MySQL编译安装笔记大前提，你的Linux系统要搭建好GCC的编译环境。使用CentOS的话可以：yum -y install gccyum -y install gcc-c+

MySQL编译安装笔记
大前提，你的Linux系统要搭建好GCC的编译环境。
使用CentOS的话可以：
yum -y install gcc
yum -y install gcc-c++
添加MySQL用户组和用户
grounadd mysql
useradd -g mysql mysql
MySQL编译安装依赖的软件包：
cd /tmp
wget
tar -zvxf ncurses-5.7.tar.gz
cd ncurses-5.7
./configure --prefix=/usr --with-shared --without-debug
make
make install

修改MySQL最大连接数，解开MySQL的原代码，进入里面的sql目录修改mysqld.cc找到下面一行：
{"max_connections", OPT_MAX_CONNECTIONS,
"The number of simultaneous clients allowed.", (gptr*) &max_connections,(gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 151, 1, 16384, 0, 1,0},
把它改为：
{"max_connections", OPT_MAX_CONNECTIONS,"The number of simultaneous clients allowed.", (gptr*) &max_connections,(gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 1500, 1, 16384, 0, 1,0},
编译安装MySQL：
cd /tmp
wget
tar -zvxf mysql-5.5.2-m2.tar.gz
cd mysql-5.5.2-m2
CFLAGS="-O3" CXX=gcc CXXFLAGS="-O3 -felide-constructors -fno-exceptions -fno-rtti -fomit-frame-pointer -ffixed-ebp"
./configure --prefix=/usr/local/mysql --enable-assembler --with-charset=utf8 --with-collation=utf8_general_ci --with-extra-charsets=all --enable-thread-safe-client --with-big-tables --with-readline --with-ssl --with-embedded-server --enable-local-infile --with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static --with-plugins=partition,innobase,myisammrg
make
make install
在CentOS上安装mysql时，可能会停顿一段时间（mysql-test），多等等就过去了
安装完成后，修改目录权限：
chmod +w /usr/local/mysql
chown -R mysql:mysql /usr/local/mysql
建立一些必要的目录：
mkdir -p /usr/local/mysql/data
mkdir -p /usr/local/mysql/binlog
mkdir -p /usr/local/mysql/relaylog
chown -R mysql:mysql /usr/local/mysql
使用mysql用户帐号的身份建立数据表（也可以说初始化mysql的数据库）：
/usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql
创建MySQL的配置文件，，配置文件名通常为my.cnf：
vi /usr/local/mysql/my.cnf
输入以下内容并保存：
[client]
character-set-server = utf8
port = 3306
socket = /tmp/mysql.sock
[mysqld]
character-set-server = utf8
replicate-ignore-db = mysql
replicate-ignore-db = test
replicate-ignore-db = information_schema
user = mysql
port = 3306
socket = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
log-error = /usr/local/mysql/mysql_error.log
pid-file = /usr/local/mysql/mysql.pid
open_files_limit = 10240
back_log = 600
max_connections = 5000
max_connect_errors = 6000
table_cache = 614
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 300
thread_concurrency = 8
query_cache_size = 512M
query_cache_limit = 2M
query_cache_min_res_unit = 2k
default-storage-engine = MyISAM
thread_stack = 192K
transaction_isolation = READ-COMMITTED
tmp_table_size = 246M
max_heap_table_size = 246M
long_query_time = 3
log-slave-updates
log-bin = /usr/local/mysql/binlog/binlog
binlog_cache_size = 4M
binlog_format = MIXED
max_binlog_cache_size = 8M
max_binlog_size = 1G
relay-log-index = /usr/local/mysql/relaylog/relaylog
relay-log-info-file = /usr/local/mysql/relaylog/relaylog
relay-log = /usr/local/mysql/relaylog/relaylog
expire_logs_days = 30
key_buffer_size = 256M
read_buffer_size = 1M
read_rnd_buffer_size = 16M
bulk_insert_buffer_size = M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
myisam_recover
interactive_timeout = 120
wait_timeout = 120
skip-name-resolve
master-connect-retry = 10
slave-skip-errors = 1032,1062,126,1114,1146,1048,1396
#master-host = 192.168.1.2
#master-user = username
#master-password = password
#master-port = 3306
server-id = 1
innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 512M
innodb_data_file_path = ibdata1:256M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 16M
innodb_log_file_size = 128M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table = 0
#log-slow-queries = /usr/local/mysql/slow.log
#long_query_time = 10
[mysqldump]
quick
max_allowed_packet = 32M

创建管理MySQL数据库的shell脚本：
vi /usr/local/mysql/mysql
输入以下内容并保存（这里的用户名root和密码123456接下来的步骤会创建）：
#!/bin/sh
mysql_port=3306
mysql_username="root"
mysql_password="123456"
function_start_mysql()
{
printf "Starting MySQL...\n"
/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/my.cnf 2>&1 > /dev/null &
}
function_stop_mysql()
{
printf "Stoping MySQL...\n"
/usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /tmp/mysql.sock shutdown
}
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
sleep 5
function_start_mysql
}
function_kill_mysql()
{
kill -9 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
kill -9 $(ps -ef | grep 'libexec/mysqld' | grep ${mysql_port} | awk '{printf $2}')
}
if [ "$1" = "start" ]; then
function_start_mysql
elif [ "$1" = "stop" ]; then
function_stop_mysql
elif [ "$1" = "restart" ]; then
function_restart_mysql
elif [ "$1" = "kill" ]; then
function_kill_mysql
else
printf "Usage: /usr/local/mysql/mysql {start|stop|restart|kill}\n"
fi
赋予MySQL数据库的shell脚本可执行权限：
chmod +x /usr/local/mysql/mysql
启动MySQL：
/usr/local/mysql/mysql start
通过命令行登录管理MySQL服务器（提示输入密码时直接回车）：
/usr/local/mysql/bin/mysql -u root -p -S /tmp/mysql.sock
输入以下SQL语句，创建一个具有root权限的用户（root）和密码（123456）：
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '123456';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'127.0.0.1' IDENTIFIED BY '123456';
停止MySQL命令：
/usr/local/mysql/mysql stop