Displaying CPU Temperature in Proxmox Summary in Real Time

Standard

JSON

Script automated installation

Standard

wget -O - https://raw.githubusercontent.com/AlessandroPerazzetta/proxmox-temperature-stats/main/pve_thermal_standard.sh | bash

JSON

wget -O - https://raw.githubusercontent.com/AlessandroPerazzetta/proxmox-temperature-stats/main/pve_thermal_json.sh | bash

Manual installation

1. Lets install lm-sensors to show us the information we need. Type the following in the proxmox shell

   apt-get install lm-sensors

   Next we can check if its working. To do this we can type sensors

   The main part we are interested in is:

    root@pve:~# sensors
   
    coretemp-isa-0000
    Adapter: ISA adapter
    Package id 0:  +23.0°C  (high = +84.0°C, crit = +100.0°C)
    Core 0:        +21.0°C  (high = +84.0°C, crit = +100.0°C)
    Core 1:        +21.0°C  (high = +84.0°C, crit = +100.0°C)
    Core 2:        +22.0°C  (high = +84.0°C, crit = +100.0°C)
    Core 3:        +19.0°C  (high = +84.0°C, crit = +100.0°C)
   

   If you see this you are good to go!

2. Adding the output of sensors to information

   Here we will edit some files. In your shell, type the following:

   vi /usr/share/perl5/PVE/API2/Nodes.pm

   Next, you can search for my $dinfo and press Enter

   The code should look like this:

        $res->{pveversion} = PVE::pvecfg::package() . "/" .
            PVE::pvecfg::version_text();
   
        my $dinfo = df('/', 1);     # output is bytes
   

   We are going to add the following line of code in between: $res->{thermalstate} = \sensors;

   So the final result should look like this:

        $res->{pveversion} = PVE::pvecfg::package() . "/" .
            PVE::pvecfg::version_text();
   
        $res->{thermalstate} = `sensors`;
   
        my $dinfo = df('/', 1);     # output is bytes
   

   Now save and exit.

   STANDARD version

   Add no parameters to have standard output format:

    $res->{thermalstate} = `sensors`;
   

   JSON version

   Add parameters to have JSON output format:

    $res->{thermalstate} = `sensors -jA`;
   

3. Making space for the new information

   Next we will need to edit another file

   Type the following command into your shell:

   vi /usr/share/pve-manager/js/pvemanagerlib.js

   Once in press search for my widget.pveNodeStatus and press Enter

   You will get a snippit of code that looks like this:

    Ext.define('PVE.node.StatusView', {
    extend: 'PVE.panel.StatusView',
    alias: 'widget.pveNodeStatus',
   
    height: 300,
    bodyPadding: '5 15 5 15',
   
    layout: {
        type: 'table',
        columns: 2,
        tableAttrs: {
            style: {
                width: '100%'
            }
        }
    },
   

   Next change the bodyPadding: '5 15 5 15', to bodyPadding: '20 15 20 15',

   As well as height: 300, to height: 360,

   Dont close the file this time!

4. Final part to edit

   Now search for PVE Manager Version and press Enter

   You will see a section of code like this:

        {
            itemId: 'version',
            colspan: 2,
            printBar: false,
            title: gettext('PVE Manager Version'),
            textField: 'pveversion',
            value: ''
        }
   

   Ok now we need to add some code after this part. The code is:

        {
            itemId: 'thermal',
            colspan: 2,
            printBar: false,
            title: gettext('CPU Thermal State'),
            textField: 'thermalstate',
            renderer:function(value){
                const c0 = value.match(/Core 0.*?\+([\d\.]+)Â/)[1];
                const c1 = value.match(/Core 1.*?\+([\d\.]+)Â/)[1];
                const c2 = value.match(/Core 2.*?\+([\d\.]+)Â/)[1];
                const c3 = value.match(/Core 3.*?\+([\d\.]+)Â/)[1];
                return `Core 0: ${c0} ℃ | Core 1: ${c1} ℃ | Core 2: ${c2} ℃ | Core 3: ${c3} ℃`
            }
        }
   

   Therefore your final result should look something like this:

        {
            itemId: 'version',
            colspan: 2,
            printBar: false,
            title: gettext('PVE Manager Version'),
            textField: 'pveversion',
            value: ''
        },
        {
            itemId: 'thermal',
            colspan: 2,
            printBar: false,
            title: gettext('CPU Thermal State'),
            textField: 'thermalstate',
            renderer:function(value){
                const c0 = value.match(/Core 0.*?\+([\d\.]+)Â/)[1];
                const c1 = value.match(/Core 1.*?\+([\d\.]+)Â/)[1];
                const c2 = value.match(/Core 2.*?\+([\d\.]+)Â/)[1];
                const c3 = value.match(/Core 3.*?\+([\d\.]+)Â/)[1];
                return `Core 0: ${c0} ℃ | Core 1: ${c1} ℃ | Core 2: ${c2} ℃ | Core 3: ${c3} ℃`
            }
        }
   

   Now we can finally save and exit.

   STANDARD version

        {
            itemId: 'thermal',
            colspan: 2,
            printBar: false,
            title: gettext('CPU Thermal State'),
            textField: 'thermalstate',
            renderer:function(value){
                const c0 = value.match(/Core 0.*?\+([\d\.]+)Â/)[1];
                const c1 = value.match(/Core 1.*?\+([\d\.]+)Â/)[1];
                const c2 = value.match(/Core 2.*?\+([\d\.]+)Â/)[1];
                const c3 = value.match(/Core 3.*?\+([\d\.]+)Â/)[1];
                return `Core 0: ${c0} ℃ | Core 1: ${c1} ℃ | Core 2: ${c2} ℃ | Core 3: ${c3} ℃`
            }
        }
   

   JSON version

        {
            itemId: 'thermals',
            colspan: 2,
            printBar: false,
            title: gettext('Thermals'),
            textField: 'thermalstate',
            renderer:function(value){
                let result = [];
                const sensors = JSON.parse(value);
                Object.entries(sensors).forEach(([sensor, temps]) => {
                    let sensorTemps = [];
                    Object.entries(temps).forEach(([name, temp]) => {
                        Object.entries(temp).forEach(([key, val]) => {
                            if(key.includes('_input')){
                                sensorTemps.push(name + ': ' + val + ' °C');
                            }
                        });
                    });
                    result.push(sensor + ' ' + sensorTemps.join(' | '))
                });
                return result.join('<br>');
            }
        }
   

5. Restart pve manager and refresh summary page

   To do this you will have to type in the following command:

   systemctl restart pveproxy

   If you got kicked out of the shell or it froze, dont worry this is normal! As the final step, either refresh your webpage with F5 or ideally close you browser and open proxmox again.

Credits: Reddit