RaspberryPiでNetdata

提供: ディーズガレージ wiki
移動先: 案内、 検索

リアルタイムパフォーマンスヘルスモニターを作ってみます。
IoT MONITOR
Iot-monitor02.png

環境

ボード Raspberry Pi 2B 3B 3B+ ZERO
OS Raspbian Stretch with desktop 2019-04-08
ストレージ SanDisk Ultra microSDHC 16GB
LAN 標準搭載の有線LAN

具合

  • 2020/09/04 Moduleの一部修正しました
    Module CPUスロットリング
    Module CPUコア電圧
    Module CPU周波数モード
  • 2020/02/08 外部プラグインでエラーが多発してる
  • rebootでnginxが停止してる sudo service nginx restartで起動はする
  • rebootでTSL2561が動かないことがある python tsl2561.pyをたたけば動き出す
  • rebootでBME280が動かないことがある python bme280.pyをたたけば動き出す
  • Custom Dashboardのeasy-pie-chartをレスポンシブなリサイズに対応させていない
  • GPIO具合
GPIO 50mAまで
BME280 3.6μA
TSL2561 0.5mA
PocketGeiger 10mA

準備

OS

省略

IP固定(親機)

$ sudo nano /etc/dhcpcd.conf

末尾に追記 

interface eth0
static ip_address=192.168.1.187/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

ホスト名

Menu > 設定 > Raspberry Piの設定 > システムタブ > ホスト名
iot など
OK > 再起動

遠隔操作

標準で入っているRealVNCを使用

VNC有効 

Menu > 設定 > Raspberry Piの設定 > インターフェイスタブ > VNC有効 > OK

解像度の変更 

Menu > 設定 > Raspberry Piの設定 > システムタブ > 解像度 > 1280x960程度 > OK > 再起動

シャットダウンし、モニター、マウス、キーボードを取り外して電源入れ直し
WindowsPCなどのVNCクライアントから接続

Install

Installation guide - Netdata Documentation
Performance - Netdata Documentation
Netdata for IoT - Netdata Documentation 

$ bash <(curl -Ss https://my-netdata.io/kickstart.sh)

設定 

$ sudo /etc/netdata/edit-config netdata.conf

[global]
           history = 600
           memory mode = ram
         # debug log = /var/log/netdata/debug.log
         # error log = /var/log/netdata/error.log
         # access log = /var/log/netdata/access.log
           debug log = none
           error log = none
           access log = none
[web]
           enable gzip compression = no
[plugins]
           cgroups = no
           tc = no
           idlejitter = no

保存: Ctrl + o リターン
終了: Ctrl + x

温度センサー 

$ sudo /etc/netdata/edit-config charts.d.conf

末尾に追記 

sensors=force

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Streaming

Streaming and replication - Netdata Documentation

Parent(親機)

$ sudo /etc/netdata/edit-config stream.conf

設定 

# [API_KEY] is [YOUR-API-KEY], i.e [11111111-2222-3333-4444-555555555555]
[11111111-2222-3333-4444-555555555555]
   enabled = yes
   allow from = *
   default history = 3600
   default memory mode = ram
   health enabled by default = auto

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

オプトアウト
Anonymous statistics - Netdata Documentation 

$ cd /etc/netdata
$ sudo touch .opt-out-from-anonymous-statistics

ACLK無効
Disable the ACLK - Netdata Documentation 

$ sudo su
$ cd /var/lib/netdata/cloud.d
$ ls -l

cloud.confが無い場合 

$ cat > cloud.conf << EOF

[global]
    enabled = no
    cloud base url = https://app.netdata.cloud
EOF

$ chmod 0770 cloud.conf
$ chown netdata:netdata cloud.conf

$ exit

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Child(子機)

Child(子機)が複数台なら全てに同じ設定 

$ sudo /etc/netdata/edit-config stream.conf

設定 

[stream]
    enabled = yes
    destination = 192.168.1.187:19999
    api key = 11111111-2222-3333-4444-555555555555

保存: Ctrl + o リターン
終了: Ctrl + x 

$ sudo /etc/netdata/edit-config netdata.conf

設定 

[global]
          history = 600
          memory mode = none
          debug log = none
          error log = none
          access log = none
[web]
          mode = none
          accept a streaming request every seconds = 0
          enable gzip compression = no
[plugins]
          cgroups = no
          tc = no
          idlejitter = no

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

オプトアウト
Anonymous statistics - Netdata Documentation 

$ cd /etc/netdata
$ sudo touch .opt-out-from-anonymous-statistics

Nginx

High performance netdata - Netdata Documentation
Netdata via nginx - Netdata Documentation

  • Parent(親機)に設定
  • 公開向け設定
  • /api/v1/のメトリクスにアクセス制限
  • 8081番で設定

インストール 

$ sudo apt-get install nginx

デフォルト80番のシンボリックリンク削除 

$ sudo unlink /etc/nginx/sites-enabled/default

新規作成 

$ sudo nano /etc/nginx/sites-available/netdata

設定
netdata/collectors/python.d.plugin/nginx at master · GitHub 

upstream backend {
    server 127.0.0.1:19999;
    keepalive 1024;
}

server {
    listen *:8081;
    server_name my.web.server.name;

    location / {
        return 403;
    }

    location ~ /api/v1/ {
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://backend;
        proxy_http_version 1.1;
        proxy_pass_request_headers on;
        proxy_set_header Connection "keep-alive";
        proxy_store off;
        gzip on;
        gzip_proxied any;
        gzip_types *;

        # Block any HTTP requests other than GET, HEAD, and OPTIONS
        limit_except GET HEAD OPTIONS {
            deny all;
        }
    }

    # WordPress Pingback Request Denial
    if ($http_user_agent ~* "WordPress") {
        return 403;
    }

}

server{
    listen 80;
    server_name my.web.server.name;

    location /stub_status {
        stub_status on;
        access_log off;
        allow 127.0.0.1;
        deny all;
    }
}

