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root権限でnode-red execブロックを実行するにはどうすればよいですか？rootとしてノードredからpythonスクリプトを実行する方法
私は2つのpythonスクリプト、camera.pyとrelay.pyを持っています。私はcamera.pyを実行することができますが、node-redからrelay.pyを実行することはできません。
"./camera.py"、 "sudo ./camera.py"、 "sudo ./relay.py 200"というコマンドラインで次のコマンドを実行できます。 "./relay.py 200"を実行できません。実行エラーが発生するためです。これは、通常はroot権限を必要とするSpiDevを使用しているためです。
node-red execブロックからは、エラーなしで次のコマンドを実行できます。 "camera.py"と "sudo camera.py"。 しかし、私は "relay.py 200"の実行方法を理解できません。ここ
はrelay.pyコードである：ここ
#!/usr/bin/python
import sys
import spidev
hexForm = format(int(sys.argv[1]),'#04x')
spiBus = 0
spiChannel = 0 #SPI Channel (CE0)
spi = spidev.SpiDev()
spi.open(spiBus,spiChannel)
to_send = hexForm
spi.xfer(to_send)
はノード赤流れである：
[{"id":"b77b1a31.7df568","type":"http in","z":"56302dc4.e31264","name":"RelayRequest","url":"/RelayRequest","method":"post","swaggerDoc":"","x":95,"y":197,"wires":[["78e73048.889a7","702908ee.357d18"]]},{"id":"ef17aada.044c18","type":"http response","z":"56302dc4.e31264","name":"Return","x":797,"y":207,"wires":[]},{"id":"37db2a8.1eeafd6","type":"exec","z":"56302dc4.e31264","command":"sudo python-scripts/relay.py","addpay":true,"append":"","useSpawn":"","timer":"","name":"ExecRelayScript","x":455,"y":250,"wires":[["cf28fa90.0d7c08","ef17aada.044c18"],["9b8b4782.ebc578"],["48066a13.83d884"]]},{"id":"9b8b4782.ebc578","type":"debug","z":"56302dc4.e31264","name":"stderror2","active":true,"console":"false","complete":"payload","x":648,"y":311,"wires":[]},{"id":"cf28fa90.0d7c08","type":"debug","z":"56302dc4.e31264","name":"stdout2","active":true,"console":"false","complete":"payload","x":812,"y":273,"wires":[]},{"id":"48066a13.83d884","type":"debug","z":"56302dc4.e31264","name":"return code2","active":true,"console":"false","complete":"payload","x":684,"y":361,"wires":[]},{"id":"78e73048.889a7","type":"function","z":"56302dc4.e31264","name":"function","func":"if(msg.req.body)\n{\n msg.payload = msg.req.body\n return msg;\n}\n","outputs":1,"noerr":0,"x":263,"y":251,"wires":[["37db2a8.1eeafd6","5f0cf4ac.3cb30c"]]},{"id":"5f0cf4ac.3cb30c","type":"debug","z":"56302dc4.e31264","name":"function out","active":true,"console":"false","complete":"payload","x":470,"y":164,"wires":[]},{"id":"702908ee.357d18","type":"debug","z":"56302dc4.e31264","name":"stdout2","active":true,"console":"false","complete":"req.body","x":301,"y":108,"wires":[]}]