How to define options for docker run inside a k8s yaml specification

[shashank....@gmail.com]

Hi,

I have a docker container that I run with following options:
docker run -d --net=host --add-host=moby:127.0.0.1 --shm-size=1G \
-v /Users/spedamallu/Files/Learning/alluxio/alluxio-1.5.0-hadoop-2.8/integration/docker/underStorage:/underStorage \
-e ALLUXIO_MASTER_HOSTNAME=127.0.0.1 \
-e ALLUXIO_WORKER_MEMORY_SIZE=1GB \
-e ALLUXIO_UNDERFS_ADDRESS=/underStorage \
symphony-docker-local.jfrog.io/logsaas/alluxio-local worker

I'm trying to deploy this image via a k8s pod. I know I can set environment variables and resource limits from the specification, but how do I set / give options for container run command? I'm specifically looking on how to set "--net=host --add-host=moby:127.0.0.1" parameters. Here's how I have the configuration for this container in k8s yaml I have so far:

- name: alluxio-worker
image: symphony-docker-local.jfrog.io/logsaas/alluxio-worker:latest
command: ["--net", "host", "--add-host", "moby:127.0.0.1"]
imagePullPolicy: IfNotPresent
ports:
env:
- name: ALLUXIO_MASTER_HOSTNAME
value: "127.0.0.1"
- name: ALLUXIO_WORKER_MEMORY_SIZE
value: "3GB"
- name: ALLUXIO_UNDERFS_ADDRESS
value: "/"
resources:
limits:
cpu: "100m"
memory: "3Gi"
volumeMounts:

Any help is much appreciated!

Thanks in advance,
Shashank

[Tim Hockin]

Please look at the API docs for host network.  We don't really have an analog of add-host yet.

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[shashank....@gmail.com]

Could you please elaborate. Do not understand what you mean by "look at api docs for host network." According to docker documentation --add-host option is adding a custom host-to-ip mapping. How can I achieve the same using host network api. And I'm running this on Amazon EC2.

Thanks,
Shashank

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[Tim Hockin]

You have to look at the kubernetes docs for the kubernetes API.
Kubernetes is not docker.

https://kubernetes.io/docs/api-reference/v1.7/#pod-v1-core

Search for `hostNetwork`.

Tim