保存: Ctrl + o リターン
終了: Ctrl + x

シンボリックリンク 

$ sudo ln -s /etc/nginx/sites-available/netdata /etc/nginx/sites-enabled/

再起動 

$ sudo service nginx restart

Module CPUスロットリング

RPI vcgencmd usage - eLinux.org
Frequency management and thermal control - Raspberry Pi Documentation
python.d.plugin - Netdata Documentation

グループvideoに追加 

$ sudo adduser netdata video
$ sudo reboot

確認 

$ vcgencmd get_throttled
throttled=0x0
0x0 正常
0x50000 過去 低電圧状態になったが現在は正常
0x50005 現在 低電圧状態
0x80000 過去 熱によりクロックダウン
0x80008 現在 熱によりクロックダウン

0x50005を{"voltage": 1}
0x80008を{"voltage": 2}
その他を{"voltage": 0}に振り分けてみる 

$ sudo nano /usr/libexec/netdata/python.d/throttle.chart.py

ソース 

# -*- coding: utf-8 -*-

from bases.FrameworkServices.ExecutableService import ExecutableService

VCGENCMD_COMMAND = "vcgencmd get_throttled"

ORDER = ["throttle"]

CHARTS = {
    "throttle": {
        "options": [
            "vcgencmd get_throttled",
            "CPU throttling or under-voltage",
            "",
            "voltage",
            "",
            "line",
        ],
        "lines": [["voltage", "throttle", "absolute", 1]],
    }
}


class Service(ExecutableService):
    def __init__(self, configuration=None, name=None):
        ExecutableService.__init__(self, configuration=configuration, name=name)
        self.order = ORDER
        self.definitions = CHARTS
        self.command = VCGENCMD_COMMAND

    def _get_data(self):
        try:
            raw = self._get_raw_data()
            str = raw[0].split("=")[1].replace("\n", "")
            if str == "0x50005":
                return {"voltage": 1}
            elif str == "0x80008":
                return {"voltage": 2}
            else:
                return {"voltage": 0}
        except (ValueError, AttributeError):
            return None

保存: Ctrl + o リターン
終了: Ctrl + x 

$ sudo nano /usr/lib/netdata/conf.d/python.d/throttle.conf

ソース 

# netdata python.d.plugin configuration for example
#
# This file is in YaML format. Generally the format is:
#
# name: value
#
# There are 2 sections:
#  - global variables
#  - one or more JOBS
#
# JOBS allow you to collect values from multiple sources.
# Each source will have its own set of charts.
#
# JOB parameters have to be indented (using spaces only, example below).

# ----------------------------------------------------------------------
# Global Variables
# These variables set the defaults for all JOBs, however each JOB
# may define its own, overriding the defaults.

# update_every sets the default data collection frequency.
# If unset, the python.d.plugin default is used.
update_every: 1

# priority controls the order of charts at the netdata dashboard.
# Lower numbers move the charts towards the top of the page.
# If unset, the default for python.d.plugin is used.
priority: 60000

# retries sets the number of retries to be made in case of failures.
# If unset, the default for python.d.plugin is used.
# Attempts to restore the service are made once every update_every
# and only if the module has collected values in the past.
retries: 60

# ----------------------------------------------------------------------
# JOBS (data collection sources)
#
# The default JOBS share the same *name*. JOBS with the same name
# are mutually exclusive. Only one of them will be allowed running at
# any time. This allows autodetection to try several alternatives and
# pick the one that works.
#
# Any number of jobs is supported.
#
# All python.d.plugin JOBS (for all its modules) support a set of
# predefined parameters. These are:
#
# job_name:
#     name: myname     # the JOB's name as it will appear at the
#                      # dashboard (by default is the job_name)
#                      # JOBs sharing a name are mutually exclusive
#     update_every: 1  # the JOB's data collection frequency
#     priority: 60000  # the JOB's order on the dashboard
#     retries: 5       # the JOB's number of restoration attempts
#
# Additionally to the above, example also supports the following:
#
# - none
#
# ----------------------------------------------------------------------
# AUTO-DETECTION JOBS
# only one of them will run (they have the same name)

保存: Ctrl + o リターン
終了: Ctrl + x

debug 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/python.d.plugin throttle debug trace
Ctrl + c > 停止
Ctrl + d > ログアウト

登録 

$ sudo /etc/netdata/edit-config python.d.conf

末尾に追記 

throttle: yes

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Module CPUコア電圧

RPI vcgencmd usage - eLinux.org
python.d.plugin - Netdata Documentation

グループvideoに追加 

$ sudo adduser netdata video
$ sudo reboot

確認 

$ vcgencmd measure_volts
volt=1.2000V

$ sudo nano /usr/libexec/netdata/python.d/volts.chart.py

ソース 

# -*- coding: utf-8 -*-

from bases.FrameworkServices.ExecutableService import ExecutableService

VCGENCMD_COMMAND = "vcgencmd measure_volts"

ORDER = ["volts"]

CHARTS = {
    "volts": {
        "options": [
            "vcgencmd measure_volts",
            "Core voltage",
            "",
            "volt",
            "volts",
            "line",
        ],
        "lines": [["voltage", "volt", "absolute", 1]],
    }
}


class Service(ExecutableService):
    def __init__(self, configuration=None, name=None):
        ExecutableService.__init__(self, configuration=configuration, name=name)
        self.order = ORDER
        self.definitions = CHARTS
        self.command = VCGENCMD_COMMAND

    def _get_data(self):
        try:
            raw = self._get_raw_data()
            str = raw[0].split("=")[1].replace("V\n", "")
            str_float = float(str) * 1000
            return {"voltage": str_float}
        except (ValueError, AttributeError):
            return None

保存: Ctrl + o リターン
終了: Ctrl + x 

$ sudo nano /usr/lib/netdata/conf.d/python.d/volts.conf

ソース 

# netdata python.d.plugin configuration for example
#
# This file is in YaML format. Generally the format is:
#
# name: value
#
# There are 2 sections:
#  - global variables
#  - one or more JOBS
#
# JOBS allow you to collect values from multiple sources.
# Each source will have its own set of charts.
#
# JOB parameters have to be indented (using spaces only, example below).

