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    2.4.12. Installing MySQL on i5/OS

    The i5/OS POWER MySQL package was created in cooperation with IBM. MySQL works within the Portable Application Solution Environment (PASE) on the System i series of hardware and will also provide database services for the Zend Core for i5/OS.

    MySQL for i5/OS is provided as a save file (.savf) package that can be downloaded and installed directly without any additional installation steps required.

    MySQL is only supported on i5/OS V5R4 or later releases. The i5/OS PASE must be installed for MySQL to operate. You must be able to login as a user in *SECOFR class.

    You should the installation notes and tips for i5/OS before starting installation. See i5/OS Installation Notes.

    Note

    The installation package will use an existing configuration if you have previously installed MySQL (which is identified by looking for the file /etc/my.cnf). The values for the data directory (DATADIR) and owner of the MySQL files (USRPRF) specified during the installation will be ignored, and the values determined from the /etc/my.cnf will be used instead.

    Do you need help?X

    If you want to change these parameters during a new install, you should temporarily rename /etc/my.cnf, install MySQL using the new parameters you want to use, and then merge your previous /etc/my.cnf configuration settings with the new /etc/my.cnf file that is created during installation.

    To install MySQL on i5/OS, follow these steps:

    1. Create a user profile MYSQL. The MYSQL user profile will own all the MySQL files and databases and be the active user used when the MySQL server is running. The profile should be disabled so that you cannot log in as the MySQL user. To create a user profile, use CRTUSRPRF: 

      CRTUSRPRF USRPRF(MYSQL) STATUS(*DISABLED) TEXT('MySQL user id')

    2. On the System i machine, create a save file that will be used to receive the downloaded installation save file. The file should be located within the General Purpose Library (QGPL): 

      CRTSAVF FILE(QGPL/MYSQLINST)

    3. Download the MySQL installation save file in 32-bit (mysql-5.0.42-i5os-power-32bit.savf) or 64-bit (mysql-5.0.42-i5os-power-64bit.savf) from MySQL Downloads.

    4. You need to FTP the downloaded .savf file directly into the QGPL/MYSQLINST file on the System i server. You can do this through FTP using the following steps after logging in to the System i machine: 

      ftp> bin
ftp> cd qgpl
ftp> put mysql-
5.0.42-i5os-power.savf mysqlinst

    5. Log into the System i server using a user in the *SECOFR class, such as the QSECOFR user ID.

    6. You need to restore the installation library stored in the .savf save file:

      Do you need more help?X
      RSTLIB MYSQLINST DEV(*SAVF) SAVF(QGPL/MYSQLINST)

    7. You need to execute the installation command, MYSQLINST/INSMYSQL. You can specify three parameter settings during installation:

      • DIR('/opt/mysql') sets the installation location for the MySQL files. The directory will be created if it does not already exist.

      • DATADIR('/QOpenSys/mysal/data') sets the location of the directory that will be used to store the database files and binary logs. The default setting is /QOpenSys/mysql/data. Note that if the installer detects an existing installation (due to the existence of /etc/my.cnf), then this parameter will be ignored.

      • USRPRF(MYSQL) sets the user profile that will own the files that are installed. The profile will be created if it does not already exist.

      MySQL can be installed anywhere, for this example we will assume MySQL has been installed into /opt/mysql. The MYSQL user profile that was created earlier in this sequence should be used for the profile: 

      MYSQLINST/INSMYSQL DIR('/opt/mysql') DATADIR('/opt/mysqldata') USRPRF(MYSQL)

      If you are updating an installation over an existing MySQL installation, you should use the same parameter values that were used when MySQL was originally installed.

      The installation copies all the necessary files into a directory matching the package version (for example mysql-5.0.42-i5os-power-32bit), sets the ownership on those files, sets up the MySQL environment and creates the MySQL configuration file (in /etc/my.cnf) completing all the steps in a typical binary installation process automatically. If this is a new installation of MySQL, or if the installer detects that this is a new version (because the /etc/my.cnf file does not exist), then the initial core MySQL databases will also be created during installation.

    8. Once the installation has completed, you can delete the installation file:

      Can we help you?X
      DLTLIB LIB(MYSQLINST)

    To start MySQL:

    1. Log into the System i server using a user within the *SECOFR class, such as the QSECOFR user ID.

      Note

      You should start mysqld_safe using a user that in the PASE environment has the id=0 (the equivalent of the standard Unix root user). If you do not use a user with this ID then the system will be unable to change the user when executing mysqld as set using --user option. If this happens, mysqld may be unable to read the files located within the MySQL data directory and the execution will fail.

    2. Enter the PASE environment using call qp2term.

    3. Start the MySQL server by changing to the installation directory and running mysqld_safe, specifying the user name used to install the server. The installer conveniently installs a symbolic link to the installation directory (mysql-5.0.42-i5os-power-32bit) as /opt/mysql/mysql: 

      > cd /opt/mysql/mysql
> bin/mysqld_safe --user=mysql &

      You should see a message similar to the following: 

      Starting mysqld daemon with databases »
     from /opt/mysql/mysql-enterprise-5.0.42-i5os-power-32bit/data

    If you are having problems starting MySQL server, see Section 2.4.16.2.3, “Starting and Troubleshooting the MySQL Server”.

    To stop MySQL:

    Can't find what you're looking for?X

    1. Log into the System i server using the *SECOFR class, such as the QSECOFR user ID.

    2. Enter the PASE environment using call qp2term.

    3. Stop the MySQL server by changing into the installation directory and running mysqladmin, specifying the user name used to install the server: 

      > cd /opt/mysql/mysql
> bin/mysqladmin -u root shutdown

      If the session that you started and stopped MySQL are the same, you may get the log output from mysqld: 

         STOPPING server from pid file »
     /opt/mysql/mysql-enterprise-5.0.42-i5os-power-32bit/data/I5DBX.RCHLAND.IBM.COM.pid                                          
   070718 10:34:20  mysqld ended

      If the sessions used to start and stop MySQL are different, you will not receive any confirmation of the shutdown.

    Note and tips


    User Comments

    Posted by Richard Mansell on September 7 2007 8:11am[Delete] [Edit]

    I have automated the startup process by creating a CLP and having it autostart in the ZENDCORE PHP SBS. So that when the Zend SBS is available, so is the MySQL daemon. I hope it may help.

    Regards
    Richard.
    Senior iSeries Systems Engineer
    Microlise Group Limited.

    If anyone wants the source here it is:

    PGM

    DCL VAR(&CMD) TYPE(*CHAR) LEN(80)
    DCL VAR(&PARM1) TYPE(*CHAR) LEN(20)
    DCL VAR(&NULL) TYPE(*CHAR) LEN(1) VALUE(X'00')

    CHGVAR VAR(&CMD) VALUE('/usr/local/mysql-5.0.37-aix5.2-powerpc-64bit/bin/mysql+
    d_safe ')
    CHGVAR VAR(&PARM1) VALUE(' --user=mysql &')
    CHGVAR VAR(&CMD) VALUE(&CMD *TCAT &NULL)
    CHGVAR VAR(&PARM1) VALUE(&PARM1 *TCAT &NULL)

    PASESHELL:
    CALL PGM(QP2SHELL) PARM(&CMD)

    ENDPGM

    Add your own comment.
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