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Kubernetes (K8s)

This tutorial demonstrates how to deploy the Open AMT Cloud Toolkit on a local Kubernetes single-node cluster. Alternatively, you can also deploy using a managed service through a Cloud Service Provider such as Azure Kubernetes Service (AKS). See AKS.

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications. Learn more about Kubernetes here.

Prerequisites

  • Docker Desktop with Kubernetes Enabled

    Important - For Linux

    If deploying on a Linux machine, Docker Desktop is not available. You must use Docker Engine alongside a local Kubernetes cluster tool such as minikube or kubeadm.

  • kubectl

  • Helm CLI (v3.5+)

  • PostgreSQL Docker Container or Local PostgreSQL server

    Note - Database Required

    This guide requires a standalone database for storage. This can be done either as a Docker container or as a local Postgres server on your local IP. For production, a managed database instance, either by a cloud service provider or your enterprise IT, is highly recommended.

    Optional - How to Set up local PostgreSQL DB using Docker

    Build and Start

    1. Clone the Open AMT Cloud Toolkit.

      git clone https://github.com/open-amt-cloud-toolkit/open-amt-cloud-toolkit --branch v2.3.4

    2. Copy the .env.template file to .env.

      copy .env.template .env

      cp .env.template .env

    3. Set the POSTGRES_USER and POSTGRES_PASSWORD to the credentials you want.

    4. Build and start the container.

      docker-compose  -f "docker-compose.yml" up -d db

    5. Continue from Create Kubernetes Secrets.

    Optional (Not Recommended) - How to Set up Local PostgreSQL server on local IP Address

    Download and Configure

    1. Download and Install PostgreSQL. You may have to add .\bin and .\lib to your PATH on Windows.

    2. Open the pg_hba.conf file under .\PostgreSQL\14\data.

    3. Add your device's IP Address under IPv4 local connections.

      Example - pg_hba.conf File 
      # TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                             scram-sha-256
# IPv4 local connections:
host    all             all             127.0.0.1/32                    scram-sha-256
host    all             all             <Your-IP-Address>/24            scram-sha-256
# IPv6 local connections:
host    all             all             ::1/128                         scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                             scram-sha-256
host    replication     all             127.0.0.1/32                    scram-sha-256
host    replication     all             ::1/128                         scram-sha-256

    4. Reload the configuration file to use the updated values.

      psql -U <user> -p 5432 -c "SELECT pg_reload_conf();"

    5. From here, use your IP Address as the <SERVERURL>. DO NOT use localhost or 127.0.0.1.

Get the Toolkit

  1. Clone the Open AMT Cloud Toolkit.

    git clone https://github.com/open-amt-cloud-toolkit/open-amt-cloud-toolkit --branch v2.3.4

Create Kubernetes Secrets

1. MPS/KONG JWT

This is the secret used for generating and verifying JWTs.

kubectl create secret generic open-amt-admin-jwt --from-literal=kongCredType=jwt --from-literal=key="admin-issuer" --from-literal=algorithm=HS256 --from-literal=secret="<your-secret>"

Where:

  • <your-secret> is your chosen strong secret.

2. KONG ACL for JWT

This configures KONG with an Access Control List (ACL) to allow an admin user open-amt-admin to access endpoints using the JWT retrieved when logging in.

kubectl create secret generic open-amt-admin-acl --from-literal=kongCredType=acl --from-literal=group=open-amt-admin

3. MPS Web Username and Password

This is the username and password that is used for requesting a JWT. These credentials are also used for logging into the Sample Web UI.

kubectl create secret generic mpsweb --from-literal=user=<your-username> --from-literal=password=<your-password>

Where:

  • <your-username> is a username of your choice.

  • <your-password> is a strong password of your choice.

    Important - Using Strong Passwords

    The password must meet standard, strong password requirements:

    • 8 to 32 characters
    • One uppercase, one lowercase, one numerical digit, one special character

4. Database connection strings

  1. Configure the database connection strings used by MPS, RPS, and MPS Router.

    Where:

    • <USERNAME> is the username for the Postgres database.
    • <PASSWORD> is the password for the Postgres database.
    • <SERVERURL> is the loction for the Postgres database.

    Warning - Using an SSL Connection

    This tutorial uses the connection string setting of 'no-verify' for ease of setup. For production, it is recommended to use a SSL connection.