# ----------------------------------------------------------------------
# Global Variables
# These variables set the defaults for all JOBs, however each JOB
# may define its own, overriding the defaults.

# update_every sets the default data collection frequency.
# If unset, the python.d.plugin default is used.
update_every: 1

# priority controls the order of charts at the netdata dashboard.
# Lower numbers move the charts towards the top of the page.
# If unset, the default for python.d.plugin is used.
priority: 60000

# retries sets the number of retries to be made in case of failures.
# If unset, the default for python.d.plugin is used.
# Attempts to restore the service are made once every update_every
# and only if the module has collected values in the past.
retries: 60

# ----------------------------------------------------------------------
# JOBS (data collection sources)
#
# The default JOBS share the same *name*. JOBS with the same name
# are mutually exclusive. Only one of them will be allowed running at
# any time. This allows autodetection to try several alternatives and
# pick the one that works.
#
# Any number of jobs is supported.
#
# All python.d.plugin JOBS (for all its modules) support a set of
# predefined parameters. These are:
#
# job_name:
#     name: myname     # the JOB's name as it will appear at the
#                      # dashboard (by default is the job_name)
#                      # JOBs sharing a name are mutually exclusive
#     update_every: 1  # the JOB's data collection frequency
#     priority: 60000  # the JOB's order on the dashboard
#     retries: 5       # the JOB's number of restoration attempts
#
# Additionally to the above, example also supports the following:
#
# - none
#
# ----------------------------------------------------------------------
# AUTO-DETECTION JOBS
# only one of them will run (they have the same name)

保存: Ctrl + o リターン
終了: Ctrl + x

debug 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/python.d.plugin volts debug trace
Ctrl + c > 停止
Ctrl + d > ログアウト

登録 

$ sudo /etc/netdata/edit-config python.d.conf

末尾に追記 

volts: yes

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Module CPU周波数モード

python.d.plugin - Netdata Documentation

インストール 

$ sudo apt install cpufrequtils

確認 

$ cpufreq-info -p
600000 1200000 performance

こんな感じにしてみる

cpufreq value
powersave 0
conservative 1
ondemand 2
performance 3 
$ sudo nano /usr/libexec/netdata/python.d/freqmode.chart.py

ソース 

# -*- coding: utf-8 -*-

from bases.FrameworkServices.ExecutableService import ExecutableService

COMMAND = "cpufreq-info -p"

ORDER = ["FreqMode"]

CHARTS = {
    "FreqMode": {
        "options": [None, "FreqMode", "", "FreqMode", "FreqMode", "line"],
        "lines": [["freqmode", "FreqMode", "absolute", 1]],
    }
}


class Service(ExecutableService):
    def __init__(self, configuration=None, name=None):
        ExecutableService.__init__(self, configuration=configuration, name=name)
        self.order = ORDER
        self.definitions = CHARTS
        self.command = COMMAND

    def _get_data(self):
        try:
            raw = self._get_raw_data()
            str = raw[0].split(" ")[2].replace("\n", "")
            if str == "powersave":
                return {"freqmode": 0}
            elif str == "conservative":
                return {"freqmode": 1}
            elif str == "ondemand":
                return {"freqmode": 2}
            elif str == "performance":
                return {"freqmode": 3}
        except (ValueError, AttributeError):
            return None

保存: Ctrl + o リターン
終了: Ctrl + x 

$ sudo nano /usr/lib/netdata/conf.d/python.d/freqmode.conf

ソース 

# netdata python.d.plugin configuration for example
#
# This file is in YaML format. Generally the format is:
#
# name: value
#
# There are 2 sections:
#  - global variables
#  - one or more JOBS
#
# JOBS allow you to collect values from multiple sources.
# Each source will have its own set of charts.
#
# JOB parameters have to be indented (using spaces only, example below).

# ----------------------------------------------------------------------
# Global Variables
# These variables set the defaults for all JOBs, however each JOB
# may define its own, overriding the defaults.

# update_every sets the default data collection frequency.
# If unset, the python.d.plugin default is used.
update_every: 1

# priority controls the order of charts at the netdata dashboard.
# Lower numbers move the charts towards the top of the page.
# If unset, the default for python.d.plugin is used.
priority: 60000

# retries sets the number of retries to be made in case of failures.
# If unset, the default for python.d.plugin is used.
# Attempts to restore the service are made once every update_every
# and only if the module has collected values in the past.
retries: 60

# ----------------------------------------------------------------------
# JOBS (data collection sources)
#
# The default JOBS share the same *name*. JOBS with the same name
# are mutually exclusive. Only one of them will be allowed running at
# any time. This allows autodetection to try several alternatives and
# pick the one that works.
#
# Any number of jobs is supported.
#
# All python.d.plugin JOBS (for all its modules) support a set of
# predefined parameters. These are:
#
# job_name:
#     name: myname     # the JOB's name as it will appear at the
#                      # dashboard (by default is the job_name)
#                      # JOBs sharing a name are mutually exclusive
#     update_every: 1  # the JOB's data collection frequency
#     priority: 60000  # the JOB's order on the dashboard
#     retries: 5       # the JOB's number of restoration attempts
#
# Additionally to the above, example also supports the following:
#
# - none
#
# ----------------------------------------------------------------------
# AUTO-DETECTION JOBS
# only one of them will run (they have the same name)

保存: Ctrl + o リターン
終了: Ctrl + x

debug 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/python.d.plugin freqmode debug trace
Ctrl + c > 停止
Ctrl + d > ログアウト

