Not able to login in docker private repositry

Question

I configured insecure registry by self singed certificate.After providing user name and password , getting error message as " Error response from daemon: Get https://ip address:5000/v1/users/: x509: certificate signed by unknown authority".

Did you also add the certificate to the daemon? See here for details: docs.docker.com/docker-trusted-registry/configure/… — Henry

Vikas Jindal Vikas Jindal · Accepted Answer · 2016-08-31T09:00:54

Execute following steps to docker registry with private certificates:

Generate private SSL Certificate with following command. This will create certs folder with two file domain.crt, domain.key
```
openssl req -newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key  -x509 -days 365 -out certs/domain.crt
```

Start docker registry with following command:

docker run -d -p 5000:5000 --restart=always --name registry \
-v `pwd`/certs:/certs \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \
-e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \
registry:2

On another machine where you want to pull the images, copy
```
certs/domain.crt
```
file to
```
/etc/docker/certs.d/<<DockerRegistryServerHostname>>:<<DockerRegistryPort>>/ca.crt
```
Make sure the name of certificate file is ca.crt (not domain.crt).
For example, if docker registry IP address is docker.registry and port is 5000 then folder name will be
```
/etc/docker/certs.d/docker.registry:5000/
```
Now run docker pull command. You should not face any issue.

Not able to login in docker private repositry

2 Answers