Azure Kubernetes Service

This page describes how to install and configure Styra DAS On-premises on Azure Kubernetes Service (AKS).

Prerequisites

The following shows the list of software requirements to install and configure Styra DAS On-premises on AKS:

Ensure you have a Kubernetes cluster with version 1.11 or later, with a minimum of six vCPUs and 32GB of memory. In this case, you can assume AKS provides specific instructions for loading the container images and setting up an external IP. For instructions on how to set up Azure Container Registry (ACR) and AKS, see Azure's AKS tutorial.
Install the Azure and kubectl clients.
- Install the Azure CLI.
- Install and set up kubectl.
Configure SMTP (Simple Mail Transfer Protocol): An SMTP server allows Styra to send emails. For example, Styra can send an email for user activation, and to assist the user for password recovery. During installation, the SMTP information must be specified as listed in the Install and Configure Styra DAS On-Premises on AKS section.
- You need an SMTP host, SMTP port, SMTP username and password, and SMTP “From” email address.
- For Gmail, you can create a username or password for your account by clicking App Passwords from Google's security page.

Install and Configure Styra DAS On-Premises on AKS

To ensure kubectl is pointing to the correct cluster, run:
```
kubectl config get-contexts
```
Download the Styra DAS On-premises YAML configuration files from the Overview page.
If you are using the images directly from registry.styra.com then configure the cluster nodes to use a private registry with the following command. In this case, skip step #4 and step #5.
```
export REPOSITORY_URL="registry.styra.com"
```
For more information, see the Overview page.
info
It is assumed that either the cluster nodes are configured to use a private registry (to use images directly from registry.styra.com) OR Docker images are already downloaded from the Overview page and are available in the Cloud Registries (GCP or Azure or AWS).
Setup the Project ID or authentication details.

To set the REPOSITORY_URL environment variable, run:

export LOGIN_SERVER=<registry-name>.azurecr.io && export REPOSITORY_URL=$LOGIN_SERVER

tip

The server name ends with .azurecr.io. Now, set it to environment variable for the following commands to use:

az acr list --resource-group <RESOURCE GROUP> --query "[].{acrLoginServer:loginServer}" --output table
LOGIN_SERVER=”<YOUR LOGIN SERVER>”

Complete the following installation steps with either helm(recommended) or kubectl.

Using `kubectl`

Use the following instructions to install Styra DAS with kubectl and configure the Kubernetes resources:

Modify the YAML files to use the Azure AKS container registry.

TMP_FILE=mktemp /tmp/on-premises.yaml.XXXXXXXXXX; sed -e "s/REPOSITORY_URL/$LOGIN_SERVER/" on-premises.yaml > $TMP_FILE; mv $TMP_FILE on-premises.yaml`.

(Optional) Modify Elasticsearch and Postgres YAML files to use Azure AKS container registry.

TMP_FILE=`mktemp /tmp/postgres-deployment.yaml.XXXXXXXXXX`; sed -e ""s/REPOSITORY_URL/$LOGIN_SERVER/"" postgres/postgres-deployment.yaml > $TMP_FILE; mv $TMP_FILE postgres/postgres-deployment.yaml; \
TMP_FILE=`mktemp /tmp/es-client.yaml.yaml.XXXXXXXXXX`; sed -e ""s/REPOSITORY_URL/$LOGIN_SERVER/"" elastic/es-client.yaml > $TMP_FILE; mv $TMP_FILE elastic/es-client.yaml; \
TMP_FILE=`mktemp /tmp/es-data-stateful.yaml.XXXXXXXXXX`; sed -e ""s/REPOSITORY_URL/$LOGIN_SERVER/"" elastic/es-data-stateful.yaml > $TMP_FILE; mv $TMP_FILE elastic/es-data-stateful.yaml; \
TMP_FILE=`mktemp /tmp/es-master.yaml.XXXXXXXXXX`; sed -e ""s/REPOSITORY_URL/$LOGIN_SERVER/"" elastic/es-master.yaml > $TMP_FILE; mv $TMP_FILE elastic/es-master.yaml

Create LoadBalancer IP address.

Create an AKS IP address and configure the Styra public-gateway to use that address.

Determine the node resource group:

az aks show --resource-group <RESOURCE GROUP> --name <AKS CLUSTER NAME> --query nodeResourceGroup -o tsv

Create a new static IP address:

az network public-ip create --resource-group <NODE RESOURCE GROUP> --name AKSPublicIP --allocation-method static

Configure the LoadBalancer IP or NodePort in the DAS gateway-public service spec by updating one of the following files:
- (Optional) Add spec.loadBalancerIP in standard-external-http/load-balancer-svc.yaml.
  OR
- (Optional) Add spec.ports.nodePort in standard-external-http/node-port-svc.yaml.
Configure settings by modifying settings.yaml.
- ingress_url: http://<YOUR LoadBalancer IP ADDRESS>
- from_email_address: "YOUR EMAIL ADDRESS"
- smtp_address: "smtp.gmail.com:PORT NUMBER" [25 or 465 or 587]
Configure credentials by modifying credentials.yaml.
- smtp_username: "YOUR SMTP USERNAME"
- smtp_password: "YOUR SMTP PASSWORD"

(Optional) When the SMTP server is not configured, then a root user must be added, so that you can login after installation to add or update other users.

