Assign Hetzner Cloud floating IP to a server

assign-hcloud-floating-ip.sh

#!/bin/bash
# Let you assign a floating IP to this server.
# Useful for Keepalived
#
# Require curl & jq

API_TOKEN=""
FLOATING_IP_ID=""
SERVER_ID=""

if [ "${SERVER_ID}" == "" ]
then
  SERVER_ID="$(curl --silent -H \"Authorization: Bearer ${API_TOKEN}\" \"https://api.hetzner.cloud/v1/servers?name=$HOSTNAME\"|jq '.servers[0].id')"
fi

curl \
  --silent \
  -X POST \
  -H "Authorization: Bearer ${API_TOKEN}" \
  -H 'Content-Type: application/json' \
  -d "{\"server\": ${SERVER_ID}}" \
  "https://api.hetzner.cloud/v1/floating_ips/${FLOATING_IP_ID}/actions/assign"