In this tutorial, we are going to build a simple Python app, using Thoth s2i. Thus getting intelligent recommendation on the software stack during the build process.
Why to use Thoth s2i build process?
For those who are new to this s2i refers to the Source to image process which bundles your source code to a image that can be run on OpenShift.
So when you use, Thoth s2i build process instead of the normal s2i build process, Thoth produces recommendations targeting your specific hardware configuration you use to run your application inside the cluster (e.g. specific GPU available in the cluster).
You can find a list of base images which you can use with Thoth in s2i-thoth repository with detailed instructions on how to use Thoth in the OpenShift’s s2i process. The container images are hosted at - quay.io with the prefix s2i.
We are going to discover more about it in the next step how you can customize the process.
In this demo, we are going to use an Openshift 4.2 playground.
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Thank you for trying to create an application using the Thoth's s2i build process.
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Building s2i with Thoth Advise
Before you get started we recommend reading the following steps. They explain a bit about how the playground environment is setup and what access you have.
Logging in to the Cluster via Dashboard
Click the Console tab to open the dashboard.
You will then able able to login with admin permissions with:
Logging in to the Cluster via CLI
When the OpenShift playground is created you will be logged in initially as
a cluster admin (
oc whoami) on the command line. This will allow you to perform
operations which would normally be performed by a cluster admin.
Before creating any applications, it is recommended you login as a distinct user. This will be required if you want to log in to the web console and use it.
To login to the OpenShift cluster from the Terminal run:
oc login -u admin -p admin
This will log you in using the credentials:
Use the same credentials to log into the web console. For simplicity we are logging in here as admin.
Creating your own Project
To create a new project called
myproject run the command:
oc new-project myproject
You could instead create the project from the web console. If you do this, to change to the project from the command line run the command:
oc project myproject
Now that you have created your own project, me move to the next step.