Set the root user and password in environment variables.

export ROOT_USER=<root user email> && export ROOT_USER_PWD=<root user password>

Update the settings.yaml with the root user and password.

TMP_FILE=`mktemp /tmp/settings.yaml.XXXXXXXXXX`; sed "s/.*config.json.*/  config.json: '{\"tenants\": {\"default\": {\"root_users\": {\"$ROOT_USER\": {\"encrypted_password\": \"\", \"password\": \"$ROOT_USER_PWD\"}}}}}'/" settings.yaml > $TMP_FILE; mv $TMP_FILE settings.yaml

(Optional) Configure TLS:
- Update gateway-tls/deployment.yaml.
```
TMP_FILE=`mktemp /tmp/gateway-tls-deploy.yaml.XXXXXXXXXX`; sed -e "s/REPOSITORY_URL/gcr.io\/$PROJECT/" gateway-tls/deployment.yaml > $TMP_FILE; mv $TMP_FILE gateway-tls/deployment.yaml
```
- Update credentials.yaml and settings.yaml by mounting the gateway_tls_private_key.pem and gateway_tls_cert.pem.
```
data:
  gateway_tls_cert.pem: |
    <TLS_CERT_CONTENT>
```
- Similarly, update the secret (credentials.yaml) with gateway_tls_private_key.pem content.
```
data:
  gateway_tls_private_key.pem: |
    <TLS_KEY_CONTENT>
```
- Update gateway-tls/gateway-public-tls-service.yaml:
  - Add spec.type: LoadBalancer
  - (Optional) Add spec.loadBalancerIP: <LoadBalancerIP>
    OR
  - Add spec.type: NodePort
  - (Optional) Add spec.ports.nodePort: <NodePort>
- Install Gateway TLS YAML manifest files with:
```
kubectl apply -f gateway-tls/
```
Install the Elasticsearch and Postgres YAML files (if using the bundled Elasticsearch and Postgres).
```
for f in elastic/*.yaml postgres/*.yaml; do kubectl apply -f $f; done
```

a. Install the Styra DAS YAML files.

for f in *.yaml; do kubectl apply -f $f; done

b. Expose Styra DAS:

Using LoadBalancer service type:

kubectl apply -f standard-external-http/load-balancer-svc.yaml

Using NodePort service type:

kubectl apply -f standard-external-http/node-port-svc.yaml

Wait until the status on all of the pods is running. To check the status of the pods, run the kubectl get pods command.
Point your browser to http://<YOUR LoadBalancer IP ADDRESS>.
Reset the password for your email address (from_email_address:) by using the Forgot Password flow.

tip

The UI can be accessed without a public IP by port-forwarding the port 8080 to the Gateway pod. You can use the kubectl port-forward <YOUR-GATEWAY-POD> 8080:8080 command to access the UI from localhost.

Using Helm

note

The supported Helm versions are Helm v2.16.1 and Helm v3.

Use the following instructions to install Styra DAS with helm and configure the Kubernetes resources:

