From c9f420fd4a49df59fc4aff655377598d2cebead8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Pavl=C3=AD=C4=8Dek?= <pavlicek.david@gmail.com>
Date: Thu, 19 Aug 2021 08:32:45 +0200
Subject: [PATCH] Fix for bad string format in etcd srv_suffix resolution
 (#2037)

Fix for silly mistake introduced in #2029. This time tested on real ETCD and DNS.
---
 patroni/dcs/etcd.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/patroni/dcs/etcd.py b/patroni/dcs/etcd.py
index aef0d2b2..ec510a04 100644
--- a/patroni/dcs/etcd.py
+++ b/patroni/dcs/etcd.py
@@ -290,7 +290,7 @@ class AbstractEtcdClientWithFailover(etcd.Client):
 
         ret = []
         for r in ['-client-ssl', '-client', '-ssl', '', '-server-ssl', '-server']:
-            r = r.format('{0}-{1}', r, srv_suffix) if srv_suffix else r
+            r = '{0}-{1}'.format(r, srv_suffix) if srv_suffix else r
             protocol = 'https' if '-ssl' in r else 'http'
             endpoint = '/members' if '-server' in r else ''
             for host, port in self.get_srv_record('_etcd{0}._tcp.{1}'.format(r, srv)):