title: Is mysqld.cnf my current Mysql config file?
body: <p>I'm trying to support full unicode in Mysql (5.7). I've been following <a href="https://mathiasbynens.be/notes/mysql-utf8mb4" rel="nofollow noreferrer">this guide</a>.</p>
  
  <p>Unfortunately I've found myself stuck at editing the <code>my.cnf</code> config file. I ran <code>mysqladmin --help</code> and checked the locations mentioned:</p>
  
  <pre><code>Default options are read from the following files in the given order:
  /etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf 
  </code></pre>
  
  <p>However all of these were empty except for <code>/etc/mysql/my.cnf</code>, which contains the following:</p>
  
  <pre><code>#
  # The MySQL database server configuration file.
  #
  # You can copy this to one of:
  # - "/etc/mysql/my.cnf" to set global options,
  # - "~/.my.cnf" to set user-specific options.
  # 
  # One can use all long options that the program supports.
  # Run program with --help to get a list of available options and with
  # --print-defaults to see which it would actually understand and use.
  #
  # For explanations see
  # http://dev.mysql.com/doc/mysql/en/server-system-variables.html
  
  #
  # * IMPORTANT: Additional settings that can override those from this file!
  #   The files must end with '.cnf', otherwise they'll be ignored.
  #
  
  !includedir /etc/mysql/conf.d/
  !includedir /etc/mysql/mysql.conf.d/
  </code></pre>
  
  <p>So I went to check <code>/etc/mysql/mysql.conf.d</code>, which contains the file <code>mysqld.cnf</code>:</p>
  
  <pre><code>#
  # The MySQL database server configuration file.
  #
  # You can copy this to one of:
  # - "/etc/mysql/my.cnf" to set global options,
  # - "~/.my.cnf" to set user-specific options.
  # 
  # One can use all long options that the program supports.
  # Run program with --help to get a list of available options and with
  # --print-defaults to see which it would actually understand and use.
  #
  # For explanations see
  # http://dev.mysql.com/doc/mysql/en/server-system-variables.html
  
  # This will be passed to all mysql clients
  # It has been reported that passwords should be enclosed with ticks/quotes
  # escpecially if they contain "#" chars...
  # Remember to edit /etc/mysql/debian.cnf when changing the socket location.
  
  # Here is entries for some specific programs
  # The following values assume you have at least 32M ram
  
  [mysqld_safe]
  socket      = /var/run/mysqld/mysqld.sock
  nice        = 0
  
  [mysqld]
  #
  # * Basic Settings
  #
  user        = mysql
  pid-file    = /var/run/mysqld/mysqld.pid
  socket      = /var/run/mysqld/mysqld.sock
  port        = 3306
  basedir     = /usr
  datadir     = /var/lib/mysql
  tmpdir      = /tmp
  lc-messages-dir = /usr/share/mysql
  skip-external-locking
  #
  # Instead of skip-networking the default is now to listen only on
  # localhost which is more compatible and is not less secure.
  bind-address        = 127.0.0.1
  #
  # * Fine Tuning
  #
  key_buffer_size     = 16M
  max_allowed_packet  = 16M
  thread_stack        = 192K
  thread_cache_size       = 8
  # This replaces the startup script and checks MyISAM tables if needed
  # the first time they are touched
  myisam-recover-options  = BACKUP
  #max_connections        = 100
  #table_open_cache       = 64
  #thread_concurrency     = 10
  #
  # * Query Cache Configuration
  #
  query_cache_limit   = 1M
  query_cache_size        = 16M
  #
  # * Logging and Replication
  #
  # Both location gets rotated by the cronjob.
  # Be aware that this log type is a performance killer.
  # As of 5.1 you can enable the log at runtime!
  #general_log_file        = /var/log/mysql/mysql.log
  #general_log             = 1
  #
  # Error log - should be very few entries.
  #
  log_error = /var/log/mysql/error.log
  #
  # Here you can see queries with especially long duration
  #slow_query_log     = 1
  #slow_query_log_file    = /var/log/mysql/mysql-slow.log
  #long_query_time = 2
  #log-queries-not-using-indexes
  #
  # The following can be used as easy to replay backup logs or for replication.
  # note: if you are setting up a replication slave, see README.Debian about
  #       other settings you may need to change.
  #server-id      = 1
  #log_bin            = /var/log/mysql/mysql-bin.log
  expire_logs_days    = 10
  max_binlog_size   = 100M
  #binlog_do_db       = include_database_name
  #binlog_ignore_db   = include_database_name
  #
  # * InnoDB
  #
  # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
  # Read the manual for more InnoDB related options. There are many!
  #
  # * Security Features
  #
  # Read the manual, too, if you want chroot!
  # chroot = /var/lib/mysql/
  #
  # For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
  #
  # ssl-ca=/etc/mysql/cacert.pem
  # ssl-cert=/etc/mysql/server-cert.pem
  # ssl-key=/etc/mysql/server-key.pem
  </code></pre>
  
  <p>Is this my current configuration? Or do I need to copy this somewhere to have one? I'm not super familiar with Mysql so any help would be very appreciated.</p>