A php-based Nagios compliant check for the popular Shelly IoT devices. This check should work with any nagios compliant monitoring system such as Icinga, Naemon, check_mk, Zabbix and others ...

Note: Currently only Shelly1 and Shelly2 are supported.

The check reads uptime, ram and file system usage and reports warning, if the defined threshold is reached.

php with php-curl module

a check command example: ./check_shelly -h=<shelly-ip> -u=shellyuser -p=shellypassword -w=90 -c=95

• -h (host) is mandatory
• -u (username) and -p (password) are optional, if the Shelly is protected via username / password
• -w and -c are optional warning /critical thresholds .. (default is 90 for warning, 95 for critical)

OK: shelly1-1D9ABA - Type: SHSW-1 (Uptime: 0 days, 16 hours, 5 minutes and 50 seconds) is healthy.

• add support for other Shelly devices
• generate perfdata output
• add monitoring for relay states (warn or critical, if relay state is off)