Bug#23546, Cluster configured without any arbitration

storage/ndb/src/mgmsrv/ConfigInfo.cpp

@@ -3604,6 +3604,7 @@ check_node_vs_replicas(Vector<ConfigInfo::ConfigRuleSection>&sections,
   Uint32 db_nodes= 0;
   Uint32 replicas= 0;
   Uint32 db_host_count= 0;
+  bool  with_arbitration_rank= false;
   ctx.m_userProperties.get(DB_TOKEN, &db_nodes);
   ctx.m_userProperties.get("NoOfReplicas", &replicas);
   if((db_nodes % replicas) != 0){
@@ -3670,7 +3671,6 @@ check_node_vs_replicas(Vector<ConfigInfo::ConfigRuleSection>&sections,
                 node_group_warning.appfmt("  Node group %d", group); 
               c|= 1 << j; 
               p_db_hosts.put(str.c_str(),c); 
-
               node_group_warning.appfmt(",\n    db node with id %d and id %d " 
               "on same host %s", other_i, i, host); 
             } 
@@ -3698,6 +3698,7 @@ check_node_vs_replicas(Vector<ConfigInfo::ConfigRuleSection>&sections,
         Uint32 rank; 
         if(tmp->get("ArbitrationRank", &rank) && rank > 0) 
         { 
+          with_arbitration_rank = true;  //check whether MGM or API node configured with rank >0 
           if(host && host[0] != 0) 
           { 
             Uint32 ii; 
@@ -3716,6 +3717,13 @@ check_node_vs_replicas(Vector<ConfigInfo::ConfigRuleSection>&sections,
     }
     if (db_host_count > 1 && node_group_warning.length() > 0)
       ndbout_c("Cluster configuration warning:\n%s",node_group_warning.c_str());
+    if (!with_arbitration_rank) 
+    {
+      ndbout_c("Cluster configuration warning:" 
+         "\n  Neither %s nor %s nodes are configured with arbitrator,"
+         "\n  may cause complete cluster shutdown in case of host failure.", 
+         MGM_TOKEN, API_TOKEN);
+    }
     if (db_host_count > 1 && arbitration_warning.length() > 0)
       ndbout_c("Cluster configuration warning:%s%s",arbitration_warning.c_str(),
 	       "\n  Running arbitrator on the same host as a database node may"