diff --git a/galera/files/bootstrap.sh b/galera/files/bootstrap.sh
index e52b369..a6ce29c 100644
--- a/galera/files/bootstrap.sh
+++ b/galera/files/bootstrap.sh
@@ -1,20 +1,19 @@
-#!/bin/bash
+#!/bin/sh
 
 service {{ service.service }} start
 
-counter=60
+counter=${1:-60}
 retries=0
 
 while [ $counter -gt 0 ]
 do
-  mysql -u {{ service.admin.user }} -p{{ service.admin.password }} -e"quit"
-  if [[ $? -eq 0 ]]; then
+  if mysql -u {{ service.admin.user }} -p{{ service.admin.password }} -e"quit"; then
     echo "Sucessfully connected to the MySQL service ($retries retries)."
     exit 0
   fi
   counter=$(( counter - 1 ))
   retries=$(( retries + 1 ))
-  sleep 4
+  sleep ${2:-4}
 done
 
 echo "Failed to connect to the MySQL service after $retries retries."
diff --git a/galera/files/init_bootstrap.sh b/galera/files/init_bootstrap.sh
index 4683d1a..a98d9b2 100644
--- a/galera/files/init_bootstrap.sh
+++ b/galera/files/init_bootstrap.sh
@@ -1,20 +1,19 @@
-#!/bin/bash
+#!/bin/sh
 
 service {{ service.service }} start
 
-counter=60
+counter=${1:-60}
 retries=0
 
 while [ $counter -gt 0 ]
 do
-  mysql -u root -e"quit"
-  if [[ $? -eq 0 ]]; then
+  if mysql -u root -e"quit"; then
     echo "Sucessfully connected to the MySQL service ($retries retries)."
     exit 0
   fi
   counter=$(( counter - 1 ))
   retries=$(( retries + 1 ))
-  sleep 2
+  sleep ${2:-4}
 done
 
 echo "Failed to connect to the MySQL service after $retries retries."