DEFAULT_PILOT_ADDRESS="istiod.${ISTIO_SYSTEM_NAMESPACE}.svc:15012"
CUSTOM_PILOT_ADDRESS="${PILOT_ADDRESS:-}"
if [ -z "${CUSTOM_PILOT_ADDRESS}" ] && [ -n "${ISTIO_PILOT_PORT:-}" ]; then
  CUSTOM_PILOT_ADDRESS=istiod.${ISTIO_SYSTEM_NAMESPACE}.svc:${ISTIO_PILOT_PORT}
fi

# CA_ADDR > PILOT_ADDRESS > ISTIO_PILOT_PORT
CA_ADDR=${CA_ADDR:-${CUSTOM_PILOT_ADDRESS:-${DEFAULT_PILOT_ADDRESS}}}
PROV_CERT=${PROV_CERT-./etc/certs}