check_ncpa disk/mount

[hbouma]

I have an NFS mount on a Red Hat box that I am attempting to monitor via the NCPA agent. I can see all the other mounts from the GUI, but not this one. Mount is /XXX/YYY

I can run the following curl command and get a response:

Code: Select all

curl -k -vvv https://SERVER:5693/api/disk/mount/%7CXXX%7CYYY/?token=TOKEN&warning=80&critical=90&check=1

Response is:

{
"|XXX|YYY": {
"fstype": "nfs",
"opts": "INFORMATION",
"device_name": [
"INFORMATION"
]
}

I see no disk usage information in the response. Am I not able to monitor disk usage on a mount?

[mbellerue]

In your /usr/local/ncpa/etc/ncpa.cfg file there is a setting labeled exclude_fs_types. One of the entries in there should be nfs. Just remove that entry, and then run systemctl restart ncpa_listener.service. Then try your check again.

[hbouma]

That is already done, and we can monitor other NFS mounts on the server, just not this one.

Although, the other NFS mounts allow us to monitor them as disk/logical. This one will only show up if we use disk/mount in the command or API call.

[lmiltchev]

The disk/mount API doesn't show the disk usage. You will have to use disk/logical...

Example:

Code: Select all

[root@localhost ~]# mount
rootfs on / type rootfs (rw)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
devtmpfs on /dev type devtmpfs (rw,relatime,size=4088684k,nr_inodes=1022171,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,relatime)
/dev/sda1 on / type ext4 (rw,noatime,barrier=1,data=ordered)
/proc/bus/usb on /proc/bus/usb type usbfs (rw,relatime)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
192.168.x.x:/mnt/backup on /mnt/backup type nfs4 (rw,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.x.x,minorversion=0,local_lock=none,addr=192.168.x.x)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)

[root@localhost ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                 99G   39G   59G  40% /
devtmpfs              3.9G  144K  3.9G   1% /dev
tmpfs                 4.0G     0  4.0G   0% /dev/shm
/dev/sda1              99G   39G   59G  40% /
192.168.x.x:/mnt/backup
                      491G   84G  382G  18% /mnt/backup

example01.PNG

[hbouma]

I would love to, but the check doesn't work when using disk/logical:

Code: Select all

   
curl -k -vvv https://SERVER:5693/api/disk/logical/%7CXXX%7CYYY/?token=TOKEN&warning=80&critical=90&check=1

"error": {
        "node": "|XXX|YYY",
        "path": "/api/disk/logical/|XXX|YYY/",
        "message": "The node requested does not exist. You may be trying to access the '|' node.",
        "code": 100

[lmiltchev]

It works for me both ways - when using curl or check_ncpa.py...

Code: Select all

[root@main-nagios-xi libexec]# curl -k "https://x.x.x.x:5693/api/disk/logical/%7Cmnt%7Cbackup?token=mytoken&warning=80&critical=90&check=1"
{
    "perfdata": "'used_percent'=17.90%;80;90;",
    "returncode": 0,
    "stdout": "OK: Used disk space was 17.90 % (Used: 83.35 GiB, Free: 381.70 GiB, Total: 489.89 GiB) | 'used'=83.35GiB;392;441; 'free'=381.70GiB;392;441; 'total'=489.89GiB;392;441;"
}

[root@main-nagios-xi libexec]#./check_ncpa.py -H x.x.x.x -t 'mytoken' -M 'disk/logical/|mnt|backup' -w 80 -c 90
OK: Used disk space was 17.90 % (Used: 83.34 GiB, Free: 381.70 GiB, Total: 489.89 GiB) | 'used'=83.34GiB;392;441; 'free'=381.70GiB;392;441; 'total'=489.89GiB;392;441;

What is the version of the NCPA agent that you are currently using? Can you show us the actual mount (path)? You can PM me the info.

[hbouma]

PM Sent

[lmiltchev]

Replied via PM.

[hbouma]

The issue is now fixed. The Nagios user didn't have correct permissions to the NFS mount.