I'm running a cluster with docker for mac (docker-for-desktop) and need to set the streaming-connection-idle-timeout flag (according to this post)

How can I config the kubelet on the fly (and also before launching the cluster)?

here's the node detail if needed:

NAME                 STATUS   ROLES    AGE    VERSION    EXTERNAL-IP   OS-IMAGE         KERNEL-VERSION     CONTAINER-RUNTIME
docker-for-desktop   Ready    master   132d   v1.10.11   <none>        Docker for Mac   4.9.125-linuxkit   docker://18.9.2