MYSQL简单安装配置

有用的URL：

http://www.cnblogs.com/zeroone/articles/2298942.html

http://blog.csdn.net/h1017597898/article/details/9815987

安装之后，新建用户及密码，新建数据库，分配权限

mysql> CREATE USER 'user'@'%' IDENTIFIED BY 'password';
Query OK,  rows affected (0.00 sec)

mysql> create database DB;
Query OK,  row affected (0.00 sec)

mysql>create database DB default character set utf8 collate utf8_general_ci; (为了DJANGO操作中文不乱码) 

Query OK, 1 row affected (0.00 sec)

 rows affected ( rows affected (0.00 sec)

YUM安装的MYSQL之后，第一次启动时的安全配置：

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h cnsz141539 password 'new-password'

Alternatively you can run:
/usr/bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:
cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl
cd /usr/mysql-test ; perl mysql-test-run.pl

Please report any problems with the /usr/bin/mysqlbug script!

如果要将MYSQL放入SERVICE服务，相应的脚本为：

#!/bin/sh
#
# mysqld    This shell script takes care of starting and stopping
#        the MySQL subsystem (mysqld).
#
# chkconfig: -
# description:    MySQL database server.
# processname: mysqld
# config: /etc/my.cnf
# pidfile: /var/run/mysqld/mysqld.pid
### BEGIN INIT INFO
# Provides: mysqld
# Required-Start: $local_fs $remote_fs $network $named $syslog $time
# Required-Stop: $local_fs $remote_fs $network $named $syslog $time
# Short-Description: start and stop MySQL server
# Description: MySQL database server
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

exec="/usr/bin/mysqld_safe"
prog="mysqld"

# Set timeouts here so they can be overridden from /etc/sysconfig/mysqld
STARTTIMEOUT=
STOPTIMEOUT=

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

lockfile=/var/lock/subsys/$prog

# extract value of a MySQL option from config files
# Usage: get_mysql_option SECTION VARNAME DEFAULT
# result is returned in $result
# We use my_print_defaults which prints all options from multiple files,
# with the more specific ones later; hence take the last match.
get_mysql_option(){
    result=`/usr/bin/my_print_defaults `
    if [ -z "$result" ]; then
        # not found, use default
        result="$3"
    fi
}

get_mysql_option mysqld datadir "/var/lib/mysql"
datadir="$result"
get_mysql_option mysqld socket "$datadir/mysql.sock"
socketfile="$result"
get_mysql_option mysqld_safe log-error "/var/log/mysqld.log"
errlogfile="$result"
get_mysql_option mysqld_safe pid-file "/var/run/mysqld/mysqld.pid"
mypidfile="$result"

start(){
    [ -x $exec ] || exit
    # check to see if it's already running
    MYSQLDRUNNING=
    if [ -f "$mypidfile" ]; then
    MYSQLPID=`>/dev/null`
    if [ -n "$MYSQLPID" ] && [ -d "/proc/$MYSQLPID" ] ; then
        MYSQLDRUNNING=
    fi
    fi
    RESPONSE=`/usr/bin/mysqladmin --socket=>&`
     ] && [ $? =  ]; then
    # already running, do nothing
    action $"Starting $prog: " /bin/true
    ret=
     ] && echo "$RESPONSE" | grep -q "Access denied for user"
    then
    # already running, do nothing
    action $"Starting $prog: " /bin/true
    ret=
    else
        # prepare for start
    >/dev/null
     ]; then
         # failed to touch log file, probably insufficient permissions
        action $"Starting $prog: " /bin/false
        return
    fi
    chown mysql:mysql "$errlogfile"
     "$errlogfile"
    [ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
    if [ ! -d "$datadir/mysql" ] ; then
        # First, make sure $datadir is there with correct permissions
        if [ ! -e "$datadir" -a ! -h "$datadir" ]
        then

