Avant le début
Vous devriez déjà avoir Node-Red installé avec le nœud moment. Différentes méthodes d'installation sont décrites sur le site développeur /nodered.org/docs/getting-started /
Importez le code de flux dans votre Node-RED et vous aurez tous les nœuds comme sur l'image
[{"id":"ff8e6c15.1db9e","type":"inject","z":"c20c2bf8.f5bba8","name":"1 min","topic":"","payload":"","payloadType":"date","repeat":"60","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":240,"wires":[["aa173003.800e9"]]},{"id":"fa2dd78f.64ef58","type":"http request","z":"c20c2bf8.f5bba8","name":"name.com","method":"GET","ret":"txt","url":"https://name.com","tls":"","x":210,"y":500,"wires":[["3c3eb473.fddb4c","6c05ab54.c151a4"]]},{"id":"3c3eb473.fddb4c","type":"switch","z":"c20c2bf8.f5bba8","name":"not 200 respons","property":"statusCode","propertyType":"msg","rules":[{"t":"neq","v":"200","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":440,"y":520,"wires":[["5a06f9e1.e303d8","cc3ecdf3.6ce24"]]},{"id":"6c05ab54.c151a4","type":"switch","z":"c20c2bf8.f5bba8","name":"found word on web","property":"payload","propertyType":"msg","rules":[{"t":"cont","v":"ca-pub-1234545647","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":450,"y":480,"wires":[["834b9f2b.cfb89","cc3ecdf3.6ce24"]]},{"id":"107dec81.7d3953","type":"function","z":"c20c2bf8.f5bba8","name":"web up","func":"\nreturn {\n payload: ` ${msg.responseUrl} its OK`\n}","outputs":1,"noerr":0,"x":1140,"y":420,"wires":[["e3f88e59.88023"]]},{"id":"d5bf4f53.b8ae2","type":"function","z":"c20c2bf8.f5bba8","name":"web down","func":"\nreturn {\n payload: ` name.com it is DOWN at`\n}","outputs":1,"noerr":0,"x":1140,"y":620,"wires":[["300022a2.3d497e"]]},{"id":"ddeb8430.749ed8","type":"inject","z":"c20c2bf8.f5bba8","name":"","topic":"","payload":"","payloadType":"date","repeat":"1","crontab":"","once":false,"onceDelay":0.1,"x":250,"y":100,"wires":[["e82f93c1.0e89e"]]},{"id":"e82f93c1.0e89e","type":"moment","z":"c20c2bf8.f5bba8","name":"","topic":"","input":"","inputType":"msg","inTz":"Europe/Moscow","adjAmount":"0","adjType":"hours","adjDir":"add","format":"date","locale":"en_US","output":"time","outputType":"flow","outTz":"Europe/Moscow","x":460,"y":100,"wires":[[]]},{"id":"4c032cf4.424084","type":"file","z":"c20c2bf8.f5bba8","name":"Write www.log","filename":"/root/iot_data/www.log","appendNewline":true,"createDir":false,"overwriteFile":"false","x":1820,"y":480,"wires":[[]]},{"id":"834e384f.425cb8","type":"function","z":"c20c2bf8.f5bba8","name":"Add time to data","func":"var timenow=flow.get('time');\nvar downtimenow=flow.get('downmin')-5;\nmsg.payload = msg.payload + ' ' + timenow + '. Downtime: ' + downtimenow + 'min #myhost' ;\nreturn msg;","outputs":1,"noerr":0,"x":1640,"y":500,"wires":[["4c032cf4.424084","4c25ef47.71b94"]]},{"id":"e3f88e59.88023","type":"trigger","z":"c20c2bf8.f5bba8","op1":"","op2":"","op1type":"pay","op2type":"pay","duration":"0","extend":true,"units":"min","reset":"reset","bytopic":"all","name":"","x":1360,"y":420,"wires":[["e24a68a2.c83f58"]]},{"id":"300022a2.3d497e","type":"trigger","z":"c20c2bf8.f5bba8","op1":"","op2":"","op1type":"pay","op2type":"pay","duration":"0","extend":true,"units":"min","reset":"reset","bytopic":"all","name":"","x":1360,"y":620,"wires":[["419d4a24.ec1604","11c46064.1ffc7"]]},{"id":"aac1daf2.c77e18","type":"function","z":"c20c2bf8.f5bba8","name":"send