Add pre-start hook for checking node not running at start

Author: Thomas Arts

rebar.config

@@ -86,7 +86,9 @@
          {template, "rel/files/riak-repl",         "bin/riak-repl"},
          {template, "rel/files/check_riak_config", "bin/check_riak_config"},
 
-         {copy, "rel/files/check_ulimit", "bin/hooks/prestart/check_ulimit"}
+         {copy, "rel/files/check_ulimit", "bin/hooks/check_ulimit"},
+         {copy, "rel/files/riak_not_running", "bin/hooks/riak_not_running"}
+
     ]},
 
     {generate_start_script, true},
@@ -98,14 +100,15 @@
         {chkconfig, "riak-chkconfig"}
     ]},
 
-    {extended_start_script_hooks, [
-        {pre_start, [
-            {custom, "hooks/prestart/check_ulimit"}
-        ]},
-        {post_start, [
-            {wait_for_process, riak_core_node_watcher}
-        ]}
-    ]}
+
+    {extended_start_script_hooks,
+     [ {pre_start,
+        [{custom, "hooks/riak_not_running"},
+         {custom, "hooks/check_ulimit"}]},
+      {post_start,
+       [{wait_for_process, riak_core_node_watcher}
+       ]}
+     ]}
 ]}.
 
 {profiles, [

rel/files/riak_not_running

@@ -0,0 +1,8 @@
+#!/bin/sh
+# -*- tab-width:4;indent-tabs-mode:nil -*-
+# ex: ts=4 sw=4 et
+
+if relx_nodetool "ping" > /dev/null; then
+    echo "Node is already running!"
+    exit 1
+fi