docker pull 失败报错：x509: certificate has expired or is not yet valid

[root@node3 docker]# docker pull gcr.io/google_containers/pause-amd64:3.1
Error response from daemon: Get https://gcr.io/v2/: x509: certificate has expired or is not yet valid

这种错误，一般都是本地系统时间错误导致报错证书过期，所以先查看本地系统时间

[root@node3 docker]# date
Wed Jun 10 19:08:23 CST 2020

安装ntp同步时间

[root@node3 docker]# yum install -y ntp
[root@node3 docker]# crontab -l
*/2 * * * * /usr/sbin/ntpdate 182.92.12.11;/sbin/hwclock -w > /dev/null #2>&1

同步完时间重新拉取镜像成功！！！