I have now received the instructions on how to reconfigure all servers to use one Let's Encrypt certificate.

The changes involve some changes through the web interface of Pair and might also involve some indirect changes to the DNS. I expect the changes to be complete within the next hour and the propagation of the changes within the next 24 hours.

After that, I expect that all webservers will serve the same (Let's Encrypt) certificate and will automatically renew through Pairs automatic process.

Update: The change was 50% successful:

• OK The *.pairsite.com certificate is not served anymore from
• OK A perlmonks.com and www.perlmonks.com certificate is now served from 209.197.123.153.
• NOT OK: A perlmonks.net and www.perlmonks.net certificate is now served from 209.197.123.153.
• NOT OK: A perlmonks.org and www.perlmonks.org certificate is now served from 209.197.123.153.

This will likely need (repeated?) manual intervention from Pair support, who have been very supportive and good so far, so I hope that we can resolve even this issue.

The two certificates served now are:

##### Certificate #####
Issuer: /C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
Subject: /CN=perlmonks.com
Subject Alt Names: 2: perlmonks.com 2: www.perlmonks.com
### Served by:
209.197.123.153 css.perlmonks.com
209.197.123.153 css.perlmonks.net
209.197.123.153 css.perlmonks.org
209.197.123.153 perlmonks.com
209.197.123.153 perlmonks.net
209.197.123.153 perlmonks.org
209.197.123.153 perlmonks.pairsite.com
209.197.123.153 www.perlmonks.com
209.197.123.153 www.perlmonks.net
209.197.123.153 www.perlmonks.org

##### Certificate #####
Issuer: /C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
Subject: /CN=perlmonks.org
Subject Alt Names: 2: css.perlmonks.com 2: css.perlmonks.net 2: css.pe
+rlmonks.or
g 2: perlmonks.com 2: perlmonks.net 2: perlmonks.org 2: www.perlmonks.
+com 2: www
.perlmonks.net 2: www.perlmonks.org
  216.92.34.251 css.perlmonks.com
    66.39.54.27 css.perlmonks.com
  216.92.34.251 css.perlmonks.net
    66.39.54.27 css.perlmonks.net
  216.92.34.251 css.perlmonks.org
    66.39.54.27 css.perlmonks.org
  216.92.34.251 perlmonks.com
    66.39.54.27 perlmonks.com
  216.92.34.251 perlmonks.net
    66.39.54.27 perlmonks.net
  216.92.34.251 perlmonks.org
    66.39.54.27 perlmonks.org
  216.92.34.251 www.perlmonks.com
    66.39.54.27 www.perlmonks.com
  216.92.34.251 www.perlmonks.net
    66.39.54.27 www.perlmonks.net
  216.92.34.251 www.perlmonks.org
    66.39.54.27 www.perlmonks.org
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