In a previous blog on OCCS, I covered the steps required to provision the service. As an input to the OCCS Service provisioning I was prompted to specify the number of worker nodes I required, which for my example I set to be two. Having provisioned the service, I can now start to build and run my Docker images on these worker nodes. As part of the provisioned service, I have a node dedicated to the Container Console which provides a nice web User Interface that allows me to Build, Deploy, Run and Manage Docker Containers on the worker node hosts that I provisioned as part of my service. The two worker nodes are the hosts that I will ultimately deploy and running the image of interest such as WordPress, MySQL, Oracle Database, Tomcat, Nginx, WebLogic Server or whatever you want pretty much. The Container Console makes it very easy to build, run and deploy images via a web administration console.
For those not familiar with Docker I recommend that you check out this 12 minute video by Jake Wright https://www.youtube.com/watch?v=YFl2mCHdv24. Docker is being used by many developers as it provides a lightweight and repeatable way to provision a target runtime environment to support their application development and testing. The Docker based approach is less resource hungry than a VM based approach because the host kernel is shared across the containers but as with all things IT there is no silver bullet and there are limitations associated with using Docker in contrast to VMs. Read the complete article here.
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