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docker pull error x509 certificate signed by unknown authority

DreamCoder answered on June 3, 2022 Popularity 9/10 Helpfulness 2/10

answer docker pull error x509 certificate signed by unknown authority

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docker pull error x509 certificate signed by unknown authority

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/etc/docker/certs.d/my-registry.example.com:5000/ca.crt

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Source: stackoverflow.com

Tags: authority certificate docker-pull signed whatever x509

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Contributed on Apr 18 2023

DreamCoder

0 Answers Avg Quality 2/10

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docker pull x509: certificate signed by unknown authority

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first create an empty json file

cat << EOF > /etc/docker/daemon.json
{ }
EOF
than run the following to add certs

openssl s_client -showcerts -connect [registry_address]:[registry_port] < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/[registry_address]/ca.crt
works without restart

OR

import the cert to system like

save the cert to the file , like the command above (the port is crucial, no need for the protocol)

openssl s_client -showcerts -connect [registry_address]:[registry_port] < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ca.crt
copy it to /usr/local/share/ca-certificates/

sudo cp ca.crt /usr/local/share/ca-certificates/
run update-ca-certificates

sudo update-ca-certificates
restart docker !

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Source: stackoverflow.com

Tags: authority auth

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Contributed on Jun 03 2022

Sparkling Skunk

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docker pull error x509 certificate signed by unknown authority

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