MysqL多实例安装
注意：提前下载保存MysqL-5.5.57的软件包与cmake编译MysqL的工具
ll /home/rich/tools
MysqL-5.5.57.tar.gz cmake-2.8.8.tar.gz

1.安装依赖环境与cmake编译软件
yum install -y ncurses-devel libaio-devel
mkdir /home/rich/tools -p
rz -y cmake-2.8.8.tar.gz MysqL-5.5.57.tar.gz
tar xf cmake-2.8.8.tar.gz
cd cmake-2.8.8
./configure
gmake
gmake install

2.添加管理MysqL的用户，并进入软件包目录解压MysqL软件包
useradd MysqL -s /sbin/nologin -M
cd /home/rich/tools
tar zxf MysqL-5.5.57.tar.gz
cd MysqL-5.5.57

3.用cmake编译MysqL
cmake . -DCMAKE_INSTALL_PREFIX=/application/MysqL-5.5.57 \
-DMysqL_DATADIR=/application/MysqL-5.5.57/data \
-DMysqL_UNIX_ADDR=/application/MysqL-5.5.57/tmp/MysqL.sock \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DEXTRA_CHARSETS=gbk,gb2312,utf8,ascii \
-DENABLED_LOCAL_INFILE=ON \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \
-DWITHOUT_PARTITION_STORAGE_ENGINE=1 \
-DWITH_FAST_MUTEXES=1 \
-DWITH_ZLIB=bundled \
-DENABLED_LOCAL_INFILE=1 \
-DWITH_READLINE=1 \
-DWITH_EMBEDDED_SERVER=1 \
-DWITH_DEBUG=0

make && make install

4.创建安装完成后的目录的软链接
ln -s /application/MysqL-5.5.57/ /application/MysqL/

5.创建多实例的目录3306与3307，用端口号命名
mkdir -p /data/{3306,3307}/data
cd /data/3306

6.进入3306这个实例的目录下编辑实例的启动配置文件my.cnf，3307实例的配置文件只把其中的 3306改成3307即可，注意server id 不能相同
vi my.cnf
##################################################
[client]
port = 3306
socket = /data/3306/MysqL.sock

[MysqL]
no-auto-rehash

[MysqLd]
user = MysqL
port = 3306
socket = /data/3306/MysqL.sock
basedir = /application/MysqL
datadir = /data/3306/data
open_files_limit = 1024
back_log = 600
max_connections = 800
max_connect_errors = 3000
table_cache = 614
external-locking = FALSE
max_allowed_packet =8M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 100
thread_concurrency = 2
query_cache_size = 2M
query_cache_limit = 1M
query_cache_min_res_unit = 2k
thread_stack = 192K
tmp_table_size = 2M
max_heap_table_size = 2M
long_query_time = 1

pid-file = /data/3306/MysqL.pid
log-bin = /data/3306/MysqL-bin
relay-log = /data/3306/relay-bin
relay-log-info-file = /data/3306/relay-log.info
binlog_cache_size = 1M
max_binlog_cache_size = 1M
max_binlog_size = 2M
expire_logs_days = 7
key_buffer_size = 16M
read_buffer_size = 1M
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 1M

lower_case_table_names = 1
skip-name-resolve
slave-skip-errors = 1032,1062
replicate-ignore-db=MysqL

server-id = 1 //id不能与其实的实例相同

innodb_additional_mem_pool_size = 4M
innodb_buffer_pool_size = 32M
innodb_data_file_path = ibdata1:128M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 4M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table = 0

[MysqLdump]
quick
max_allowed_packet = 2M

[MysqLd_safe]
log-error=/data/3306/MysqL_rich3306.err
pid-file=/data/3306/MysqLd.pid

##############################################################

7.编写多实例的启动脚本MysqL，实例3307的启动脚本只要修改3306为3307即可
vi MysqL
##################################################
#!/bin/sh
#init
port=3306
MysqL_user="root"
MysqL_pwd="123456"
CmdPath="/application/MysqL/bin"
MysqL_sock="/data/${port}/MysqL.sock"

function_start_MysqL()
{
if [ ! -e "$MysqL_sock" ];then
printf "Starting MysqL...\n"
/bin/sh ${CmdPath}/MysqLd_safe --defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &
else
printf "MysqL is running...\n"
exit
fi
}

function_stop_MysqL()
{
if [ ! -e "$MysqL_sock" ];then
printf "MysqL is stopped...\n"
exit
else
printf "Stoping MysqL...\n"
${CmdPath}/MysqLadmin -u ${MysqL_user} -p${MysqL_pwd} -S /data/${port}/MysqL.sock shutdown
fi
}

function_restart_MysqL()
{
printf "Restarting MysqL...\n"
function_stop_MysqL
sleep 2
function_start_MysqL
}

case $1 in
start)
function_start_MysqL
;;
stop)
function_stop_MysqL
;;
restart)
function_restart_MysqL
;;
*)
printf "Usage: /data/${port}/MysqL {start|stop|restart}\n"
esac

8.修改多实例的目录data的属主为MysqL，修改启动脚本的权限为700
chown -R MysqL.MysqL /data
find /data -type f -name "MysqL"|xargs chmod 700

9.创建MysqL启动时的系统环境变量
echo 'export PATH=/application/MysqL/bin:$PATH' >>/etc/profile
source /etc/profile

10.安装完毕后开始初始化数据库
cd /application/MysqL/scripts/

./MysqL_install_db --basedir=/application/MysqL/ --datadir=/data/3306/data/ --user=MysqL

./MysqL_install_db --basedir=/application/MysqL/ --datadir=/data/3307/data/ --user=MysqL

11.启动数据库
[root@MysqL scripts]# /data/3306/MysqL start
Starting MysqL...

12.如何有报不存在错误日志的文件错，可手动自己创建
[root@MysqL scripts]# 171128 16:11:58 MysqLd_safe error: log-error set to '/data/3306/MysqL_rich3306.err',however file don't exists. Create writable for user 'MysqL'.
解决：cd /data/3306/
touch MysqL_rich3306.err
cd /data/3307
touch MysqL_rich3307.err
###################################################################

12.在次启动数据库
/data/3307/MysqL start

13.启动后查看服务是否成功
ss -lntup|egrep "3306|3307"

14.命令行启动多实例测试MysqLadmin -uroot password 123456 -S /data/3306/MysqL.sockMysqLadmin -uroot password 123456 -S /data/3307/MysqL.sock