Kernel Live Upgrade Guide

This document describes how to install, deploy, and use the kernel live upgrade feature on openEuler. This kernel live upgrade feature on openEuler is implemented through quick kernel restart and live program migration. A user-mode tool is provided to automate this process.

This document is intended for community developers, open-source enthusiasts, and partners who want to learn about and use the openEuler system and kernel live upgrade. The users are expected to know basics about the Linux operating system.

Application Scenario

The kernel live upgrade is to save and restore the process running data with the second-level end-to-end latency.

The following two conditions must be met:

The kernel needs to be restarted due to vulnerability fixing or version update.
Services running on the kernel can be quickly recovered after the kernel is restarted.

Bug Catching

Buggy Content

Bug Description

Submit As Issue

It's a little complicated....

I'd like to ask someone.

Just a small problem.

I can fix it online!

Bug Type

Specifications and Common Mistakes

● Misspellings or punctuation mistakes;

● Incorrect links, empty cells, or wrong formats;

● Chinese characters in English context;

● Minor inconsistencies between the UI and descriptions;

● Low writing fluency that does not affect understanding;

● Incorrect version numbers, including software package names and version numbers on the UI.

Usability

● Incorrect or missing key steps;

● Missing prerequisites or precautions;

● Ambiguous figures, tables, or texts;

● Unclear logic, such as missing classifications, items, and steps.

Correctness

● Technical principles, function descriptions, or specifications inconsistent with those of the software;

● Incorrect schematic or architecture diagrams;

● Incorrect commands or command parameters;

● Incorrect code;

● Commands inconsistent with the functions;

● Wrong screenshots.

Risk Warnings

● Lack of risk warnings for operations that may damage the system or important data.

Content Compliance

● Contents that may violate applicable laws and regulations or geo-cultural context-sensitive words and expressions;

● Copyright infringement.

We may contact you through email in regard to the bug fixing solution. You will also be notified through email if you win any prize during the activity.