55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
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Using MySQL in an OpenBSD environment
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If you are installing MySQL for the first time, you have to create
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a default database first. In order to create the database, please run
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@PREFIX@/bin/mysql_install_db
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The default limit in the GENERIC kernel for number of open
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files is not large enough for a database with more than a handful
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of tables, or a large number of connections. A server running
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such a database should have at least the following in
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/etc/sysctl.conf:
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kern.maxfiles=4096
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This number should be tuned depending on system use. You will also
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need to tune the values in the my.cnf file (examples available in
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@PREFIX@/share/mysql).
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By default, the _mysql user, and so the mysqld processes run in
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the login(1) class of "daemon". On a busy server, it may be advisable
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to put the _mysql user and processes in their own login(1) class
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with tuned resources, such as more open file descriptors etc.
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For example, add this to the login.conf(5) file:
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mysql:\
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:openfiles-cur=1024:\
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:openfiles-max=2048:\
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:tc=daemon:
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Rebuild the login.conf.db file if necessary:
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# cap_mkdb /etc/login.conf
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And start the server like this:
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if [ -x @PREFIX@/bin/mysqld_safe ] ; then
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su -c mysql root -c '@PREFIX@/bin/mysqld_safe >/dev/null 2>&1 &'
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echo -n ' mysql'
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fi
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mysqld_safe(1) is the recommended way to start a mysqld server,
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it creates the directory for the socket and adds some safety
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features such as restarting the server when an error occurs
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and logging runtime information to an error log file. Options
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may be passed in the [mysqld_safe] section of my.cnf.
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Note that the classes in login.conf(5) are used by login(1);
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they do not apply to normal process startup, hence the use of su(1).
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For larger servers and dedicated database servers, these numbers
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and memory limits (e.g. datasize and stacksize) may also need to be
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increased. Please report any changes and experiences to the package
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maintainers so that we can update this file for future versions.
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