bityard Blog

2017-10-01 // Check_MK Monitoring - HPE Virtual Connect Fibre Channel Modules

This article provides patches for the standard Check_MK distribution in order to add support for the monitoring of HPE Virtual Connect Fibre Channel Modules.

Out of the box, there is currently no monitoring support for HPE Virtual Connect Fibre Channel Modules in the standard Check_MK distribution. Those modules, like e.g. the HPE Virtual Connect 8Gb 20-port Fibre Channel Module, are used in HPE c-Class BladeSystem to provide Fibre Channel connectivity for the individual server blades. Fortunately the modules provide status and performance data via the standard SNMP FIBRE-CHANNEL-FE-MIB defined in RFC 2837 as well as its successor, the SNMP FCMGMT-MIB defined in RFC 4044. Those two SNMP MIBs are already covered by the checks qlogic_fcport, qlogic_sanbox and qlogic_sanbox_fabric_element, which are part of the standard Check_MK distribution. This simplifies the task of adding support for the HPE Virtual Connect Fibre Channel modules and reduces it to be just a matter of extending the already existing checks with three rather simple patches.

For the impatient and TL;DR here are the enhanced versions of the qlogic_fcport, qlogic_sanbox and qlogic_sanbox_fabric_element:

Enhanced version of the qlogic_fcport check
Enhanced version of the qlogic_sanbox check
Enhanced version of the qlogic_sanbox_fabric_element check

The sources to the enhanced versions of all three checks can be found in my Check_MK Plugins repository on GitHub.

The necessary changes to qlogic_fcport and qlogic_sanbox_fabric_element are limited to the snmp_scan_function used by the Check_MK inventory. Here, the vendor specific OIDs for the HPE Virtual Connect Fibre Channel modules are added. The following patches show the respective lines for qlogic_fcport:

qlogic_fcport.patch
--- a/checks/qlogic_fcport   2017-03-06 21:00:07.397607946 +0100
+++ b/checks/qlogic_fcport   2017-10-01 14:34:48.153710776 +0200
@@ -218,12 +218,14 @@
     # .1.3.6.1.4.1.3873.1.12 QLogic 8 Gb and 4/8 Gb Intelligent Pass-thru Module
     # .1.3.6.1.4.1.3873.1.9  QLogic SANBox 5802 FC Switch
     # .1.3.6.1.4.1.3873.1.11 HP StorageWorks 8/20q Fibre Channel Switch
+    # .1.3.6.1.4.1.3873.1.16 HPE Virtual Connect FlexFabric
     'snmp_scan_function'    : lambda oid: \
            oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.14") \
         or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8") \
         or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.11") \
         or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.12") \
-        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.9"),
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.9") \
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.16"),
     'group':                   'qlogic_fcport',
     'default_levels_variable': 'qlogic_fcport_default_levels',
 }

and for qlogic_sanbox_fabric_element:

qlogic_sanbox_fabric_element.patch
--- a/checks/qlogic_sanbox_fabric_element    2017-03-06 21:00:07.397607946 +0100
+++ b/checks/qlogic_sanbox_fabric_element    2017-10-01 14:47:35.000003198 +0200
@@ -54,7 +54,9 @@
                                                            OID_END]),
     # .1.3.6.1.4.1.3873.1.14 Qlogic-Switch
     # .1.3.6.1.4.1.3873.1.8  Qlogic-4Gb SAN Switch Module for IBM BladeCenter
+    # .1.3.6.1.4.1.3873.1.16 HPE Virtual Connect FlexFabric
     'snmp_scan_function'    : lambda oid: \
            oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.14") \
-        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8"),
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8") \
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.16"),
 }

In both cases, the relevant lines being: 

        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.16"),

After those two simple changes, the checks will now be able to successfully inventorize the overall fabric status as well as the status of individual ports of HPE Virtual Connect Fibre Channel modules.

