检查我的服务器证书时出现错误：
One of the certificates is signed with a SHA1 signature. We recommend that you reissue or replace this certificate with one that uses a SHA-2 signature. Contact your SSL provider about how to do this. Read more about the SHA-1 deprecation here.
此错误是因为服务器 apache 显示 SHA1 而不是 SHA2
在我的 Centos 服务器上没有问题。
如何更新或强制 Apache 仅使用 SHA2？