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--- linux:mysql:multiple [2011/12/09 10:51]
linko22@gmail.com создано
+++ linux:mysql:multiple [2011/12/27 16:13] (текущий)
linko22@gmail.com
@@ Строка 4: / Строка 4: @@
 <code cli>
-mkdir /var/lib/mysql2/mysql
+mkdir -p /var/lib/mysql2/mysql
 mkdir /var/lib/mysql2/mysql/data
 mkdir /var/lib/mysql2/mysql/log
@@ Строка 12: / Строка 12: @@
 mysql_install_db --datadir=/var/lib/mysql2/mysql/data --user=mysql
 </code>
+. Создаем новый минимальный конфигурационный файл для нашего нового сервера **/etc/my2.cnf**
+<file bash my2.cnf>
+[mysqld]
+port=3307
+datadir=/var/lib/mysql2/mysql/data
+socket=/var/lib/mysql2/mysql/mysql.sock
+user=mysql
+log-bin = /var/lib/mysql2/mysql/log/mysql-bin.log
+[mysqld_safe]
+log-error=/var/lib/mysql2/mysql/log/mysqld.log
+pid-file=/var/lib/mysql2/run/mysqld.pid
+[isamchk]
+[myisamchk]
+</file>
+. Создаем новый init.d скрипт **/etc/init.d/mysql2**
+<file bash mysql2>
+#!/bin/bash
+#
+# mysqld.server2 This shell script takes care of starting and stopping
+#               the MySQL subsystem (mysqld).
+#
+# chkconfig: - 64 36
+# description:  MySQL database server 2nd instance.
+# processname: mysqld
+# config: /etc/my2.cnf
+# pidfile: /var/lib/mysql2/mysql/run/mysqld.pid
+# Source function library.
+. /etc/rc.d/init.d/functions
+# Source networking configuration.
+. /etc/sysconfig/network
+prog="MySQL"
+# 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 "$1" | sed -n "s/^--$2=//p" | tail -n 1`
+        if [ -z "$result" ]; then
+            # not found, use default
+            result="$3"
+        fi
+}
+get_mysql_option mysqld datadir "/var/lib/mysql2/mysql/data"
+datadir="/var/lib/mysql2/mysql/data"
+get_mysql_option mysqld socket "$datadir/mysql.sock"
+socketfile="$datadir/mysql.sock"
+get_mysql_option mysqld_safe log-error "/var/lib/mysql2/mysql/log/mysqld.log"
+errlogfile="/var/lib/mysql2/mysql/log/mysqld.log"
+get_mysql_option mysqld_safe pid-file "/var/lib/mysql2/mysql/run/mysqld.pid"
+mypidfile="/var/lib/mysql2/mysql/run/mysqld.pid"
+start(){
+        touch "$errlogfile"
+        chown mysql:mysql "$errlogfile"
+        chmod 0640 "$errlogfile"
+        [ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
+        if [ ! -d "$datadir/mysql" ] ; then
+            action $"Initializing MySQL database: " /usr/bin/mysql_install_db
+            ret=$?
+            chown -R mysql:mysql "$datadir"
+            if [ $ret -ne 0 ] ; then
+                return $ret
+            fi
+        fi
+        chown mysql:mysql "$datadir"
+        chmod 0755 "$datadir"
+        # Pass all the options determined above, to ensure consistent behavior.
+        # In many cases mysqld_safe would arrive at the same conclusions anyway
+        # but we need to be sure.
+        /usr/bin/mysqld_safe --defaults-file=/etc/my2.cnf --datadir="$datadir" --socket="$socketfile" \
+                --log-error="$errlogfile" --pid-file="$mypidfile" \
+                >/dev/null 2>&1 &
+        ret=$?
+        # Spin for a maximum of N seconds waiting for the server to come up.
+        # Rather than assuming we know a valid username, accept an "access
+        # denied" response as meaning the server is functioning.
+        if [ $ret -eq 0 ]; then
+            STARTTIMEOUT=30
+            while [ $STARTTIMEOUT -gt 0 ]; do
+                RESPONSE=`/usr/bin/mysqladmin -uUNKNOWN_MYSQL_USER ping 2>&1` && break
+                echo "$RESPONSE" | grep -q "Access denied for user" && break
+                sleep 1
+                let STARTTIMEOUT=${STARTTIMEOUT}-1
+            done
+            if [ $STARTTIMEOUT -eq 0 ]; then
+                    echo "Timeout error occurred trying to start MySQL Daemon."
