mysql-多實例

1、MySQL 多實例

一、簡介

什麼使多實例呢？

多實例就是在一臺機器上開啓多個不一樣的服務端口（如：3306,3307）；

運行多個MySQL服務進程，這些進程經過不一樣的socket監聽不一樣的服務端口來提供各自的服務。

MySQL多實例共用一個 MySQL 的安裝程序，使用不一樣（也可相同）的 my.cnf 配置文件，啓動程序和數據文件。

在提供服務時，多實例 MySQL 在邏輯上是各自獨立的，多個實例的自己是根據配置文件對應的設定值，來得到服務器的相關硬件資源多少。

二、安裝配置前操做

安裝配置前的一些配置少不了

文件的目錄最好也規矩，這樣才專業

/data/ops/app/mysql-5.6.23/     ###mysql的安裝路徑
mkdir /data/ops/app/mysql-5.6.23/{3306,3307}
vim /data/ops/app/mysql-5.6.23/etc/3306.cnf

[client]
character-set-server = utf8

[mysql]
character-set-server = utf8

[mysqld]
#bind-address=127.0.0.1
character-set-server = utf8
datadir=/data/ops/app/mysql-5.6.23/3306
socket=/data/ops/app/mysql-5.6.23/3306/3306.sock
user=mysql
skip-grant-tables

symbolic-links=0
skip-name-resolve

#init-connect='insert into accesslog.accesslog(id, time, localname, matchname) values(connection_id(), now(), user(),current_user());'

slow_query_log = 1
long_query_time = 4
#slow-query-log-file = /data/ops/app/mysql-5.6.23/logs/3306/3306_slow.log
log-queries-not-using-indexes = false
lower-case-table-names = 1

server-id = 1
max_connections =5000
max_allowed_packet = 16M
connect_timeout = 60
log-slave-updates
log-bin = 3306-bin
expire_logs_days = 7
slave-skip-errors = 1062
#binlog_do_db =
back_log = 200
max_connect_errors = 10
table_open_cache = 10240

binlog_cache_size = 1M
max_heap_table_size = 64M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 8
thread_concurrency = 8
query_cache_size = 512M
query_cache_limit = 2M
ft_min_word_len = 4
thread_stack = 192K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 64M
binlog_format = mixed
log-short-format
key_buffer_size = 512M
read_buffer_size = 16M
read_rnd_buffer_size = 16M
bulk_insert_buffer_size = 64M
innodb_file_per_table
innodb_additional_mem_pool_size = 100M
innodb_buffer_pool_size = 1G
innodb_data_file_path = ibdata1:12M;ibdata2:12M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 256M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
slave-skip-errors = 1062

[mysqld_safe]
log-error=/data/ops/app/mysql-5.6.23/logs/3306/3306.log
pid-file=/data/ops/app/mysql-5.6.23/3306/3306.pid

vim /data/ops/app/mysql-5.6.23/etc/3307.cnf  ### 配置文件

[client]
character-set-server = utf8

[mysql]
character-set-server = utf8

[mysqld]
#bind-address=127.0.0.1 
character-set-server = utf8
datadir=/data/ops/app/mysql-5.6.23/3307
socket=/data/ops/app/mysql-5.6.23/3307/3307.sock
user=mysql
skip-grant-tables

symbolic-links=0
skip-name-resolve

#init-connect='insert into accesslog.accesslog(id, time, localname, matchname) values(connection_id(), now(), user(),current_user());'

slow_query_log = 1
long_query_time = 4
slow-query-log-file = /data/ops/app/mysql-5.6.23/logs/3307/3307_slow.log
log-queries-not-using-indexes = false
lower-case-table-names = 1

server-id = 1
max_connections =5000
max_allowed_packet = 16M
connect_timeout = 60
log-slave-updates
log-bin = 3307-bin
expire_logs_days = 7
slave-skip-errors = 1062
#binlog_do_db =
back_log = 200
max_connect_errors = 10
table_open_cache = 10240

binlog_cache_size = 1M
max_heap_table_size = 64M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 8
thread_concurrency = 8
query_cache_size = 512M
query_cache_limit = 2M
ft_min_word_len = 4
thread_stack = 192K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 64M
binlog_format = mixed
log-short-format
key_buffer_size = 512M
read_buffer_size = 16M
read_rnd_buffer_size = 16M
bulk_insert_buffer_size = 64M
innodb_file_per_table
innodb_additional_mem_pool_size = 100M
innodb_buffer_pool_size = 1G
innodb_data_file_path = ibdata1:12M;ibdata2:12M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 256M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
slave-skip-errors = 1062