登録 

$ sudo /etc/netdata/edit-config python.d.conf

末尾に追記 

freqmode: yes

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Module 環境センサ

I2C

有効化 

メニュー→設定→Raspberry Piの設定→インターフェイスタブ→I2C有効にチェック
再起動

Netdataをグループi2cに追加 

$ sudo adduser netdata i2c

再起動 

$ sudo reboot

BME280

ＢＭＥ２８０使用　温湿度・気圧センサモジュールキット: 秋月電子通商

配線

J3の半田付けなし
BME280 Raspberry Pi
VDD Pin1 3.3V Pin1
GND Pin2 GND Pin6
CSB Pin3 3.3V Pin1
SDI Pin4 GPIO2 Pin3
SDO Pin5 GND Pin6
SCK Pin6 GPIO3 Pin5

確認 

$ sudo i2cdetect -y 1
76番があればOK

新規作成 

$ cd ~
$ sudo nano bme280.py

ソース 

#coding: utf-8

#from smbus2 import SMBus
from smbus import SMBus
import time

bus_number = 1
i2c_address = 0x76

bus = SMBus(bus_number)

digT = []
digP = []
digH = []

t_fine = 0.0


def writeReg(reg_address, data):
    bus.write_byte_data(i2c_address, reg_address, data)


def get_calib_param():
    calib = []

    for i in range(0x88, 0x88 + 24):
        calib.append(bus.read_byte_data(i2c_address, i))
    calib.append(bus.read_byte_data(i2c_address, 0xA1))
    for i in range(0xE1, 0xE1 + 7):
        calib.append(bus.read_byte_data(i2c_address, i))

    digT.append((calib[1] << 8) | calib[0])
    digT.append((calib[3] << 8) | calib[2])
    digT.append((calib[5] << 8) | calib[4])
    digP.append((calib[7] << 8) | calib[6])
    digP.append((calib[9] << 8) | calib[8])
    digP.append((calib[11] << 8) | calib[10])
    digP.append((calib[13] << 8) | calib[12])
    digP.append((calib[15] << 8) | calib[14])
    digP.append((calib[17] << 8) | calib[16])
    digP.append((calib[19] << 8) | calib[18])
    digP.append((calib[21] << 8) | calib[20])
    digP.append((calib[23] << 8) | calib[22])
    digH.append(calib[24])
    digH.append((calib[26] << 8) | calib[25])
    digH.append(calib[27])
    digH.append((calib[28] << 4) | (0x0F & calib[29]))
    digH.append((calib[30] << 4) | ((calib[29] >> 4) & 0x0F))
    digH.append(calib[31])

    for i in range(1, 2):
        if digT[i] & 0x8000:
            digT[i] = (-digT[i] ^ 0xFFFF) + 1

    for i in range(1, 8):
        if digP[i] & 0x8000:
            digP[i] = (-digP[i] ^ 0xFFFF) + 1

    for i in range(0, 6):
        if digH[i] & 0x8000:
            digH[i] = (-digH[i] ^ 0xFFFF) + 1


def readData():
    data = []
    for i in range(0xF7, 0xF7 + 8):
        data.append(bus.read_byte_data(i2c_address, i))
    pres_raw = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4)
    temp_raw = (data[3] << 12) | (data[4] << 4) | (data[5] >> 4)
    hum_raw = (data[6] << 8) | data[7]

    t = compensate_T(temp_raw)
    p = compensate_P(pres_raw)
    h = compensate_H(hum_raw)
    return t, h, p


def compensate_P(adc_P):
    global t_fine
    pressure = 0.0

    v1 = (t_fine / 2.0) - 64000.0
    v2 = (((v1 / 4.0) * (v1 / 4.0)) / 2048) * digP[5]
    v2 = v2 + ((v1 * digP[4]) * 2.0)
    v2 = (v2 / 4.0) + (digP[3] * 65536.0)
    v1 = (((digP[2] * (((v1 / 4.0) * (v1 / 4.0)) / 8192)) / 8) +
          ((digP[1] * v1) / 2.0)) / 262144
    v1 = ((32768 + v1) * digP[0]) / 32768

    if v1 == 0:
        return 0
    pressure = ((1048576 - adc_P) - (v2 / 4096)) * 3125
    if pressure < 0x80000000:
        pressure = (pressure * 2.0) / v1
    else:
        pressure = (pressure / v1) * 2
    v1 = (digP[8] * (((pressure / 8.0) * (pressure / 8.0)) / 8192.0)) / 4096
    v2 = ((pressure / 4.0) * digP[7]) / 8192.0
    pressure = pressure + ((v1 + v2 + digP[6]) / 16.0)
    pressure = pressure / 100.0
    return pressure


def compensate_T(adc_T):
    global t_fine
    v1 = (adc_T / 16384.0 - digT[0] / 1024.0) * digT[1]
    v2 = (adc_T / 131072.0 - digT[0] / 8192.0) * (adc_T / 131072.0 -
                                                  digT[0] / 8192.0) * digT[2]
    t_fine = v1 + v2
    temperature = t_fine / 5120.0
    return temperature


def compensate_H(adc_H):
    global t_fine
    var_h = t_fine - 76800.0
    if var_h != 0:
        var_h = (adc_H - (digH[3] * 64.0 + digH[4] / 16384.0 * var_h)) * (
            digH[1] / 65536.0 * (1.0 + digH[5] / 67108864.0 * var_h *
                                 (1.0 + digH[2] / 67108864.0 * var_h)))
    else:
        return 0
    var_h = var_h * (1.0 - digH[0] * var_h / 524288.0)
    if var_h > 100.0:
        var_h = 100.0
    elif var_h < 0.0:
        var_h = 0.0
    return var_h


def setup():
    osrs_t = 1  # Temperature oversampling x 1
    osrs_p = 1  # Pressure oversampling x 1
    osrs_h = 1  # Humidity oversampling x 1
    mode = 3  # Normal mode
    t_sb = 5  # Tstandby 1000ms
    filter = 0  # Filter off
    spi3w_en = 0  # 3-wire SPI Disable

    ctrl_meas_reg = (osrs_t << 5) | (osrs_p << 2) | mode
    config_reg = (t_sb << 5) | (filter << 2) | spi3w_en
    ctrl_hum_reg = osrs_h

    writeReg(0xF2, ctrl_hum_reg)
    writeReg(0xF4, ctrl_meas_reg)
    writeReg(0xF5, config_reg)


setup()
get_calib_param()

if __name__ == '__main__':
    try:
        readData()
    except KeyboardInterrupt:
        pass

