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Disable Delivery Optimization

• Data 08/08/2021
• Autor Costel Beloi
• -10
• 499

The Windows Update Delivery Optimization is a system used by Windows for updates delivery to PCs. This is a peer-to-peer delivery system through which Windows may upload updates that have already been downloaded on your PC to another PC on the internet. This may affect your games and other apps while using them, due to network usage in the background. You can disable this option to prevent network issues.

How to update from RHEL 8.3 to 8.4

• Data 08/08/2021
• Autor ionut dobre
• 0
• 630

Let us see what’s new in RHEL 8.4 and how to update 8.3 to 8.4 using the dnf command-line option.

RHEL 8.4 released

From the RedHat Enterprise Linux version 8.4 product page:

• Hybrid cloud your way: RHEL 8.4 enables the innovation and transformation required to get to the cloud, the edge and beyond.

• RHEL at the Edge

• Red Hat Insights: Expanded capabilities in the Red Hat Insights services — Vulnerability, Compliance, Resource Optimization, and Subscriptions — help organizations to more efficiently and effectively manage their RHEL estates across the open hybrid cloud, including deployments in the public cloud.

New software and feature in RHEL 8.4:

1. Python 3.9
2. Redis 6
3. PostgreSQL 13
4. MariaDB 10.5
5. GCC 10
6. LLVM 11
7. Rust 1.49
8. Go 1.15.7
9. Intel Tiger Lake GPUs are now supported which includes Intel UHD graphics and Intel Xe integrated GPUs.

WARNING: Make sure you keep verified RHEL 8.x backups before performing minor or significant RHEL version upgrades.

How to update RHEL 8.3 to 8.4

The procedure to upgrade or update RHEL from version 8.3 to 8.4 is as follows:

1. Open the terminal application and then type the following commands. Another option is to log in using ssh
2. Login as the root user. For example: ssh ec2-user@rhel-8-ec2-box
3. Check for updates using the sudo dnf check-update command
4. Update the system using the sudo dnf update command
5. Reboot the server/box using the sudo reboot command
6. Verify new kernel and updates

Another option is to deploy updated images and get rid of older instances. Let us see all commands and steps in details.

Step 1 – Note down the current kernel version

Type the following uname command or cat command to view RHEL kernel version and OS info:
$ uname -a
$ uname -r
$ cat /etc/os-release

Step 2 – Backups

Make a backup – it cannot be stressed enough how important it is to backup your system before you do this.

Step 3 – Check for updates using dnf

Type the following dnf command:
$ sudo dnf check-update

Step 4 – Upgrading RHEL 8.3 to 8.4

Type the following dnf command to apply/install updates:
$ sudo dnf upgrade -y

================================================================================
 Package          Arch   Version         Repository                        Size
================================================================================
Installing:
 kernel-core      x86_64 4.18.0-305.el8  rhel-8-for-x86_64-baseos-rpms     36 M
 kernel-modules   x86_64 4.18.0-305.el8  rhel-8-for-x86_64-baseos-rpms     28 M
Upgrading:
 NetworkManager   x86_64 1:1.30.0-7.el8  rhel-8-for-x86_64-baseos-rpms    2.6 M
 NetworkManager-libnm
                  x86_64 1:1.30.0-7.el8  rhel-8-for-x86_64-baseos-rpms    1.8 M
 NetworkManager-team
                  x86_64 1:1.30.0-7.el8  rhel-8-for-x86_64-baseos-rpms    145 k
 NetworkManager-tui
                  x86_64 1:1.30.0-7.el8  rhel-8-for-x86_64-baseos-rpms    327 k
.....
..
.....
rdma-core        x86_64 32.0-4.el8      rhel-8-for-x86_64-baseos-rpms     59 k
 tpm2-tss         x86_64 2.3.2-3.el8     rhel-8-for-x86_64-baseos-rpms    275 k
 volume_key-libs  x86_64 0.3.11-5.el8    rhel-8-for-x86_64-appstream-rpms 149 k
Installing weak dependencies:
 udisks2          x86_64 2.9.0-6.el8     rhel-8-for-x86_64-appstream-rpms 474 k
Removing:
 kernel-core      x86_64 4.18.0-240.10.1.el8_3
                                         @rhel-8-for-x86_64-baseos-rpms    62 M
 kernel-modules   x86_64 4.18.0-240.10.1.el8_3
                                         @rhel-8-for-x86_64-baseos-rpms    21 M
 
Transaction Summary
================================================================================
Install   38 Packages
Upgrade  210 Packages
Remove     2 Packages

Step 5 – Reboot the RHEL 8.3 box

Type the following reboot command or shutdown command to reboot Linux system:
$ sudo reboot
## OR ##
$ sudo shutdown -r now

Step 6 – Verify the RHEL 8.4 update

Type the following commands:
$ uname -a
$ uname -r
$ cat /etc/os-release
$ tail -f /var/log/logfilenames
$ dmesg | grep -i 'err|warn|cri'
$ ss -tulpn
Sample session from version 8.4: