启停onesql,总共四个参数{start|stop|restart|status},只要稍微改一下头部的三个文件路径,即可完成mysql单实例的启停。
[#9(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 Usage:sh /etc/init.d/onesql5.6.26 {start|stop|restart|status}
详细执行效果如下:
[#2(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 status There is no mysqld process ! [#3(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 stop The mysqld process is already stopped ! [#4(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 start Starting MySQL. 150830 13:15:06 mysqld_safe Logging to '/data/mysql/mysql_3307/logs/error3307.log'. 150830 13:15:06 mysqld_safe Starting mysqld daemon with databases from /data/mysql/mysql_3307/data Starting MySQL.. SUCCESS! [#5(zhouxx_vm(node3:192.168.56.103))#root@node3~]# [#5(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 status root 2319 1 2 13:15 pts/0 00:00:00 /bin/sh /usr/local/onesql5.6/bin/mysqld_safe --defaults-file=/data/mysql/mysql_3307/my_3307.cnf --user=mysql --datadir=/data/mysql/mysql_3307/data --basedir=/usr/local/onesql5.6 mysql 3163 2319 44 13:15 pts/0 00:00:02 /usr/local/onesql5.6/bin/mysqld --defaults-file=/data/mysql/mysql_3307/my_3307.cnf --basedir=/usr/local/onesql5.6 --datadir=/data/mysql/mysql_3307/data --plugin-dir=/usr/local/onesql5.6/lib/plugin --user=mysql --log-error=/data/mysql/mysql_3307/logs/error3307.log --open-files-limit=58000 --pid-file=/data/mysql/mysql_3307/logs/mysql_3307.pid --socket=/tmp/mysql_3307.sock --port=3307 MySQL(pid=3163) Status -------------- /usr/local/onesql5.6/bin/mysql Ver 14.14 Distrib 5.6.25, for Linux (x86_64) using EditLine wrapper Connection id: 4 Current database: Current user: root@localhost SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server version: 5.6.26-log (OneSQL) Source distribution Protocol version: 10 Connection: Localhost via UNIX socket Server characterset: utf8 Db characterset: utf8 Client characterset: utf8 Conn. characterset: utf8 UNIX socket: /tmp/mysql_3307.sock Uptime: 5 sec Threads: 4 Questions: 5 Slow queries: 0 Opens: 18 Flush tables: 1 Open tables: 11 Queries per second avg: 1.000 -------------- [#6(zhouxx_vm(node3:192.168.56.103))#root@node3~]# [#6(zhouxx_vm(node3:192.168.56.103))#root@node3~]# [#6(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 stop 150830 13:15:19 mysqld_safe mysqld from pid file /data/mysql/mysql_3307/logs/mysql_3307.pid ended Stopping MySQL SUCCESS! [#7(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 restart The mysqld process is already stopped ! 150830 13:15:32 mysqld_safe Logging to '/data/mysql/mysql_3307/logs/error3307.log'. 150830 13:15:32 mysqld_safe Starting mysqld daemon with databases from /data/mysql/mysql_3307/data Starting MySQL. SUCCESS! [#8(zhouxx_vm(node3:192.168.56.103))#root@node3~]#service onesql5.6.26 status root 3266 1 3 13:15 pts/0 00:00:00 /bin/sh /usr/local/onesql5.6/bin/mysqld_safe --defaults-file=/data/mysql/mysql_3307/my_3307.cnf --user=mysql --datadir=/data/mysql/mysql_3307/data --basedir=/usr/local/onesql5.6 mysql 4107 3266 63 13:15 pts/0 00:00:02 /usr/local/onesql5.6/bin/mysqld --defaults-file=/data/mysql/mysql_3307/my_3307.cnf --basedir=/usr/local/onesql5.6 --datadir=/data/mysql/mysql_3307/data --plugin-dir=/usr/local/onesql5.6/lib/plugin --user=mysql --log-error=/data/mysql/mysql_3307/logs/error3307.log --open-files-limit=58000 --pid-file=/data/mysql/mysql_3307/logs/mysql_3307.pid --socket=/tmp/mysql_3307.sock --port=3307 MySQL(pid=4107) Status -------------- /usr/local/onesql5.6/bin/mysql Ver 14.14 Distrib 5.6.25, for Linux (x86_64) using EditLine wrapper Connection id: 4 Current database: Current user: root@localhost SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server version: 5.6.26-log (OneSQL) Source distribution Protocol version: 10 Connection: Localhost via UNIX socket Server characterset: utf8 Db characterset: utf8 Client characterset: utf8 Conn. characterset: utf8 UNIX socket: /tmp/mysql_3307.sock Uptime: 4 sec Threads: 4 Questions: 5 Slow queries: 0 Opens: 18 Flush tables: 1 Open tables: 11 Queries per second avg: 1.250 -------------- [#9(zhouxx_vm(node3:192.168.56.103))#root@node3~]#
详细脚本
[#10(zhouxx_vm(node3:192.168.56.103))#root@node3~]#cat /etc/init.d/onesql5.6.26 #!/bin/sh ##source /etc/profile #MYSQL_HOME=/usr/local/mysql5.6.26 MYSQL_HOME=/usr/local/onesql5.6 datadir=/data/mysql/mysql_3307/data mysql_cnf="/data/mysql/mysql_3307/my_3307.cnf" mysql_sock="/tmp/mysql_3307.sock" function start(){ mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` if [ "0" = "$mysqld_pid"0 ] then $MYSQL_HOME/bin/mysqld_safe --defaults-file="$mysql_cnf" --user=mysql --datadir="$datadir" --basedir="$MYSQL_HOME" & sleep 1 mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` mysqld_pid1="$mysqld_pid"0 pppct="." while [[ $mysqld_pid1 -lt 1 ]] do mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` mysqld_pid1="$mysqld_pid"0 if [ $mysqld_pid1 -gt 1 ] then #clear echo "Starting MySQL$pppct SUCCESS! " else #clear echo "Starting MySQL$pppct" fi pppct="$pppct." sleep 1 done else echo "A mysqld process already exists ! pid:$mysqld_pid" fi } function stop(){ mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` if [ "0" = "$mysqld_pid"0 ] then echo "The mysqld process is already stopped ! " else #/usr/local/mysql/bin/mysqladmin –S "$mysql_sock" shutdown & $MYSQL_HOME/bin/mysqladmin -S "$mysql_sock" shutdown & sleep 2 mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` if [ "0" = "$mysqld_pid"0 ] then echo "Stopping MySQL$pppct SUCCESS! " else mysqld_pid1="$mysqld_pid"0 pppct="." while [ "$mysqld_pid1" != "0" ] do mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` mysqld_pid1="$mysqld_pid"0 if [ "$mysqld_pid1" = "0" ] then #clear echo "Stopping MySQL$pppct SUCCESS! " else #clear echo "Stopping MySQL$pppct" fi pppct="$pppct." sleep 1 done fi fi } function status(){ mysqld_pid=`ps -ef|grep mysqld|grep "$mysql_sock" |grep -vE 'grep|mysqld_safe'|awk '{print $2}'` if [ "0" = "$mysqld_pid"0 ] then echo "There is no mysqld process ! " else echo -e "\n" ps -ef|grep mysqld|grep "$mysql_cnf"|grep -v grep echo -e "MySQL(pid=$mysqld_pid) Status \n " #mysqladmin -S "$mysql_sock" status $MYSQL_HOME/bin/mysql -S "$mysql_sock" -e "\s;" echo -e "\n" fi } case "$1" in start) start ;; stop) stop ;; status) status ;; restart) stop start ;; *) echo "Usage:sh $0 {start|stop|restart|status}" esac exit [#11(zhouxx_vm(node3:192.168.56.103))#root@node3~]#

