Juju is an open-source application orchestration engine that simplifies the deployment, integration, and management of applications across various infrastructures—be it Kubernetes or other environments. Think of Juju as a skilled conductor of an orchestra, where each component (or charm) plays a specific note to create harmonious operations at any scale.

Getting Started with Juju

In this guide, we will walk you through the process of deploying and managing charms with Juju in a straightforward way. Let’s dive in!

Step 1: Setting Up Your Environment

Before you can start conducting your orchestra, you need to set the stage. Here’s what you need:

• Choose a cloud provider and install Juju.
• The quickest way is to use a Multipass VM launched with the charm-dev blueprint.

To get started:

• Install Multipass on your system:
  • Linux
  • macOS
  • Windows
• On Linux, use the command:

  sudo snap install multipass

• Launch an Ubuntu VM with the charm-dev blueprint:

  multipass launch --cpus 4 --memory 8G --disk 30G --name tutorial-vm charm-dev

• Access the VM’s shell:

  multipass shell tutorial-vm

Now, verify that you have Juju and two localhost clouds:

juju clouds

Step 2: Bootstrapping Juju

It’s time to bootstrap your Juju controller into the MicroK8s cloud:

juju bootstrap microk8s tutorial-controller

Add a workspace or model for your deployment:

juju add-model tutorial-model

Step 3: Deploying Applications

Now that your environment is set, let’s deploy a few applications:

• To deploy Mattermost:

  juju deploy mattermost-k8s

• To deploy PostgreSQL:

  juju deploy postgresql-k8s --channel 14stable --trust

Enable security for your PostgreSQL deployment:

• Deploy TLS certificates operator:

  juju deploy tls-certificates-operator

• Configure it:

  juju config tls-certificates-operator generate-self-signed-certificates=true ca-common-name=Test CA

• Integrate PostgreSQL with TLS:

  juju integrate postgresql-k8s tls-certificates-operator

Link Mattermost with PostgreSQL:

juju integrate mattermost-k8s postgresql-k8s:db

Step 4: Monitoring Your Deployment

Watch your deployment come to life:

juju status --watch 1s

(Press Ctrl-C to quit. Drop the –watch 1s flag for static status.)

Step 5: Testing and Cleanup

Once everything shows active or idle status, test your deployment:

curl IP_address:port/apiv4/system/ping

You should see an output indicating the status is okay. For cleanup, delete your Multipass VM:

multipass delete --purge tutorial-vm

Finally, uninstall Multipass:

• Linux
• macOS
• Windows

Troubleshooting

If you face any challenges during the setup or deployment process, consider these troubleshooting tips:

• Ensure that you have a stable internet connection while downloading packages.
• Confirm that you are using compatible versions of Juju and Multipass.
• Look for any errors in the command prompts to get clues about what might be going wrong.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Conclusion

Congratulations! You now have a Kubernetes deployment consisting of a Mattermost backed by PostgreSQL with TLS-encrypted traffic. At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.

Next Steps

Learn more by reading our user docs and developer docs.