System and method for upgrading operating system of a container using an auxiliary host

A system for upgrading a container to another version of an operating system while preserving user applications and data of the container, the system comprising:

• at least one processor executing a control agent configured to control:
• copying, from a first container host to an auxiliary host, an operating system kernel of the first container host, and system files, user applications and data of the container;
• upgrading on the auxiliary host, the operating system, including the operating system kernel and system files of the container, from one version of the operating system to another version of the operating system, while preserving user applications and data;
• and
• copying, from the auxiliary host to a second container host, the system files of the upgraded operating system, and the preserved user applications and data.

A system for upgrading a container to another version of an operating system while preserving user applications and data of the container, the system comprising:

• a first container host comprising a kernel of a first version of the operating system and configured to run at least one container, the container comprising system files, user applications and data;
• a second container host comprising a kernel of a second version of the operating system;
• an auxiliary host communicatively coupled to the first and second container hosts;
• wherein:
• the operating system kernel, system files, user applications and data of the container are copied from the first container host to the auxiliary host;
• the operating system on the auxiliary host, including the operating system kernel and system files of the container, is upgraded from one version of the operating system to another version of the operating system, while preserving the user applications and data;
• and
• the system files of the upgraded operating system, and the preserved user applications and data are copied from the auxiliary host to the second container host.

A non-transitory computer readable medium storing computer executable instructions for upgrading a container to a newer version of an operating system while preserving user applications and data of the container, including instructions for:

• copying, from a first container host to an auxiliary host, an operating system kernel of the first container host, system files and user applications and data of the container;
• upgrading on the auxiliary host the operating system, including the operating system kernel and system files of the container, from one version of the operating system to another version of the operating system, while preserving the user applications and data;
• and
• copying, from the auxiliary host to a second container host, the system files of the upgraded operating system, and the preserved user applications and data.