diff -r 2395bdfac387 -r 442d23455ae4 bmsd/nodes.c
--- a/bmsd/nodes.c	Thu May 30 21:19:43 2019 +0200
+++ b/bmsd/nodes.c	Thu May 30 23:00:20 2019 +0200
@@ -29,10 +29,10 @@
 #include "mysql.h"
 
 
-sys_node_list		*nodes = NULL;
+sys_node_list			*nodes = NULL;
 
-extern int		debug;
-
+extern int			debug;
+extern sys_fermenter_list	*fermenters;
 
 
 void node_birth_data(char *topic, char *payload)
@@ -239,3 +239,30 @@
 }
 
 
+
+void nodes_check_online()
+{
+    sys_node_list	*tmpn;
+    sys_fermenter_list  *tmpf;
+    time_t		now = time(NULL);
+
+    for (tmpn = nodes; tmpn; tmpn = tmpn->next) {
+	if (tmpn->online && ((now - tmpn->lastseen) > 600)) {
+	    syslog(LOG_NOTICE, "Timeout node `%s/%s'", tmpn->group_id, tmpn->node);
+	    tmpn->online = false;
+	    node_mysql_death(tmpn->node);
+
+	    for (tmpf = fermenters; tmpf; tmpf = tmpf->next) {
+            	if (strcmp(tmpf->node, tmpn->node) == 0) {
+                    if (tmpf->online) {
+                    	syslog(LOG_NOTICE, "Timeout fermenter %s/%s", tmpf->node, tmpf->alias);
+                	tmpf->online = false;
+			fermenter_mysql_death(tmpf->node, tmpf->alias);
+		    }
+            	}
+            }
+	}
+    }
+}
+
+