HMC REST web services operate on 12443 HTTP Port. The following URL is an example of the full URL that must be used to get the management console information:
https:<hmcIP>:12443/rest/api/uom/ManagementConsole
https:<hmcIP>:12443/rest/api/uom/ManagedSystem
https://aix4admins.blogspot.com/2018/08/api-hmc.html
https://ftpmirror.your.org/pub/misc/ftp.software.ibm.com/systems/power/docs/hw/p9/p9ehl.pdf
Create a file login.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <LogonRequest xmlns="http://www.ibm.com/xmlns/systems/power/firmware/web/mc/2012_10/" schemaVersion="V1_0"> <UserID>hscroot</UserID> <Password>abc123</Password> </LogonRequest>
First login to create a cokies.txt file
HMC=hmcp9 curl -k -c cookies.txt -i -X PUT -H "Content-Type: application/vnd.ibm.powervm.web+xml; type=LogonRequest" -H "Accept: application/vnd.ibm.powervm.web+xml; type=LogonResponse" -H "X-Audit-Memento: hmc_test" -d @login.xml https://$HMC:12443/rest/api/web/Logon
First login to create a cokies.txt file
HMC=hmcp9 curl -k -c cookies.txt -b cookies.txt -X "DELETE" https://$HMC:12443/rest/api/web/Logon
# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://$HMC:12443/rest/api/uom/LogicalPartition
# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://$HMC:12443/rest/api/uom/ManagedSystem
Get Power9 system ID:
[root@lnx01 ~]# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://$HMC:12443/rest/api/uom/ManagedSystem > toto [root@lnx01 ~]# cat toto | egrep '<id>|SystemName' <id>38xxxxxx-140b-30f2-8544-7xxxxxxxx4b3</id> <id>f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a</id> <SystemName kb="CUR" kxe="false">p9-SiteA</SystemName> <id>3exxxxxx-7ac6-325d-9f15-3xxxxxxxxdd3</id> <SystemName kb="CUR" kxe="false">p9-SiteB</SystemName>
Use now the ID of both P9 to get the list of json files
# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://hmcp9:12443/rest/api/pcm/ManagedSystem/f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a/RawMetrics/EnergyMonitor/
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:ns2="http://a9.com/-/spec/opensearch/1.1/" xmlns:ns3="http://www.w3.org/1999/xhtml">
<id>f0xxxxxx-c7c9-38f3-8f99-6de73b35758a</id>
<updated>2025-10-22T16:38:30.000+02:00</updated>
<title type="text">EnergyMonitorMetrics</title>
<subtitle type="text">ManagedSystem f0xxxxxx-c7c9-38f3-8f99-6de73b35758a</subtitle>
<link rel="self" href="https://hmcp9:12443/rest/api/pcm/ManagedSystem/f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a/RawMetrics/EnergyMonitor/"/>
<generator uri="IBM Power Systems Management Console" version="1"/>
<entry>
<id>8bdaf564-ad40-4c3a-be9b-3d5f506ebd7b</id>
<updated>2025-10-22T15:46:00.000+02:00</updated>
<title type="text">LTM_9009-22A*78xxxx0_fsp_20251022T154600+0200.json</title>
<published>2025-10-22T15:46:00.000+02:00</published>
<link type="application/vnd.ibm.powervm.pcm.json" href="https://hmcp9:12443/rest/api/pcm/ManagedSystem/f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a/RawMetrics/EnergyMonitor/LTM_9009-22A*78xxxx0_fsp_20251022T154600+0200.json"/>
<author>
<name>IBM Power Systems Management Console</name>
</author>
<category term="fsp"/>
</entry>
<entry>
<id>11ba3435-47a5-406e-b315-5979210a9b4b</id>
<updated>2025-10-22T15:46:30.000+02:00</updated>
<title type="text">LTM_9009-22A*78xxxx0_fsp_20251022T154630+0200.json</title>
<published>2025-10-22T15:46:30.000+02:00</published>
<link type="application/vnd.ibm.powervm.pcm.json" href="https://hmcp9:12443/rest/api/pcm/ManagedSystem/f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a/RawMetrics/EnergyMonitor/LTM_9009-22A*78xxxx0_fsp_20251022T154630+0200.json"/>
<author>
<name>IBM Power Systems Management Console</name>
</author>
<category term="fsp"/>
</entry>
....
Get one json file (you need to accept JSON), and read it using jq JSON parser
# curl -k -c cookies.txt -b cookies.txt -X GET -H "Accept: application/json" https://hmcp9:12443/rest/api/pcm/ManagedSystem/f0xxxxxx-c7c9-38f3-8f99-6xxxxxxxx58a/RawMetrics/EnergyMonitor/LTM_9009-22A*78xxxx0_fsp_20251022T154630+0200.json | jq .
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1306 0 1306 0 0 39575 0 --:--:-- --:--:-- --:--:-- 39575
{
"timeStamp": "2025-10-22T15:46:30+0200",
"status": 0,
"errorInfo": [],
"utilInfo": {
"version": "1.0.0",
"metricType": "Raw",
"monitoringType": "LTM",
"mtms": "9009-22A*78xxxx0",
"name": "p9-SiteB"
},
"powerEnergyReading": {
"currentPowerReading": 700,
"minimumPowerReading": 700,
"maximumPowerReading": 700,
"averagePowerReading": 700,
"ipmiTimeStamp": "Wed Oct 22 15:52:09 2025",
"reportingPeriod": 30,
"powerReadingState": "activated"
},
"thermalEnergyReading": {
"inletTemperatures": [
{
"entityId": "Inlet air temperature(40h)",
"entityInstance": "1",
"temperatureData": 27
}
],
"cpuTemperatures": [
{
"entityId": "CPU temperature sensors(41h)",
"entityInstance": "1",
"temperatureData": 60
},
{
"entityId": "CPU temperature sensors(41h)",
"entityInstance": "2",
"temperatureData": 68
}
],
"baseboardTemperatures": [
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "1",
"temperatureData": 47
},
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "2",
"temperatureData": 46
},
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "3",
"temperatureData": 45
},
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "4",
"temperatureData": 48
},
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "5",
"temperatureData": 49
},
{
"entityId": "Baseboard temperature sensors(42h)",
"entityInstance": "6",
"temperatureData": 48
}
]
}
}
Question
How to configure HMC SNMP?
Answer
The HMC does not support being managed by an external SNMP application/agent. The only SNMP related features available on the HMC is the ability to send a SNMP traps (short notification messages) to an external server.