+                    action $"Starting $prog: " /bin/false
+                    ret=1
+            else
+                    action $"Starting $prog: " /bin/true
+            fi
+        else
+            action $"Starting $prog: " /bin/false
+        fi
+        [ $ret -eq 0 ] && touch /var/lib/mysql2/mysql/lock/mysqld
+        return $ret
+}
+stop(){
+        MYSQLPID=`cat "$mypidfile"  2>/dev/null `
+        if [ -n "$MYSQLPID" ]; then
+            /bin/kill "$MYSQLPID" >/dev/null 2>&1
+            ret=$?
+            if [ $ret -eq 0 ]; then
+                STOPTIMEOUT=60
+                while [ $STOPTIMEOUT -gt 0 ]; do
+                    /bin/kill -0 "$MYSQLPID" >/dev/null 2>&1 || break
+                    sleep 1
+                    let STOPTIMEOUT=${STOPTIMEOUT}-1
+                done
+                if [ $STOPTIMEOUT -eq 0 ]; then
+                    echo "Timeout error occurred trying to stop MySQL Daemon."
+                    ret=1
+                    action $"Stopping $prog: " /bin/false
+                else
+                    rm -f /var/lib/mysql2/mysql/lock/mysqld
+                    rm -f "$socketfile"
+                    action $"Stopping $prog: " /bin/true
+                fi
+            else
+                action $"Stopping $prog: " /bin/false
+            fi
+        else
+            ret=1
+            action $"Stopping $prog: " /bin/false
+        fi
+        return $ret
+}
+restart(){
+    stop
+    start
+}
+condrestart(){
+    [ -e /var/lib/mysql2/mysql/lock/mysqld ] && restart || :
+}
+# See how we were called.
+case "$1" in
+  start)
+    start
+    ;;
+  stop)
+    stop
+    ;;
+  status)
+    status mysqld
+    ;;
+  restart)
+    restart
+    ;;
+  condrestart)
+    condrestart
+    ;;
+  *)
+    echo $"Usage: $0 {start|stop|status|condrestart|restart}"
+    exit 1
+esac
+exit $?
+</file>
+. Включаем автозапуск и стартуем
+<code cli>
+chmod +x /etc/init.d/mysqld2
+chkconfig mysqld2 on
+service mysqld2 start
+</code>
+. Меняем пароль
+<code cli>
+mysqladmin -P 3307 --protocol=tcp -u root password 'NEWPASSWORD'
+</code>
+. Подключаемся и смотрим
+<code cli>
+# mysql -P 3307 --protocol=tcp -uroot -p
+Enter password:
+Welcome to the MySQL monitor.  Commands end with ; or \g.
+Your MySQL connection id is 11
+Server version: 5.5.19-log Source distribution
+Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
+mysql> show databases;
++--------------------+
+| Database           |
++--------------------+
+| information_schema |
+| mysql              |
+| test               |
++--------------------+
+rows in set (0.00 sec)
+mysql>
+</code>
+. Проверяеем запущеные демоны
+<code cli>
+# ps -ax | grep mysql
+Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
+pts/1    S+     0:00 grep --color=auto mysql
+?        S      0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --socket=/var/lib/mysql/mysql.sock --pid-file=/var/run/mysqld/mysqld.pid --basedir=/usr --user=mysql --open-files-limit=65535
+?        Sl   5422:02 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysqld.log --open-files-limit=65535 --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
+?        S      0:00 /bin/sh /usr/bin/mysqld_safe --defaults-file=/etc/my2.cnf --datadir=/var/lib/mysql2/mysql/data --socket=/var/lib/mysql2/mysql/data/mysql.sock --log-error=/var/lib/mysql2/mysql/log/mysqld.log --pid-file=/var/lib/mysql2/mysql/run/mysqld.pid
+?        Sl    15:04 /usr/libexec/mysqld --defaults-file=/etc/my2.cnf --basedir=/usr --datadir=/var/lib/mysql2/mysql/data --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql2/mysql/log/mysqld.log --pid-file=/var/lib/mysql2/mysql/run/mysqld.pid --socket=/var/lib/mysql2/mysql/data/mysql.sock --port=3307
+</code>
+. По мотивам статьи [[http://unixmen.com/linux-tutorials/1863--multiple-mysql-instance-on-fedoracentosredhatscientific-linux]]

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