Scale up/down your docker replica’s

I had my Caprover go crazy the other day. It started 5 replica’s of my service while only 1 is needed.

To fix this, I had to scale the service down to 0 and then back to 1

$ docker service scale my-app=0
my-app scaled to 0
overall progress: 0 out of 0 tasks
verify: Service converged

And then back up

$ docker service scale my-app=1
my-app scaled to 1
overall progress: 1 out of 1 tasks
1/1: running   [==================================================>]
verify: Service converged