186-tanka.sh

# Source: https://gist.github.com/c09d2657583afd75e38522b66776f785

###################################
# Helm And Kustomize Replacement? #
# Jsonnet With Grafana Tanka      #
# https://youtu.be/-qpcsUXElYc    #
###################################

# Additional Info:
# - Jsonnet: https://jsonnet.org
# - Grafana Tanka: https://grafana.com/oss/tanka

#########
# Setup #
#########

# Create a Kubernetes cluster (any should do)

# Install `tk` and `jb` CLIs from https://tanka.dev/install

git clone https://github.com/vfarcic/tanka-demo

cd tanka-demo

export CURRENT_CONTEXT=$(kubectl \
    config current-context)

export API_SERVER=$(kubectl config view \
    --raw --minify --flatten \
    --output jsonpath="{.clusters[?(@.name == \"$CURRENT_CONTEXT\")].cluster.server}")

# Install `jq` CLI from https://stedolan.github.io/jq/download/

cat environments/production/spec.json \
    | jq ".spec.apiServer = \"$API_SERVER\"" \
    | tee environments/production/spec.json

cat environments/libs/spec.json \
    | jq ".spec.apiServer = \"$API_SERVER\"" \
    | tee environments/libs/spec.json

###################################
# Jsonnet With Grafana Tanka Demo #
###################################

ls -1

# `tk init` creates the initial folder structure and files

tk eval environments/production

tk show environments/production

tk apply environments/production

kubectl --namespace production get all,ingresses

cat environments/production/kubernetes.libsonnet

cat environments/production/silly-demo.Jsonnet

cat environments/production/devops-toolkit.Jsonnet

cat environments/production/main.Jsonnet

cat environments/production/spec.json

cat environments/production/kubernetes.libsonnet

cat environments/libs/main.Jsonnet

tk show environments/libs

###########
# Destroy #
###########

tk delete environments/production

# Destroy or reset the cluster