Home Database Mysql Tutorial 关于MySQL启动的相关总结

关于MySQL启动的相关总结

Jun 07, 2016 pm 04:57 PM
mysql database

刚开始成功了的安装了 MySQL ,但是启动是最原始的启动方式。/usr/local/mysql/bin/mysqld_safe --user=mysql今天突然想起了 可

刚开始成功了的安装了 MySQL ,但是启动是最原始的启动方式。

/usr/local/mysql/bin/mysqld_safe --user=mysql&

今天突然想起了  可以用 service启动 以及 init.d 里启动,于是查找,但是无果。

因为我总觉得  chkconfig 是类似于windows里的菜单里的 启动  差不多 ,结果我好像错了。

他好像是类似于services.msc这个,呵呵,这个有待验证。

先说下 init.d那个启动方式吧。

# /etc/rc.d/init.d/mysql start

如果一切正常,你将看到以下的信息出现:

Starting mysqld daemon with databases from /var/lib/mysql

具体操作步骤:

在MySQL二进制包里面,有一个叫myslq.server的启动脚本程序。把它复制到/etc/rc.d/init.d目录里面:

# cd /etc/rc.d/init.d

# cp /usr/local/mysql/support-files/mysql.server mysql

接着把它的属性改为“x”(executable,可执行)

# chmod +x mysql

这样的对 你就可以用   /etc/rc.d/init.d/mysql start  启动服务了

此处,纠正下一个错误的观点。

以为  先 cd 到  init.d目录 ,然后   mysql start就可以启动服务了,结果是错误的,,必须

./mysql  start  才能启动,因为 ./才是当前目录!!!!!

再说下 service mysql start 这个。

想要这样启动,必须先把 脚本加到服务里,关于服务 chkconfig解释

chkconfig命令主要用来更新(启动或停止)和查询系统服务的运行级信息。谨记chkconfig不是立即自动禁止或激活一个服务,它只是简单的改变了符号连接。

具体操作 :

# /sbin/chkconfig --del mysql

# /sbin/chkconfig --add mysql

每个被chkconfig管理的服务需要在对应的init.d下的脚本加上两行或者更多行的注释。第一行告诉 chkconfig缺省启动的运行级以及启动和停止的优先级。如果某服务缺省不在任何运行级启动,那么使用 - 代替运行级。第二行对服务进行描述,可以用\ 跨行注释。

其实,init.d启动脚本里存在  start stop方法,   执行 service mysql start 方法也就是去init.d里去找相应脚本的 对应方法。

不过这里也是自己猜测,没那能力去验证。。

其实,总结下,也就2个误区:

一个是当前目录应该是    ./   ,虽然知道这个 但是用的时候还是出错。

另一个就是   chkconfig 是服务管理, 不是单纯windows里那个开机启动。

linux

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