reset","func":"\nreturn {\n payload: `reset`\n}","outputs":1,"noerr":0,"x":1150,"y":540,"wires":[["e3f88e59.88023"]]},{"id":"59f336.30325ccc","type":"function","z":"c20c2bf8.f5bba8","name":"send reset","func":"\nreturn {\n payload: `reset`\n}","outputs":1,"noerr":0,"x":1150,"y":480,"wires":[["300022a2.3d497e"]]},{"id":"5a06f9e1.e303d8","type":"counter","z":"c20c2bf8.f5bba8","name":"count to 10","init":"0","step":"1","lower":"0","upper":"10","mode":"increment","outputs":1,"x":690,"y":660,"wires":[["e93a8fe8.8bb23"]]},{"id":"323380d1.a71af","type":"switch","z":"c20c2bf8.f5bba8","name":"if its 3","property":"count","propertyType":"msg","rules":[{"t":"eq","v":"3","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":990,"y":660,"wires":[["d5bf4f53.b8ae2","aac1daf2.c77e18"]]},{"id":"24d1969a.a4e5da","type":"function","z":"c20c2bf8.f5bba8","name":"reset counter","func":"msg.reset = true; return msg","outputs":1,"noerr":0,"x":890,"y":440,"wires":[["5a06f9e1.e303d8"]]},{"id":"834b9f2b.cfb89","type":"counter","z":"c20c2bf8.f5bba8","name":"count to 10","init":"0","step":"1","lower":"0","upper":"10","mode":"increment","outputs":1,"x":670,"y":380,"wires":[["641f8b3.143cd74"]]},{"id":"440de7c7.eb6d48","type":"function","z":"c20c2bf8.f5bba8","name":"reset counter","func":"msg.reset = true; return msg","outputs":1,"noerr":0,"x":850,"y":580,"wires":[["834b9f2b.cfb89"]]},{"id":"1b410fb8.f2e8b","type":"switch","z":"c20c2bf8.f5bba8","name":"if its 5","property":"count","propertyType":"msg","rules":[{"t":"eq","v":"5","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":990,"y":380,"wires":[["107dec81.7d3953","59f336.30325ccc"]]},{"id":"641f8b3.143cd74","type":"switch","z":"c20c2bf8.f5bba8","name":"it its > 0","property":"count","propertyType":"msg","rules":[{"t":"gt","v":"0","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":840,"y":380,"wires":[["24d1969a.a4e5da","1b410fb8.f2e8b"]]},{"id":"e93a8fe8.8bb23","type":"switch","z":"c20c2bf8.f5bba8","name":"it its > 0","property":"count","propertyType":"msg","rules":[{"t":"gt","v":"0","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":840,"y":660,"wires":[["323380d1.a71af","440de7c7.eb6d48"]]},{"id":"e24a68a2.c83f58","type":"switch","z":"c20c2bf8.f5bba8","name":"not a on start web up message","property":"payload","propertyType":"msg","rules":[{"t":"neq","v":"Started!","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":1650,"y":420,"wires":[["834e384f.425cb8"]]},{"id":"2ef6b867.dd9328","type":"inject","z":"c20c2bf8.f5bba8","name":"","topic":"","payload":"Started!","payloadType":"str","repeat":"","crontab":"","once":true,"onceDelay":"","x":240,"y":160,"wires":[["e3f88e59.88023","24d1969a.a4e5da","440de7c7.eb6d48"]]},{"id":"f3ac9999.c58e48","type":"switch","z":"c20c2bf8.f5bba8","name":"Check if my Internet is up","property":"statusCode","propertyType":"msg","rules":[{"t":"eq","v":"200","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":230,"y":420,"wires":[["fa2dd78f.64ef58"]]},{"id":"aa173003.800e9","type":"http request","z":"c20c2bf8.f5bba8","name":"google.com","method":"GET","ret":"txt","url":"https://www.google.com/","tls":"","x":210,"y":320,"wires":[["f3ac9999.c58e48"]]},{"id":"cc3ecdf3.6ce24","type":"counter","z":"c20c2bf8.f5bba8","name":"count to 3000","init":"3","step":"1","lower":"0","upper":"3000","mode":"increment","outputs":1,"x":1360,"y":160,"wires":[["aeda28f4.55d248"]]},{"id":"419d4a24.ec1604","type":"function","z":"c20c2bf8.f5bba8","name":"reset