1.mysqld： mysql server
[[email protected] bin]# ./mysqld --user=mysql & [[email protected] bin]# ps -ef|grep mysql |grep -v grep mysql 11165 11100 2 01:06 pts/1 00:00:00 ./mysqld --user=mysql
mysqld有很多参数选项，可以使用以下命令查看所有的选项列表：
shell> mysqld --verbose --help
2.mysqld_safe： mysqld启动脚本
建议使用mysqld_safe启动mysql，mysqld_safe加入了一些安全特性，比如发生错误时重启mysql server、将运行时日志记录到错误日志文件。
mysqld_safe会读取my.cnf中的[mysqld]、[server]、[mysqld_safe]部分的配置信息。此外，为了向后兼容，还会读取[safe_mysqld]部分的配置信息，不过现在的版本中都应该写成[mysqld_safe]。
[[email protected] bin]# ./mysqld_safe --user=mysql & [1] 11482 [[email protected] bin]# 151217 01:16:00 mysqld_safe Logging to ‘/var/mysql/data/dbtest.err‘. 151217 01:16:00 mysqld_safe Starting mysqld daemon with databases from /var/mysql/data [[email protected] bin]# ps -ef|grep mysql|grep -v grep root 11482 11100 0 01:15 pts/1 00:00:00 /bin/sh ./mysqld_safe --user=mysql mysql 11632 11482 3 01:15 pts/1 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/var/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/mysql/data/dbtest.err --pid-file=/var/mysql/data/dbtest.pid # 使用mysqld_safe启动mysql server后，mysqld异常终端后，会自动重启 [[email protected] bin]# kill -9 11632 [[email protected] bin]# ./mysqld_safe: line 166: 11632 Killed nohup /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/var/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/mysql/data/dbtest.err --pid-file=/var/mysql/data/dbtest.pid < /dev/null >> /var/mysql/data/dbtest.err 2>&1 151217 01:16:17 mysqld_safe Number of processes running now: 0 151217 01:16:17 mysqld_safe mysqld restarted [[email protected] bin]# ps -ef|grep mysql|grep -v grep root 11482 11100 0 01:15 pts/1 00:00:00 /bin/sh ./mysqld_safe --user=mysql mysql 11673 11482 5 01:16 pts/1 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/var/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/mysql/data/dbtest.err --pid-file=/var/mysql/data/dbtest.pid
3.mysql.server： mysqld启动脚本
mysql.server也是通过调用mysqld_safe脚本来启动mysql server
[[email protected] bin]# ./mysql.server start Starting MySQL[ OK ] [[email protected] bin]# ps -ef|grep mysql|grep -v grep root 11783 1 0 01:23 pts/1 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/var/mysql/data --pid-file=/var/mysql/data/dbtest.pid mysql 11948 11783 2 01:23 pts/1 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/var/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/mysql/data/dbtest.err --pid-file=/var/mysql/data/dbtest.pid
4.mysqld_multi： 管理多个mysql server
时间： 2024-08-19 05:20:49