CentOS will be shut down in 2024 because its upstream distribution, RHEL 8, has been shut down. This shutdown will affect the CentOS 8 system, preventing it from continuing to receive updates. Users should plan for migration, and suggested options include CentOS Stream, AlmaLinux, and Rocky Linux to keep the system safe and stable.
CentOS 2024 shut down maintenance
CentOS, a popular Linux distribution, will be out of maintenance on December 31, 2024. This announcement has raised many questions, such as:
What is the reason?
Red Hat Enterprise Linux (RHEL) 8, the upstream distribution of CentOS 8, was suspended in May 2021. Because CentOS is highly coupled with RHEL, CentOS is difficult to continue maintaining without an RHEL base.
What is the impact?
CentOS 8 systems will stop receiving security updates and bug fixes after December 31, 2024. This means that these systems will become vulnerable to security vulnerabilities and stability issues.
what do I do?
If you are currently using CentOS 8, there are several options:
- Migrate to CentOS Stream: This is a rolling release that provides the same foundation as CentOS 8, but with more frequent security updates.
- Migrate to AlmaLinux: This is a community-supported distribution that is compatible with CentOS 8 binary.
- Migrate to Rocky Linux: This is another community-supported distribution that is compatible with CentOS 8 binary.
It is recommended that you start planning the migration process by December 31, 2024.
Why migration?
Migrating to a supported distribution is critical to keeping your system safe and stable. Outdated systems can be at risk for missing security vulnerabilities and bug fixes, which can lead to downtime, data loss, and even security vulnerabilities.
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Alternatives to CentOS include RockyLinux, AlmaLinux, OracleLinux, and SLES. 1) RockyLinux and AlmaLinux provide RHEL-compatible binary packages and long-term support. 2) OracleLinux provides enterprise-level support and Ksplice technology. 3) SLES provides long-term support and stability, but commercial licensing may increase costs.

Alternatives to CentOS include UbuntuServer, Debian, Fedora, RockyLinux, and AlmaLinux. 1) UbuntuServer is suitable for basic operations, such as updating software packages and configuring the network. 2) Debian is suitable for advanced usage, such as using LXC to manage containers. 3) RockyLinux can optimize performance by adjusting kernel parameters.

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Times can be specified as immediate (now), minutes ( minutes), or a specific time (hh:mm). Added information can be displayed in system messages.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change IP address: Edit IPADDR= Line changes the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Lines Restart the network service: sudo systemctl restart network verification IP address: ip addr

CentOS installation steps: Download the ISO image and burn bootable media; boot and select the installation source; select the language and keyboard layout; configure the network; partition the hard disk; set the system clock; create the root user; select the software package; start the installation; restart and boot from the hard disk after the installation is completed.

The command to restart the SSH service is: systemctl restart sshd. Detailed steps: 1. Access the terminal and connect to the server; 2. Enter the command: systemctl restart sshd; 3. Verify the service status: systemctl status sshd.

Restarting the network in CentOS 8 requires the following steps: Stop the network service (NetworkManager) and reload the network module (r8169), start the network service (NetworkManager) and check the network status (by ping 8.8.8.8)


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