Linux receives many updates to its kernel. These updates may add features or patch bugs. It's advisable to update your kernel whenever there's a new one. This video talks about how to get your kernel version, how to update it, and also how to roll back to a previous version.
- [Instructor] In chapter two,…we looked at how to change the default kernel…using the grub2 set default command.…Now let's look into updating the kernel.…First let's list our currently installed kernel packages.…In a terminal, typ in sudo, space, yum space, list space,…installed space, kernel hyphen asterisk, and hit enter.…The item with the line under it is our current kernel.…On my system the version is 3.10.0-514.…Your version may be different than this.…
This means the major version is three,…the major revision is 10, the kernel patch version is zero,…and the Red Hat version is 514.…It's built for Enterprise Linux 7,…and it's compiled for 64-bit CPUs.…The installed kernels reside in slash boot.…Type in clear, and then let's list slash boot…by typing in ls space, dash l,…space slash boot, and hit enter.…The kernels are named vmlinuz.…
We also have ram disk images and configuration files.…To see our current kernel, use the uname command.…Type in uname space dash r, hit enter.…This will show the exact kernel release that's running,…
Author
Grant McWilliams
Released
9/14/2017- Linux boot loader process
- Creating a custom GRUB menu entry
- Booting into the emergency target
- Linux init services
- Making systemd services persistent
- Linux kernel directory structure
- Updating the kernel
- Managing kernel modules
- System logging
- Searching and rotating log files
Skill Level Intermediate
Duration
Views
-
Introduction
-
Welcome48s
-
-
1. The Linux Boot Loader
-
GRUB overview5m 51s
-
2. System Initialization
-
Linux init services3m 26s
-
Get systemd service status3m 56s
-
Manage systemd services2m 33s
-
-
3. The Linux Kernel
-
Update the kernel4m 29s
-
Manage kernel modules5m 18s
-
4. System Logging
-
Search log files4m 49s
-
View system log files5m 4s
-
View systemd journal3m 26s
-
Use rsyslog filters1m 25s
-
Rotate log files2m 33s
-
-
Conclusion
-
Next steps24s
-
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.
Share this video
Embed this video
Video: Update the kernel