centos6.10中部署percona-mysql雙實例的方法

centos6.10中部署percona-mysql雙實例的方法

數據庫的同步關係：192.168.11.53(master) --> slave(192.168.10.189) --> task slave:3307(192.168.11.53)

1.新增配置文件
2.使用新的配置文件初始化數據庫
3.啓動數據庫
4.升級root密碼並新增task系統的用戶


背景：cms內容管理系統和task任務發佈系統(即把html/css/js/圖片等內容發佈到海外的系統)在同一臺服務器中

使用相同的mysql數據庫實例，不一樣數據庫

觀察發現系統作了大量的關於task系統的查詢，耗費了數據庫性能

爲了不task和cmsx不相互影響，啓用新的mysql實例，將數據庫剝離開

不一樣的應用使用不一樣的數據庫實例


即在cms服務器中同時啓動監聽 3306 和 3307 的mysql數據庫


1、啓動新的3307示例，並把task做爲192.168.10.189的slave

1.將目標數據庫task從 192.168.10.189 從庫中備份出來，並記錄position做爲新實例同步依據
mysqldump -uroot -p -S /tmp/mysql.sock -B -F -R --skip-add-locks --single-transaction --triggers --routines --events --skip-tz-utc task > /opt/task_$(date +%F).sql

# 記錄下主庫的position
mysql> show master status;
+------------------+-----------+--------------+------------------+-------------------+
| File             | Position  | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+-----------+--------------+------------------+-------------------+
| mysql-bin.000532 | 100722038 |              |                  |                   |
+------------------+-----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

2.啓動新的實例，並導入task數據庫
新增數據庫配置(啓動3307端口使用的配置)
注意：須要將不一樣步的數據庫排除：
replicate-ignore-db                                         = mysql
replicate_wild_ignore_table                                = mysql.%

[root@newcms:/usr/local/mysql-sniffer]# cat /etc/my_3307.cnf
# Example MySQL config file for medium systems.
# 8核 16G
# This is for a system with little memory (16G) where MySQL plays
[client]
#password       = your_password
port                                                        = 3307
socket                                                      = /tmp/mysql3307.sock

# The MySQL server
[mysqld]
user                                                        = mysql
port                                                        = 3307
bind-address                                                = 0.0.0.0
socket                                                      = /tmp/mysql3307.sock
datadir                                                     = /data/mysql_data_3307
pid-file                                                    = /data/mysql_data_3307/mysql.pid
basedir                                                     = /usr/local/mysql3307
tmpdir                                                      = /tmp

#此開關默認爲NULL，即不容許導入導出。
#secure-file-priv                                           = /opt/upload

#-------------------------------gobal variables------------------------#
#默認關閉，涉及到timestamp類型的列自動更新的問題
explicit_defaults_for_timestamp                 = 1
###transaction_write_set_extraction              = XXHASH64  #以便在server收集寫集合的同時將其記錄到二進制日誌。而且是行更改後的惟一標識此標識將用於檢測衝突。
###loose-group_replication_group_name            = 'ce9be252-2b71-11e6-b8f4-00212889f856' #組的名字能夠隨便起,但不能用主機的GTID
###loose-group_replication_start_on_boot         = off  #爲了不每次啓動自動引導具備相同名稱的第二個組,因此設置爲OFF。
###loose-group_replication_bootstrap_group       = off #同上
###loose-group_replication_local_address         = '192.168.1.88:33071' #寫本身主機所在IP
###loose-group_replication_group_seeds           ='192.168.1.88:33071,192.168.1.89:33071,192.168.1.90:33071'
###loose-group_replication_single_primary_mode   = off  #關閉單主模式的參數
###loose-group_replication_enforce_update_everywhere_checks = on #開啓多主模式的參數

skip-external-locking
skip-name-resolve
skip-ssl

#memory is 16G
key_buffer_size                                             = 32M
table_open_cache                                            = 2048
table_definition_cache                                      = 1024
sort_buffer_size                                            = 4M
net_buffer_length                                           = 32K
read_buffer_size                                            = 4M
read_rnd_buffer_size                                        = 16M

open_files_limit                                            = 10000
thread_cache_size                                           = 400
query_cache_type                                            = 0
query_cache_size                                            = 32M
max_write_lock_count                                        = 300
wait_timeout                                                = 120
interactive_timeout                                         = 120
net_read_timeout                                            = 120
net_write_timeout                                           = 120

max_connections                                             = 800
max_user_connections                                        = 750
max_connect_errors                                          = 10000
max_allowed_packet                                          = 512M
back_log                                                    = 2048
log_timestamps                                              = system
performance_schema                                          = OFF
character_set_server                                        = utf8mb4

##當連接數耗盡後，經過設置別用端口，讓root能夠登陸
extra_max_connections                                       = 2
extra_port                                                  = 13307

###讓mysql不區分大小寫敏感
lower_case_table_names                                      = 1

#explicit_defaults_for_timestamp                            = 1

#----------------Myisam--------------------------------#
myisam_recover_options                                      = DEFAULT
bulk_insert_buffer_size                                     = 64M
myisam_sort_buffer_size                                     = 128M
myisam_max_sort_file_size                                   = 512M
myisam_repair_threads                                       = 1

