consul-bootstrap.sh

#!/usr/bin/env bash
set -e

if [[ -e /home/core/volumes/consul/raft/peers.json ]] && [[ $(cat /home/core/volumes/consul/raft/peers.json | jq '. | length') -ge 3 ]]; then
    echo "CONSUL_BOOTSTRAP=\"\"" > /tmp/consul-env
    exit
fi

if [[ MACHINES=$(etcdctl ls /consul.io/machines | grep -v ${HOSTNAME}) ]] && [[ ${#MACHINES[@]} -ge 1 ]]; then
    for MACHINE in "$MACHINES"; do
        IP=$(etcdctl get /consul.io/machines/${MACHINE})
        echo "CONSUL_BOOTSTRAP=\"-join ${IP}\"" > /tmp/consul-env
        exit
    done
fi

echo "CONSUL_BOOTSTRAP=\"-bootstrap\"" > /tmp/consul-env