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 2.5 Installing MySQL on Mac OS X
 ================================
 
 You can install MySQL on Mac OS X 10.2.x (`Jaguar') or newer using a
 Mac OS X binary package in PKG format instead of the binary tarball
 distribution. Please note that older versions of Mac OS X (for example,
 10.1.x) are *not* supported by this package.
 
 The package is located inside a disk image (`.dmg') file that you first
 need to mount by double-clicking its icon in the Finder. It should then
 mount the image and display its contents.
 
 To obtain MySQL, see  getting-mysql.
 
 * Before proceeding with the installation, be sure to shut down
 all running MySQL server instances by either using the MySQL Manager
 Application (on Mac OS X Server) or via `mysqladmin shutdown' on the
 command line.
 
 To actually install the MySQL PKG file, double-click on the package
 icon. This launches the Mac OS X Package Installer, which guides you
 through the installation of MySQL.
 
 Due to a bug in the Mac OS X package installer, you may see this error
 message in the destination disk selection dialog:
 
      You cannot install this software on this disk. (null)
 
 If this error occurs, simply click the `Go Back' button once to return
 to the previous screen. Then click `Continue' to advance to the
 destination disk selection again, and you should be able to choose the
 destination disk correctly. We have reported this bug to Apple and it is
 investigating this problem.
 
 The Mac OS X PKG of MySQL installs itself into
 `/usr/local/mysql-VERSION' and also installs a symbolic link,
 `/usr/local/mysql', that points to the new location. If a directory
 named `/usr/local/mysql' exists, it is renamed to
 `/usr/local/mysql.bak' first. Additionally, the installer creates the
 grant tables in the `mysql' database by executing `mysql_install_db'.
 
 The installation layout is similar to that of a `tar' file binary
 distribution; all MySQL binaries are located in the directory
 `/usr/local/mysql/bin'. The MySQL socket file is created as
 `/tmp/mysql.sock' by default. See  installation-layouts.
 
 MySQL installation requires a Mac OS X user account named `mysql'. A
 user account with this name should exist by default on Mac OS X 10.2
 and up.
 
 If you are running Mac OS X Server, a version of MySQL should already
 be installed. The following table shows the versions of MySQL that ship
 with Mac OS X Server versions.
 
 *Mac OS X Server       *MySQL Version*
 Version*               
 10.2-10.2.2            3.23.51
 10.2.3-10.2.6          3.23.53
 10.3                   4.0.14
 10.3.2                 4.0.16
 10.4.0                 4.1.10a
 
 This manual section covers the installation of the official MySQL Mac
 OS X PKG only. Make sure to read Apple's help information about
 installing MySQL: Run the `Help View' application, select `Mac OS X
 Server' help, do a search for `MySQL,' and read the item entitled
 `Installing MySQL.'
 
 For pre-installed versions of MySQL on Mac OS X Server, note especially
 that you should start `mysqld' with `safe_mysqld' instead of
 `mysqld_safe' if MySQL is older than version 4.0.
 
 If you previously used Marc Liyanage's MySQL packages for Mac OS X from
 `http://www.entropy.ch', you can simply follow the update instructions
 for packages using the binary installation layout as given on his pages.
 
 If you are upgrading from Marc's 3.23.xx versions or from the Mac OS X
 Server version of MySQL to the official MySQL PKG, you also need to
 convert the existing MySQL privilege tables to the current format,
 because some new security privileges have been added. See 
 mysql-upgrade.
 
 If you want MySQL to start automatically during system startup, you
 also need to install the MySQL Startup Item. It is part of the Mac OS X
 installation disk images as a separate installation package. Simply
 double-click the MySQLStartupItem.pkg icon and follow the instructions
 to install it.
 
 Note that the Startup Item need be installed only once! There is no
 need to install it each time you upgrade the MySQL package later.
 
 The Startup Item for MySQL is installed into
 `/Library/StartupItems/MySQLCOM'. (Before MySQL 4.1.2, the location was
 `/Library/StartupItems/MySQL', but that collided with the MySQL Startup
 Item installed by Mac OS X Server.) Startup Item installation adds a
 variable `MYSQLCOM=-YES-' to the system configuration file
 `/etc/hostconfig'. If you want to disable the automatic startup of
 MySQL, simply change this variable to `MYSQLCOM=-NO-'.
 
 On Mac OS X Server, the default MySQL installation uses the variable
 `MYSQL' in the `/etc/hostconfig' file. The MySQL AB Startup Item
 installer disables this variable by setting it to `MYSQL=-NO-'. This
 avoids boot time conflicts with the `MYSQLCOM' variable used by the
 MySQL AB Startup Item. However, it does not shut down a running MySQL
 server. You should do that yourself.
 
 After the installation, you can start up MySQL by running the following
 commands in a terminal window. You must have administrator privileges
 to perform this task.
 
 If you have installed the Startup Item use this command:
 
      shell> sudo /Library/StartupItems/MySQLCOM/MySQLCOM start
      (ENTER YOUR PASSWORD, IF NECESSARY)
      (PRESS CONTROL-D OR ENTER "EXIT" TO EXIT THE SHELL)
 
 If you don't use the Startup Item, enter the following command sequence:
 
      shell> cd /usr/local/mysql
      shell> sudo ./bin/mysqld_safe
      (ENTER YOUR PASSWORD, IF NECESSARY)
      (PRESS CONTROL-Z)
      shell> bg
      (PRESS CONTROL-D OR ENTER "EXIT" TO EXIT THE SHELL)
 
 You should be able to connect to the MySQL server, for example, by
 running `/usr/local/mysql/bin/mysql'.
 
 * The accounts that are listed in the MySQL grant tables
 initially have no passwords.  After starting the server, you should set
 up passwords for them using the instructions in 
 post-installation.
 
 You might want to add aliases to your shell's resource file to make it
 easier to access commonly used programs such as `mysql' and
 `mysqladmin' from the command line. The syntax for `bash' is:
 
      alias mysql=/usr/local/mysql/bin/mysql
      alias mysqladmin=/usr/local/mysql/bin/mysqladmin
 
 For `tcsh', use:
 
      alias mysql /usr/local/mysql/bin/mysql
      alias mysqladmin /usr/local/mysql/bin/mysqladmin
 
 Even better, add `/usr/local/mysql/bin' to your `PATH' environment
 variable. For example, add the following line to your `$HOME/.bashrc'
 file if your shell is `bash':
 
      PATH=${PATH}:/usr/local/mysql/bin
 
 Add the following line to your `$HOME/.tcshrc' file if your shell is
 `tcsh':
 
      setenv PATH ${PATH}:/usr/local/mysql/bin
 
 If no `.bashrc OR '`.tcshrc' file exists in your home directory, create
 it with a text editor.
 
 If you are upgrading an existing installation, note that installing a
 new MySQL PKG does not remove the directory of an older installation.
 Unfortunately, the Mac OS X Installer does not yet offer the
 functionality required to properly upgrade previously installed
 packages.
 
 To use your existing databases with the new installation, you'll need
 to copy the contents of the old data directory to the new data
 directory. Make sure that neither the old server nor the new one is
 running when you do this. After you have copied over the MySQL database
 files from the previous installation and have successfully started the
 new server, you should consider removing the old installation files to
 save disk space. Additionally, you should also remove older versions of
 the Package Receipt directories located in
 `/Library/Receipts/mysql-VERSION.pkg'.
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