implement 11.12 Health check

Author: devserkan

app.js

@@ -8,6 +8,12 @@ app.get('/version', (req, res) => {
   res.send('2')
 })
 
+app.get('/health', (req, res) => {
+  // eslint-disable-next-line no-constant-condition
+  if (true) throw('error...  ')
+  res.send('ok')
+})
+
 app.use(express.static('dist'))
 
 app.listen(PORT, () => {

fly.toml

@@ -22,6 +22,16 @@ primary_region = 'ams'
   min_machines_running = 0
   processes = ['app']
 
+[[http_service.checks]]
+  grace_period = "10s"
+  interval = "30s"
+  method = "GET"
+  timeout = "5s"
+  path = "/health"
+
+[deploy]
+  strategy = "canary"
+
 [[vm]]
   memory = '1gb'
   cpu_kind = 'shared'