A script to collect various Raspberry Pi statistics, which are sent via Telegraf to InfluxDB.
The provided rpi-stats.sh script collects statistics using Raspbian's vcgencmd command. These values are parsed from the command's output and formatted in InfluxDB's line protocol for easy collection via Telegraf's exec input.
To learn how to install Telegraf (and the rest of the TICK Stack) on the Raspberry Pi, refer to this blog.
Copy the script to the directory from which you wish to run it (I usually put it in /usr/local/bin), and ensure that it can be executed by the user under which Telegraf will be run (the default user is telegraf). The user will need to have sudo rights.
Configure the Telegraf exec input to execute the script. For example...
[[inputs.exec]]
# Commands array
commands = [ "/usr/local/bin/rpi-stats.sh" ]
# Timeout for each command to complete.
timeout = "5s"
# Data format to consume.
data_format = "influx"A complete Telegraf configuration file (
telegraf.conf) is provided to help you get started.
After Telegraf is started, data will be sent to InfluxDB.
A Raspberry Pi Health dashboard for Chronograf is provided in the file Raspberry_Pi_Health.json. This can be imported from Chronograf's Dashboards list.
| Metric | Description |
|---|---|
| arm_freq | clock frequency of the ARM processor |
| arm_mem | memory size allocated to the ARM processor |
| core_freq | clock frequency of the SOC |
| config_arm_freq | configured clock frequency of the ARM processor |
| config_core_freq | configured clock frequency of the SOC |
| config_gpu_freq | configured clock frequency of the GPU |
| config_sdram_freq | configured clock frequency of the SDRAM |
| core_volts | voltage provided to the SOC |
| dpi_freq | clock frequency of the DPI |
| emmc_freq | clock frequency of the EMMC |
| gpu_mem | memory size allocated to the GPU |
| h264_freq | clock frequency of the H.264 |
| hdmi_freq | clock frequency of the HDMI |
| isp_freq | clock frequency of the ISP |
| malloc_mem | free GPU memory in the malloc heap |
| malloc_total_mem | total memory assigned to the GPU malloc heap |
| mem_reloc_allocation_failures | relocatable memory failures |
| mem_reloc_compactions | relocatable memory compactions |
| mem_reloc_legacy_block_failures | relocatable memory legacy block failures |
| oom_count | count of out-of-memory events |
| oom_ms | total milliseconds in the out-of-memory handler |
| pixel_freq | clock frequency of the Pixel |
| pwm_freq | clock frequency of the PWM |
| reloc_mem | free GPU memory in the relocatable heap |
| reloc_total_mem | total memory assigned to the GPU relocatable heap |
| sdram_c_volts | voltage provided to SOC SDRAM |
| sdram_i_volts | voltage provided to I/O SDRAM |
| sdram_p_volts | voltage provided to Physical SDRAM |
| soc_temp | temperature of the SOC |
| uart_freq | clock frequency of the UART |
| v3d_freq | clock frequency of the V3D |
| vec_freq | clock frequency of the VEC |