#if the query is exec time great than 2 seconds, the query will log to slow log if slowlog is enabled.
long_query_time                                             = 1
slow_query_log                                              = On
slow-query-log-file                                         = /data/mysql_data_3307/slow.log
show_compatibility_56                                       = on

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking

#----------------------------MySQL Log----------------#
# Replication Master Server (default)
# binary logging is required for replication
log-bin                                                     = mysql-bin
expire_logs_days                                            = 20
log_error                                                   = error.log
log_error_verbosity                                         = 1
log_warnings                                                = 1

# binary logging format - mixed recommended
binlog_format                                               = row
relay-log                                                   = mysql-relay-bin
relay-log-index                                             = relay.index
# required unique id between 1 and 2^32 - 1
server-id                                                   = 1
sql-mode                                                    = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
#sql-mode                                                    = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
sync_binlog                                                 = 1
log_slave_updates                                           = 1
#binlog_checksum                                            = NONE

#------------------------------replicate--------------#
#排除不須要同步的庫表
replicate-ignore-db                                        = mysql
replicate-ignore-db                                        = sys
replicate-ignore-db                                         = information_schema
replicate-ignore-db                                         = performance_schema
replicate-ignore-db                                         = undolog
replicate-ignore-db                                         = for_nagios
replicate-ignore-db                                         = undolog
replicate-ignore-db                                         = akamai_task
replicate-ignore-db                                         = bugfree
replicate-ignore-db                                         = cart_jp
replicate-ignore-db                                         = cms123
replicate-ignore-db                                         = cms_com_br
replicate-ignore-db                                         = cms_com_mx
replicate-ignore-db                                         = cms_de
replicate-ignore-db                                         = cms_de_new
replicate-ignore-db                                         = cms_es
replicate-ignore-db                                         = cms_fr
replicate-ignore-db                                         = cms_freecms
replicate-ignore-db                                         = cms_global
replicate-ignore-db                                         = cms_it
replicate-ignore-db                                         = cms_traffic
replicate-ignore-db                                         = cmscouponcode
replicate-ignore-db                                         = cmsnet
replicate-ignore-db                                         = cmsphoto
replicate-ignore-db                                         = cmstask
replicate-ignore-db                                         = ftp_db
replicate-ignore-db                                         = pt_monitor
replicate-ignore-db                                         = task_bak
replicate-ignore-db                                         = test
replicate-ignore-db                                         = ws_amvdb
replicate-ignore-db                                         = ws_dm_device
replicate-ignore-db                                         = ws_fantashow30
replicate-ignore-db                                         = wsjp_cart

replicate_wild_ignore_table                                = mysql.%
replicate_wild_ignore_table                                = sys.%
replicate_wild_ignore_table                                 = information_schema.%
replicate_wild_ignore_table                                 = performance_schema.%
replicate_wild_ignore_table                                 = undolog.%
replicate_wild_ignore_table                                 = for_nagios.%
replicate_wild_ignore_table                                 = undolog.%
replicate_wild_ignore_table                                 = akamai_task.%
replicate_wild_ignore_table                                 = bugfree.%
replicate_wild_ignore_table                                 = cart_jp.%
replicate_wild_ignore_table                                 = cms123.%
replicate_wild_ignore_table                                 = cms_com_br.%
replicate_wild_ignore_table                                 = cms_com_mx.%
replicate_wild_ignore_table                                 = cms_de.%
replicate_wild_ignore_table                                 = cms_de_new.%
replicate_wild_ignore_table                                 = cms_es.%
replicate_wild_ignore_table                                 = cms_fr.%
replicate_wild_ignore_table                                 = cms_freecms.%
replicate_wild_ignore_table                                 = cms_global.%
replicate_wild_ignore_table                                 = cms_it.%
replicate_wild_ignore_table                                 = cms_traffic.%
replicate_wild_ignore_table                                 = cmscouponcode.%
replicate_wild_ignore_table                                 = cmsnet.%
replicate_wild_ignore_table                                 = cmsphoto.%
replicate_wild_ignore_table                                 = cmstask.%
replicate_wild_ignore_table                                 = ftp_db.%
replicate_wild_ignore_table                                 = pt_monitor.%
replicate_wild_ignore_table                                 = task_bak.%
replicate_wild_ignore_table                                 = test.%
replicate_wild_ignore_table                                 = ws_amvdb.%
replicate_wild_ignore_table                                 = ws_dm_device.%
replicate_wild_ignore_table                                 = ws_fantashow30.%
replicate_wild_ignore_table                                 = wsjp_cart.%

#主主複製須要開啓
#auto_increment_offset= 2
#auto_increment_increment= 2

#GTID模式複製，須要開啓以下
#gtid_mode                                                  = ON
#enforce_gtid_consistency                                   = ON

#併發複製
slave-parallel-type                                         = LOGICAL_CLOCK
slave-parallel-workers                                      = 0
master_info_repository                                      = TABLE
relay_log_info_repository                                   = TABLE
relay_log_recovery                                          = ON

