Problem

The following describes the process of deploying Apache OpenWhisk on Red Hat Container Development Kit using an installation of RHEL/CentOS.

Solution

Set Up the KVM Driver.

 sudo /bin/bash -c '# Install Docker Machine v0.15.0
                    curl -L 'http://bit.ly/2CPLoyp' -o /usr/local/bin/docker-machine \
                    && chmod +x /usr/local/bin/docker-machine

                    # Install Docker Machine KVM driver for Docker Machine
                    curl -L 'http://bit.ly/2CU65sN' -o /usr/local/bin/docker-machine-driver-kvm \
                    && chmod +x /usr/local/bin/docker-machine-driver-kvm

                    # Install libvirt and qemu-kvm on your system
                    yum install libvirt qemu-kvm

                    # Add yourself to the libvirt group
                    usermod -a -G libvirt $USER

                    # Start the libvirtd service
                    systemctl start libvirtd
                    systemctl enable libvirtd'

Install CDK (minishift).

Configure minishift with ample resources.

 minishift config set cpus 2
 minishift config set memory 8GB

Configure components needed to run minishift.
```
 minishift setup-cdk
```
Start minishift.
```
 minishift start
```
Make the oc command available in your PATH.
```
 eval $(minishift oc-env)
```
Create a new project for OpenWhisk.
```
 oc new-project openwhisk
```

Deploy OpenWhisk in your project using the latest ephemeral template.

 TEMPLATE_PARAMS="INVOKER_MEMORY_REQUEST=512Mi INVOKER_MEMORY_LIMIT=512Mi INVOKER_JAVA_OPTS=-Xmx256m INVOKER_MAX_CONTAINERS=2 COUCHDB_MEMORY_REQUEST=256Mi COUCHDB_MEMORY_LIMIT=256Mi" \
 && oc process -f https://git.io/openwhisk-template $TEMPLATE_PARAMS | oc create -f -

Install OpenWhisk CLI (wsk).

 sudo /bin/bash -c 'curl -L 'http://bit.ly/2Fl0Pl0' | tar -xvzf - -C /bin wsk &>/dev/null'

Config wsk CLI Authentication

AUTH_SECRET=$(oc get secret whisk.auth -o yaml | grep "system:" | awk '{print $2}' | base64 --decode) \
&& wsk property set --auth $AUTH_SECRET --apihost $(oc get route/openwhisk -o jsonpath='https://{.spec.host}')

Optionally, install Whisk Deploy (wskdeploy) to help deploy and manage all your OpenWhisk Packages, Actions, APIs, Triggers and Rules using a single command.
```
sudo /bin/bash -c 'curl -L 'http://bit.ly/2CWlidd' | tar -xvzf - -C /bin wskdeploy &>/dev/null'
```
Verify your OpenWhisk environment.
```
wsk --insecure list
wsk --insecure action invoke /whisk.system/utils/echo --param message hello --blocking
```
Note that the --insecure option avoids the validation error triggered by the self-signed cert in the nginx service.
Check out Getting started with OpenWhisk.

Summary

OpenWhisk is largely credited to IBM for seeding. It is an open source implementation of a cloud-first distributed event-based programming service that allows calling of a specific function in response to an event without requiring any resource management from the developer.

Click here to see a curated list of awesome OpenWhisk things!