From 6c2e48b78366c7425780c5419a08f555d4851101 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Yavuz=20Ayd=C4=B1n?= <ya@snel.com>
Date: Mon, 26 Jul 2021 10:20:27 +0200
Subject: [PATCH] Added MYSQL_BIN, MYSQLADMIN_BIN and MYSQLADMIN_BIN variables

---
 backup_mysql.sh | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/backup_mysql.sh b/backup_mysql.sh
index 59eaa84..59d56f9 100755
--- a/backup_mysql.sh
+++ b/backup_mysql.sh
@@ -29,6 +29,7 @@
 #                                                                                            #
 ##############################################################################################
 #                                                                                            #
+# 2021/07/26  1.9  Added MYSQL_BIN, MYSQLADMIN_BIN and MYSQLADMIN_BIN variables              #
 # 2020/12/30  1.8  Added DBS_SKIP to prevent dumping certain databases                       #
 # 2020/02/27  1.7  Added username and password and set default retention to 1 day            #
 # 2019/01/28  1.6  Fixed backups of databases with dash (-) in name                          #
@@ -95,6 +96,11 @@ if [ "$?" == "0" ]; then
   USE_MYDUMPER=1
 fi
 
+# Set paths
+MYSQL_BIN=$(which mysql)
+MYSQLADMIN_BIN=$(which mysqladmin)
+MYSQLDUMP_BIN=$(which mysqldump)
+
 # Check if MYSQL_USER or MYSQL_PW is set and set options accordingly
 MYSQL_OPTS=""
 
@@ -111,7 +117,7 @@ MYSQL_OPTS="${MYSQL_OPTS} -p${MYSQL_PW}"
 fi
 # Get list of Databases except the pid file
 DBS_SKIP="'performance_schema','information_schema'"
-DBS_LIST=$(mysql ${MYSQL_OPTS} -s -N -e "SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT IN (${DBS_SKIP});")
+DBS_LIST=$(${MYSQL_BIN} ${MYSQL_OPTS} -s -N -e "SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT IN (${DBS_SKIP});")
 
 index=0
 # Check if we can connect to the mysql server; otherwise die
@@ -119,7 +125,7 @@ if [ ! "$(id -u -n)" = "root" ]; then
   echo -e "Error: $0 : Only user 'root' can run this script"
   exit 100
 fi
-mysqladmin ${MYSQL_OPTS} status >> /dev/null 2>&1
+${MYSQLADMIN_BIN} ${MYSQL_OPTS} status >> /dev/null 2>&1
 if [ $? -ne 0 ]; then
   echo "Error: Unable to connect to MySQL Server, exiting!"
   exit 101
@@ -129,7 +135,7 @@ fi
 START_DATETIME=$(date +%Y%m%d-%H%M)
 
 # Flush logs prior to the backup.
-mysql ${MYSQL_OPTS} -e "FLUSH LOGS"
+${MYSQL_BIN} ${MYSQL_OPTS} -e "FLUSH LOGS"
 
 if [ $USE_MYDUMPER -eq 1 ]; then
   # Use mydumper
@@ -145,10 +151,10 @@ else
     [ ! -d ${DB_BKP_FLDR} ]  && mkdir -p ${DB_BKP_FLDR} && chmod 700 ${DB_BKP_FLDR}
     # Get the schema of database with the stored procedures.
     # This will be the first file in the database backup folder
-    mysqldump ${MYSQL_OPTS} -R -d --single-transaction ${DB} | gzip -c > ${DB_BKP_FLDR}/000-DB_SCHEMA.sql.gz
+    ${MYSQLDUMP_BIN} ${MYSQL_OPTS} -R -d --single-transaction ${DB} | gzip -c > ${DB_BKP_FLDR}/000-DB_SCHEMA.sql.gz
     index=0
     #Get the tables and its type. Store it in an array.
-    table_types=($(mysql ${MYSQL_OPTS} -e "show table status from \`${DB}\`" | awk '{ if ($2 == "MyISAM" || $2 == "InnoDB") print $1,$2}'))
+    table_types=($(${MYSQL_BIN} ${MYSQL_OPTS} -e "show table status from \`${DB}\`" | awk '{ if ($2 == "MyISAM" || $2 == "InnoDB") print $1,$2}'))
     table_type_count=${#table_types[@]}
     # Loop through the tables and apply the mysqldump option according to the table type
     # The table specific SQL files will not contain any create info for the table schema.
@@ -163,7 +169,7 @@ else
       else
         DUMP_OPT="${DB} --no-create-info --single-transaction --tables --events --quote-names "
       fi
-      mysqldump ${MYSQL_OPTS} ${DUMP_OPT} ${table} |gzip -c > ${DB_BKP_FLDR}/${table}.sql.gz
+      ${MYSQLDUMP_BIN} ${MYSQL_OPTS} ${DUMP_OPT} ${table} |gzip -c > ${DB_BKP_FLDR}/${table}.sql.gz
       index=$((${index} + 2))
       #echo -e " - Total time : $(($(date +%s) - ${START}))\n"
     done