Use keepalived to set up a virtual IP for traefik.

services/traefik.hcl

@@ -116,5 +116,21 @@ EOH
         memory = 512
       }
     }
+    task "keepalived" {
+      driver = "docker"
+      env {
+        KEEPALIVED_INTERFACE = "eno1"
+        KEEPALIVED_VIRTUAL_IPS = "192.168.1.100/24"
+        KEEPALIVED_UNICAST_PEERS = ""
+        KEEPALIVED_STATE       = "MASTER"
+        KEEPALIVED_VIRTUAL_ROUTES = ""
+      }
+      config {
+        image        = "visibilityspots/keepalived"
+        network_mode = "host"
+        privileged   = true
+        cap_add      = ["NET_ADMIN", "NET_BROADCAST", "NET_RAW"]
+      }
+    }
   }
 }