urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:897)'),))

schoen · December 7, 2021, 6:51am

Are there other certificate-related packages that could be updated on your system? It does seem likely that the problem has to do with your trust store.

Here is a recent solution on CentOS related to this which I hadn't seen before:

If all of your certificate-related packages are already up to date, you might want to look at the solution in that thread.