Navigate to the charts directory:
```
cd charts
```
Edit values.yaml by using your code editor of choice. The Helm chart provides Helm values and its description.
Update the following values.
- email.from_address: "Your-Email"
- global.repo: $REPOSITORY_URL
- service.loadbalancerip: "LoadBalancerIP"
- smtp.username: "username"
- smtp.password: "password"
- ingress.url: http://<YOUR LoadBalancer IP ADDRESS>
(Optional) Update the following values.
- (Optional) If you want to use managed services of Postgres and Elasticsearch update the values as per the instructions in the values.yaml.
- (Optional) Similarly, you can configure s3_decision_streaming, root_user credentials, oidc configuration as per the instructions present under respective sections.
(Optional) Configure TLS to enable secure HTTPS communication between the cluster ingress and the Styra gateway-secure service.
- Change the value of global.tls.enable to true in values.yaml.
- Create the tls directory under styra-das/ with:
```
mkdir -p styra-das/tls
```
- Copy your TLS key and certificate files (with the names gateway_tls_private_key.pem and gateway_tls_cert.pem, respectively) into the tls/ directory by using the following commands.
```
cp <path-to-ssl-cert> styra-das/tls/gateway_tls_cert.pem
cp <path-to-ssl-key> styra-das/tls/gateway_tls_private_key.pem
```
(Optional) Configure TLS to enable secure HTTPS communication between the Elasticsearch service and the Styra DAS ES clients (agentloader and analysis-api services).
- Change the value of elasticsearch.load_custom_ca to true in values.yaml.
- Create the tls-ca directory under styra-das/ with:
```
mkdir -p styra-das/tls-ca
```
- Copy your custom Certificate Authority (CA) file under the newly created tls-ca directory and rename as ca-cert-es.pem with the following command:
```
cp <path-to-tls-ca-file> styra-das/tls-ca/ca-cert-es.pem
```
Install the charts directory with:
```
helm install styra-das styra-das/
```
tip
Storing the hardcoded secrets in values.yaml can be avoided by passing the values as arguments while installing the Helm chart. For example, the email and password values for the root_user can be set dynamically by using environment variables:
export PASSWORD="top-secret" helm install styra-das styra-das/ --set root_user.email=admin@example.com --set root_user.password=$PASSWORD
Wait until the status on all of the pods is running. To check the status of the pods, run the kubectl get pods command.
Point your browser to http://<YOUR LoadBalancer IP ADDRESS>.
Reset the password for your email address (from_email_address:) by using the Forgot Password flow.

Reference

Helm Values

The following shows the description of various values that can be configured with values.yaml in the Helm chart for Styra DAS.

# smtp: Configures the SMTP server settings. If SMTP is not used, then
# you must leave "serveraddress" blank ("")

smtp:
  serveraddress: smtp.gmail.com:587
  username: ""
  password: ""

# email.from_address: The user for SMTP server and also the default
# admin user created on installation.
#
# If you have SMTP configured, then you can use the "Forgot Password"
# flow to reset the password and login.
# If SMTP is not configured, then you must set the "root_user" with a
# valid login created during installation.
email:
  from_address: support@styra.com

# cluster: For future use. Leave this as "gke" for now.
cluster: gke
# gke.loadbalancerip: Defines the public IP that is used to configure
# Styra public gateway.
gke:
  loadbalancerip: <YOUR GKE IP ADDRESS>
# ingress.url: URL for the ingress.
ingress:
  url: http://styra.customer.com

postgres:
  # postgres.enabled: Set to false, if managed RDS is used.
  enabled: true
  db_url: "postgres://postgres/postgresdb?sslmode=disable"
  db_username: "postgresadmin"
  db_password: "admin123"

elasticsearch:
  # elasticsearch.enabled: Set to false, if managed Elasticsearch
  # is used.
  enabled: true
  # elasticsearch.url: Set the elasticsearch URL if you are using
  # managed ES; otherwise, leave it unchanged.
  # only effective if "enabled: false".
  url: ""
  # elasticsearch.username and password enables authentication.
  # enabled flag doesn't affect either of them.
  username: ""
  password: ""

aws:
  access_key_id: ""
  secret_access_key: ""
  region: ""

# s3_decision_streaming: decisions S3 settings for streaming decisions.
s3_decision_streaming:
  s3_url: ""
  s3_region: ""
  s3_access_key: ""
  s3_secret_access_key_id: ""

# root_user: Defines a root user which will be created by default as
# admin. Must be set if SMTP is not configured.
# If SMTP is configured, this can be left blank.
root_user:
  #root_user.email: Email address of the root user.
  email: ""
  password: ""

# oidc fields configure the OIDC provider provisioned and enabled.
# oidc.issuer_url is the OIDC issuer URL provided by the provider. For
# example, "https://oidc.customer.com".
# oidc.client_id and client_secret are the credentials provided by the
# provider.
# oidc.allowed_domain is the domain for allowed user accounts, e.g.,
# "customer.com".
# oidc.scopes is the OIDC scopes requested from the provider. The
# value is an array of strings. If an empty array is provided, then the
# default ["openid", "profile", "email"] is used.
oidc:
  id: "OIDC"
  issuer_url: ""
  client_id: ""
  client_secret: ""
  allowed_domain: ""
  scopes: []

# global.repo: Docker image repository URL
global:
  repo: REPOSITORY_URL
# TLS configurations to enable secure HTTPS communication between the cluster
# ingress and the Styra `gateway-secure` service.
#    mark "enable: true", and
#    Create the `tls` directory under `charts/styra-das/` using the following command.
#      mkdir -p charts/styra-das/tls
#    Copy your tls key and certificate files into the `tls/` directory.
#      cp <path-to-ssl-cert> tls/tls_cert.pem
#      cp <path-to-ssl-key> tls/tls_private_key.pem
  tls:
    enable: false

Azure Kubernetes Service

Prerequisites​

Install and Configure Styra DAS On-Premises on AKS​

info

tip

Using kubectl​

tip

Using Helm​