My certificate has inside:
X509v3 Subject Alternative Name:
DNS:flyingpiglet.run.place, DNS:*.flyingpiglet.run.place
flyingpiglet.run.place and ha.flyingpiglet.run.place resolve to the same ipv4/ipv6, but when accessing https://ha.flyingpiglet.run.place:8123/, browser claims the connection is not secure and the site certificate belongs to flyingpiglet.run.place.
What i did wrong?
Welcome to the Let's Encrypt Community! 
Your server isn't serving ZeroSSL's intermediate certificate along with your leaf certificate.
as @griffin pointed out, you need to serve the whole ca_bundle.
(https://help.zerossl.com/hc/en-us/articles/360058296114-Missing-Intermediate-Certificate)
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.