任务                                            旧指令                                        新指令
使某服务自动启动                   chkconfig –level 3 httpd on    systemctl enable httpd.service
使某服务不自动启动                chkconfig –level 3 httpd off    systemctl disable httpd.service
检查服务状态                          service httpd status                   systemctl status httpd.service （服务详细信息） systemctl is-active httpd.service （仅显示是否 Active)
显示所有已启动的服务             chkconfig –list                          systemctl list-units –type=service
启动某服务                              service httpd start                     systemctl start httpd.service
停止某服务                              service httpd stop                     systemctl stop httpd.service
重启某服务                              service httpd restart                  systemctl restart httpd.service

Centos 7启动命令发生了很大的变化

设置开机自启动

systemctl enable nfs-server.service

下面以nfs服务为例：

1.启动nginx服务

systemctl start nfs-server.service

2.设置开机自启动

systemctl enable nfs-server.service

3.停止开机自启动

systemctl disable nfs-server.service

4.查看服务当前状态

systemctl status nfs-server.service

5.重新启动某服务

systemctl restart nfs-server.service

6.查看所有已启动的服务

systemctl list -units --type=service