The necessary changes to qlogic_sanbox also require the extension of the snmp_scan_function used by the Check_MK inventory as shown by the patches above. In addition to that, the string operations on the sensor_id need to be adjusted in order to get a more user-friendly name for the temperature and power supply sensors which are also present in the HPE Virtual Connect Fibre Channel modules. Since the sensor IDs are encoded in the SNMP OIDs and the SNMP tree for those OIDs can vary from module to module, the simple string replacement in the original qlogic_sanbox check was exchanged for a more general, regular expression based substitution. The following patch shows the respective lines for the combined changes to qlogic_sanbox:

qlogic_sanbox.patch
--- a/checks/qlogic_sanbox   2017-03-06 21:00:07.397607946 +0100
+++ b/checks/qlogic_sanbox   2017-10-01 14:47:51.348002546 +0200
@@ -44,7 +44,7 @@
     inventory = []
     for sensor_name, sensor_status, sensor_message, sensor_type, \
         sensor_characteristic, sensor_id in info:
-        sensor_id = sensor_id.replace("16.0.0.192.221.48.", "").replace(".0.0.0.0.0.0.0.0", "")
+        sensor_id = re.sub('^(16\.0\.0\.192\.221\.48|16\.0\.116\.70\.160\.113)\..*0\.0\.0\.0\.0\.0\.0\.0\.', '', sensor_id)
         if sensor_type == "8" and sensor_characteristic == "3" and \
             sensor_name != "Temperature Status":
             inventory.append( (sensor_id, None) )
@@ -53,7 +53,7 @@
 def check_qlogic_sanbox_temp(item, _no_params, info):
     for sensor_name, sensor_status, sensor_message, sensor_type, \
         sensor_characteristic, sensor_id in info:
-        sensor_id = sensor_id.replace("16.0.0.192.221.48.", "").replace(".0.0.0.0.0.0.0.0", "")
+        sensor_id = re.sub('^(16\.0\.0\.192\.221\.48|16\.0\.116\.70\.160\.113)\..*0\.0\.0\.0\.0\.0\.0\.0\.', '', sensor_id)
         if sensor_id == item:
             sensor_status = int(sensor_status)
             if sensor_status < 0 or sensor_status >= len(qlogic_sanbox_status_map):
@@ -93,9 +93,11 @@
                                                        OID_END]),
     # .1.3.6.1.4.1.3873.1.14 Qlogic-Switch
     # .1.3.6.1.4.1.3873.1.8  Qlogic-4Gb SAN Switch Module for IBM BladeCenter
+    # .1.3.6.1.4.1.3873.1.16 HPE Virtual Connect FlexFabric
     'snmp_scan_function'    : lambda oid: \
            oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.14") \
-        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8"),
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8") \
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.16"),
 }
 
 #.
@@ -113,7 +115,7 @@
     inventory = []
     for sensor_name, sensor_status, sensor_message, sensor_type, \
         sensor_characteristic, sensor_id in info:
-        sensor_id = sensor_id.replace("16.0.0.192.221.48.", "").replace(".0.0.0.0.0.0.0.0", "")
+        sensor_id = re.sub('^(16\.0\.0\.192\.221\.48|16\.0\.116\.70\.160\.113)\..*0\.0\.0\.0\.0\.0\.0\.0\.', '', sensor_id)
         if sensor_type == "5":
             inventory.append( (sensor_id, None) )
     return inventory
@@ -121,7 +123,7 @@
 def check_qlogic_sanbox_psu(item, _no_params, info):
     for sensor_name, sensor_status, sensor_message, sensor_type, \
         sensor_characteristic, sensor_id in info:
-        sensor_id = sensor_id.replace("16.0.0.192.221.48.", "").replace(".0.0.0.0.0.0.0.0", "")
+        sensor_id = re.sub('^(16\.0\.0\.192\.221\.48|16\.0\.116\.70\.160\.113)\..*0\.0\.0\.0\.0\.0\.0\.0\.', '', sensor_id)
         if sensor_id == item:
             sensor_status = int(sensor_status)
             if sensor_status < 0 or sensor_status >= len(qlogic_sanbox_status_map):
@@ -153,7 +155,9 @@
                                                        OID_END]),
     # .1.3.6.1.4.1.3873.1.14 Qlogic-Switch
     # .1.3.6.1.4.1.3873.1.8  Qlogic-4Gb SAN Switch Module for IBM BladeCenter
+    # .1.3.6.1.4.1.3873.1.16 HPE Virtual Connect FlexFabric
     'snmp_scan_function'    : lambda oid: \
            oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.14") \
-        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8"),
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.8") \
+        or oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.3873.1.16"),
 }

After those additional, but still simple, changes, the check will now be able to successfully inventorize the temperature and power supply sensors of HPE Virtual Connect Fibre Channel modules.

2017-10-01 @ 14:05 | written by Frank Fegert (XING)
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