The browsers report that the TLS certificate of the site is not no longer valid….
Probable causes
- Automatic failure renewal….
- DNS/HTTP cannot be validated….
- Improper certificate configuration….
- Certificate installed on the wrong service…
Verifications.
- Check dates — Check the certificate actually presented by the server….
- Control renewal…. — check out the logs, encrypt/ACME or the host interface…
- Check DNS…. — The domain must point correctly to the service expected….
- Check all nodes…. — In a cluster or proxy, all frontals must present the right certificate….
Solutions…
- Renew the certificate…
- Correct the ACME challenge….
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