setup.sh

#!/bin/bash

# strict mode - based on http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -euo pipefail
IFS=$'\n\t'

CONFIGS_PATH="./configs"

#region SETUP ENV

setup() {
    PORTAINER_BASE=$1
    for f in $(find  -name kind.yaml.template); do
        sed "s#_PORTAINER_PATH_#$PORTAINER_BASE#g" $f > "$(dirname $f)"/kind.yaml;
    done
}

#endregion


#region CLUSTER MANAGEMENT
create() {
    CONTEXT=$1
    kind create cluster --config=$CONFIGS_PATH/$1/kind.yaml --name $CONTEXT
    kubectl --context kind-$CONTEXT apply -f $CONFIGS_PATH/common/portainer-ns.yaml
    kubectl --context kind-$CONTEXT apply -f $CONFIGS_PATH/common/cluster-admin.yaml
}

portainer() {
    kubectl --context kind-$1 replace --force -f $CONFIGS_PATH/$1/portainer.yaml
}

delete() {
    kind delete clusters $1
}

recreate() {
    delete $1
    create $1
}
#endregion

#region APP MANAGEMENT
deploy() {
    kubectl --context kind-$1 apply -f $2
}

redeploy() {
    kubectl --context kind-$1 replace --force -f $2
}

remove() {
    kubectl --context kind-$1 delete --force -f $2
}
#endregion

usage() {
    echo """
Usage: ./setup.sh ACTION CONTEXT [CONFIG_FILE]

with: - ACTION one of
          setup
          create | delete | recreate | portainer
          deploy | redeploy | remove
          help | usage | *
      - CONTEXT the name of a folder in ./configs/
      - CONFIG_FILE any .yaml config to deploy

ACTIONS:
  - ./setup.sh setup PORTAINER_BASE
    * will create kind files where the base path is set to PORTAINER_BASE

  - ./setup.sh [ create | delete | recreate | portainer ] CONTEXT
    * create: create a new cluster defined by configs/CONTEXT/kind.yaml
    * delete: delete cluster defined by configs/CONTEXT/kind.yaml
    * recreate: alias for delete + create
    * portainer: redeploy portainer inside CONTEXT cluster using configs/CONTEXT/portainer.yaml (kubectl replace --force)

  - ./setup.sh [ deploy | redeploy | remove ] CONTEXT CONFIG_FILE
    * deploy: deploy the items defined by CONFIG_FILE inside CONTEXT cluster (kubectl apply)
    * redeploy: redeploy the items defined by CONFIG_FILE inside CONTEXT cluster (kubectl replace --force)
    * delete: delete the items defined by CONFIG_FILE inside CONTEXT cluster (kubectl delete --force)

  - ./setup.sh [ usage | help | * ]
    show this usage
    """
}

command=${1:-}
case $command in
    create | recreate | portainer | delete | setup)
        if [[ $# == 2 ]]; then
            $1 $2
        else
            usage
        fi
    ;;
    deploy | redeploy | remove)
        if [[ $# == 3 ]]; then
            $1 $2 $3
        else
            usage
        fi
    ;;
    help | usage | *)
        usage
    ;;
esac