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====== HMC using Rest API ======

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

==== Initiate a new RestAPI session ====

Create a file **login.xml**
<code>
<?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>
</code>

First login to create a cokies.txt file
<cli prompt='#'>
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
</cli>

==== Kill the RestAPI session ====

First login to create a cokies.txt file
<cli prompt='#'>
HMC=hmcp9

curl -k -c cookies.txt -b cookies.txt -X "DELETE" https://$HMC:12443/rest/api/web/Logon
</cli>

==== List partitions ====

<cli prompt='#'>
# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://$HMC:12443/rest/api/uom/LogicalPartition
</cli>

==== List Managed system / Power Servers ====

<cli prompt='#'>
# curl -k -c cookies.txt -b cookies.txt -H "Accept: application/atom+xml; charset=UTF-8" https://$HMC:12443/rest/api/uom/ManagedSystem
</cli>

<code>
</code>

==== Get temperature on the Power servers ====

Get Power9 system ID:
<cli prompt='#'>
[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>
</cli>

Use now the ID of both P9 to get the list of json files
<cli prompt='#'>
# 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/           
</cli>
<code>
<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>
....
</code>

Get one json file (you need to accept JSON), and read it using **jq** JSON parser
<cli prompt='#'>
# 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 .
</cli>
<code>
  % 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
      }
    ]
  }
}
</code>

====== SNMP ======

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.
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