show green and failed indices in status, rename red to failed in index ls

pkg/es/cluster.go

@@ -174,11 +174,16 @@ func ClusterStatus(conf *cfg.Config) error {
 	}
 
 	// look for red indices, if any
-	redindices := 0
+	failedIndices := 0
+	greenIndices := 0
 
 	for _, index := range *res.indices {
-		if *index.Health == "red" {
-			redindices++
+		switch {
+		case *index.Health != "green":
+			failedIndices++
+		case !strings.HasPrefix(*index.Index, "."):
+			// don't count internal indices
+			greenIndices++
 		}
 	}
 
@@ -205,7 +210,8 @@ func ClusterStatus(conf *cfg.Config) error {
 		{"Unassigned Primary Shards", res.health.UnassignedPrimaryShards},
 		{"Pending Tasks", res.health.NumberOfPendingTasks},
 		{"Nodes", res.health.NumberOfNodes},
-		{"Red Indices", redindices},
+		{"Green Indices", greenIndices},
+		{"Failed Indices", failedIndices},
 		{"Long Running Tasks", longtasks},
 	}