关于MySQL启动的相关总结
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。

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