2.1 What Is Docker

Docker is a tool that uses OS-level virtualization to deliver software in packages called containers. Containers make it easy to create, deploy, and run applications. Containers are isolated from one another and bundle their software, libraries, and configuration files. They can communicate with each other through well-defined channels.

Docker benefits system administrators as it provides flexibility and reduces the number of systems needed because of its small footprint and lower overhead. The Advanced Edition containers can be deployed quickly on Kubernetes services provided by Azure, thereby reducing downtime. The Advanced Edition containers are also highly scalable to meet your requirements.

Kubernetes is a container orchestration engine for Docker. Advanced Edition is deployed on Kubernetes clusters to automate the manual processes of deploying and managing the Advanced Edition containers.

Advantages of Docker

Enterprise software built as Docker containers is easier to assemble and maintain. Some of the parameters that Docker containers enable are:

  • Isolation

  • Portability

  • Orchestration and Scaling

Isolation: Docker container isolates the applications from one another, and also from the primary system. This makes the software stack clean, and it becomes easier to monitor an application's usage of system resources, such as CPU, memory, and networking.

Portability: Docker containers can run on any system that supports the container’s runtime environment.

Orchestration and Scaling: You can deploy many Advanced Edition containers on a single system as the containers are lightweight. You can also have multiple systems with containers. Containers can also be used to scale SecureLogin components across clusters of systems when required.