| #!/bin/bash | |
| parent_short_id=$1 | |
| parent_id=`docker inspect --format '{{.Id}}' $1` | |
| get_kids() { | |
| local parent_id=$1 | |
| docker inspect --format='ID {{.Id}} PAR {{.Parent}}' $(docker images -a -q) | grep "PAR ${parent_id}" | sed -E "s/ID ([^ ]*) PAR ([^ ]*)/\1/g" | |
| } | |
| print_kids() { |
| #!/usr/bin/python3 | |
| # | |
| # usage: python3 docker_descendants.py <image_id> ... | |
| import sys | |
| from subprocess import check_output | |
| def main(images): | |
| image_ids = set(images) |
| ###################### | |
| # Create The Cluster # | |
| ###################### | |
| # Open Docker Preferences, select the Kubernetes tab, and select the "Enable Kubernetes" checkbox | |
| # Open Docker Preferences, select the Advanced tab, set CPUs to 2, and Memory to 2.0 | |
| # Make sure that your current kubectl context is pointing to your Docker for Mac/Windows cluster |
| ###################### | |
| # Create The Cluster # | |
| ###################### | |
| # Make sure that your minikube version is v0.26 or higher | |
| minikube start \ | |
| --vm-driver virtualbox \ | |
| --cpus 2 \ | |
| --memory 2048 |
| ###################### | |
| # Create The Cluster # | |
| ###################### | |
| # Make sure that your kops version is v1.9 or higher. | |
| # Make sure that all the prerequisites described in the "Appendix A" are met. | |
| # Do not run the commands from below if you are a **Windows** user. You'll have to follow the instructions from the Appendix B instead. |
| ###################### | |
| # Create The Cluster # | |
| ###################### | |
| # Make sure that your minishift version is v1.15 or higher | |
| minishift start \ | |
| --vm-driver virtualbox \ | |
| --cpus 2 \ | |
| --memory 2048 \ |
| ###################### | |
| # Create The Cluster # | |
| ###################### | |
| gcloud auth login | |
| gcloud auth application-default login | |
| ZONE=$(gcloud compute zones list \ | |
| --filter "region:(us-east1)" \ |
| FROM mirror-hub.docker.tech.lastmile.com/alpine:3.5 | |
| RUN apk add --no-cache curl jq | |
| RUN curl -o /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v1.5.3/bin/linux/amd64/kubectl && chmod +x /usr/local/bin/kubectl | |
| COPY rmpeers / | |
| CMD ["/rmpeers"] |
Let's look at an example of how to launch a Kubernetes cluster from scratch on DigitalOcean, including kubeadm, an Nginx Ingress controller, and Letsencrypt certificates.
We'll be creating a four-node cluster (k8s-master, k8s-000...k8s-002), load balancer, and ssl certificates.
