Monitor ramdisk free space?

[aschild]

Hello,

how can I monitor the free "disk" space of a ram disk under linux?
It is not "deteced"/monitore, neither via the 2.4.2 Agent, nor via SNMP.

A df shows these file systems:

Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 6523904 1446020 3689516 29% /
/dev/sda1 6523904 1446020 3689516 29% /
/dev/sda2 730263 33129 658171 5% /boot
tmpfs 94208 9800 84408 11% /ram

André

[jan.garaj]

1.) Probably it's discovered, check output from:

user@zabbix_server:~$ zabbix_get -s monitored-device -k vfs.fs.discovery

2.) But then is excluded, because it doesn't match regexp "File systems for discovery" (Administration->General->Regular expressions). It's tmpfs, so allow also tmpfs:

^(btrfs|ext2|ext3|ext4|jfs|reiser|xfs|ffs|ufs|jfs|jfs2|vxfs|hfs|ntfs|fat32|zfs|tmpfs)$

3.) When you allow tmpfs, then a lot of filesystems can be discovered and monitored (e.g. /dev, /dev/shm, ...). If you want to exclude them, then you must play (create, edit) with regular expressions and autodiscovery rules (Template OS Linux->Discovery rules). It's just regexps ;-D

Have fun.

[aschild]

Thanks.

That was the hint I needed.

I did not modify the vfs discovery rules, since the ram disk is mounted on several points in the filesystem.

So I simply did add new datapoints with vfs.fs.size[/ram], vfs.fs.size[/ram,pfree] etc. , together with the triggers and graphs.

Thanks

André