From 9b04b4ce731c32a72f28a47dbc9d57643c7490b0 Mon Sep 17 00:00:00 2001
From: Tianon Gravi <admwiggin@gmail.com>
Date: Fri, 31 Aug 2018 11:39:50 -0700
Subject: [PATCH] Add "mysqladmin" as a less-invasive healthcheck for MySQL
 (when it's available)

---
 mysql/docker-healthcheck | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/mysql/docker-healthcheck b/mysql/docker-healthcheck
index 83b053c..eefb613 100755
--- a/mysql/docker-healthcheck
+++ b/mysql/docker-healthcheck
@@ -18,8 +18,14 @@ args=(
 	--silent
 )
 
-if select="$(echo 'SELECT 1' | mysql "${args[@]}")" && [ "$select" = '1' ]; then
-	exit 0
+if command -v mysqladmin &> /dev/null; then
+	if mysqladmin "${args[@]}" ping > /dev/null; then
+		exit 0
+	fi
+else
+	if select="$(echo 'SELECT 1' | mysql "${args[@]}")" && [ "$select" = '1' ]; then
+		exit 0
+	fi
 fi
 
 exit 1