From 3907a545b0080dcdd2d5b42543997d4cab5703d2 Mon Sep 17 00:00:00 2001
From: Ian Barwick <barwick@gmail.com>
Date: Thu, 18 Oct 2018 12:17:06 +0900
Subject: [PATCH] repmgrd: ensure witness node doesn't try and follow another
 witness

Theoretically there should never be more than one witness node
visible here, but it's not impossible to rule it out, so add a
check just in case.
---
 repmgrd-physical.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/repmgrd-physical.c b/repmgrd-physical.c
index a819dec5..31178833 100644
--- a/repmgrd-physical.c
+++ b/repmgrd-physical.c
@@ -1467,6 +1467,12 @@ monitor_streaming_witness(void)
 							continue;
 						}
 
+						/* skip node if configured as a witness node - we can't possibly "follow" that */
+						if (cell->node_info->type == WITNESS)
+						{
+							continue;
+						}
+
 						cell->node_info->conn = establish_db_connection(cell->node_info->conninfo, false);
 
 						if (PQstatus(cell->node_info->conn) != CONNECTION_OK)