diff --git a/lib/ProxySQL_Admin.cpp b/lib/ProxySQL_Admin.cpp
index 77441ae52..5870fadb7 100644
--- a/lib/ProxySQL_Admin.cpp
+++ b/lib/ProxySQL_Admin.cpp
@@ -4408,50 +4408,81 @@ int ProxySQL_Admin::Read_MySQL_Query_Rules_from_configfile() {
 
 int ProxySQL_Admin::Read_MySQL_Servers_from_configfile() {
 	const Setting& root = GloVars.confFile->cfg->getRoot();
-	if (root.exists("mysql_servers")==false) return 0;
-	const Setting &mysql_servers = root["mysql_servers"];
-	int count = mysql_servers.getLength();
-	//fprintf(stderr, "Found %d servers\n",count);
 	int i;
 	int rows=0;
 	admindb->execute("PRAGMA foreign_keys = OFF");
-	char *q=(char *)"INSERT OR REPLACE INTO mysql_servers (hostname, port, hostgroup_id, compression, weight, status, max_connections, max_replication_lag, use_ssl, max_latency_ms) VALUES (\"%s\", %d, %d, %d, %d, \"%s\", %d, %d, %d, %d)";
-	for (i=0; i< count; i++) {
-		const Setting &server = mysql_servers[i];
-		std::string address;
-		std::string status="ONLINE";
-		int port;
-		int hostgroup;
-		int weight=1;
-		int compression=0;
-		int max_connections=1000; // default
-		int max_replication_lag=0; // default
-		int use_ssl=0;
-		int max_latency_ms=0;
-		if (server.lookupValue("address", address)==false) continue;
-		if (server.lookupValue("port", port)==false) continue;
-		if (server.lookupValue("hostgroup", hostgroup)==false) continue;
-		server.lookupValue("status", status);
-		if (
-			(strcasecmp(status.c_str(),(char *)"ONLINE"))
-			&& (strcasecmp(status.c_str(),(char *)"SHUNNED"))
-			&& (strcasecmp(status.c_str(),(char *)"OFFLINE_SOFT"))
-			&& (strcasecmp(status.c_str(),(char *)"OFFLINE_HARD"))
-		) {
-				status="ONLINE";
-		}
-		server.lookupValue("compression", compression);
-		server.lookupValue("weight", weight);
-		server.lookupValue("max_connections", max_connections);
-		server.lookupValue("max_replication_lag", max_replication_lag);
-		server.lookupValue("use_ssl", use_ssl);
-		server.lookupValue("max_latency_ms", max_latency_ms);
-		char *query=(char *)malloc(strlen(q)+strlen(status.c_str())+strlen(address.c_str())+128);
-		sprintf(query,q, address.c_str(), port, hostgroup, compression, weight, status.c_str(), max_connections, max_replication_lag, use_ssl, max_latency_ms);
-		//fprintf(stderr, "%s\n", query);
-  	admindb->execute(query);
-		free(query);
-		rows++;
+	if (root.exists("mysql_servers")==true) {
+		const Setting &mysql_servers = root["mysql_servers"];
+		int count = mysql_servers.getLength();
+		//fprintf(stderr, "Found %d servers\n",count);
+		char *q=(char *)"INSERT OR REPLACE INTO mysql_servers (hostname, port, hostgroup_id, compression, weight, status, max_connections, max_replication_lag, use_ssl, max_latency_ms, comment) VALUES (\"%s\", %d, %d, %d, %d, \"%s\", %d, %d, %d, %d, '%s')";
+		for (i=0; i< count; i++) {
+			const Setting &server = mysql_servers[i];
+			std::string address;
+			std::string status="ONLINE";
+			int port;
+			int hostgroup;
+			int weight=1;
+			int compression=0;
+			int max_connections=1000; // default
+			int max_replication_lag=0; // default
+			int use_ssl=0;
+			int max_latency_ms=0;
+			std::string comment="";
+			if (server.lookupValue("address", address)==false) continue;
+			if (server.lookupValue("port", port)==false) continue;
+			if (server.lookupValue("hostgroup", hostgroup)==false) continue;
+			server.lookupValue("status", status);
+			if (
+				(strcasecmp(status.c_str(),(char *)"ONLINE"))
+				&& (strcasecmp(status.c_str(),(char *)"SHUNNED"))
+				&& (strcasecmp(status.c_str(),(char *)"OFFLINE_SOFT"))
+				&& (strcasecmp(status.c_str(),(char *)"OFFLINE_HARD"))
+			) {
+					status="ONLINE";
+			}
+			server.lookupValue("compression", compression);
+			server.lookupValue("weight", weight);
+			server.lookupValue("max_connections", max_connections);
+			server.lookupValue("max_replication_lag", max_replication_lag);
+			server.lookupValue("use_ssl", use_ssl);
+			server.lookupValue("max_latency_ms", max_latency_ms);
+			server.lookupValue("comment", comment);
+			char *o1=strdup(comment.c_str());
+			char *o=escape_string_single_quotes(o1, false);
+			char *query=(char *)malloc(strlen(q)+strlen(status.c_str())+strlen(address.c_str())+strlen(o)+128);
+			sprintf(query,q, address.c_str(), port, hostgroup, compression, weight, status.c_str(), max_connections, max_replication_lag, use_ssl, max_latency_ms, o);
+			//fprintf(stderr, "%s\n", query);
+			admindb->execute(query);
+			if (o!=o1) free(o);
+			free(o1);
+			free(query);
+			rows++;
+		}
+	}
+	if (root.exists("mysql_replication_hostgroups")==true) {
+		const Setting &mysql_replication_hostgroups = root["mysql_replication_hostgroups"];
+		int count = mysql_replication_hostgroups.getLength();
+		char *q=(char *)"INSERT OR REPLACE INTO mysql_replication_hostgroups (writer_hostgroup, reader_hostgroup, comment) VALUES (%d, %d, '%s')";
+		for (i=0; i< count; i++) {
+			const Setting &line = mysql_replication_hostgroups[i];
+			int writer_hostgroup;
+			int reader_hostgroup;
+			std::string comment="";
+			if (line.lookupValue("writer_hostgroup", writer_hostgroup)==false) continue;
+			if (line.lookupValue("reader_hostgroup", reader_hostgroup)==false) continue;
+			line.lookupValue("comment", comment);
+			char *o1=strdup(comment.c_str());
+			char *o=escape_string_single_quotes(o1, false);
+			char *query=(char *)malloc(strlen(q)+strlen(o)+32);
+			sprintf(query,q, writer_hostgroup, reader_hostgroup, o);
+			//fprintf(stderr, "%s\n", query);
+			admindb->execute(query);
+			if (o!=o1) free(o);
+			free(o1);
+			free(query);
+			rows++;
+		}
 	}
 	admindb->execute("PRAGMA foreign_keys = ON");
 	return rows;
diff --git a/src/proxysql.cfg b/src/proxysql.cfg
index bc4bb9bd2..6b65d04ca 100644
--- a/src/proxysql.cfg
+++ b/src/proxysql.cfg
@@ -46,9 +46,24 @@ mysql_servers =
 		port=3306
 		hostgroup=0
 		max_connections=200
+		comment="test server"
 	}
 )
 
+mysql_replication_hostgroups=
+(
+        {
+                writer_hostgroup=30
+                reader_hostgroup=40
+                comment="test repl 1"
+			 },
+       {
+                writer_hostgroup=50
+                reader_hostgroup=60
+                comment="test repl 2"
+        }
+)
+
 mysql_users:
 (
 	{