I just remembered that a trust root for Let’s Encrypt expired in September 2021 and caused issues for some people; maybe devices without the appropriate updates would have problems with the new mirrors for that reason.
# curl https://cloud-images.ubuntu.com/releases/streams/v1/index.json -o /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 27438 100 27438 0 0 25796 0 0:00:01 0:00:01 --:--:-- 25811
# curl https://sgp1lxdmirror01.do.letsbuildthe.cloud/releases/streams/v1/index.json -o /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (60) SSL certificate problem: unable to get local issuer certificate
More details here: https://curl.se/docs/sslcerts.html
curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
still getting ssl certificate problem at mirorr site…
Thanks for everyone to confirm!
After investigations on my side, mirror site “sgp1lxdmirror01.do.letsbuildthe.cloud” didn’t work on any nodes inside of our firewall. That site matched in our firewall rules.
We work this out. it’s perfectly fine for now. Thanks again.