NCPA Wizard: Can't Monitor Disk Metrics

[juana]

Hello,

I installed the NCPA client (ncpa-head.el6.x86_64.rpm) on my RHEL6 box. In a nutshell:

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cd /tmp/
wget http://assets.nagios.com/downloads/ncpa/ncpa-head.el6.x86_64.rpm
rpm -ivh --nomd5 --nodeps ncpa-head.el6.x86_64.rpm 
vi  /usr/local/ncpa/etc/ncpa.cfg 
/etc/init.d/ncpa_listener restart

In Nagios XI, I have the NCPA Agent Monitoring Wizard installed. When I run the wizard, Disk Metrics cannot be configured. I tried reinstalling the NCPA Agent (System Extensions -> Manage Config Wizards and reuploaded ncpa.zip), but no changes.

How can I monitor Disk Metrics via NCPA?

Thank you in advance,

Juana

[slansing]

Hmm, this might be an issue with what the agent is reporting back to the wizard when you contact it via the address/token you provided in step 2. Have you been able to successfully monitor these metrics with other remote hosts using the NCPA agent? Or is this the first one you tried.

[juana]

This is the first Linux I've tried. I know that Disk Metrics are being reported back via NCPA client but for Windows server.

[lmiltchev]

Can you see the disk live states, from the GUI?

[url]https://<agent's%20IP>:5693/api/?token=<token>[/url]

Can you run the following command on the Nagios server and show us the output?

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curl -vvv --insecure "https://<agent's IP>:5693/api/disk?token=<token>"

[juana]

Here's the https://<agent's%20IP>:5693/api/?token=<token> output:

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* About to connect() to xxxxx port 5693 (#0)
*   Trying xxxxxxx... connected
* Connected to xxxxxxx (xxxxxx) port 5693 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
* warning: ignoring value of ssl.verifyhost
* skipping SSL peer certificate verification
* SSL connection using TLS_RSA_WITH_AES_256_CBC_SHA
* Server certificate:
* 	subject: O=Dummy Certificate,CN=*
* 	start date: Feb 05 01:48:44 2014 GMT
* 	expire date: Feb 05 01:48:44 2015 GMT
* 	common name: *
* 	issuer: O=Self-Signed,CN=Untrusted Authority
> GET /api/disk?token=xxxxxxxxxxxxxxxxx HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.3.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: xxxxxxxxxxu:5693
> Accept: */*
> 
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Content-Type: application/json
< Content-Length: 2831
< Server: Werkzeug/0.9.4 Python/2.6.6
< Date: Wed, 12 Feb 2014 23:59:20 GMT
< 
{
  "value": {
    "disk": {
      "logical": {
        "|": {
          "device_name": "/dev/mapper/vg_parallel-LogVol01", 
          "free": [
            105576898560, 
            "b"
          ], 
          "total_size": [
            115329425408, 
            "b"
          ], 
          "used": [
            3894132736, 
            "b"
          ], 
          "used_percent": [
            3.3999999999999999, 
            "%"
          ]
        }, 
        "|boot": {
          "device_name": "/dev/sda1", 
          "free": [
            882720768, 
            "b"
          ], 
          "total_size": [
            1056858112, 
            "b"
          ], 
          "used": [
            120451072, 
            "b"
          ], 
          "used_percent": [
            11.4, 
            "%"
          ]
        }
      }, 
      "phyical": {
        "dm-0": {
          "read_bytes": [
            935756800, 
            "b"
          ], 
          "read_count": [
            27928, 
            "c"
          ], 
          "read_time": [
            40034, 
            "ms"
          ], 
          "write_bytes": [
            4589629440, 
            "b"
          ], 
          "write_count": [
            1120754, 
            "c"
          ], 
          "write_time": [
            798844, 
            "ms"
          ]
        }, 
        "dm-1": {
          "read_bytes": [
            1564672, 
            "b"
          ], 
          "read_count": [
            382, 
            "c"
          ], 
          "read_time": [
            386, 
            "ms"
          ], 
          "write_bytes": [
            0, 
            "b"
          ], 
          "write_count": [
            0, 
            "c"
          ], 
          "write_time": [
            0, 
            "ms"
          ]
        }, 
        "sda1": {
          "read_bytes": [
            6620160, 
            "b"
          ], 
          "read_count": [
            628, 
            "c"
          ], 
          "read_time": [
            129, 
            "ms"
          ], 
          "write_bytes": [
            5263360, 
            "b"
          ], 
          "write_count": [
            36, 
            "c"
          ], 
          "write_time": [
            156, 
            "ms"
          ]
        }, 
        "sda2": {
          "read_bytes": [
            937837568, 
            "b"
          ], 
          "read_count": [
            24463, 
            "c"
          ], 
          "read_time": [
            26792, 
            "ms"
          ], 
          "write_bytes": [
            4589629440, 
            "b"
          ], 
          "write_count": [
            419290, 
            "c"
          ], 
          "write_time": [
            229519, 
            "ms"
          ]
        }
      }
    }
  }
* Closing connection #0

[lmiltchev]

Go to the CCM->Services-><your disk check service>->Modify

and place in the $ARG1$ field something like this:

for /

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-t '<token>' -P 5693 -M 'disk/logical/|/used_percent' -w 80 -c 90

for /boot

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-t '<token>' -P 5693 -M 'disk/logical/|boot/used_percent' -w 80 -c 90

...etc.

See if this is going to work.