centos7使用chrony同步阿里云时间

1、yum -y install chrony
2、cp /etc/chrony.conf /etc/chrony.conf.bak
3、sed -i '/^server/s/^/#/g' /etc/chrony.conf
4、sed -i '6c server ntp.aliyun.com iburst\nserver ntp1.aliyun.com iburst\nserver ntp2.aliyun.com iburst\nserver ntp3.aliyun.com iburst\nserver ntp4.aliyun.com iburst\nserver ntp5.aliyun.com iburst\nserver ntp6.aliyun.com iburst\nserver ntp7.aliyun.com iburst\nbindacqaddress 0.0.0.0\nallow 0/0\nlocal stratum 10' /etc/chrony.conf
5、systemctl restart chronyd
6、systemctl enable --now chronyd