Watch files and rsync to k8s pods automatically

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Full Tutorial

https://www.izumanetworks.com/blog/use-rsync-with-k8s/

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watch-krsync.sh

This script will allow you to watch a local file system on your development machine, with it automatically syncing to a pod.

Generally, the form is:

watch-krsync.sh PODNAME /local/path:/remote/path [/another/local:/another/remove]..

for instance:

% kubectl get pods
NAME                                 READY   STATUS      RESTARTS   AGE
debug-pod                            1/1     Running     0          18d
...
website-77ddc857cd-f2t99             1/1     Running     0          10h

%  ./watch-krsync.sh website-77ddc857cd-f2t99 ~/work/website/public:/www/public

Would watch ~/work/website/public and sync it to /www/public in the website-77ddc857cd-f2t99 pod. Run the command in a separate terminal during active development. Multiple directories can be watched, just by adding pairs of LOCAL:REMOTE arguments at the end.

Prerequisites

Pod:

• Must have rsync installed

Dev machine:

• Must have rsync installed
• Must have working kubectl connectivity to the cluster
• Must have fswatch installed: https://github.com/emcrisostomo/fswatch/blob/master/INSTALL