保存: Ctrl + o リターン
終了: Ctrl + x

TSL2561

Adafruit TSL2561 デジタル光センサ - スイッチサイエンス

配線

TSL2561 Raspberry Pi
3vo Pin3 3.3V Pin1
SDA Pin6 GPIO2 Pin3
SCL Pin7 GPIO3 Pin5
GND Pin2 GND Pin6

確認 

$ sudo i2cdetect -y 1
39番があればOK

新規作成 

$ cd ~
$ sudo nano tsl2561.py

ソース 

#! /usr/bin/python2
# coding: UTF-8

import smbus
import time
import math

bus = smbus.SMBus(1)  # I2cバス番号
address = 0x39  # I2Cアドレス
command = 0x00

# i2c データ出力 1byte
def write(regist, value):
    bus.write_byte_data(address, regist, value)


# i2c データ読み込み 1byte
def read(regist):
    value = bus.read_byte_data(address, regist)
    return value


# i2c データ読み込み ブロック
def blockread(regist, num):
    value = bus.read_i2c_block_data(address, regist, num)
    return value


def ratio_calc(ambient, ir):
    # Avoid division by zero
    if float(ambient) == 0:
        ratio = 9999
    else:
        ratio = ir / float(ambient)
    return ratio


def init():
    # device enable
    write(0x80, 0x03)
    power = 0x03
    while power != 0x03:
        power = read(0x80) & 0x03
        print("{0:02x}".format(power))
    write(0x81, 0x11)


def read_lux():
    value0 = blockread(0xAC, 2)
    ch0 = 256 * value0[1] + value0[0]
    value1 = blockread(0xAE, 2)
    ch1 = 256 * value1[1] + value1[0]
    ratio = ratio_calc(ch0, ch1)
    if (ratio >= 0) & (ratio <= 0.52):
        lux = (0.0315 * ch0) - (0.0593 * ch0 * (ratio ** 1.4))
    elif ratio <= 0.65:
        lux = (0.0229 * ch0) - (0.0291 * ch1)
    elif ratio <= 0.80:
        lux = (0.0157 * ch0) - (0.018 * ch1)
    elif ratio <= 1.3:
        lux = (0.00338 * ch0) - (0.0026 * ch1)
    elif ratio > 1.3:
        lux = 0
    return lux


def main():
    init()
    counter = 0
    lux = read_lux()
    print("lux={0:f}".format(lux))


if __name__ == "__main__":
    main()

保存: Ctrl + o リターン
終了: Ctrl + x

Plugin

python.d.plugin - Netdata Documentation

EnvSensors.chart.py 

$ sudo nano /usr/libexec/netdata/python.d/EnvSensors.chart.py

ソース 

# -*- coding: utf-8 -*-
# Description: example netdata python.d module
# Author: Pawel Krupa (paulfantom)

import sys

sys.path.append("/home/pi/")
import bme280
import tsl2561
from bases.FrameworkServices.ExecutableService import ExecutableService

# update_every = 1
# priority = 60000
# retries = 60

ORDER = ["temperature", "humidity", "pressure", "lux"]

CHARTS = {
    "temperature": {
        "options": [
            None,
            "temperature",
            "℃",
            "temperature",
            "environment.temperature",
            "line",
        ],
        "lines": [["temp", "temperature", "absolute", 1, 100]],
    },
    "humidity": {
        "options": [None, "humidity", "％", "humidity", "environment.humidity", "line"],
        "lines": [["hum", "humidity", "absolute", 1, 100]],
    },
    "pressure": {
        "options": [
            None,
            "pressure",
            "hPa",
            "pressure",
            "environment.pressure",
            "line",
        ],
        "lines": [["press", "pressure", "absolute", 1, 100]],
    },
    "lux": {
        "options": [None, "lux", "lux", "lux", "environment.lux", "line"],
        "lines": [["lux", "lux", "absolute", 1, 100]],
    },
}


class Service(ExecutableService):
    def __init__(self, configuration=None, name=None):
        ExecutableService.__init__(self, configuration=configuration, name=name)
        self.order = ORDER
        self.definitions = CHARTS

    def check(self):
        return True

    def _get_data(self):
        try:
            raw01 = bme280.readData()
            raw02 = tsl2561.read_lux()
            return {
                "temp": raw01[0] * 100,
                "hum": raw01[1] * 100,
                "press": raw01[2] * 100,
                "lux": raw02 * 100,
            }
        except (ValueError, AttributeError):
            return None

保存: Ctrl + o リターン
終了: Ctrl + x

EnvSensors.conf 

$ sudo nano /usr/lib/netdata/conf.d/python.d/EnvSensors.conf

ソース 

# netdata python.d.plugin configuration for example
#
# This file is in YaML format. Generally the format is:
#
# name: value
#
# There are 2 sections:
#  - global variables
#  - one or more JOBS
#
# JOBS allow you to collect values from multiple sources.
# Each source will have its own set of charts.
#
# JOB parameters have to be indented (using spaces only, example below).

# ----------------------------------------------------------------------
# Global Variables
# These variables set the defaults for all JOBs, however each JOB
# may define its own, overriding the defaults.

