結論
ca-certificates.noarchパッケージを再インストールする。
エラーメッセージ
[Errno 14] curl#60 - "Peer's Certificate issuer is not recognized."
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.
You can try to solve this issue by using the instructions on https://wiki.centos.org/yum-errors
If above article doesn't help to resolve this issue please use https://bugs.centos.org/.
対処
yum --disablerepo=epel --disablerepo=nodesource --disablerepo=pgdg96 --disablerepo=yarn reinstall ca-certificates.noarch