zabbix docker volume monitoring error

[albert.manukyan]

Hi All,

I have linux which is being monitored via zabbix, I do have docker on it and have devicemapper which is mounting docker volumes on directors, sooo as zabbix has discovery rule and mone of them is mounted points , it is showing at first that it is able to see volume, and after it is giving an error.

Any suggestions how can I fix this?

[albert.manukyan]

1) for few minutes its OK

OK

Mounted filesystem discovery: Free disk space is less than 20% on volume /var/lib/docker/devicemapper/mnt/0a33cede53619af199c1dab73077356fa898bce69f36a823e7 7216e4b6243b86

{test_host:vfs.fs.size[/var/lib/docker/devicemapper/mnt/0a33cede53619af199c1dab73077356fa898bce69f36a823e7 7216e4b6243b86,pfree].last(0)}<20

Enabled

2) after 2 or 3 minutes its dying and showing below error.

Cannot evaluate expression: "Cannot evaluate function "test_host:vfs.fs.size[/var/lib/docker/devicemapper/mnt/0a33cede53619af199c1dab73077356fa898bce69f36a823e7 7216e4b6243b86,pfree].last(0)": item is not supported.".