[mysqld_safe]
log-error=/data/ops/app/mysql-5.6.23/logs/3307/3307.log
pid-file=/data/ops/app/mysql-5.6.23/3307/3307.pid

###建立初始化腳本以及啓動文件

vim /data/ops/app/mysql-5.6.23/scripts/init/3306.sh

#/bin/bash
# 3306.sh can create a 3306 instance
# create directories
if [ ! -d '/data/ops/app/mysql-5.6.23/3306' ];then
  mkdir -p '/data/ops/app/mysql-5.6.23/3306';
fi
if [ ! -d '/data/ops/app/mysql-5.6.23/logs/3306' ];then
  mkdir -p '/data/ops/app/mysql-5.6.23/logs/3306';
fi

# set env
conf="/data/ops/app/mysql-5.6.23/etc/3306.cnf"
basedir="/data/ops/app/mysql-5.6.23"
datadir="/data/ops/app/mysql-5.6.23/3306"
pid="/data/ops/app/mysql-5.6.23/3306/3306.pid"
sock="/data/ops/app/mysql-5.6.23/3306/3306.sock"
port='3000'
user='mysql'

# create instance
#/data/ops/app/mysql-5.6.23/scripts/mysql_install_db --user=$user --basedir=$basedir --datadir=$datadir

# boot instance
/data/ops/app/mysql-5.6.23/bin/mysqld_safe --defaults-file=$conf --user=$user --basedir=$basedir --datadir=$datadir --port=$port --pid-file=$pid --socket=$sock &

vim /data/ops/app/mysql-5.6.23/scripts/init/3307.sh

#/bin/bash
# 3307.sh can create a 3307 instance
# create directories
if [ ! -d '/data/ops/app/mysql-5.6.23/3307' ];then
  mkdir -p '/data/ops/app/mysql-5.6.23/3307';
fi
if [ ! -d '/data/ops/app/mysql-5.6.23/logs/3307' ];then
  mkdir -p '/data/ops/app/mysql-5.6.23/logs/3307';
fi

# set env
conf="/data/ops/app/mysql-5.6.23/etc/3307.cnf"
basedir="/data/ops/app/mysql-5.6.23"
datadir="/data/ops/app/mysql-5.6.23/3307"
pid="/data/ops/app/mysql-5.6.23/3307/3307.pid"
sock="/data/ops/app/mysql-5.6.23/3307/3307.sock"
port='3002'
user='mysql'

# create instance
#/data/ops/app/mysql-5.6.23/scripts/mysql_install_db --user=$user --basedir=$basedir --datadir=$datadir

# boot instance
/data/ops/app/mysql-5.6.23/bin/mysqld_safe --defaults-file=$conf --user=$user --basedir=$basedir --datadir=$datadir --port=$port --pid-file=$pid --socket=$sock &

#####注意初始化腳本完畢之後mysql才能啓動

su --shell=/bin/bash mysql -c "/data/ops/app/mysql-5.6.23/scripts/init/3306.sh"                               ###啓動腳本 能夠放在/etc/rc.local下 開機自啓

su --shell=/bin/bash mysql -c "/data/ops/app/mysql-5.6.23/scripts/init/3307.sh"

####mysql關閉

killall mysqld  不建議這樣操做

mysqladmin -u mysql -P 3002 -S /data/ops/app/mysql-5.6.23/3307/3307.sock shutdown            ###建議這樣關閉數據庫

 

增長一個mysql實例

問題又來了，要增長一個實例怎麼弄呢？

其實不難，只需按上面步驟，建立目錄，在修改相應配置文件，初始化就ok