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.
How to install on CentOS
Introduction
CentOS (Community Enterprise Operating System) is a free and open source operating system based on Red Hat Enterprise Linux (RHEL). As an enterprise-level operating system, CentOS is widely used in server and workstation environments. This article will guide you through the detailed steps of installing on CentOS.
Installation steps
1. Create a bootable media
- Download the ISO image from the official CentOS website.
- Burn the ISO image to a DVD or USB drive using burning software or third-party tools.
2. Start and select the installation source
- Insert bootable media into the server or workstation.
- Start the machine and follow the on-screen prompts to select Start from bootable media.
- In the Installer menu, select "Install CentOS Linux".
3. Select language and configure keyboard
- Select your preferred display language and keyboard layout.
4. Set up the network
- If you are connecting with a wired network, the network will be automatically configured.
- If you are using a wireless network, you will need to manually select and enter your network name and password.
5. Partition hard disk
- Select Automatic Partition or Custom Partition.
- If you select Automatic Partitioning, the installer will automatically create partitions for the operating system and user data.
- If you select Custom Partition, you can create and adjust the partition manually.
6. Set the system clock
- Select your time zone and clock settings.
7. Create a root user
- Create a root user and set a password for it.
8. Select the package
- Select the package you want to install with CentOS.
- The most basic installation includes the "Minimum Installation" or "Server" options.
9. Start the installation
- Confirm your installation settings and click Start Installation.
- The installation process will begin and may take some time.
10. Complete the installation
- After the installation is complete, you will be prompted to restart.
- Reboot the system and boot from the hard disk.
Log in and configure
- Log in with the root user you created during the installation process.
- Use the following command to update the system and install the basic software package:
<code>yum update -y yum install vim nano wget git</code>
Congratulations! You have successfully completed the installation on CentOS. Now you can start using and configuring your system.
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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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