identifiable replicas in docker compose

d-led · Jun 16, 2024 · 42fe294 · 42fe294
1 parent fbf9bef
commit 42fe294
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/docker-compose.yml b/docker-compose.yml
@@ -21,6 +21,8 @@ services:
       context: .
     environment:
       - COUNTER_FILENAME=/appdata/my.gcounter
+    deploy:
+      replicas: 3
     labels:
       - "traefik.http.routers.inventory-api-service.rule=PathPrefix(`/`)"
       - "traefik.http.services.mermaidlive.loadbalancer.server.port=8080"
diff --git a/fly_environment.go b/fly_environment.go
@@ -32,13 +32,17 @@ func getCounterFilename() string {
 
 func GetReplicasEvent(count int) Event {
 	return NewEventWithParam("ReplicasActive",
-		fmt.Sprintf("%d (you are on '%s')", count, getFlyPublicReplicaId()))
+		fmt.Sprintf("%d (you are on '%s')", count, getPublicReplicaId()))
 }
 
-func getFlyPublicReplicaId() string {
+func getPublicReplicaId() string {
 	if id, ok := os.LookupEnv("FLY_MACHINE_ID"); ok && len(id) > 5 {
 		// do not show the full machine ID
 		return id[len(id)-5:]
 	}
+	hostname, err := os.Hostname()
+	if err == nil {
+		return hostname
+	}
 	return "local"
 }