MySQL在Web应用中的主要作用是存储和管理数据。1.MySQL高效处理用户信息、产品目录和交易记录等数据。2.通过SQL查询,开发者能从数据库提取信息生成动态内容。3.MySQL基于客户端-服务器模型工作,确保查询速度可接受。

构建MySQL数据库的步骤包括:1.创建数据库和表,2.插入数据,3.进行查询。首先,使用CREATEDATABASE和CREATETABLE语句创建数据库和表,然后用INSERTINTO语句插入数据,最后用SELECT语句查询数据。

MySQL适合初学者,因为它易用且功能强大。1.MySQL是关系型数据库,使用SQL进行CRUD操作。2.安装简单,需配置root用户密码。3.使用INSERT、UPDATE、DELETE、SELECT进行数据操作。4.复杂查询可使用ORDERBY、WHERE和JOIN。5.调试需检查语法,使用EXPLAIN分析查询。6.优化建议包括使用索引、选择合适数据类型和良好编程习惯。

MySQL适合初学者,因为:1)易于安装和配置,2)有丰富的学习资源,3)SQL语法直观,4)工具支持强大。尽管如此,初学者需克服数据库设计、查询优化、安全管理和数据备份等挑战。

是的,sqlisaprogramminglanguges pecialized fordatamanage.1)它具有焦点,focusingonwhattoachieveratherthanhow.2)sqlisessential forquerying forquerying,插入,更新,更新,和detletingdatainrelationalDatabases.3)

ACID属性包括原子性、一致性、隔离性和持久性,是数据库设计的基石。1.原子性确保事务要么完全成功,要么完全失败。2.一致性保证数据库在事务前后保持一致状态。3.隔离性确保事务之间互不干扰。4.持久性确保事务提交后数据永久保存。

MySQL既是数据库管理系统(DBMS),也与编程语言紧密相关。1)作为DBMS,MySQL用于存储、组织和检索数据,优化索引可提高查询性能。2)通过SQL与编程语言结合,嵌入在如Python中,使用ORM工具如SQLAlchemy可简化操作。3)性能优化包括索引、查询、缓存、分库分表和事务管理。

MySQL使用SQL命令管理数据。1.基本命令包括SELECT、INSERT、UPDATE和DELETE。2.高级用法涉及JOIN、子查询和聚合函数。3.常见错误有语法、逻辑和性能问题。4.优化技巧包括使用索引、避免SELECT*和使用LIMIT。


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