Certificates

SSL certificate storage with Lets Encrypt support

Certificates are used to store SSL certificates that can then be used by the node web server or shared with instances and pods. Lets Encrypt certificates are available with web and DNS TXT record verification. For DNS verification an API key with AWS, Cloudflare or Oracle Cloud will be needed to automatically add DNS TXT records. Wildcard domains are supported by entering a domain such as *.cloud.pritunl.com typically cloud.pritunl.com would also be added to support both the top domain and sub-domains. Wildcard Lets Encrypt certificates require DNS TXT verification.

Pod Configuration

Certificates are shared with pods by including it in the spec as shown below. The certificate organization must match the pods organization.

certificates:
    - +/certificate/cloud-pritunl-com

Then this certificate can be retrieved from the pod using the command below.

[cloud@dev-unit ~]$ sudo pci get +/certificate/cloud-pritunl-com/certificate
-----BEGIN CERTIFICATE-----
MIIDXTCCAkWgAwIBAgIJAJRTChD4Ptj3MA0GCSqGSIb3DQEBCwUAMEUxCzAJBgNV
BAYTAlVTMQswCQYDVQQIDAJDQTESMBAGA1UECgwJRXhhbXBsZSBJbmMxFTATBgNV
BAMMDCouZXhhbXBsZS5jb20wHhcNMjUwODAzMDAwMDAwWhcNMjYwODAzMDAwMDAw
-----END CERTIFICATE-----
[cloud@dev-unit ~]$ sudo pci get +/certificate/cloud-pritunl-com/key
-----BEGIN RSA PRIVATE KEY-----
MIIEpAIBAAKCAQEAvyp5uHQF9WZB9gLKm1XEFBoF+SGzJGLmj4AcVavZX+UNboZ3
+9WDUvmcI1d2hEo5XzG0i4uF4HgxE6J1JUzEKoY2mHc0ovwO3GfU9BqduEBrUM6C
oxGBl7U6FZzEq+Tnrgd+ik3tLHZyoVTIiA3yPYd8psNmfFslVJ/c64rhEpD/4K/h
-----END RSA PRIVATE KEY-----

Certificates can be added or modified and will be updated on the IMDS system within 1-5 seconds. This allows creating scripts that regularly pull the certificate from the IMDS service to keep a servers SSL certificates updated.