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# mysql
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Install MySQL
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## Tasks
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Tasks are extracted in several files, included in `tasks/main.yml` :
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* `packages.yml` : packages installation ;
* `users.yml` : replacement of `root` user by `mysqladmin` user ;
* `config.yml` : configurations ;
* `datadir.yml` : data directory customization ;
* `tmpdir.yml` : temporary directory customization ;
* `nrpe.yml` : `nrpe` user for Nagios checks ;
* `munin.yml` : Munin plugins ;
* `log2mail.yml` : log2mail patterns ;
* `utils.yml` : useful tools.
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## Available variables
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* `mysql_variant` : install Oracle's MySQL or MariaDB (default: `oracle` ) ;
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* `mysql_replace_root_with_mysqladmin` : switch from `root` to `mysqladmin` user or not ;
* `mysql_thread_cache_size` : number of threads for the cache ;
* `mysql_innodb_buffer_pool_size` : amount of RAM dedicated to InnoDB ;
* `mysql_custom_datadir` : custom datadir
* `mysql_custom_tmpdir` : custom tmpdir.
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* `general_alert_email` : email address to send various alert messages (default: `root@localhost` ).
* `log2mail_alert_email` : email address to send Log2mail messages to (default: `general_alert_email` ).
* `general_scripts_dir` : general directory for scripts installation (default: `/usr/local/bin` ).
* `mysql_scripts_dir` : email address to send Log2mail messages to (default: `general_scripts_dir` ).
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* `mysql_force_new_nrpe_password` : change the password for NRPE even if it exists already (default: `False` ).
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NB : changing the _datadir_ location can be done multiple times, as long as it is not restored to the default initial location, (because a symlink is created and can't be switched back, yet).
