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RancherOS v1.2.0 was officially released on February 7, Beijing time. During the development cycle from v1.1 to v1.2, we collected the Bug report and Feature request of community and business users. Thank you for your contribution.

During this cycle, the exposure of Meltdown and Spectre vulnerabilities has caused a heavy blow to the OS world, and we are always following the industry trend to update the vulnerability patch to RancherOS as soon as possible.

Spectre Var.2 vulnerability repair

For Spectre variant 2, we used a new GCC compiler to open the Retpoline instruction to recompile the kernel. We did not adopt the microcode patch of Intel, because this patch has been deeply criticized by the industry, which has caused many cloud vendors' Crash problems.

Based on the latest RancherOS v1.2.0, you can use this method to detect the repair status of Meltdown and Spectre:

Sudo system-docker run-- rm-it-v /: / host niusmallnan/spectre-meltdown-checker

ARM32 is no longer supported

Considering the development of 32-bit operating system and the support of other Linux distributions, RancherOS no longer supports ARM 32-bit hardware. ARM 64-bit will continue to support it, and you can still use it on raspberry pie.

Raspberry pie image: https://github.com/rancher/os/releases/download/v1.2.0/rancheros-raspberry-pi64.zip

Reference for installation method: https://www.raspberrypi.org/documentation/installation/installing-images/

Individual Console updates

RancherOS supports a variety of console, such as Ubuntu, Debian, Alpine, and so on. Busybox console is used by default. Busybox console is based on Buildroot, and this release has updated a newer stable version.

All other console are updated to LTS version, which is as follows:

● Alpine: 3.7

● CentOS: 7.4.1708

● Debian: stretch

● Fedora: 27

● Ubuntu: xenial

These are all the contents of the article "what are the improvements in the release of RancherOS v1.2.0?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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