Bug 813361 - [apache plugin] SNMP ping timeout is too low (50ms) and is not configurable
[apache plugin] SNMP ping timeout is too low (50ms) and is not configurable
Product: RHQ Project
Classification: Other
Component: Plugins (Show other bugs)
All All
urgent Severity high (vote)
: GA
: RHQ 4.4.0
Assigned To: Charles Crouch
Mike Foley
Depends On:
Blocks: 864255
  Show dependency treegraph
Reported: 2012-04-17 11:07 EDT by Ian Springer
Modified: 2015-02-01 18:27 EST (History)
4 users (show)

See Also:
Fixed In Version: 4.4
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 864255 (view as bug list)
Last Closed: 2013-09-01 06:05:54 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

  None (edit)
Description Ian Springer 2012-04-17 11:07:00 EDT
The following message appears in the Agent log if an Apache Server avail check fails due to the SNMP "ping" timing out:

2012-04-11 17:44:56,271 DEBUG [ResourceContainer.invoker.daemon-102] (rhq.plugins.www.snmp.SNMPSession_v2c)- Error while pinging SNMP 1 agent at SNMP GETNEXT request for iso(1) failed - org.rhq.plugins.www.snmp.SNMPException: Request for [iso] timed out.

Looking at the code, the SNMP timeout that's used is 50ms (with 1 retry) and is not configurable, so I'm not surprised it's timing out every so often... 50ms seems way low to me. 

I think we should do the following:

1) increase the default value for the timeout to 4s so it's just under the default avail facet timeout
2) change the default retries from 1 to 0
3) make the timeout and the retries configurable via conn props
Comment 1 Ian Springer 2012-04-18 12:40:51 EDT
Done in master:


Here are the two new props that have been added to the Apache Server type's plugin config:

         <c:simple-property name="snmpRequestTimeout" displayName="SNMP Request Timeout" type="long" default="2000" required="false"
                            description="the timeout, in milliseconds, for requests to the Apache SNMP agent; defaults to 2000">
             <c:integer-constraint minimum="100"/>

         <c:simple-property name="snmpRequestRetries" displayName="SNMP Request Retries" type="integer" default="1" required="false"
                            description="the number of times a request that has timed out should be retried; defaults to 1">
             <c:integer-constraint minimum="0"/>
Comment 4 Heiko W. Rupp 2013-09-01 06:05:54 EDT
Bulk closing of items that are on_qa and in old RHQ releases, which are out for a long time and where the issue has not been re-opened since.

Note You need to log in before you can comment on or make changes to this bug.