NewFileRenewer returns a new certificate renewer that uses given CA cert and key for generating new certificates.

NewManager return a new certificate renewal manager ready for handling certificates in the cluster.

CAExpirationHandler defines required info for CA expiration check.

CertificateRenewHandler defines required info for renewing a certificate.

ExpirationInfo defines expiration info for a certificate.

FileRenewer define a certificate renewer implementation that uses given CA cert and key for generating new certificates.

Manager can be used to coordinate certificate renewal and related processes, like CSR generation or checking certificate expiration.