  2. Create RPS connection string secret.

    kubectl create secret generic rps --from-literal=connectionString=postgresql://<USERNAME>:<PASSWORD>@<SERVERURL>:5432/rpsdb?sslmode=no-verify

  3. Create MPS Router connection string secret.

    kubectl create secret generic mpsrouter --from-literal=connectionString=postgresql://<USERNAME>:<PASSWORD>@<SERVERURL>:5432/mpsdb?sslmode=disable

  4. Create MPS connection string secret. 

    kubectl create secret generic mps --from-literal=connectionString=postgresql://<USERNAME>:<PASSWORD>@<SERVERURL>:5432/mpsdb?sslmode=no-verify

Update Configuration

Edit values.yaml

  1. Open the values.yaml file in ./open-amt-cloud-toolkit/kubernetes/charts/.

  2. Update the commonName key in the mps section with the IP Address of your development device.

    mps:
    commonName: "<your-ip-address>"
    replicaCount: 1
    logLevel: "silly"
    jwtExpiration: 1440

  3. Save and close the file.

Create Databases and Schema

  1. Use the database schema files to initialize the hosted Postgres DB in the following steps.

    Where:

    • <SERVERURL> is the location of the Postgres database.
    • <USERNAME> is the username for the Postgres database.

  2. Create the RPS database.

    psql -h <SERVERURL> -p 5432 -d postgres -U <USERNAME> -W -c "CREATE DATABASE rpsdb"

  3. Create tables for the new 'rpsdb'.

    psql -h <SERVERURL> -p 5432 -d rpsdb -U <USERNAME> -W -f ./data/init.sql

  4. Create the MPS database.

    psql -h <SERVERURL> -p 5432 -d postgres -U <USERNAME> -W -f ./data/initMPS.sql

Deploy Open AMT Cloud Toolkit Using Helm

  1. Deploy using Helm. 

    helm install openamtstack ./kubernetes/charts

    Success

    NAME: openamtstack
LAST DEPLOYED: Wed Jul 14 12:59:29 2021
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None

  2. View the pods. You might notice openamtstack-vault-0 is not ready. This will change after we initialize and unseal Vault. MPS and RPS will both have a status of CreateContainerConfigError until Vault is Ready. 

    kubectl get pods

    Success

    NAME                                                 READY   STATUS                       RESTARTS   AGE
mps-6984b7c69d-8d5gf                                 0/1     CreateContainerConfigError   0          5m
mpsrouter-9b9bc499b-pwn9j                            1/1     Running                      0          5m
openamtstack-kong-55b65d558c-gzv4d                   2/2     Running                      0          5m
openamtstack-vault-0                                 0/1     Running                      0          5m
openamtstack-vault-agent-injector-7fb7dcfcbd-dlqqg   1/1     Running                      0          5m
rps-79877bf5c5-hnv8t                                 0/1     CreateContainerConfigError   0          5m
webui-784cd49976-bj7z5                               1/1     Running                      0          5m

Initialize and Unseal Vault

Danger - Download and Save Vault Keys

Make sure to download your Vault credentials and save them in a secure location when unsealing Vault. If the keys are lost, a new Vault will need to be started and any stored data will be lost.

  1. Connect to the Vault UI using a web browser.

    http://localhost:8200

    Troubleshoot - Vault UI External IP

    If you cannot connect, verify the External IP Address by running: 

    kubectl get services openamtstack-vault-ui

  2. Please refer to HashiCorp documentation on how to Initialize and unseal Vault. Stop and return here after signing in to Vault with the root_token.

  3. After initializing and unsealing the vault, you need to enable the Key Value engine.

  4. Click Enable New Engine +.

  5. Choose KV.

  6. Click Next.

  7. Click Enable Engine.

Vault Token Secret

  1. Add the root token as a secret to the k8s cluster so that the services can access Vault.

    kubectl create secret generic vault --from-literal=vaultKey=<your-root-token>

    Where:

    • <your-root-token> is your root_token generated by Vault.

  2. View the pods. All pods should now be Ready and Running. 

    kubectl get pods

    Success

    NAME                                                 READY   STATUS    RESTARTS   AGE
mps-6984b7c69d-8d5gf                                 1/1     Running   0          7m
mpsrouter-9b9bc499b-pwn9j                            1/1     Running   0          7m
openamtstack-kong-55b65d558c-gzv4d                   2/2     Running   0          7m
openamtstack-vault-0                                 1/1     Running   0          7m
openamtstack-vault-agent-injector-7fb7dcfcbd-dlqqg   1/1     Running   0          7m
rps-79877bf5c5-hnv8t                                 1/1     Running   0          7m
webui-784cd49976-bj7z5                               1/1     Running   0          7m

Next Steps

Continue from the Get Started steps

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