Getting started with Maestro
Maestro is a full container management service. Once your Docker images are ready we’ll take care of deploying and managing your containers and infrastructure (servers, load balancers, etc).
What you’ll need
Before you start, please check you have the following:
- A Cloud 66 Account — If you don’t already have one, sign up for a Cloud 66 account. There is a free community plan and you’ll get full unlimited access to all products free for 14 days.
- Container Images to deploy — These can be images you’ve built with Skycap or your own pre-built images that are hosted in an image repository.
- A Cloud Account or Your Own Servers — See below.
An account with your cloud provider of choice. Cloud 66 supports AWS, Google Cloud, Azure, Linode, DigitalOcean, Packet, Rackspace and Cloud A.
Registered servers are a great way for operations teams to manage and allocate physical server resources for consumption by dev teams. Registered servers are a pool of your own servers (on a private or public cloud) that can be used for any application and configuration. For more information on how to add your own registered servers, we recommend this tutorial.
If you don't have images or code ready, you can use this simple visit counter application we've supplied on Github. (You can also use this project with our next tutorial on Clusters.)
Choosing application type
New users will be shown the product selection wizard. For Maestro, choose “I have a containerized application” and then “I need to build a Kubernetes cluster” (Try Maestro).
If you’re already using Cloud 66 just click New Application → Maestro (Build a new cluster) button on the dashboard.
The first step is to give your application a name. This will be used to label your application throughout the Cloud 66 dashboard.
Next, you need to add at least one service. To your application. If you’re using our demo application, you will need to add a single service called
demo-app by pulling the code from this public repo.
To do this:
- Copy the Clone or download link from Github
- Paste it into the Git Repo URL field
- Type master into the branch field
- Click Go to fetch and analyze the code
Specifying the source of images
The Where is your service image? dropdown provides you with three options to specify the source of your services.
Build Image from a GitHub repo — This is the easiest way to add services if your code is hosted on GitHub. You’ll need to link your GitHub account with Cloud 66 before you can take advantage of this. Just click the Setup access to your GitHub projects. link. (This is the option you should pick if you’re using our “hello world” app)
Build image from any Git Repo — Use this option if you have a private git repo or you’re using another git provider such as BitBucket. You can also use this if you don’t want to link Cloud 66 to your GitHub account. You will need to add your Cloud 66 public key if your repo is private. You’ll be prompted to do this if it’s required.
It’s in a Docker image repository — Use this to add pre-built images to a project. You can use a service like DockerHub or your own private image repo. If you’re using a private repository you’ll be prompted to add the necessary login credentials.
Building application images
Before you can deploy your application, you need to build your services into container images. To do this, click the green Build Application Images button.
You can now watch the build log as Maestro fetches your application code and builds it into Docker images, ready for deployment.
Preparing for deployment
To start the deployment process click the Set up a Deployment button from the Application Overview page. You will then need to configure various aspects of the application to ensure it’s deployed properly. This includes:
- Network configuration
- Data source(s)
- Target server(s)
Container network configuration
Our sample application is composed of a single Python service that we’ve named demo-app. This is a web app so we need to configure the service to handle web traffic.
At the moment we can see that 0 services are connected to the Internet. To change this we click on the plug icon to open the network setting panel.
The demo-app service will run inside a container, so we need to configure that container to respond to web traffic. A standard web server listens on port 80 for HTTP traffic, so we’re going to use that as our Public Internet Port
The demo-app service listens to port 5000 so we need set the Container Port to
5000 to the Public Internet Port to
Adding a data source
The application also needs a redis data store, so we should add one now:
- Click on Add Data Source
- Select Redis from the list of available source
- Click Done
Our application is now configured and ready to deploy.
Choose a cloud provider
Now we need to choose a cloud provider as a target for the deployment. You can do this using the dropdowns in the right-hand column.
For this demo we’ll use DigitalOcean and deploy the application to the London, UK region.
You can also deploy to your own servers. First you need to add them as registered servers.
Configure server size
The server size can be set by clicking on the cog at the top right the server.
Learn more about choosing the right size for your servers.
Deploy your app
Now everything is ready to go, just hit the Deploy button.
If this is your first deployment you’ll be prompted to enter your access credentials for your cloud hosting provider. Once you’ve added these the deployment will begin.
During the build and deployment process you can view the log to see what’s happening behind the scenes.
The initial deployment process may take 15 minutes or more, because Maestro needs to provision the new server from the ground up. You can close the window and Maestro will send you an email when the deployment is complete.
Test your app
Once deployment is complete, you can test your application by visiting your app’s detail page and clicking on the Visit Site link in the panel at the top of the Services tab.
If youre deployment has worked as planned, you will see the following text:
“Hello World! I have been seen X times”
…(where X is a positive integer). If you refresh the page, that number should increase by one. This dynamic data is coming from the redis data store that we added to the app.