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Type: Bug
Resolution: Done
Priority: Major - P3
Fix Version/s: 2.5.4
Affects Version/s: 2.5.3
Component/s: Diagnostics
Labels:
- 26qa
Environment:
* EC2, RHEL 6.4 (ami-a25415cb), m1.xlarge, standalone mongod, default net-snmp version 5.5 (looks to be the same version that comes with amazon linux)

Operating System:
Linux
Steps To Reproduce:

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0.) Install standard pre-req packages for SNMP.
1.) Copy mongod.conf.subagent to /etc/snmp/mongod.conf
2.) Start mongod with --snmp-subagent
3.) snmpwalk e.g. snmpwalk -m MONGO-MIB -v 2c -c mongodb 127.0.0.1 1.3.6.1.4.1.34601 and get error: MONGO-MIB::mongodb = No Such Object available on this agent at this OID

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0.) Install standard pre-req packages for SNMP. 1.) Copy mongod.conf.subagent to /etc/snmp/mongod.conf 2.) Start mongod with --snmp-subagent 3.) snmpwalk e.g. snmpwalk -m MONGO-MIB -v 2c -c mongodb 127.0.0.1 1.3.6.1.4.1.34601 and get error: MONGO-MIB::mongodb = No Such Object available on this agent at this OID

The current mongod.conf.subagent config doesn't work when running --snmp-subagent on RHEL. As per the docs (https://access.redhat.com/site/documentation/en-US/Red_Hat_Directory_Server/8.1/html/Administration_Guide/Monitoring_DS_Using_SNMP-Configuring_the_Subagent.html), if I edit /etc/snmp/mongod.conf and add the below lines to specify how to talk to the snmp master, and then restart mongod and snmpwalk, I successfully see values for the walk.

Current config settings
#agentXSocket tcp:localhost:707
#agentXSocket /tmp/agentx/master

Add below for RHEL
#agentx-master localhost:707
agentx-master /var/snmp/agentx