Kanke,
This post was over a year old so the change of a reply is small.
However, I had a similar requirement and got it to work for my Debian based box. (Not a Pi)
This might work for you, but I am not sure what OS you are running.
Try this:
[{"id":"a7eb189d.f5e538","type":"comment","z":"cd4d0228.faf14","name":"Warm reboot","info":"","x":410,"y":310,"wires":[]},{"id":"a06415d6.7ed3c8","type":"function","z":"cd4d0228.faf14","name":"Request Token","func":"msg.payload = {\n \"client_id\": \"node-red-editor\",\n \"grant_type\": \"password\",\n \"scope\": \"*\",\n \"username\": \"engineer\",\n \"password\": \"Pa$$w0rd\"\n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":420,"y":360,"wires":[["47aa4d07.5bae94"]]},{"id":"649f96c6.bc9128","type":"inject","z":"cd4d0228.faf14","name":"Manual reload","repeat":"","crontab":"","once":false,"onceDelay":"","topic":"","payload":"","payloadType":"str","x":210,"y":360,"wires":[["a06415d6.7ed3c8"]]},{"id":"47aa4d07.5bae94","type":"http request","z":"cd4d0228.faf14","name":"Token","method":"POST","ret":"txt","paytoqs":"ignore","url":"http://localhost:1880/auth/token","tls":"","persist":false,"proxy":"","authType":"","x":570,"y":360,"wires":[["d69beb8b.7008a8"]],"info":"Note:\nEnsure the path is correct\nif httpAdminRoot: '/admin' is activated then \nthis needs to be added to\nhttp://localhost:1880/"},{"id":"d69beb8b.7008a8","type":"function","z":"cd4d0228.faf14","name":"Confirm token","func":"// get the status of the request\nvar status = msg.statusCode;\n\nvar token = '';\nmsg.headers ={};\n\n//let node = feedback;\n\nswitch(status){\n case 200:\n node.log(\"Secure restart\");\n token = JSON.parse(msg.payload);\n token = 'Bearer '+token.access_token;\n msg.headers = {\n \"Authorization\": token,\n \"Node-RED-Deployment-Type\":\"reload\"\n }\n//msg.payload =\"\";\n break;\n case 204:\n node.log(\"Secure without restart\");\n break;\n case 400:\n node.warn(\"Bad request\");\n break;\n case 401:\n node.warn(\"Not authorized\");\n break;\n case 403:\n node.warn(\"Forbidden\");\n break;\n case 404:\n node.log(\"Unsecure restart\");\n msg.headers = {\n \"Node-RED-Deployment-Type\":\"reload\"\n }\n break;\n case 409:\n node.warn(\"Version mismatch\");\n break;\n case 500:\n node.error(\"Server Error\");\n break;\n default:\n node.warn(\"Unknown Error\");\n break;\n}\n\nmsg.payload = \"\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":720,"y":360,"wires":[["ccd455c1.f34318"]],"info":"Restart of Node-Red flows.\nWill check if the action needs security or not.\nNote: if the first 5 attemps return a statuscode 403 'forbidden'\nthen the server will break and only way to recover is then to\nrestart the service"},{"id":"ccd455c1.f34318","type":"http request","z":"cd4d0228.faf14","name":"Restart","method":"POST","ret":"txt","paytoqs":"ignore","url":"http://localhost:1880/flows","tls":"","persist":false,"proxy":"","authType":"","x":880,"y":360,"wires":[[]],"info":"Note:\nEnsure the path is correct\nif httpAdminRoot: '/admin' is activated then \nthis needs to be added to\nhttp://localhost:1880/"}]
Ensure in the 'reload flows' you have the right credentials. In my example it is 'engineer' and 'Pa$$w0rd' . Change it to your credentials.
