将PVE的温度与公告信息添加到Linux虚拟机中

1. 在PVEwebui的系统概要中显示温度#

使用脚本一键完成

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wget -O /root/showtempcpufreq.sh https://raw.githubusercontent.com/a904055262/PVE-manager-status/main/showtempcpufreq.sh && chmod +x /root/showtempcpufreq.sh && /root/showtempcpufreq.sh

参考资料：GitHub - a904055262/PVE-manager-status

2. 将PVE的温度信息同步到Linux虚拟机中#

2.1. 前提提要#

PVE版本：9.0.5 虚拟机系统：Ubuntu server 24.04.3 LTS 虚拟机机型：q35（为必须，否则将无法挂载温度文件到虚拟机）

2.2 在 PVE 宿主机上定时获取 CPU 温度#

2.2.1. 创建共享目录并设置权限#

在 PVE 主机上执行：

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# 创建目录（按需修改路径）
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mkdir -p /srv/virtfs/sharedtemp
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# 设置所有者与权限（允许宿主写、虚拟机读）
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chown root:root /srv/virtfs/sharedtemp
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chmod 755 /srv/virtfs/sharedtemp

各位可以自行修改目录的位置，记得这里修改了，后面关于位置的信息也要进行修改

2.2.2. 安装并启动sensors#

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apt update
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apt install lm-sensors -y
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sensors-detect --auto
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sensors

执行完 sensors 命令之后应该可以看到这样的输出

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root@pve:~# sensors
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coretemp-isa-0000
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Adapter: ISA adapter
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Package id 0:  +32.0°C  (high = +90.0°C, crit = +100.0°C)
5
Core 0:        +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 1:        +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 2:        +32.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 3:        +32.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 4:        +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 5:        +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 6:        +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 8:        +29.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 9:        +32.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 10:       +31.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 11:       +32.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 12:       +32.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 13:       +29.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 16:       +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 17:       +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 18:       +31.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 19:       +31.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 20:       +29.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 21:       +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 22:       +29.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 24:       +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 25:       +29.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 26:       +30.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 27:       +31.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 28:       +31.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 29:       +32.0°C  (high = +90.0°C, crit = +100.0°C)
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pch_lewisburg-virtual-0
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Adapter: Virtual device
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temp1:        +45.0°C
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coretemp-isa-0001
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Adapter: ISA adapter
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Package id 1:  +37.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 0:        +37.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 1:        +37.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 2:        +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 3:        +34.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 4:        +34.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 5:        +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 6:        +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 8:        +34.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 9:        +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 10:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 11:       +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 12:       +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 13:       +37.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 16:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 17:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 18:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 19:       +38.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 20:       +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 21:       +34.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 22:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 24:       +33.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 25:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 26:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 27:       +36.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 28:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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Core 29:       +35.0°C  (high = +90.0°C, crit = +100.0°C)
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power_meter-acpi-0
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Adapter: ACPI interface
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power1:      288.00 W  (interval =   1.00 s)

2.2.3. 编写采集脚本#

创建脚本 /usr/local/bin/update_cpu_temp.sh

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#!/bin/bash
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# 可调校正值
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CORRECTION=0
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# 获取 CPU Package 温度
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TEMP=$(sensors 2>/dev/null | grep -m1 -E "Package id|Package" | awk '{print $4}')
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if [ -z "$TEMP" ]; then
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  TEMP=$(sensors 2>/dev/null | grep -m1 'Core 0' | awk '{print $3}')
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fi
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TEMP_NUM=$(echo "$TEMP" | sed 's/[^0-9.]//g')
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if [ -z "$TEMP_NUM" ]; then TEMP_NUM=0; fi
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ADJUSTED_TEMP=$(echo "$TEMP_NUM + $CORRECTION" | bc)
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ADJUSTED_TEMP_FMT=$(printf "%.1f°C" "$ADJUSTED_TEMP")
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# 获取功率
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POWER=$(sensors 2>/dev/null | grep -m1 'power1' | awk '{print $2}')
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POWER_NUM=$(echo "$POWER" | sed 's/[^0-9.]//g')
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if [ -z "$POWER_NUM" ]; then POWER_NUM=0; fi
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POWER_FMT=$(printf "%.1fW" "$POWER_NUM")
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# 时间戳
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DATE=$(date -Is)
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# 写入文件
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echo "$DATE CPU:$ADJUSTED_TEMP_FMT POWER:$POWER_FMT" > /srv/virtfs/sharedtemp/cpu_temp.txt
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echo "$DATE CPU:$ADJUSTED_TEMP_FMT POWER:$POWER_FMT" >> /srv/virtfs/sharedtemp/cpu_temp.log

给权限

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chmod +x /usr/local/bin/update_cpu_temp.sh

创建写入目录

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mkdir -p /srv/virtfs/sharedtemp
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chmod 777 /srv/virtfs/sharedtemp

定期执行脚本（使用 systemd timer）创建 service 单元 /etc/systemd/system/update-cpu-temp.service

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[Unit]
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Description=Update CPU temp file
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[Service]
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Type=oneshot
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ExecStart=/usr/local/bin/update_cpu_temp.sh

创建 timer `/etc/systemd/system/update-cpu-temp.timer

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[Unit]
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Description=Run update-cpu-temp every minute
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[Timer]
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OnCalendar=*:0/1
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Persistent=true
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Unit=update-cpu-temp.service
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[Install]
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WantedBy=timers.target

启动并启用定期执行：

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systemctl daemon-reload
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systemctl enable --now update-cpu-temp.timer

验证宿主机端写入是否正常

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# 等几秒后查看文件
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cat /srv/virtfs/sharedtemp/cpu_temp.txt
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tail -n 20 /srv/virtfs/sharedtemp/cpu_temp.log

2.3 创建并挂载#

2.3.1 创建并添加VirtIO FS#

在PVEwebui中选择 数据中心 ，找到 存储 ，添加 一个 目录；ID 可以随意填写， 目录 为在PVE中创建共享目录所使用的文件夹（我这里就是 /srv/virtfs/sharedtemp 这个目录）
点击虚拟机，现将虚拟机关机，再选择 硬件 ，点击 添加 ，选择 VirtIofs ，点击 目录ID 之后会让选择，这里我们选择刚才填写的ID，然后点击添加即可；再点击虚拟机下的 选项，将 QEMU Guest Agent 设为启用
打开虚拟机，依次执行一下命令，安装 QEMU Guest Agent

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apt-get install qemu-guest-agent
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sudo systemctl start qemu-guest-agent
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sudo systemctl enable qemu-guest-agent

2.3.2 在虚拟机中添加挂载点#

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sudo mkdir -p /mnt/sharedtemp
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sudo mount -t virtiofs sharedtemp /mnt/sharedtemp

挂载后可以测试：

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cat /mnt/sharedtemp/cpu_temp.txt

你应该能看到这样的输出

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2025-11-14T00:04:35+08:00 CPU:32.0°C POWER:283.0W

至此，整个过程就这样结束了