tolaleng / jota-cert-checker

Check SSL certificate expiration date of a list of sites.

jota-cert-checker

Description

A script to check SSL certificate expiration date of a list of sites.

The script can be launched in two modes:

• Terminal: Output is displayed in your terminal
• HTML: the script generates an HTML file (called certs_check.html by default) that can be opened with your browser.

Optionally, you can also embed the HTML and send it via:

• email: you will need to install mutt if you use this option
• slack: install imgkit via pip and wkhtmltopdf using your distribution package manager (in RHEL/CentOS you will need to enable EPEL first) Don't forget to configure you Slack Token the slack_token variable of jota-cert-checker.sh script

Usage

For example, we have the following file called sitelist that contains a list of domains with the HTTPS port, one domain per line:

linux.com:443
kernel.org:443
gnu.org:443
debian.org:443
ubuntu.com:443
github.com:443
google.es:443
redhat.com:443
superuser.com:443
youtube.com:443
stackoverflow.com:443
stackexchange.com:443
wikipedia.org:443
python.org:443
codecademy.com:443
packtpub.com:443
reddit.com:443
mysql.com:443

In the following cases I modified the variables warning_days and alert_days for sample purposes.

To launch the script in terminal mode:

./jota-cert-checker.sh -f sitelist -o terminal

We get the following output in our terminal:

In HTML mode:

./jota-cert-checker.sh -f sitelist -o html

We get the following output:

In HTML mode and sending the result to an email:

./jota-cert-checker.sh -f sitelist -o html -m [email protected]

Checking our email we will see:

Also in HTML mode and sending the result to a slack channel:

./jota-cert-checker.sh -f sitelist -o html -s my_slack_channel