Containers are an IT workload hosting option increasingly tapped for major production deployments. Often pushed upon the masses by developers or pilot DevOps teams, containers represent significant deployment, management and security changes for enterprise IT operations. Arguably, containers are nothing new, based in resource partitioning technology from the 1960s. Many IT professionals know containers by what they are not –namely,VMs. Containers are OS-level virtualization instances, while VMs virtualize the hardware resources of hosts or clusters of hosts. The present form of containers is embodied by Docker, an application containerization technology, and LXC, which is a method of system containerization. Over the course of a decade, container adoption has shot up, first in Linux and now also Windows systems, and many enterprise IT organizations must now decide what technologies to deploy and what standards to enforce for container provisioning and support.
These expert tips provide an introduction to containers and container management technologies for IT operations and administrators. Once you have a grasp on the major points, dig into the common questions and concerns –such as security–covered in the last section.
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