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The next steps show how to configure the monitoring on a Linux device with SNMPv2.
The following configuration is basic and has to be customized to the needs.
- Make sure that SNMP packages are installed.
From Red-hat Linux-based machines as root:
yum install -y net-snmp net-snmp-libs net-snmp-utils
From Debian Linux based machines as root:
apt-get install snmpd snmp
- Make a copy of the default configuration.
cp /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.bak
- Create a specific SNMP configuration.
The suggested configuration is basic but can obviously be customized, change 'myCommunity' with the desired community name.
echo 'com2sec allConfig default myCommunity' > /etc/snmp/snmpd.conf
echo 'group allConfigGroup v2c allConfig' >> /etc/snmp/snmpd.conf
echo 'view allView included .1' >> /etc/snmp/snmpd.conf
echo 'access allConfigGroup "" any noauth exact allView none none' >> /etc/snmp/snmpd.conf
- Activate snmpd service.
systemctl restart snmpd
systemctl enable snmpd
- Check snmpd service.
Now it is possible to check that snmpd is running properly and retrieve some data:
- For memory info :
snmpwalk -v 2c -c myCommunity -O e localhost UCD-SNMP-MIB::memory
- For CPU info:
snmpwalk -v 2c -c myCommunity -O e localhost UCD-SNMP-MIB::systemStats
- Monitor the node.
Run the discovery on the node.
- Go to Admin -> Setup -> Credentials -> 'Step 1: Enter Credentials' -> New and set Access Protocol: SNMP and previous community name chosen then save.
- Then associate the IP in 'Step 2: Enter IP Range to Credential Associations'.
- Create a new entry at Admin -> Setup -> Discovery and run the discovery.
- Finally, in Admin -> Setup -> Monitoring Performance, it is possible to edit the desired type of information to monitor.
- Tip: To see the events collected, it is possible to run a query in analytics with filter 'Event Type' containing PH_DEV_MON and reporting ip = ip_of_your_machine.
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