e class="language-conf">otoroshi {
  ...
  cluster {
    mode = &quot;leader&quot; # or &quot;worker&quot; dependending on the instance kind
    ...
    relay {
      enabled = true # enable relay routing
      leaderOnly = true # use leaders as the only kind of relay node
      location { # you can use all those parameters at the same time. There is no actual network concepts bound here, just some kind of tagging system, so you can use it as you wish
        provider = ${?OTOROSHI_CLUSTER_RELAY_LOCATION_PR