created mysqlbackup.sh

assets/mysqlbackup.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+# Simple script to backup MySQL databases
+
+# Parent backup directory
+backup_parent_dir="/var/backups/mysql"
+
+# MySQL settings
+mysql_user="root"
+mysql_password="ROOTPASSWD"
+
+# Read MySQL password from stdin if empty
+# if [ -z "${mysql_password}" ]; then
+#   echo -n "Enter MySQL ${mysql_user} password: "
+#   read -s mysql_password
+#   echo
+# fi
+
+# Check MySQL password
+echo exit | mysql --user=${mysql_user} --password=${mysql_password} -B 2>/dev/null
+if [ "$?" -gt 0 ]; then
+  echo "MySQL ${mysql_user} password incorrect"
+  exit 1
+else
+  echo "MySQL ${mysql_user} password correct."
+fi
+
+# TODO rotate backups
+
+# Create backup directory and set permissions
+backup_date=`date +%Y_%m_%d_%H_%M`
+backup_dir="${backup_parent_dir}/${backup_date}"
+echo "Backup directory: ${backup_dir}"
+mkdir -p "${backup_dir}"
+chmod 700 "${backup_dir}"
+
+# Get MySQL databases
+mysql_databases=`echo 'show databases' | mysql --user=${mysql_user} --password=${mysql_password} -B | sed /^Database$/d`
+
+# Backup and compress each database
+for database in $mysql_databases
+do
+  if [ "${database}" == "information_schema" ] || [ "${database}" == "performance_schema" ]; then
+        additional_mysqldump_params="--skip-lock-tables"
+  else
+        additional_mysqldump_params=""
+  fi
+  echo "Creating backup of \"${database}\" database"
+  mysqldump ${additional_mysqldump_params} --user=${mysql_user} --password=${mysql_password} ${database} | gzip > "${backup_dir}/${database}.gz"
+  chmod 600 "${backup_dir}/${database}.gz"
+done