Start multiple Consul sidecars

start-consul-sidecars.sh

#!/bin/bash
set -eu

readonly ADMIN_PORT_START=19000

# Start sidecars
function start_consul_envoy_sidecar {
  local -r sidecar_for="$1"
  local -r admin_bind_port="$2"

  echo "Start consul sidecar for $sidecar_for"
  /usr/local/bin/consul connect envoy \
    -sidecar-for ${sidecar_for} \
    -admin-bind=127.0.0.1:${admin_bind_port} \
    -- -l info
  
  pids[${i}]=$!
}


ADMIN_PORT=$ADMIN_PORT_START
# Get list of sidecars
for SVC in $(consul catalog services -node=$HOSTNAME | grep sidecar-proxy)
do
  echo $SVC
  ADMIN_PORT=$[$ADMIN_PORT +1]

  svcname="${SVC/-sidecar-proxy/}"

  start_consul_envoy_sidecar "$svcname" "$ADMIN_PORT" &
done


# Wait for subprocesses
for job in `jobs -p`
do
echo $job
    wait $job
done