What operating system is centos 7?

centos 7 is an open source server operating system released by the CentOS project. It was officially released on July 7, 2014; CentOS 7 is an enterprise-level Linux distribution, which is derived from the free and open source code of RedHat. Reissue.

#The operating environment of this article: centos7 system, Dell G3 computer.

What operating system is centos 7?

CentOS 7 is an open source server operating system released by the CentOS project and was officially released on July 7, 2014.

CentOS 7 is an enterprise-level Linux distribution that is redistributed from RedHat's free and open source code. The CentOS 7 kernel has been updated to 3.10.0, supports Linux containers, supports Open VMware Tools and 3D images out of the box, supports OpenJDK-7 as the default JDK, supports iSCSI and FCoE in the kernel space, supports PTPv2 and other functions.

On November 12, 2020, the official version of CentOS 7 was launched, CentOS 7.9.2009, the final version of the series.

System evaluation

CentOS 7 updates the kernel version to 3.10.0. The new version of the kernel will compress the swap memory space, which will significantly improve I/O Performance, optimized KVM virtualization support. In terms of file systems, CentOS 7 supports the XFS file system by default, and KVM has been updated to support ext4 and XFS snapshots.

In terms of network, CentOS 7 supports Firewall. The firewall can support zone and network trust. After configuring the firewall, you do not need to restart the firewall to apply the configuration. Importantly, CentOS 7 supports Linux containers and can provide lightweight virtualization to isolate processes and resources, which will improve resource usage efficiency.

For operation and maintenance personnel, CentOS 7 has brought huge changes in terms of functions, operational convenience and performance, as well as changes in some operation methods (such as firewalls, system service management), which can make operation and maintenance more convenient. A more efficient management system for personnel. (Comments by Wang Yafei of Pingdingshan University, from "CentOS 7 System Management and Operation and Maintenance Practice")

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