diff --git a/DistTestCore/CodexStarter.cs b/DistTestCore/CodexStarter.cs
index 23b60b1..4c40a06 100644
--- a/DistTestCore/CodexStarter.cs
+++ b/DistTestCore/CodexStarter.cs
@@ -93,10 +93,26 @@ namespace DistTestCore
         {
             var group = new CodexNodeGroup(lifecycle, codexSetup, runningContainers, codexNodeFactory);
             RunningGroups.Add(group);
-            Stopwatch.Measure(lifecycle.Log, "EnsureOnline", group.EnsureOnline, debug: true);
+
+            try
+            {
+                Stopwatch.Measure(lifecycle.Log, "EnsureOnline", group.EnsureOnline, debug: true);
+            }
+            catch
+            {
+                CodexNodesNotOnline(runningContainers);
+                throw;
+            }
+
             return group;
         }
 
+        private void CodexNodesNotOnline(RunningContainers runningContainers)
+        {
+            Log("Codex nodes failed to start");
+            foreach (var container in runningContainers.Containers) lifecycle.DownloadLog(container);
+        }
+
         private StartupWorkflow CreateWorkflow()
         {
             return workflowCreator.CreateWorkflow();