Linux is the operating system that underlies most container technologies, including Docker, the most popular container runtime. This is because Linux provides a number of features that are well-suited to containers, including support for namespaces and cgroups.
Namespaces are a way to isolate resources within a single Linux instance, such as processes, networking, and filesystems. This allows you to create multiple isolated environments within a single Linux instance, which is useful for running multiple containers on the same host.
Cgroups (short for "control groups") are a way to allocate resources, such as CPU and memory, to groups of processes. This allows you to control the resources that are available to a container, ensuring that it has the resources it needs to run correctly.
Overall, containers are native to Linux because they rely on features such as namespaces and cgroups that are provided by the Linux kernel. These features allow you to create lightweight and portable containers that can run on any machine that supports the container runtime.
Containers are not native to Linux in the sense that they are not part of the core Linux operating system. However, Linux is the underlying operating system for most container technologies, including Docker, the most popular container runtime. This is because Linux provides a number of features that are well-suited to containers, including support for namespaces and cgroups, which allow you to create lightweight and portable containers that can run on any machine that supports the container runtime.
Overall, while containers are not native to Linux, they are heavily dependent on Linux and rely on features provided by the Linux kernel to function. As a result, Linux is the most common operating system used for running containerized applications.
The concept of containers has a long history, dating back to the 1970s with the development of chroot on Unix systems. However, it wasn't until the 2000s that containers began to gain widespread adoption.
One of the early pioneers in container technology was Solaris Zones, which was introduced by Sun Microsystems in 2004. Solaris Zones allowed users to create multiple isolated environments on a single server, similar to containers.
Another early container technology was LXC (Linux Containers), which was developed in the early 2010s and provided a way to run multiple isolated Linux systems on a single host.
The most popular container technology today is Docker, which was first released in 2013. Docker introduced a number of innovations that made containers more lightweight and easy to use, and it quickly gained widespread adoption in the development community.
Since then, containers have become an essential tool for developers and operations teams, and they have revolutionized the way that software is built, deployed, and run.