To activate the latest kernel version, reboot the instance: ~]$ sudo rebootĨ. The following example shows that the old kernel is still active: ~]$ uname -rħ. Verify the installed kernels from the RPM database: ~]$ rpm -qa |grep kernel Note the line that shows that the state has changed from available to enabled: 49 kernel-5.4=latest enabled ĥ.
After the installation completes, verify that the state has changed in amazon-linux-extras: ~]$ sudo amazon-linux-extras |grep kernel
#Linux kernel versions install#
Use the amazon-linux-extras tool to install the kernel 5.4: sudo amazon-linux-extras install kernel-5.4 -yĤ. This output lists the three kernel options available from the Amazon Linux Extra repository:ģ. Verify what kernel versions are offered by the amazon-linux-extras repository: ~]$ sudo amazon-linux-extras |grep kernel In the following example, the current kernel version running on the system is 4.14.268-205.500. Review the current active kernel version.
#Linux kernel versions upgrade#
Resolution Upgrade the Amazon Linux 2 default kernel from 4.14.x to Amazon Linux Extras kernel 5.4.xġ. Note: You can upgrade directly from Amazon Linux 2 kernel version 4.14.x to 5.10.x without having to upgrade to 5.4.x first. Or, if you have kernel version 5.4.x installed, you can upgrade to version 5.10.x. You can upgrade the default kernel to an Amazon Linux Extras kernel version 5.4.x. Since the sixth one appeared in late September, the number of bug fixes has been shrinking with each new release.The default kernel installed on Amazon Linux 2 instances is 4.14.x. The first of 11 test versions of the 2.6 kernel was released on July 13. Database application performance can be improved somewhat by changing the default behavior of the kernel's input-output scheduler, he added.ĭesktop and laptop users may still see some bugs, since the variety of hardware in such machines makes testing more difficult, Morton said.Įven though Version 2.4 was released almost three years ago, volunteers around the world are still contributing patches and fixes to it, making the decision to declare Version 2.6.0 ready - and put an end to testing - seem somewhat arbitrary. Fixes have already been found for some of these problems, and they will be introduced in Version 2.6.1, he said. Version 2.6 should run well on servers, although large database applications will experience performance problems, kernel maintainer Andrew Morton wrote in an e-mail to the Linux-kernel mailing list. At the other end of the scale, it includes support for low-cost, low-power processors with limited memory management capabilities, often used in embedded devices. Version 2.6, which has been tested on servers with up to 64 processors, supports up to 64GB of memory on 32-bit systems. A test version of the 2.6 kernel was released in July, with new features extending the operating system's reach into new markets. The previous production version of the kernel, 2.4, was released in January 2001.
It is the foundation on which the rest of the operating system is built. The Linux kernel handles communication with input and output devices, and it schedules and supervises the execution of other tasks. Readers of the Linux-kernel mailing list learned late yesterday that testing of the open-source operating system's new core had ended when they received an e-mail from Linus Torvalds that began with the cryptic phrase, "The beaver is out of detox." Version 2.6.0 of the Linux kernel is ready for business.
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