chart-dropoff

Dropping off files, binaries to host for kubernetes cluster using Helm chart.

This chart will create DaemonSet that will facilitate dropping off any files to the host.

To use the chart you will need to create a docker image that runs a script that will copy your file to the host mounted path.

Docker Image Build

You will build your image to your own specification. Then add a bash script to the ENTRYPOINT. For example to drop a binary:

installer.sh

#!/bin/sh

set -o errexit
set -o pipefail

PKG=your-binary

cp "/${PKG}" "/docker-mnt/.${PKG}"
mv -f "/docker-mnt/.${PKG}" "/docker-mnt/${PKG}"
chmod +x "/docker-mmnt/${PKG}"

while : ; do
  sleep 30
done

Dockerfile

FROM busybox

ADD your-binary /
ADD installer.sh /
RUN mkdir /docker-mmnt
VOLUME /docker-mmnt

ENTRYPOINT ["sh", "/installer.sh"]

Values

Name	Requirement	Default	Description
pathInImage	mandatory		The path in the pod that will mount to host path, for example the `VOLUME` in your Dockerfile
hostPath	mandatory		The destination of the drop on host. For example the path your binary will be dropped into
repository	mandatory		Docker image reposository
tag	optional	latest	Image tag
pullSecret	optional		Image pull secrect if using private repo
pullPolicy	optional	Always	Image pull policy
component	optional		DaemonSet label. Useful when using this chart for dropping different files

Installation

$ helm install --namespace <your-namespace> . --set <name>=<value>,<parent.children>=<value>

Upgrade

$ helm upgrade <release-name>

Delete