關於mysql啟動問題---mysqld_safe mysqld from pid file * ended

#在[mysqld]中添加：

datadir = /usr/local/mysql/data         #添加

log-error = /usr/local/mysql/data/error.log  #添加

#pid-file = /usr/local/mysql/data/mysql.pid   #注釋掉

tmpdir = /var/tmp #不建議放在/tmp下

我先說一下我安裝mysql的操作吧：

1、開始的時候，安裝mysql，是那種解壓縮就能用的軟件包。我把它解壓后，拷貝到/usr/local/ 目錄下，並把名字命名為mysql。

2、建立用戶mysql。[root@localhost ~]# useradd mysql

3、修改權限。[root@localhost ~]# chown -R mysql:mysql /usr/local/mysql

4、初始化mysql。進入/usr/local/mysql目錄下的/usr/local/mysql/scripts/目錄，有個mysql_install_db可執行文件。運行/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data &(這點非常重要)

不運行紅色字體的，可能會出現錯誤：

FATAL ERROR: Could not find ./bin/my_print_defaults

If you compiled from source, you need to run 'make install' to

copy the software into the correct location ready for operation.

If you are using a binary release, you must either be at the top

level of the extracted archive, or pass the --basedir option

pointing to that location.

5、啟動mysql服務。運行[root@localhost ~]# /usr/local/mysql/bin/mysqld_safe

120223 21:42:59 mysqld_safe Logging to '/usr/local/mysql/data/localhost.localdomain.err'. 
chown: “/usr/local/mysql/data/localhost.localdomain.err” 后缺少操作數 
請嘗試執行“chown --help”來獲取更多信息。 
120223 21:42:59 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data

出現類似的提示說明啟動成功

主意：可能會出現這個錯誤

mysqldump: error while loading shared libraries: libmysqlclient.so.16: cannot open shared object file: No such file or directory

解決方案就是：

1、先查找libmysqlclient.so.16文件存在否。

[root@localhost ~]# find \ –name libmysqlclient.so.16

2、若存在。建立軟連接。

ln -s /usr/local/mysql/lib/libmysqlclient.so.16 /usr/lib/ 主意：若系統是64bit的，則是：

ln -s /usr/local/mysql/lib/libmysqlclient.so.16 /usr/lib64/

 

其實說了這么多還沒有說到我需要說的問題。

不知怎么的，我安裝的mysql在/etc/下沒有my.cnf文件。

由於測試需要，故拷貝了一個my.cnf文件。然后再啟動，報這個問題。

[root@localhost ~]# /usr/local/mysql/bin/mysqld_safe 
120223 21:29:59 mysqld_safe Logging to '/usr/local/mysql/data/localhost.localdomain.err'. 
chown: “/usr/local/mysql/data/localhost.localdomain.err” 后缺少操作數 
請嘗試執行“chown --help”來獲取更多信息。 
120223 21:29:59 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data 
120223 21:29:59 mysqld_safe mysqld from pid file /usr/local/mysql/data/localhost.localdomain.pid ended

 

 

 

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