NCP Agent not detecting XFS File System

[Sampath.Basireddy]

This is very strange. fstype & device name commands works just fine, but used_percent fails. What am I doing wrong, am confused.

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[root@ nagios1 ~]# /usr/local/nagios/libexec/check_ncpa.py -H xx.xx.xx.xxx -t <Token> -P 5693 -M 'disk/mount/|var|lib|ceph|osd|ceph-11/fstype'
OK: Fstype was ['xfs']

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[root@ nagios1 ~]# /usr/local/nagios/libexec/check_ncpa.py -H xx.xx.xx.xxx -t <Token> -P 5693 -M 'disk/mount/|var|lib|ceph|osd|ceph-11/device_name'
OK: Device_name was ['/dev/sdw3']

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[root@ nagios1 ~]# /usr/local/nagios/libexec/check_ncpa.py -H xx.xx.xx.xxx -t <Token> -P 5693 -M 'disk/mount/|var|lib|ceph|osd|ceph-11/used_percentage' -c 90 -w 85
UNKNOWN: The node (used_percentage) requested does not exist.

[vtrac]

Hi,
If you follow the "curl" outputs file, it will let you know where "use_percent" is in the tree.

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        "logical": {
            "|boot": {
                "used_percent": [
                    40.8, 
                    "%"
                ], 

As you can see from above, "used_percent" belong to "disk/logical/|boot/used_percent" for the "|boot" filesystem.

Your earlier command:
/usr/local/nagios/libexec/check_ncpa.py -H xx.xx.xx.xxx -t <Token> -P 5693 -M 'disk/mount/|var|lib|ceph|osd|ceph-11/used_percentage' -c 90 -w 85

There is not "used_percent" for "|var|lib|ceph|osd|ceph-11".

The only available option for "|var|lib|ceph|osd|ceph-63" are "fstype", "opts" and "device_name" (see below):

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    "disk": {
        "mount": {
            "|var|lib|ceph|osd|ceph-63": {
                "fstype": "xfs", 
                "opts": "rw,noatime,attr2,inode64,noquota", 
                "device_name": [
                    "/dev/sdd3"
                ]
            }, 

Based on the output of "curl", "used_percent" are only available for "|boot" and "|" (please see below):

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disk:
        "logical": {
            "|boot": {
                "used_percent": [
                    40.8, 
                    "%"
                ], 
                "used": [
                    0.07, 
                    "GiB"
                ], 
                "inodes_used": [
                    295, 
                    "inodes"
                ], 
                "free": [
                    0.11, 
                    "GiB"
                ], 
                "device_name": [
                    "/dev/sda3"
                ], 
                "inodes_free": [
                    16089, 
                    "inodes"
                ], 
                "inodes": [
                    16384, 
                    "inodes"
                ], 
                "fstype": "ext2", 
                "total": [
                    0.19, 
                    "GiB"
                ], 
                "opts": "rw,relatime", 
                "inodes_used_percent": [
                    2.0, 
                    "%"
                ]
            }, 
            "|": {
                "used_percent": [
                    17.1, 
                    "%"
                ], 
                "used": [
                    7.95, 
                    "GiB"
                ], 
                "inodes_used": [
                    135381, 
                    "inodes"
                ], 
                "free": [
                    38.62, 
                    "GiB"
                ], 
                "device_name": [
                    "/dev/mapper/os-root"
                ], 
                "inodes_free": [
                    3141419, 
                    "inodes"
                ], 
                "inodes": [
                    3276800, 
                    "inodes"
                ], 
                "fstype": "ext4", 
                "total": [
                    49.08, 
                    "GiB"
                ], 
                "opts": "rw,relatime,errors=panic,stripe=32411,data=ordered", 
                "inodes_used_percent": [
                    5.0, 
                    "%"
                ]
            }
        }, 

From the outputs of "curl" .... you must follow the tree (json) structure down.
Anything listed there is what you will get ....

You can search "Nagios Exchange" page for other module(s) that might fit your needs better.
https://exchange.nagios.org/


Best Regards,
Vinh

[vtrac]

Here's the curl command again, run this on the system you want to check .... please do one at a time.

curl -k 'https://x.x.x.x:5693/api/disk/?token=yourToken'

Once you get the output .... follow the json tree structure from top down.

NOTE: You can only check with what is / are listed.

[Sampath.Basireddy]

So, that means I cannot monitor XFS disk usage with NCPA, correct?

Is this a limitation with the NCPA? Are there any other plugins that I can use to monitor XFS or should I write one myself?

[vtrac]

Hi,
Hope you are having a good day!!

Based on the "curl-output.txt" file, those "xfs" file are under "mount", so you can not check "used_percent".

"used_percent" only available for "/boot" and "/", based on the "curl-output.txt".

You can try searching the Nagios Exchange web site and see if anything that might fit your need:
https://exchange.nagios.org/


Best Regards,
Vinh