Configured Kubernetes cluster with any one of the supported topologies.

• Configured static routes on NetScaler ADM to enable communication between NetScaler ADM and NetScaler CPX.

  Note

  You can ignore this procedure if you have deployed NetScaler ADM as a microservice in the same cluster.

• Downloaded the sample deployment files from GitHub repository.

• Added required parameters in CPX YAML file to ensure successful CPX registration with NetScaler ADM.

• Added a VPX, MPX, SDX, or BLX instance in NetScaler ADM.

• Added the Kubernetes cluster in NetScaler ADM.

• Deployed a sample microservice application.

• Deployed NetScaler CPX and registered CPX to ADM (applicable only for two-tier architecture)

• Enabled Auto-select Virtual Servers to license the virtual servers.

• Enabled Web transaction and TCP transaction settings to All for NetScaler agent to get HTTP and TCP transactions.

• Sent traffic to microservices.

Service mesh topology

Ensure that you have:

• Configured Kubernetes cluster version 1.14.0 with any one of the following service mesh topologies:

  • NetScaler CPX as a sidecar proxy for Istio

  • NetScaler as an Ingress Gateway for Istio

  For more information, see NetScaler Istio Adapter deployment architecture

• Enabled admissionregistration.k8s.io/v1beta1 API. You can verify the API by using:

  kubectl api-versions | grep admissionregistration.k8s.io/v1beta1

  The following output indicates that the API is enabled:

  admissionregistration.k8s.io/v1beta1

• Installed Istio istio v.1.3.0.

• Installed Helm version 3.x.

• Configured static routes on NetScaler ADM to enable communication between NetScaler ADM and NetScaler CPX.

  Note

  You can ignore this procedure if you have deployed NetScaler agent as a microservice in the same cluster.

• Configured the required parameters to populate the service mesh topology data.

• Deployed a sample application.

• Added the Kubernetes cluster in NetScaler ADM.

• Enabled Auto-select Virtual Servers to license the virtual servers.

  Note

  When CPX is deployed as a sidecar proxy in service mesh deployment, the virtual servers are licensed only if the IP address is matching with the CPX NS IP.

• Enabled Web transaction and TCP transaction settings to All for NetScaler agent to get HTTP and TCP transactions.

• Sent traffic to microservices.