Helper scripts to open a tunnel to a service in kubernetes and launch the browser to the given service.

open-tunnel-and-browser.sh

#!/usr/bin/env bash

ENVIRONMENT=$1
NAMESPACE=$2
SERVICE_NAME=$3

DEFAULT_LOCAL_PORT=4000
DEFAULT_TARGET_PORT=80

case $ENVIRONMENT in
  prod* )
    DEFAULT_LOCAL_PORT=4400
    ;;
  stag* )
    DEFAULT_LOCAL_PORT=4450
    ;;
esac

case $NAMESPACE in
  dashboard )
    SERVICE_NAME=kubernetes-dashboard
    NAMESPACE=kube-system
    ;;
  grafana )
    SERVICE_NAME=monitoring-grafana
    NAMESPACE=kube-system
    ;;
  prometheus )
    if [ "$SERVICE_NAME" = "" ] ; then
      SERVICE_NAME=prometheus
    fi
    ;;
  alertmanager )
    NAMESPACE=prometheus
    SERVICE_NAME=alertmanager
    ;;
  kibana )
    SERVICE_NAME=kibana
    NAMESPACE=elasticsearch
    ;;
esac

case $SERVICE_NAME in
  kubernetes-dashboard|dashboard )
    (( DEFAULT_LOCAL_PORT=DEFAULT_LOCAL_PORT+1))
    ;;

  grafana|monitoring-grafana )
    SERVICE_NAME=monitoring-grafana
    (( DEFAULT_LOCAL_PORT=DEFAULT_LOCAL_PORT+2 ))
    ;;

  prometheus )
    SERVICE_NAME=prometheus
    DEFAULT_TARGET_PORT=9090
    (( DEFAULT_LOCAL_PORT=DEFAULT_LOCAL_PORT+3 ))
    ;;

  alertmanager|alertmanager-main )
    SERVICE_NAME=alertmanager-main
    DEFAULT_TARGET_PORT=9093
    (( DEFAULT_LOCAL_PORT=DEFAULT_LOCAL_PORT+6 ))
    ;;

  kibana )
    (( DEFAULT_LOCAL_PORT=DEFAULT_LOCAL_PORT+5 ))
    ;;
esac

LOCAL_PORT=${4:-$DEFAULT_LOCAL_PORT}
TARGET_PORT=${5:-$DEFAULT_TARGET_PORT}


DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

k() { kubectl --context ${ENVIRONMENT} "$@" -n $NAMESPACE ; }

(yarn -s wait-on http-get://localhost:$LOCAL_PORT && $DIR/open.sh http://localhost:$LOCAL_PORT/) &
k port-forward svc/$SERVICE_NAME $LOCAL_PORT:$TARGET_PORT

open.sh

#!/usr/bin/env bash
# Cross-platform script for opening a browser to the given URL
for CMD in xdg-open open cygstart start ; do
  if [ -x "$(command -v $CMD)" ] ; then
    $CMD "$@"
    break
  fi
done