        fi
        chown mysql:mysql "$datadir"
         "$datadir"
        [ -x /sbin/restorecon ] && /sbin/restorecon "$datadir"
        # Now create the database
        action $"Initializing MySQL database: " /usr/bin/mysql_install_db --datadir="$datadir" --user=mysql
        ret=$?
        chown -R mysql:mysql "$datadir"
         ] ; then
        return $ret
        fi
    fi
    chown mysql:mysql "$datadir"
     "$datadir"
    # We check if there is already a process using the socket file,
    # since otherwise this init script could report false positive
    # result and mysqld_safe would remove the socket file, which
    # actually uses a different daemon.
    if fuser "$socketfile" &>/dev/null ; then
        echo "Socket file $socketfile exists. Is another MySQL daemon already running with the same unix socket?"
        action $"Starting $prog: " /bin/false
        return
    fi
    # Pass all the options determined above, to ensure consistent behavior.
    # In many cases mysqld_safe would arrive at the same conclusions anyway
    # but we need to be sure.  (An exception is that we don't force the
    # log-error setting, since this script doesn't really depend on that,
    # and some users might prefer to configure logging to syslog.)
    # Note: set --basedir to prevent probes that might trigger SELinux
    # alarms, per bug #
    $exec   --datadir="$datadir" --socket="$socketfile" \
        --pid-file="$mypidfile" \
        --basedir=/usr --user=mysql >/dev/>& &
    safe_pid=$!
    # Spin for a maximum of N seconds waiting for the server to come up;
    # exit the loop immediately if mysqld_safe process disappears.
    # Rather than assuming we know a valid username, accept an "access
    # denied" response as meaning the server is functioning.
    ret=
    TIMEOUT="$STARTTIMEOUT"
     ]; do
        RESPONSE=`/usr/bin/mysqladmin --socket=>&`
        mret=$?
         ]; then
        break
        fi
        # exit codes ,  (EXIT_CANNOT_CONNECT_TO_SERVICE) are expected,
        # anything else suggests a configuration error
         -a $mret -ne  ]; then
        echo "$RESPONSE"
        echo "Cannot check for MySQL Daemon startup because of mysqladmin failure."
        ret=
        break
        fi
        echo "$RESPONSE" | grep -q "Access denied for user" && break
         $safe_pid >/dev/null; then
        echo "MySQL Daemon failed to start."
        ret=
        break
        fi

        let TIMEOUT=${TIMEOUT}-
    done
     ]; then
        echo "Timeout error occurred trying to start MySQL Daemon."
        ret=
    fi
     ]; then
        action $"Starting $prog: " /bin/true
        >&
        touch $lockfile
    else
        action $"Starting $prog: " /bin/false
    fi
    fi
    return $ret
}

stop(){
    if [ ! -f "$mypidfile" ]; then
        # not running; per LSB standards this is "ok"
        action $"Stopping $prog: " /bin/true
        return
    fi
    MYSQLPID=`>/dev/null`
    if [ -n "$MYSQLPID" ]; then
        /bin/>&
        ret=$?
         ]; then
        TIMEOUT="$STOPTIMEOUT"
         ]; do
            /bin/ >& || break

            let TIMEOUT=${TIMEOUT}-
        done
         ]; then
            echo "Timeout error occurred trying to stop MySQL Daemon."
            ret=
            action $"Stopping $prog: " /bin/false
        else
            rm -f $lockfile
            rm -f "$socketfile"
            action $"Stopping $prog: " /bin/true
        fi
        else
        action $"Stopping $prog: " /bin/false
        fi
    else
        # failed to read pidfile, probably insufficient permissions
        action $"Stopping $prog: " /bin/false
        ret=
    fi
    return $ret
}

restart(){
    stop
    start
}

condrestart(){
    [ -e $lockfile ] && restart || :
}

# See how we were called.
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
    status -p "$mypidfile" $prog
    ;;
  restart)
    restart
    ;;
  condrestart|try-restart)
    condrestart
    ;;
  reload)
    exit
    ;;
  force-reload)
    restart
    ;;
  *)
    echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
    exit
esac

exit $?