# update_every sets the default data collection frequency.
# If unset, the python.d.plugin default is used.
update_every: 1

# priority controls the order of charts at the netdata dashboard.
# Lower numbers move the charts towards the top of the page.
# If unset, the default for python.d.plugin is used.
priority: 60000

# retries sets the number of retries to be made in case of failures.
# If unset, the default for python.d.plugin is used.
# Attempts to restore the service are made once every update_every
# and only if the module has collected values in the past.
retries: 60

# ----------------------------------------------------------------------
# JOBS (data collection sources)
#
# The default JOBS share the same *name*. JOBS with the same name
# are mutually exclusive. Only one of them will be allowed running at
# any time. This allows autodetection to try several alternatives and
# pick the one that works.
#
# Any number of jobs is supported.
#
# All python.d.plugin JOBS (for all its modules) support a set of
# predefined parameters. These are:
#
# job_name:
#     name: myname     # the JOB's name as it will appear at the
#                      # dashboard (by default is the job_name)
#                      # JOBs sharing a name are mutually exclusive
#     update_every: 1  # the JOB's data collection frequency
#     priority: 60000  # the JOB's order on the dashboard
#     retries: 5       # the JOB's number of restoration attempts
#
# Additionally to the above, example also supports the following:
#
# - none
#
# ----------------------------------------------------------------------
# AUTO-DETECTION JOBS
# only one of them will run (they have the same name)

保存: Ctrl + o リターン
終了: Ctrl + x

変なので再起動 

$ sudo reboot

debug 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/python.d.plugin EnvSensors debug trace

登録 

$ sudo /etc/netdata/edit-config python.d.conf

末尾に追記 

EnvSensors: yes

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Module 放射線センサ

I2C

省略

PocketGeiger

組込版ポケットガイガーType5 - スイッチサイエンス

配線
ポケットガイガーType5インタフェース仕様 RADIATION WATCH: 専門家向け資料

PocketGeiger Raspberry Pi
+V Pin1 3V3 Pin17
GND Pin2 GND Pin14
SIG Pin3 GPIO24 Pin18
NS Pin5 GPIO23 Pin16

インストール
GitHub - MonsieurV/PiPocketGeiger 

$ cd ~
$ git clone https://github.com/MonsieurV/PiPocketGeiger.git
$ cd PiPocketGeiger
$ python setup.py build
$ sudo python setup.py install

確認 

$ cd examples
$ python console_logger.py

REST API

新規作成 

$ cd ~
$ sudo nano pocketgeiger.py

ソース 

import json
import threading
import time
from PiPocketGeiger import RadiationWatch
from http.server import BaseHTTPRequestHandler, HTTPServer

response = {"uSvh": 0.0, "duration": 0.0, "uSvhError": 0, "cpm": 0}


def func1():
    with RadiationWatch(24, 23) as radiationWatch:
        while 1:
            global response
            response = json.dumps(radiationWatch.status())
            time.sleep(5)


class HelloHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header("Content-type", "application/json")
        self.end_headers()
        self.wfile.write(response.encode("utf-8"))


if __name__ == "__main__":
    thread_1 = threading.Thread(target=func1)
    thread_1.start()

    server_address = ("", 50000)
    httpd = HTTPServer(server_address, HelloHandler)
    httpd.serve_forever()

保存: Ctrl + o リターン
終了: Ctrl + x

エラーが出てるので 

$ sudo pip3 install PiPocketGeiger

自動起動設定 

$ sudo nano /etc/rc.local

末尾のexit 0手前に追記 

python3 /home/pi/pocketgeiger.py

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo reboot

確認 192.168.1.187の場合 

http://127.0.0.1:50000
http://192.168.1.187:50000

Plugin

python.d.plugin - Netdata Documentation

RadiationDetector.chart.py 

$ sudo nano /usr/libexec/netdata/python.d/RadiationDetector.chart.py

ソース 

# -*- coding: utf-8 -*-

from bases.FrameworkServices.UrlService import UrlService
import json

# update_every = 1
# priority = 60000
# retries = 60

ORDER = ["radiation"]

CHARTS = {
    "radiation": {
        "options": [None, "radiation", "uSvh", "radiation", "radiation", "line"],
        "lines": [["uSvh", "radiation", "absolute", 1, 1000]],
    }
}


class Service(UrlService):
    def __init__(self, configuration=None, name=None):
        UrlService.__init__(self, configuration=configuration, name=name)
        self.url = "http://localhost:50000"
        self.order = ORDER
        self.definitions = CHARTS

    def _get_data(self):
        try:
            raw = self._get_raw_data()
        except AttributeError:
            return None

        try:
            parsed = json.loads(raw)
            return {"uSvh": parsed["uSvh"] * 1000}
        except:
            return None

保存: Ctrl + o リターン
終了: Ctrl + x

RadiationDetector.conf 

$ sudo nano /usr/lib/netdata/conf.d/python.d/RadiationDetector.conf

ソース 

# netdata python.d.plugin configuration for example
#
# This file is in YaML format. Generally the format is:
#
# name: value
#
# There are 2 sections:
#  - global variables
#  - one or more JOBS
#
# JOBS allow you to collect values from multiple sources.
# Each source will have its own set of charts.
#
# JOB parameters have to be indented (using spaces only, example below).

# ----------------------------------------------------------------------
# Global Variables
# These variables set the defaults for all JOBs, however each JOB
# may define its own, overriding the defaults.

