Step 1: Use Alibaba Cloud's yum source to install the software on Centos. If an error message appears as shown in the figure, it is found that the domain name cannot be resolved. The same is true for manually testing the Baidu domain name. Check the domain name configuration and find that Linux There is no DNS resolution configured on
Step 2: The methods of setting DNS under CentOS 7 and CentOS 6 are different, use a new command line Tool nmcli to set up
nmcli connection show------Display the current network connection
(Recommended tutorial: centos usage tutorial)
Step 3: Modify the DNS server corresponding to the current network connection. The network connection here can be identified by name or UUID (eth0 is the external network card)
nmcli con mod eth0 ipv4.dns "114.114.114.114 8.8.8.8"
Step 4: nmcli con up eth0---------Enable dns configuration to take effect
View The /etc/resolv.conf configuration has also been updated
Step 5: Use the www.baidu.com domain name to test and find that it has been parsed normally and the software has been installed successfully
Recommended related video tutorials: linux video tutorial
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What Comes After CentOS: The Road AheadApr 16, 2025 am 12:07 AMAlternatives 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.
CentOS: Exploring the AlternativesApr 15, 2025 am 12:03 AMAlternatives 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.
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Difference between centos and ubuntuApr 14, 2025 pm 09:09 PMThe 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)
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How to install centosApr 14, 2025 pm 09:03 PMCentOS 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.
Centos8 restarts sshApr 14, 2025 pm 09:00 PMThe 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.
How to restart the network in centos8Apr 14, 2025 pm 08:57 PMRestarting 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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