From 83662f71cba6c3af3fe7e6bdcbf1346585a3fc24 Mon Sep 17 00:00:00 2001
From: Oleksii Kliukin <oleksii.kliukin@zalando.de>
Date: Fri, 16 Oct 2015 16:38:05 +0200
Subject: [PATCH] Exit right away if the node sysid is different from the
 cluster's one

---
 patroni/ha.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/patroni/ha.py b/patroni/ha.py
index 82921a74..283d3678 100644
--- a/patroni/ha.py
+++ b/patroni/ha.py
@@ -2,6 +2,7 @@ import json
 import logging
 import psycopg2
 import requests
+import sys
 
 from patroni.async_executor import AsyncExecutor
 from patroni.exceptions import DCSError, PostgresConnectionException
@@ -383,7 +384,8 @@ class Ha:
             else:
                 # check if we are allowed to join
                 if self.sysid_valid(self.cluster.initialize) and self.cluster.initialize != self.state_handler.sysid:
-                    return "system ID mismatch, node {0} belongs to a different cluster".format(self.state_handler.name)
+                    logger.fatal("system ID mismatch, node {0} belongs to a different cluster".format(self.state_handler.name))
+                    sys.exit(1)
 
             # try to start dead postgres
             if not self.state_handler.is_healthy():