counter","func":"msg.reset = true; return msg","outputs":1,"noerr":0,"x":1370,"y":240,"wires":[["cc3ecdf3.6ce24"]]},{"id":"e540e4d1.e10a98","type":"file","z":"c20c2bf8.f5bba8","name":"Write www.log","filename":"/root/iot_data/www.log","appendNewline":true,"createDir":false,"overwriteFile":"false","x":1820,"y":600,"wires":[[]]},{"id":"11c46064.1ffc7","type":"function","z":"c20c2bf8.f5bba8","name":"Add time to data","func":"var timenow=flow.get('time');\nmsg.payload = msg.payload + ' ' + timenow + ' #myhost';\nreturn msg;","outputs":1,"noerr":0,"x":1600,"y":620,"wires":[["e540e4d1.e10a98","c51c74c3.bdf448"]]},{"id":"aeda28f4.55d248","type":"function","z":"c20c2bf8.f5bba8","name":"Set downmin","func":"flow.set(\"downmin\", msg.count);","outputs":1,"noerr":0,"x":1550,"y":160,"wires":[[]]},{"id":"c51c74c3.bdf448","type":"twitter out","z":"c20c2bf8.f5bba8","twitter":"","name":"Tweet","x":1790,"y":640,"wires":[]},{"id":"4c25ef47.71b94","type":"twitter out","z":"c20c2bf8.f5bba8","twitter":"","name":"Tweet","x":1790,"y":520,"wires":[]}]Que fait ce flux
- Vérifie s'il y a un accès Internet
- Vérifie s'il y a accès au site
- Si aucun accès / tweet restauré à ce sujet
- Compte depuis combien de temps le site est inactif
- Écrit un journal dans un fichier
Ce qui doit être configuré
- nœud 1: vous devez écrire l'adresse du site pour la surveillance
- Nœuds 2: vous devez définir la première partie du texte pour le tweet
- nœuds 3: Ici, des données temporaires sont ajoutées au tweet, vous pouvez également ajouter votre propre texte
- - nœuds 4: Ici, vous devez définir votre compte Twitter et le dossier du fichier journal après les modifications, n'oubliez pas de cliquer sur Déployer
Comment ça fonctionne
Nous partons du haut à gauche
- [timestamp] node - écrit l'heure dans la variable de temps
- node [Started!] - réinitialise les compteurs d'événements au début, et cocks déclenche
- node [1 min] - démarre le processus de surveillance toutes les minutes.
Tout d'abord, nous allons vérifier si les nœuds Internet [google.com]> [Vérifier si mon Internet est actif] si nous recevons une réponse de 200, alors Internet fonctionne pour nous, sinon, soit Internet ne fonctionne pas pour nous, soit google.com est allongé
Ensuite, nous vérifions notre site [name.com]> ([mot trouvé sur le web] [not 200 respons]). Ici, nous ne pouvons pas simplement attendre une réponse 200, elle peut également être émise par des pages stub (par exemple, non-paiement pour l'hébergement) - par conséquent, le site est considéré comme fonctionnel si un mot est trouvé dans son contenu - j'ai cet identifiant Google. S'il n'y a pas de réponse 200 (le site ne fonctionne pas du tout ou donne 404 erreurs, etc.), alors nous considérons que le site ne fonctionne pas.
Ensuite, nous commençons à compter ces événements, si 3 messages sur un site inopérant arrivent d'affilée, alors il est transmis au déclencheur - qui saute un message et est bloqué - afin qu'il n'y ait pas beaucoup de tweets sur le même. Pour que le déclencheur envoie un tweet pour que tout fonctionne correctement, vous avez besoin de 5 messages d'affilée sur le travail du site. Les compteurs de messages se réinitialisent lorsqu'un message se produit, cela fournit un décompte de 3 à 5 messages d'affilée.
La gâchette est déclenchée lorsque l'opposé s'ouvre pour recevoir.