Lajos Papp lalyos

bla bla

kubectl apply ...

Docker just opensourced compose-on-kubernetes (COK for short), and I wanted to run on GKE. This is the jurney:

Architecture

You will be able to use plain-old-compose files against k8s. Actually the docker-compose.yml have to be transformed to a Stack CustomResourceDefinition, and than a controller will take care of creating the all the necesseary k8s resources (deployments, services)

You can create those CRDs in 2 ways:

questions:

rancher: rio?

monday

labs:

minikube is an easy way to work with local kubernetes on osx. By default its uses VirtulBox to create a VM which hosts docker/kubernetes. But you can use different vm drivers to manage the VM. Hyperkit seems to be a more reliable hypervisor.

The rest of this document explains how to use minikube with the hyperkit driver

install minikube

You can check if you have minikube installed:

$ minikube version

You can demostrate how kubernetes stores everything in etcd (v3):

One-liner

You can exec etcdctl rigth in the etc pod:

kubectl exec -it \
  -n kube-system etcd-minikube \
  -- sh -c 'ETCDCTL_CACERT=/var/lib/localkube/certs/etcd/ca.crt \
 ETCDCTL_CERT=/var/lib/localkube/certs/etcd/peer.crt \

use openresty/openresty:alpine as a base image it has an /etc/nginx/conf.d/ dir

    location /lua {                                                                                    
      content_by_lua '                                                                                 
        ngx.say("hello from lua")                                                                      
        ngx.say("host: ", os.getenv("HOSTNAME"))                                                       
      ';                                                                                               
    }

Install

apt-get -qq update
apt-get install -y curl unzip # jq neovim procps dnsutils
curl -LO https://github.com/joewalnes/websocketd/releases/download/v0.3.0/websocketd-0.3.0-linux_amd64.zip
cp ./websocketd /usr/local/bin/
unzip websocketd-0.3.0-linux_amd64.zip

	## compile kubectl

	./hack/build-go.sh
	./hack/build-go.sh cmd/kubectl
	KUBE_VERBOSE=9 V=9 make --no-print-directory -C ./hack/.. all WHAT=cmd/kubectl
	./hack/make-rules/build.sh cmd/kubectl

	## usage: . <(curl -sL bit.ly/kubectl-fix)
	if ! [[ "$KUBECTL_AUTOCOMP_FIXED" ]]; then
	__kubectl_get_resource () { if [[ ${#nouns[@]} -eq 0 ]]; then local kubectl_out; if kubectl_out=$(kubectl api-resources $(__kubectl_override_flags) -o name --cached --verbs=get 2>/dev/null); then COMPREPLY=($( compgen -W "${kubectl_out[*]}" -- "$cur" )); return 0; fi; return 1; fi; __kubectl_parse_get "${nouns[${#nouns[@]} -1]}"; }
	KUBECTL_AUTOCOMP_FIXED=1
	fi

	apiVersion: v1
	data:
	index.html: hello from config
	kind: ConfigMap
	metadata:
	name: webconfig
	---
	apiVersion: extensions/v1beta1
	kind: Deployment
	metadata: