证书是和特定用户或者服务器联系的数字身份的一部分。

Certificates are part of digital identities that are linked to a specific user or server.

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因此，您还需要延长主服务器、故障转移服务器和代理的 X.509 证书的有效期。

Therefore you also need to renew the X.509 certificates for the primary server, the failover servers, and the agents.

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密钥存储库是存储服务器证书和密钥对的文件。

The keystore is the file in which the server's certificate and keypair are stored.

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