From 360150d57ba1c46578300e1d9b57de09139055f0 Mon Sep 17 00:00:00 2001
From: Victor LABORIE <vlaborie@evolix.fr>
Date: Mon, 20 May 2019 14:26:21 +0200
Subject: [PATCH] nagios-nrpe: fix redis_instances check when Redis port equal
 0

---
 CHANGELOG.md                                    |  1 +
 nagios-nrpe/files/plugins/check_redis_instances | 10 ++++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a1e4e4e..3b96cc13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ The **patch** part changes incrementally at each release.
 
 ### Fixed
 * rbenv: add check_mode for check rbenv and ruby versions
+* nagios-nrpe: fix redis_instances check when Redis port equal 0
 
 ### Security
 
diff --git a/nagios-nrpe/files/plugins/check_redis_instances b/nagios-nrpe/files/plugins/check_redis_instances
index 829cd81e..bd6ed634 100755
--- a/nagios-nrpe/files/plugins/check_redis_instances
+++ b/nagios-nrpe/files/plugins/check_redis_instances
@@ -13,9 +13,15 @@ instances=$(ls /etc/redis/redis-*.conf)
 for instance in ${instances}; do
     name=$(basename "${instance}"| sed '{s/redis-//;s/.conf//}')
     port=$(grep "port" "${instance}"|grep -oE "[0-9]*")
+    socket=$(grep "unixsocket " "${instance}"|awk '{ print $2 }')
     if [ -h "/etc/systemd/system/multi-user.target.wants/redis-server@${name}.service" ]; then
-        /usr/lib/nagios/plugins/check_tcp -p "${port}" >/dev/null 2>&1
-        ret="${?}"
+        if [ "${port}" -ne 0 ]; then
+            /usr/lib/nagios/plugins/check_tcp -p "${port}" >/dev/null 2>&1
+            ret="${?}"
+        else
+            /usr/lib/nagios/plugins/check_tcp -H "${socket}" >/dev/null 2>&1
+            ret="${?}"
+        fi
         if [ "${ret}" -ge 2 ]; then
             nb_crit=$((nb_crit + 1))
             output="${output}CRITICAL - ${name} (${port})\n"