Add script restore_database.sh.

conf/restore_database.conf.sample

@@ -0,0 +1,40 @@
+# ----------------------------------------------------
+# - Parameter Settings for Script '.restore_database.sh'
+# ----------------------------------------------------
+
+# - MySQL / MariaDB / Percona credentials
+
+# - DATABASE_CREDENTIALS_ARGS
+# -
+# - Giving password on command line is insecure an sind mysql 5.5
+# - you will get a warning doing so.
+# - 
+# - Reading username/password from file ist also possible, using MySQL/MariaDB
+# - commandline parameter '--defaults-file'.
+# - 
+# - Since Version 5.6, that method is considered as insecure. 
+# - To avoid giving the password on command line, we use an 
+# - encrypted option file
+# -
+# -    Create (encrypted) option file:
+# -    $ mysql_config_editor set --login-path=local --socket=/var/run/mysqld/mysqld.sock  --user=backup --password
+# -    $ Password:
+# -
+# -    Use of option file:
+# -    $ mysql --login-path=local ...
+# -
+# - Example
+# -    # MySQL
+# -    DATABASE_CREDENTIALS_ARGS="--login-path=local"
+# -    DATABASE_CREDENTIALS_ARGS="--defaults-file=/etc/mysql/debian.cnf" (Debian default)
+# -    DATABASE_CREDENTIALS_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
+# -
+# -    # MariaDB 10.4.x
+# -    DATABASE_CREDENTIALS_ARGS="-u root -S /run/mysqld/mysqld.sock"
+# -
+# - Note:
+# -    Script tries to determin database credentials. So it's a good idea, to leave this
+# -    Parameter empty. Only set it here, if automatic detection failed.
+# -
+#DATABASE_CREDENTIALS_ARGS=""
+