Prerequisites for deploying and protecting services

This article provides the prerequisites for deploying and protecting services both with the HTTP and gRPC methods.

Install the Kubernetes cluster with Istio

Prerequisites

Kubernetes version 1.14 or subsequent.
Istio version 1.9 or subsequent.

Procedure

Note

As an alternative to this procedure, you can install Istio using the ACP on k8s repository which provides simple deployment commands you can use out of the box.

Set up a Kubernetes cluster locally using kind.

GO111MODULE="on" go get sigs.k8s.io/kind@v0.9.0 && kind create cluster

Install Istio.

curl -L https://istio.io/downloadIstio | sh -
cd istio-1.8.2
export PATH=$PWD/bin:$PATH
istioctl install --set profile=demo -y
kubectl label namespace default istio-injection=enabled

Result

Istio is installed, added to PATH, and Istio injection is enabled on the default namespace.
✔ Istio core installed
✔ Istiod installed
✔ Egress gateways installed
✔ Ingress gateways installed
✔ Installation complete

Define the authorizer

Edit the mesh config with the following command:
```
kubectl edit configmap istio -n istio-system
```

Define ACP authorizer using extension providers, for example:

data:
  mesh: |-
    extensionProviders:
    - name: "acp-authorizer"
      envoyExtAuthzGrpc:
        service: "istio-authorizer.acp-system.svc.cluster.local"
        port: "9001"

Restart Istio to apply the changes:

kubectl rollout restart deployment/istiod -n istio-system

Create the Istio gateway

In the workspace, select APIs from the sidebar.
Select the GATEWAYS tab.
Select ADD GATEWAY.
Select Istio, enter the name and the description for your gateway, and select NEXT.
In the Gateway Management view, go to the QUICK START tab and proceed as follows:
1. Select Download Package to download the zipped Istio Authorizer package. Unzip the package locally and enter the extracted folder.
  Note
  
  The package includes
  - manifest.yaml listing API details
  - kustomization.yaml defining resources and secret generator inputs.
  - parse-body.yaml that can be used to indicate that the request body is going to be parsed. You can use JSON validators to check the request body assertions.
2. To deploy Istio Authorizer, execute
```
kubectl apply -k .
```
  Result
  
  Istio Authorizer scans deployments in configured namespaces and funnels information about discovered APIs to ACP. Note that if you didn’t deploy any service yet, there’s nothing to discover. To quickly deploy a sample HTTP/gPRC service, follow:
  - Deploying and protecting HTTP services
  - Deploying and protecting gPRC services
3. Back in the ACP administrator portal (Gateway Management > QUICK START), select CONNECT API GROUPS to connect APIs and enable enforcement policies.
Result

The predefined set of API groups is imported and displayed in the APIs tab of the Gateway Management view. The API groups are ready to be connected to services (unless you selected the automatic binding option when creating the gateway in ACP).