gistfile1.txt

#!/usr/bin/env bash

# https://grafana.com/docs/grafana/latest/http_api/auth/#create-api-token
GRAFANA_TOKEN=""

if [ "$1" = "" ]; then
  echo "url to prometheus.tar required"
  exit 1
fi

LINK=$1
SUB_DIR=$2

if [ "$2" = "" ]; then
	SUB_DIR=sbatsche-$(date '+%Y-%m-%d-%s')
fi
INSTALL_DIR="${HOME}/prometheus/$SUB_DIR"


IP=$((1 + RANDOM % 253))

init () {
  mkdir -p $INSTALL_DIR
  cd $INSTALL_DIR
  mkdir prometheus
  curl $LINK > prometheus.tar
  tar -xzf "$INSTALL_DIR/prometheus.tar" -C "$INSTALL_DIR/prometheus"
  BASE_LINK=$(echo $LINK | grep -oP '(.+?(?=artifacts))')
  echo "BASE ${BASE_LINK}finished.json"
  curl -s ${BASE_LINK}finished.json > ./finished.json
  sudo chmod -R 777 prometheus
}

gen_config() {
  cat > $INSTALL_DIR/docker-compose.yml << EOF
version: '2' 
services:

    prom1:
        image: prom/prometheus:v2.14.0 
        restart: always
        ports:
            - 9090
        volumes:
          - ./prometheus/:/prometheus/
        networks:
          prom_net:
            ipv4_address: 172.24.${IP}.10
networks:
  prom_net:
    driver: bridge
    driver_opts:
      com.docker.network.enable_ipv6: "false"
    ipam:
      driver: default
      config:
      - subnet: 172.24.${IP}.0/24
        gateway: 172.24.${IP}.1
EOF
}

start() {
  echo "Installing to $INSTALL_DIR"

  cd $INSTALL_DIR; docker-compose up -d

  END_TIME="$(jq -r '.timestamp' "./finished.json")"
  END_TIME_PARSED=$(date --date @${END_TIME} +"%Y-%m-%d %H:%M")
  START_TIME="$((END_TIME + 4600*3))"
  START_TIME_PARSED=$(date --date @${START_TIME} +"%Y-%m-%d %H:%M")

  echo "Now available via http://172.24.${IP}.10:9090/graph?g0.range_input=15m&g0.end_input=${START_TIME_PARSED}&g0.expr=etcd_debugging_mvcc_db_total_size_in_bytes&g0.tab=0"
  
  if [ "$GRAFANA_TOKEN" != "" ]; then
  BASE_LINK=$(echo $LINK | grep -oP '(.+?(?=artifacts))')

  echo "creating new grafana datasource $BASE_LINK "
	curl -X POST http://localhost:3000/api/datasources  \
	  -H "Authorization: Bearer $GRAFANA_TOKEN" \
	  -H "content-type: application/json" \
          --data @<(cat <<EOF
{
  "name": "$BASE_LINK",
  "type": "prometheus",
  "url": "http://172.24.${IP}.10:9090",
  "access": "browser",
  "basicAuth": false
  }
EOF
)
  fi
}


init
gen_config
start