更新yum源遇到SSL证书过期的问题解决方法

更新yum源遇到SSL证书过期的报错

[root@ESNode01 ~]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base extras pgdg-common pgdg10 pgdg11 pgdg12 pgdg13 pgdg14 updates
Cleaning up everything
Cleaning up list of fastest mirrors
[root@ESNode01 ~]# yum makecache
Loaded plugins: fastestmirror
base                                                                                                  | 3.6 kB  00:00:00     
extras                                                                                                | 2.9 kB  00:00:00     
https://download.postgresql.org/pub/repos/yum/common/redhat/rhel-7-x86_64/repodata/repomd.xml: [Errno 14] curl#60 - "The certificate issuer's certificate has expired. Check your system date and time."
Trying other mirror.
It was impossible to connect to the CentOS servers.
This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
Please collect information about the specific failure that occurs in your environment,
using the instructions in: https://access.redhat.com/solutions/1527033 and create a bug on https://bugs.centos.org/

解决方法

[root@ESNode01 ~]# vim /etc/yum.conf 

sslverify=false

增加该配置，关闭ssl验证