Using SSL to protect connections to Quay Enterprise
This document assumes you have deployed Quay Enterprise as a single container.
Quay Enterprise will be configured with a self-signed certificate. A Certificate Authority (CA) is required.
Create a CA and sign a certificate
First, create a root CA:
$ openssl genrsa -out rootCA.key 2048
$ openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 1024 -out rootCA.pem
Next, create the key and certificate that will be signed by the CA:
$ openssl genrsa -out ssl.key 2048
When creating the ssl.csr file it is important that the hostname of the server where QE is installed is used as the Common Name or QE will reject the configuration. In this demo environment QE is currently installed at reg.example.com
$ openssl req -new -key ssl.key -out ssl.csr
-----
Country Name (2 letter code) [XX]:US
State or Province Name (full name) []:California
Locality Name (eg, city) [Default City]:SF
Organization Name (eg, company) [Default Company Ltd]:Demo Quay
Organizational Unit Name (eg, section) []:Demo Quay
Common Name (eg, your name or your server's hostname) []:reg.example.com
Email Address []:support@quay.io
Sign the certificate with the CA:
$ openssl x509 -req -in ssl.csr -CA rootCA.pem -CAkey rootCA.key -CAcreateserial -out ssl.cert -days 500 -sha256
Signature ok
subject=/C=US/ST=California/L=SF/O=Demo Quay/OU=Demo Quay/CN=reg.example.com/emailAddress=support@quay.io
Getting CA Private Key
Configuring Quay Enterprise to use the new certificate
The next step can be accomplished either in the QE superuser panel, or from the terminal.
To configure with the superuser GUI in QE
Set the Server Hostname to the appropriate value and check the Enable SSL:
Upload the ssl.key and ssl.cert files.
Save the configuration. QE will automatically validate the SSL certificate.
Restart the container:
To configure with the command line
By not using the web interface the configuration checking mechanism built into QE is unavailable. It is suggested to use the web interface if possible.
Copy the ssl.key and ssl.cert into the specified config directory.
Note: The certificate/key files must be named ssl.key and ssl.cert
$ ls
ssl.cert ssl.key
$ scp ssl.* core@10.7.8.117:/home/core/config/
core@lan-lab-7 ~ $ ls config/
config.yaml ssl.cert ssl.key
Modify the PREFERRED_URL_SCHEME: parameter in config.yaml from http to https
PREFERRED_URL_SCHEME: https
Restart the QE container:
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
eaf45a4aa12d quay.io/quay/redis "/usr/bin/redis-serve" 22 hours ago Up 22 hours 0.0.0.0:6379->6379/tcp dreamy_ramanujan
cbe7b0fa39d8 quay.io/coreos/registry "/sbin/my_init" 22 hours ago Up About an hour 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 8443/tcp fervent_ptolemy
705fe7311940 mysql:5.7 "/entrypoint.sh mysql" 23 hours ago Up 22 hours 0.0.0.0:3306->3306/tcp mysql
$ docker restart cbe7b0fa39d8
Test the secure connection
Confirm the configuration by visiting the URL from a browser: https://reg.example.com/
"Your Connection is not secure" means the CA is not officially and publicly trusted, but confirms that SSL is functioning properly. Check Google for how to configure your operating system and browser to trust a certificate signed by your own CA.
Configuring Docker to Trust a Certificate Authority
Docker requires that custom certs be installed to /etc/docker/certs.d/ under a directory with the same name as the hostname private registry. It is also required for the cert to be called ca.crt
Copying the rootCA file.
$ cp tmp/rootCA.pem /etc/docker/certs.d/reg.example.com/ca.crt`
After this step is completed docker login should authenticate successfully and pushing to the repository should succeed.
$ sudo docker push reg.example.com/kbrwn/hello
The push refers to a repository [reg.example.com/kbrwn/hello]
5f70bf18a086: Layer already exists
e493e9cb9dac: Pushed
1770dbc4af14: Pushed
a7bb4eb71da7: Pushed
9fad7adcbd46: Pushed
2cec07a74a9f: Pushed
f342e0a3e445: Pushed
b12f995330bb: Pushed
2016366cdd69: Pushed
a930437ab3a5: Pushed
15eb0f73cd14: Pushed
latest: digest: sha256:c24be6d92b0a4e2bb8a8cc7c9bd044278d6abdf31534729b1660a485b1cd315c size: 7864
