This page shows you how to deploy a new version of your application and migrate traffic over from an old to a new version.
Push the initial App
Use the Kf CLI to push the initial version of your App with any routes:
$
kf
push
app-v1
--route
my-app.my-space.example.com
Push the updated App
Use the Kf CLI to push a new version of your App without any routes:
$
kf
push
app-v2
--no-route
Add routes to the updated App
Use the Kf CLI to bind all existing routes to the updated App with a weight of 0 to ensure that they don't get any requests:
$
kf
map-route
app-v2
my-space.example.com
--hostname
my-app
--weight
0
Shift traffic
Start shifting traffic from the old App to the updated App by updating the weights on the routes:
$
kf
map-route
app-v1
my-space.example.com
--hostname
my-app
--weight
80
$
kf
map-route
app-v2
my-space.example.com
--hostname
my-app
--weight
20
If the deployment is going well, you can shift more traffic by updating the weights again:
$
kf
map-route
app-v1
my-space.example.com
--hostname
my-app
--weight
50
$
kf
map-route
app-v2
my-space.example.com
--hostname
my-app
--weight
50
Complete traffic shifting
After you're satisfied that the new service hasn't introduced regressions, complete the rollout by shifting all traffic to the new instance:
$
kf
map-route
app-v1
my-space.example.com
--hostname
my-app
--weight
0
$
kf
map-route
app-v2
my-space.example.com
--hostname
my-app
--weight
100
Turn down the original App
After you're satisfied that quick rollbacks aren't needed, remove the original route and stop the App:
$
kf
unmap-route
app-v1
myspace.example.com
--hostname
my-app
$
kf
stop
app-v1
Or delete the App and all associated route mappings:
$
kf
delete
app-v1
