Detailed comparison between CentOS 6.x and CentOS 7.x-CentOS-php.cn

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Detailed comparison between CentOS 6.x and CentOS 7.x

File system

CentOS 6.x

EXT4: The capacity of a single file system reaches 1EB, and the size of a single file Reaching 16TB.

CentOS 7.x

XFS: The default supports a single file system of 8EB minus 1 byte, the maximum supported file size is 9EB, and the maximum file system size is 18EB .

Firewall

CentOS 6.x
- iptables
CentOS 7. x
- firewalled

Kernel version

CentOS 6.x
- 2.6.x-x
CentOS 7.x
- 3.10.x-x

Default Database

CentOS 6.x
- MySQL
CentOS 7.x
- MariaDB

Time synchronization, time zone modification, language modification

Operation	CentOS 6.x	CentOS 7.x
Time synchronization	ntpq -p	chronyc sources
Time zone modification	/etc/sysconfig/clock	timedatectl set-timezone Asia/Shanghai
Language Modify	/etc/sysconfig/i18n	localectl set-locale LANG=zh_CN.UTF-8

Host name

CentOS 6.x
- Configuration file:/etc/sysconfig/network
##CentOS 7.x

Network Service Management

OperationCentOS 6.xCentOS 7.x##Start serviceClose serviceRestart serviceView service statusView all service statusSet the service to start automaticallySet the service not to start automatically View the self-starting status of all servicesNetwork settings


service service name start	systemctl start service name
service service namestop	systemctl stop service name
service service name restart	systemctl restart service name
service service name status	systemctl status service name
service --status-all	systemctl list-units
chkconfig service name on	systemctl enable service name
chkconfig service name off	systemctl disable service name
chkconfig --list	systemctl list-unit-files

OperationNetwork card nameNetwork configuration commandNetwork service

CentOS 6.x	CentOS 7.x
eth0	ens33
ifconfig/setup	ip/nmtui
network	NetworkManager (network) backup

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