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Auto restart Node-RED

Created by: ks1905 at: 2/28/2022 9:18 AM (4 Replies)

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2/28/2022 9:18 AM	Rate (0)
ks1905 Advanced Member Joined: 3/18/2021 Last visit: 6/19/2023 Posts: 31 Rating: (1)	Hello, I am using the IOT 2050 with the Example Image and Node-RED as my OPC UA Client. To test my current flows I'm using the Prosys OPC UA Simulation Server. Tonight my OPC UA Client lost the connecting to the OPC server and, I think after to many injections to the flow without having a connection, my node-RED session closed. This morning I wanted to check my flows and it said "lost connection to server, reconnecting" Is it possible to automatically restart node red, if it shuts down? The IOT has to run 24/7 and if such an problem occurs, node-RED should restart automatically. Thanks in advance Kerem

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2/28/2022 10:05 AM	Rate (0)
Ursg Advanced Member Joined: 11/15/2018 Last visit: 11/13/2023 Posts: 20 Rating: (2)	unfortunately you have to do it 'by hand': nano /usr/lib/systemd/system/node-red.service -->> [Service] insert line: Restart=on-failure systemctl daemon-reload

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This contribution was helpful to 2 thankful Users bergmanu ks1905

2/28/2022 10:45 AM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 12/4/2023 Posts: 3295 Rating: (368)	Hi, restarting on failure is fine, but does not solve the problem why node-red crashed. After the next crash, please check cat /var/log/syslog \| grep node for error messages. Best regards!

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This contribution was helpful to 1 thankful Users ks1905

2/28/2022 12:00 PM	Rate (0)
ks1905 Advanced Member Joined: 3/18/2021 Last visit: 6/19/2023 Posts: 31 Rating: (1)	Ursg unfortunately you have to do it 'by hand': nano /usr/lib/systemd/system/node-red.service -->> [Service] insert line: Restart=on-failure systemctl daemon-reload Okay, thank you. So the service file has to look like this? [Unit] Description=Node-RED After=syslog.target network.target [Service] Type=idle ExecStart=/usr/bin/node-red -u %h/.node-red StandardOutput=syslog Restart=on-failure [Install] WantedBy=multi-user.target After I do this, node red restart automatically? And what does systemctl daemon-reload mean?

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3/1/2022 3:40 PM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 12/4/2023 Posts: 3295 Rating: (368)	Hi, yes, exactly. There is some more options to set to optimize the behavior (see here). ks1905 And what does systemctl daemon-reload mean? This is simply updating the services after changes during operation. Best regards!

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This contribution was helpful to 1 thankful Users ks1905

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