# update_every sets the default data collection frequency.
# If unset, the python.d.plugin default is used.
update_every: 1

# priority controls the order of charts at the netdata dashboard.
# Lower numbers move the charts towards the top of the page.
# If unset, the default for python.d.plugin is used.
priority: 60000

# retries sets the number of retries to be made in case of failures.
# If unset, the default for python.d.plugin is used.
# Attempts to restore the service are made once every update_every
# and only if the module has collected values in the past.
retries: 60

# ----------------------------------------------------------------------
# JOBS (data collection sources)
#
# The default JOBS share the same *name*. JOBS with the same name
# are mutually exclusive. Only one of them will be allowed running at
# any time. This allows autodetection to try several alternatives and
# pick the one that works.
#
# Any number of jobs is supported.
#
# All python.d.plugin JOBS (for all its modules) support a set of
# predefined parameters. These are:
#
# job_name:
#     name: myname     # the JOB's name as it will appear at the
#                      # dashboard (by default is the job_name)
#                      # JOBs sharing a name are mutually exclusive
#     update_every: 1  # the JOB's data collection frequency
#     priority: 60000  # the JOB's order on the dashboard
#     retries: 5       # the JOB's number of restoration attempts
#
# Additionally to the above, example also supports the following:
#
# - none
#
# ----------------------------------------------------------------------
# AUTO-DETECTION JOBS
# only one of them will run (they have the same name)

保存: Ctrl + o リターン
終了: Ctrl + x

変なので再起動 

$ sudo reboot

debug 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/python.d.plugin RadiationDetector debug trace

登録 

$ sudo /etc/netdata/edit-config python.d.conf

末尾に追記 

RadiationDetector: yes

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

確認 

http://iot.local:19999

Email通知

email - Netdata Documentation

Streaming >> Parent(親)で設定

sSMTP

sSMTPの場合
Gmail（二段階認証）を設定 

$ sudo apt-get install ssmtp
$ sudo apt-get install mailutils

$ sudo nano /etc/ssmtp/ssmtp.conf

全てコメントアウトし末尾に追記
アプリパスワードを発行しpasswordに貼り付け

root=xxxxx@gmail.com
mailhub=smtp.gmail.com:587
AuthUser=xxxxx@gmail.com
AuthPass=password
UseSTARTTLS=YES

送信テスト 

$ mail *****@gmail.com
Cc:
Subject:test.
This is test.
「.」もしくはCtrl+Dで送信

登録

$ sudo /etc/netdata/edit-config health_alarm_notify.conf

保存: Ctrl + o リターン
終了: Ctrl + x

確認 

$ sudo su -s /bin/bash netdata
$ /usr/libexec/netdata/plugins.d/alarm-notify.sh test [ROLE]

再起動 

$ sudo service netdata restart

停止

停止する場合 

$ sudo nano /etc/netdata/health_alarm_notify.conf

設定 

#SEND_EMAIL="YES"
SEND_EMAIL="NO"

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service netdata restart

Update

netdata/UPDATE.md netdata/netdata · GitHub 

$ bash <(curl -Ss https://my-netdata.io/kickstart.sh)

Uninstall

netdata/UNINSTALL.md netdata/netdata · GitHub 

$ sudo /usr/libexec/netdata-uninstaller.sh --yes --env /etc/netdata/.environment

Custom dashboard

Custom dashboards - Netdata Documentation 

ソース
http://dz.plala.jp/iot-monitor/
http://dz.plala.jp/iot-monitor/jquery.easypiechart.js

.htaccess 

<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
 
#古いブラウザ対策
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch \bMSIE\s(7|8) !no-gzip !gzip-only-text/html
 
#画像は圧縮しない GIF、JPEG、PNG、ICO
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|ico)$ no-gzip dont-vary

#圧縮するファイル
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/js
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/atom_xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-httpd-php
AddOutputFilterByType DEFLATE application/x-font-ttf
AddOutputFilterByType DEFLATE application/x-font-woff
AddOutputFilterByType DEFLATE application/x-font-opentype
AddOutputFilterByType DEFLATE application/json
</IfModule>

消費電力削減

USB電源OFF

GitHub - mvp/uhubctl: uhubctl - USB hub per-port power control
インストール 

$ sudo apt-get install libusb-1.0-0-dev
$ cd ~
$ git clone https://github.com/mvp/uhubctl.git
$ cd uhubctl
$ make
$ sudo make install

ON/OFF確認

$ sudo uhubctl

USBポートの電源を切る(LANポート以外)

  • 左に LAN ポートがある状態で、左上が Port2、左下が Port3、右上が Port 4、右下が Port5
  • -p 2で4ポート全て停止してるように見える Model B+, 2 B, 3 B (port 2 only)？
$ sudo uhubctl -a off -p 2
$ sudo uhubctl -a off -p 3
$ sudo uhubctl -a off -p 4
$ sudo uhubctl -a off -p 5

USBポートの電源を入れる(LANポート以外) 

$ sudo uhubctl -a on -p 2
$ sudo uhubctl -a on -p 3
$ sudo uhubctl -a on -p 4
$ sudo uhubctl -a on -p 5

自動起動設定 

$ sudo nano /etc/rc.local

末尾のexit 0手前に追記 

sudo uhubctl -a off -p 2
sudo uhubctl -a off -p 3
sudo uhubctl -a off -p 4
sudo uhubctl -a off -p 5

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

HDMI電源OFF

VNC接続に影響なし

自動起動設定 

$ sudo nano /etc/rc.local

末尾のexit 0手前に追記 

sudo /opt/vc/bin/tvservice -o

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

LED電源OFF

多分、コレを設定すると「Module 電力不足」が機能しなくなる

PWR-LEDとACT-LEDを電源OFF

自動起動設定 

$ sudo nano /etc/rc.local

末尾のexit 0手前に追記 

echo none | sudo tee /sys/class/leds/led0/trigger
echo none | sudo tee /sys/class/leds/led1/trigger
echo 0 | sudo tee /sys/class/leds/led1/brightness

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

点灯させる場合 

$ echo mmc0 | sudo tee /sys/class/leds/led0/trigger
$ echo input | sudo tee /sys/class/leds/led1/trigger
$ echo 255 | sudo tee /sys/class/leds/led1/brightness

クロックダウン

CPUfreq ガバナーの使用 - Red Hat Customer Portal

performance 最高クロック周波数を使用するように強制
節電する利点なし
powersave 最低クロック周波数を使用するように強制
最大の節電を実現
全負荷には不向き 低活動向き
ondemand ※デフォルト CPU負荷に応じ動的に動作周波数を変更
積極的にクロック周波数を調節
conservative CPU負荷に応じ動的に動作周波数を変更
適切と判断するクロック周波数にゆっくり調節
電力消費に著しく貢献する可能性あり

