How to Monitor PAN-OS Disk Usage with SNMP
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Created On 03/30/21 16:04 PM - Last Modified 12/06/22 22:01 PM
Objective
To Monitor disk partition usage of a PAN-OS Firewall
Environment
- Palo Alto Firewall or Panorama
- Supported PAN-OS
- SNMP
Procedure
Use the the hrStorage OID table in the Host-Resources MIB
OID Overview
|
Item
|
Name
|
OID
|
Source MIB
|
Description
|
|---|---|---|---|---|
|
Partition name
|
hrStorageDescr
|
1.3.6.1.2.1.25.2.3.1.3
|
HOST-RESOURCES-MIB
|
What is the name of partition
|
|
Allocation Units
|
hrStorageAllocationUnits
|
1.3.6.1.2.1.25.2.3.1.4
|
HOST-RESOURCES-MIB
|
What units are these reported in
1024 = KB (KiloByte) |
|
Partition Size |
hrStorageSize
|
1.3.6.1.2.1.25.2.3.1.5
|
HOST-RESOURCES-MIB
|
Size of partition (in KB) |
|
Partition Used
|
hrStorageUsed
|
1.3.6.1.2.1.25.2.3.1.6
|
HOST-RESOURCES-MIB
|
Used storage (in KB)
|
Output from on SNMP Walk:
hrStorageDescr 1.3.6.1.2.1.25.2.3.1.3.(index-number) = Type: Value
iso.3.6.1.2.1.25.2.3.1.3.1040 = STRING: "Slot-1 Management Config Partition"
iso.3.6.1.2.1.25.2.3.1.3.1041 = STRING: "Slot-1 Management Log Partition"
iso.3.6.1.2.1.25.2.3.1.3.1042 = STRING: "Slot-1 Management Root Partition"
hrStorageAllocationUnits 1.3.6.1.2.1.25.2.3.1.4.(index-number) = Type: Value
iso.3.6.1.2.1.25.2.3.1.4.1040 = INTEGER: 1024
iso.3.6.1.2.1.25.2.3.1.4.1041 = INTEGER: 1024
iso.3.6.1.2.1.25.2.3.1.4.1042 = INTEGER: 1024
hrStorageSize 1.3.6.1.2.1.25.2.3.1.5.(index-number) = Type: Value
iso.3.6.1.2.1.25.2.3.1.5.1040 = INTEGER: 16644968
iso.3.6.1.2.1.25.2.3.1.5.1041 = INTEGER: 21828860
iso.3.6.1.2.1.25.2.3.1.5.1042 = INTEGER: 7282104
hrStorageUsed 1.3.6.1.2.1.25.2.3.1.6.(index-number) = Type: Value
iso.3.6.1.2.1.25.2.3.1.6.1040 = INTEGER: 2441732
iso.3.6.1.2.1.25.2.3.1.6.1041 = INTEGER: 387632
iso.3.6.1.2.1.25.2.3.1.6.1042 = INTEGER: 3411416
Putting it together:
The Management Config Partition used index number 1040. Here is how we interpret the output:| SNMP Walk Output | Description |
| iso.3.6.1.2.1.25.2.3.1.3.1040 = STRING: "Slot-1 Management Config Partition" | The name of the partition is "Management Config Partition" |
| iso.3.6.1.2.1.25.2.3.1.4.1040 = INTEGER: 1024 | The allocation is 1024. A unit of 1024 is a KiloByte (KB) |
| iso.3.6.1.2.1.25.2.3.1.5.1040 = INTEGER: 16644968 | There is 16644968KB of space in this partition, or 16.64GB |
| iso.3.6.1.2.1.25.2.3.1.6.1040 = INTEGER: 2441732 | There is 2441732KB of used space in this partition, or 2.44GB |
Compare SNMP results to show system disk space output on firewall?
admin@fw> show system disk-space
Filesystem Size Used Avail Use% Mounted on
/dev/root 7.0G 3.3G 3.4G 50% /
none 7.9G 76K 7.9G 1% /dev
/dev/sda5 16G 2.4G 13G 16% /opt/pancfg <=====
/dev/sda6 8.0G 2.6G 5.0G 34% /opt/panrepo
tmpfs 4.8G 4.1G 819M 84% /dev/shm
/dev/sda8 21G 379M 20G 2% /opt/panlogs
Additional Information
These are the OIDs commonly used by your favorite SNMP monitoring software.