home-assistant.io/source/_components/sensor.cert_expiry.markdown

layout	title	description	date	sidebar	comments	sharing	footer	logo	ha_category	ha_release	ha_iot_class
page	Certificate Expiry	Instructions on how to set up HTTPS (SSL) certificate expiry sensors within Home Assistant.	2017-04-24 14:14	true	false	true	true	home-assistant.png	System Monitor	0.44	depends

The cert_expiry sensor fetches information from a configured URL and displays the certificate expiry in days.

To add the Certificate Expiry sensor to your installation, add these options to configuration.yaml file:

# Example configuration.yaml entry
sensor:
  - platform: cert_expiry
    host: home-assistant.io

Configuration variables:

• host (Required): The host FQDN (or IP) to retrieve certificate from.
• port (Optional): The port number where the server is running. Defaults to 443.
• name (Optional): The friendly name for the certificate.

Make sure that the URL exactly matches your endpoint or resource.