設定の確認 

$ grep "" /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

変更 OSの再起動でondemand ※デフォルトに戻るので設定を変え様子を見る 

$ echo "performance"| sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
$ echo "powersave"| sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
$ echo "ondemand"| sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
$ echo "conservative"| sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

インストール 

$ sudo apt-get install cpufrequtils

自動起動設定 

$ sudo nano /etc/init.d/cpufrequtils

変更 

ENABLE="true"
GOVERNOR="powersave"
MAX_SPEED="0"
MIN_SPEED="0"

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

セキュリティー

RaspberryPiでupdate/upgradeを自動化する。 - Qiita

Streaming >> Master に設定

インストール 

$ sudo apt-get update
$ sudo apt-get install unattended-upgrades

設定 

$ sudo nano /etc/apt/apt.conf.d/50unattended-upgrades

アップデート対象
Raspbian Stretchの場合 

        // "o=Debian,n=jessie";
        "o=Raspbian,n=stretch";

        // "o=Debian,a=stable";
        "o=Raspbian,a=stable";

メール通知 

//Unattended-Upgrade::Mail "root";
Unattended-Upgrade::Mail "メールアドレス";

再起動の許可 

//Unattended-Upgrade::Automatic-Reboot "false";

再起動の時間 

//Unattended-Upgrade::Automatic-Reboot-Time "02:00";

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

延命対策

nginx

設定 

$ sudo nano /etc/nginx/nginx.conf

変更 

       # access_log /var/log/nginx/access.log;
       # error_log /var/log/nginx/error.log;
       access_log off;
       error_log off;

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo service nginx restart

swap

Stretchの場合 

$ sudo dphys-swapfile swapoff
$ sudo systemctl stop dphys-swapfile
$ sudo systemctl disable dphys-swapfile

fstab

設定 

$ sudo nano /etc/fstab

nodiratime追記と末尾に追記
fstab - ArchWiki atime オプション 

PARTUUID=762cd6c9-02  /               ext4    defaults,noatime,nodiratime  0       1
tmpfs    /tmp                              tmpfs    defaults,noatime,nodiratime,mode=1777  0       0
tmpfs    /run/user/1000                    tmpfs    defaults,noatime,nodiratime,mode=1777  0       0
tmpfs    /home/pi/.cache/lxsession/LXDE-pi tmpfs    defaults,noatime,nodiratime,mode=1777  0       0
tmpfs    /var/lib/netdata                  tmpfs    defaults,noatime,nodiratime,mode=1777  0       0

保存: Ctrl + o リターン
終了: Ctrl + x

再起動 

$ sudo reboot

確認 

$ df -h

systemctl

確認 

$ systemctl list-unit-files -t service|grep enabled

rsyslog停止 

$ sudo systemctl stop rsyslog.service
$ sudo systemctl disable rsyslog.service
戻すなら
$ sudo systemctl enable rsyslog.service

bluetooth停止 

$ sudo systemctl stop hciuart.service
$ sudo systemctl stop bluetooth.service
$ sudo systemctl disable hciuart.service
$ sudo systemctl disable bluetooth.service
戻すなら
$ sudo systemctl enable hciuart.service
$ sudo systemctl enable bluetooth.service

再起動 

$ sudo reboot

確認 

$ systemctl list-unit-files -t service
$ systemctl list-unit-files -t service|grep disabled

folder2ram

GitHub - bobafetthotmail/folder2ram

インストール 

$ sudo wget -O /sbin/folder2ram https://raw.githubusercontent.com/bobafetthotmail/folder2ram/master/debian_package/sbin/folder2ram
$ sudo chmod +x /sbin/folder2ram
$ sudo folder2ram -configure
will now open the configuration file with your favourite text editor
write its name and press enter (nano, vim, gedit are the most common)
リターン

$ sudo nano /etc/folder2ram/folder2ram.conf

末尾に追記 

tmpfs		/var/log
tmpfs		/var/tmp
tmpfs		/var/spool
tmpfs		/var/cache/samba

保存: Ctrl + o > リターン
終了: Ctrl + x 

$ sudo folder2ram -mountall
$ sudo folder2ram -enablesystemd

再起動 

$ sudo reboot

確認 

$ df -h

他の書き込みを探す場合 

$ cd /
$ sudo find . -path "./proc" -prune -o -path "./sys" -prune -o -type f -name "*.*" -mmin -5 -ls

journald

man journald.conf の訳 

$ sudo nano /etc/systemd/journald.conf

追記 

Storage=none

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

sysctl

Netdataでsoftnetの警告が必ず出る 

過去10分間に、ksoftirqがsysctl net.core.netdev_budgetまたはnet.core.netdev_budget_usecsを使い果たし作業が残っている。これはパケットがドロップされる原因となる可能性があります。

Red Hat Enterprise Linux Network Performance Tuning Guide
Can't fix persistent 'netdev budget ran outs' with 45k alerts, need help #4624

設定 

$ sudo nano /etc/sysctl.conf

末尾に追記 

net.core.netdev_budget_usecs=20000

保存: Ctrl + o > リターン
終了: Ctrl + x

再起動 

$ sudo reboot

更新履歴

  • 2020/09/04 Module CPU周波数モード, CPUコア電圧, CPUスロットリング 修正しました
  • 2019.06.12 Custom dashboard IoT Monitor v1.0 公開しました
  • 2019.05.08 Custom dashboard IoT Monitor のiPhone・iPad対応
  • 2019.05.03 書き直し
  • 2017.08.27 書き直し
  • 2017.05.15 公開
「http://dz.plala.jp/wiki/index.php?title=RaspberryPiでNetdata&oldid=35235」から取得