[Webmin] Let's encrypt certificates installation in your Webmin control panel

Valentine

Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a service provided by the Internet Security Research Group (ISRG).

In this tutorial, you will find out how you can benefit from these certificates by providing security for your Webmin websites.

The tutorial was prepared with our "Webmin 1.9 with CentOS 7" template and is meant to work on our self-managed virtual private servers.

0. Preliminary requirements:
"Webmin 1.9 with CentOS 7" template installed on the server;
Fully updates server software (yum update);
"Git" package installed (yum install git -y).

1. Downloading "Let's encrypt" client:
git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt


2. Installing the necessary Python module:
yum install python-argparse -y

3. Adding additional name server
For "Let's Encrypt" certificates to work properly we have to add "localhost" nameserver. We do so by going to "Webmin" control panel > "Networking" > "Network Configuration" > "Hostname and DNS Client" and adding "127.0.0.1" as additional name server:


4. Enabling SSL feature
Also for certificate function to be active for your virtual servers we have to enable it in the "Virtualmin" control panel". We have to open "System Settings" > "Features and Plugins" and after checking "SSL website" save settings:


5. Installing "Let's encrypt" certificate
For a new "Virtual server":
Open "Server Configuration" > "SSL Certificate" > "Let's Encrypt" and press button "Request Certificate":

For existing "Virtual server":

Before proceeding with the certificate installation we have to enable the "SSL website feature". Open "Edit Virtual Server" > "Enable features" check "SSL website enabled?" and save. Then proceed with the step above.

Pomica

"detail": "Error creating new cert :: too many certificates already issued for: time4vps.cloud"

is what i get when trying this method.

Valentine

Pomica said:

"detail": "Error creating new cert :: too many certificates already issued for: time4vps.cloud"

is what i get when trying this method.

Apparently our client have just issued too many certs on time4vps.cloud domain Let's Encrypt have a limit on that. You could use your own domain and issue certificate for it.

cintadewiamelia

Hi, i getting error 

Unfortunately, Let's Encrypt cannot be used on your system : The Python module argparse needed by the built-in Let's Encrypt client is not installed.

Operating System = Redhat Linux Fedora 12
Webmin version 1.860

i hope you know how to solve it. Thanks 

William

Hello,
as the error indicates, your server probably lacks the argparse module of Python. To install it, as mentioned in the information provided by Python, you should try the following commands:

python setup.py install

easy_install argparse

pip install argparse

For more information you can check the Python page.