Docker registry login fails with “Certificate signed by unknown authority”

Question

I\'m am running a private docker registry on ubuntu using S3 for storage. I\'m having issues getting docker login/push/pull commands to work over SSL. I\'m using Nginx in fron

Answer 1

For RHEL hosts, you can add the CA cert to the PKI CA list on the client host:

cp docker-registry.crt /etc/pki/ca-trust/source/anchors/docker-registry.crt
update-ca-trust
systemctl restart docker

From https://www.happyassassin.net/2014/09/06/adding-your-freeipa-servers-ca-certificate-to-the-system-wide-trust-store-on-fedora-and-rhel/