MHRA Medicines microservice

Setup

To run the following steps, first you should:

Install Terraform - required to deploy, delete and check the status of current cloud infrastructure from resource files from the command line
Install Azure CLI - allows you to log in to your Azure account and retrieve details about deployed instances. Accessed using az
Authenticate with Azure
```
az login
```
If you have access to more than one subscription, you can set the current subscription by using the relevant SUBSCRIPTION_ID from the output of the above login command:
```
az account set --subscription="SUBSCRIPTION_ID"
```
Install kubectl - a command line tool for interacting with a kubernetes cluster via it's API

To connect to a cluster, you need to set the Kubernetes credentials file path as the KUBECONFIG environment variable.

Change to the relevant environment directory (e.g. infrastructure/environments/non-prod)
Source the environment variables
```
  set -a && source .env && set +a
```
Create the credentials file by running this script and selecting the kubernetes cluster that you want to point to (by environment)
```
../../scripts/update-kubernetes-config.sh
```

Now you can run kubectl commands against the selected cluster, e.g.

kubectl get nodes

Apply manifest to the cluster - to do this, clone the deployments repo, install the necessary prerequisites, go to cluster-init dir and run
```
make overlay=non-prod
```

Validate the Istio installation

kubectl get svc --namespace istio-system --output wide

Confirm that the required pods have been created
```
kubectl get pods --namespace istio-system
```
Note: you will need to install an SSL certificate and private key. There is a ./certs.sh for a self-sign, or you can obtain a valid cert from Let's Encrypt (e.g. using acme.sh). You may need to restart the ingress gateway pod to pick up the new certs.
```
kubectl create -n istio-system secret tls istio-ingressgateway-certs --key key.txt --cert crt.txt
```