在安裝mysql過(guò)程中，由于對(duì)log文件目錄位置進(jìn)行了修改，

在my.cnf 中加入

[mysqld]

port  = 3306

socket  = /tmp/mysql.sock

skip-locking

key_buffer_size = 16M

max_allowed_packet = 1M

table_open_cache = 64

sort_buffer_size = 512K

net_buffer_length = 8K

read_buffer_size = 256K

read_rnd_buffer_size = 512K

myisam_sort_buffer_size = 8M

新增log-error = /var/log/mysql/mysql_error.log

新增log-bin = /var/log/mysql/binlog

導(dǎo)致MYSQL無(wú)法正常啟動(dòng)

查看LOG后發(fā)現(xiàn)

Can't start server : Bind on unix socket: Permission denied

應(yīng)該是一個(gè)權(quán)限問(wèn)題，仔細(xì)檢查發(fā)現(xiàn) 新制定的log 文件權(quán)限不對(duì)

使用chown進(jìn)行修改 之后還是同樣錯(cuò)誤

Do you already have another mysqld server running on socket: /tmp/mysql.sock ?

chmod 777 /tmp 就可以了

如果好不行的話，建議把整個(gè)mysql安裝目錄都改為 mysql:mysql下

chown -R mysql:mysql /usr/local/mysql

應(yīng)該就不會(huì)有權(quán)限方面的問(wèn)題了