


#How to solve the problem that centos cannot be opened in vmware?
1. Right-click the VMware icon and select Properties;
2. Switch to "Compatibility", check Run this program in compatibility mode, and select Windows 7 (more server knowledge Baidu search: Host Detective);
3. Check "Run as administrator" under the privilege level, then click OK and run vmware to see if it can Run normally, if possible, you don’t need to do the following steps;
4. Right-click the computer and click Manage;
5. Click on Services and Application Services;
#6. Find the vmware service "VMware Authorization Service" and set it to automatic Start and turn on.
7. After the above steps, you can successfully open and use the VMware virtual machine.
Related references: centOS tutorial
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CentOS was terminated because RedHat shifted its focus to CentOSStream, which was used to speed up the RHEL development cycle and drive users to move to RHEL. Alternatives include: 1.RockyLinux, 2.AlmaLinux, 3.OracleLinux. Compatibility, support, and long-term planning are considered when choosing an alternative.

The best way to migrate from CentOS is to choose RockyLinux, AlmaLinux, or UbuntuServer. 1) Back up data, 2) Evaluate existing systems, 3) Test migration, 4) Perform migration, 5) Verify and optimize to ensure the best system performance.

CentOS has stopped maintaining and has moved to CentOSStream and no longer provides a production-friendly version. Impacts include system migration and enterprise reevaluation of Linux policies. Alternatives are: 1. Migrate to RHEL, 2. Turn to Ubuntu or Debian, 3. Consider CentOSStream as a test platform, 4. Use AlmaLinux or RockyLinux. It is recommended to develop a migration plan as early as possible to evaluate existing system and team needs.

Use Ansible to implement automated management of CentOS. The specific steps include: 1) writing a playbook to define tasks, such as installing and configuring Apache; 2) executing the playbook through the SSH protocol to ensure consistency of system configuration; 3) using conditional judgment and loop functions to handle complex scenarios; 4) optimizing performance and following best practices, such as using asynchronous tasks and optimizing inventory files.

Frequently asked questions and answers to CentOS interview include: 1. Use the yum or dnf command to install software packages, such as sudoyumininstallnginx. 2. Manage users and groups through useradd and groupadd commands, such as sudouseradd-m-s/bin/bashnewuser. 3. Use firewalld to configure the firewall, such as sudofirewall-cmd--permanent-add-service=http. 4. Set automatic updates to use yum-cron, such as sudoyumininstallyum-cron and configure apply_updates=yes.

How to diagnose and solve common problems in CentOS system? First, check the startup log to solve the failure of system startup; second, check the network configuration file to solve the network problem; finally, use the Yum command to solve the package management problem. Through these steps, you can effectively diagnose and resolve common problems in CentOS systems.

CentOS server security reinforcement can be achieved through the following steps: 1. Keep the system software updated and use the "sudoyumupdate-y" command; 2. Disable unnecessary services, such as "sudosystemctldisablecups&&sudosystemctlstopcups"; 3. Configure SELinux as mandatory mode, use the "sudosetenforce1&&sudosed-i's/SELINUX=permissive/SELINUX=enforcing/g'/etc/selinux/config" command; 4. Regularly

Advanced command line management skills of CentOS include: 1. Use systemctl to manage system services, 2. Use top to monitor system resources, 3. Use yum to manage software packages, 4. Use find and xargs to batch process files, 5. Use rsync to optimize file copying. These techniques can improve productivity, solve common problems, and optimize system performance.


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