Never write your own script again just to format data, if you wanna use new source for zabbix low level discovery. With zabbix_jsonify you can turn nearly every standard output to zabbix-compliant json. Simply by piping your command to zabbix_jsonify, you have your LLD ready and you can save a lot of time without debugging "Value should be a JSON object" error messages.
usage: zabbix_jsonify [-h] [--delimiter DELIMITER] keyname [keyname ...]
Converts lines from standard input to JSON for Zabbix discovery.
positional arguments:
keyname The {#KEYNAME} that will be returned.
optional arguments:
-h, --help show this help message and exit
--delimiter DELIMITER
Delimiter of columns. Default is space
root@localhost:~# cat /proc/mounts | zabbix_jsonify FSTYPE FSNAME
{"data":
[
{
"{#FSTYPE}": "sysfs",
"{#FSNAME}": "/sys"
},
...
{
"{#FSTYPE}": "tmpfs",
"{#FSNAME}": "/run/user/10067"
}
]
}
root@localhost:~# cat /etc/zabbix/zabbix_agentd.d/userparameter_varnish.conf
UserParameter=varnish.backend.discovery,echo "backend.list" | sudo varnishadm | awk 'NR>2 {print substr($$1,6)}' | zabbix_jsonify VARNISHBACKEND
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