33 lines
908 B
Markdown
33 lines
908 B
Markdown
---
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layout: page
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title: "Certificate Expiry"
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description: "Track HTTPS (SSL) certificate expiry as HomeAssistant sensor."
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date: 2017-04-24 14:14
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: home-assistant.png
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ha_category: Sensor
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ha_release: 0.43
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---
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This sensor fetches information from a configured URL and displays the certificate expiry (in days). The `host` and `port` must lead to a working SSL website.
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To add the Certificate Expiry sensor to your installation, add these options to `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: cert_expiry
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host: home-assistant.io
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```
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Configuration variables:
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- **host** (*Required*): The host FQDN (or IP) to retrieve certificate from
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- **port** array (*Optional*): Port number (default **443**).
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<p class='note warning'>
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Make sure that the URL exactly matches your endpoint or resource.
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</p>
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