Kind

Kind is a tool for running local Kubernetes clusters using Docker container “nodes”. kind is primarily designed for testing Kubernetes 1.11+, initially targeting the conformance tests.

  1. Download kind & install executable:

    sudo wget -q -L -O /usr/local/bin/kind  https://github.com/kubernetes-sigs/kind/releases/download/v0.8.1/kind-$(uname)-amd64
sudo chmod a+x /usr/local/bin/kind

  2. Create a kind cluster

    For newcomers and testing purposes, we recommend to use the latest version available in the 1.17 tag.

    kind create cluster --image kindest/node:v1.17.11

    For checking the latest available version for the kindest/node, you can do so as follows:

    curl https://registry.hub.docker.com/v2/repositories/kindest/node/tags/ \
    | jq '.results[] | select(.name|test("1.17")) | .name'

    Keep in mind that there is no guarantee that at some point, after some kind release, that image will not be overwritten with a new one that is not compatible with previous version. This means that to use a specific version of Kubernetes we have to include the SHA256 of the image in the name. ie, the lowest supported kindest version for StackGres is the 1.16.x family, with the following tag:

    kind create cluster --image kindest/node:v1.16.9@sha256:7175872357bc85847ec4b1aba46ed1d12fa054c83ac7a8a11f5c268957fd5765

  3. Install NFS utility for backups:

    This is required in order to store PostgreSQL backups in a shared NFS disk.

    docker exec -ti kind-control-plane sh -c 'DEBIAN_FRONTEND=noninteractive apt-get update -y -qq < /dev/null > /dev/null'
docker exec -ti kind-control-plane sh -c 'DEBIAN_FRONTEND=noninteractive apt-get install -y -qq nfs-common < /dev/null > /dev/null'