#跳過slave進程啓動參數
#skip-slave-start

#若是實例爲從庫，則須要設置爲on
#read_only                                                   = on

#skip-grant-tables

#--------------------------------------------------------innoDB------------#
innodb_rollback_on_timeout
# Uncomment the following if you are using InnoDB tables
innodb_data_home_dir                                        = /data/mysql_data_3307
innodb_data_file_path                                       = ibdata1:1G;ibdata2:1G:autoextend
innodb_log_group_home_dir                                   = /data/mysql_data_3307
innodb_undo_directory                                       = /data/mysql_data_3307/undolog/
innodb_undo_logs                                            = 128
innodb_undo_tablespaces                                     = 3

# You can set .._buffer_pool_size up to 50 - 80 %
#innodb_use_sys_malloc = 0
#innodb_page_size = 8192
innodb_buffer_pool_size                                     = 32G
innodb_buffer_pool_instances                                = 1
#innodb_additional_mem_pool_size = 8M

# Set .._log_file_size to 25 % of buffer pool size
innodb_log_file_size                                        = 256M
innodb_log_buffer_size                                      = 64M
innodb_log_files_in_group                                   = 3
#每次事務提交時MySQL都會把log buffer的數據寫入log file，而且flush(刷到磁盤)中去，該模式爲系統默認
innodb_flush_log_at_trx_commit                              = 1
innodb_lock_wait_timeout                                    = 120
#啓用獨立表空間
innodb_file_per_table                                       = 1

#CPU是1顆8核的，那麼能夠設置
innodb_read_io_threads                                      = 8
innodb_write_io_threads                                     = 8

#默認是0，則表示沒有併發線程數限制，全部請求都會直接請求線程執行，當併發用戶線程數量小於64，建議設置innodb_thread_concurrency=0，在大多數狀況下，最佳的值是小於並接近虛擬CPU的個數
innodb_thread_concurrency                                   = 12
innodb_max_dirty_pages_pct                                  = 75
innodb_flush_method                                         = O_DIRECT

innodb_purge_threads                                        = 10
innodb_large_prefix                                         = 1

#參數待測試
#innodb_io_capacity                                         = 20000
#innodb_io_capacity_max                                     = 40000

#根據CPU核心數來設定
thread_pool_size                                            = 8
#thread_handling = pool-of-threads
thread_pool_oversubscribe                                   = 24

#thread_handling                             = pool-of-threads
thread_pool_stall_limit                                     = 100
thread_pool_max_threads                                     = 30

#解釋： 在啓動時把熱數據加載到內存。
innodb_buffer_pool_load_at_startup                          = 1
#解釋： 在關閉時把熱數據dump到本地磁盤
innodb_buffer_pool_dump_at_shutdown                         = 1

##默認是8M, 若是一次insert數據量比較多的話, 能夠適當增長
innodb_autoextend_increment                                 = 32

[mysqldump]
quick
max_allowed_packet                                          = 512M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[myisamchk]
#key_buffer_size = 20M
#sort_buffer_size = 20M
key_buffer_size                                             = 200M
sort_buffer_size                                            = 200M
read_buffer                                                 = 2M
write_buffer                                                = 2M

[mysqld_safe]
#控制文件打開數的show global status like 'open%file%';比較合適的設置：Open_files / open_files_limit * 100% <= 75%
open-files-limit                                            = 65535
log-error                                                   = /data/mysql_data_3307/error.log

[mysqlhotcopy]
interactive-timeout


3.初始化並啓動3307示例數據庫
/usr/local/mysql3307/bin/mysqld --defaults-file=/etc/my_3307.cnf --initialize-insecure --user=mysql --basedir=/usr/local/mysql3307 --datadir=/data/mysql_data_3307

nohup /usr/local/percona-server-5.7.24/bin/mysqld_safe --defaults-file=/etc/my_3307.cnf &

4.導入task庫到新實例中

5.啓動主從同步 3307 的task --> 192.168.10.189(master)

mysql> show master status;
+------------------+-----------+--------------+------------------+-------------------+
| File             | Position  | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+-----------+--------------+------------------+-------------------+
| mysql-bin.000532 | 100722038 |              |                  |                   |
+------------------+-----------+--------------+------------------+-------------------+

change master to master_host='192.168.10.189',master_user='rep',master_password='wsdb123',master_log_file='mysql-bin.000532',master_log_pos=100722038;


# sql shell命令行 下執行 關閉數據庫的命令
# shutdown;


# 添加備份用戶
GRANT RELOAD, PROCESS, SUPER, LOCK TABLES, REPLICATION CLIENT, CREATE TABLESPACE ON *.* TO 'xtrabackup'@'localhost' identified by 'pass';
flush privileges;

# 新增只對127.0.0.1有權限的root連接帳號
GRANT ALL PRIVILEGES ON *.* TO 'root'@'127.0.0.1' IDENTIFIED BY 'pass' WITH GRANT OPTION;
flush privileges;

# 修改root用戶密碼
update mysql.user set authentication_string = password('pass'), password_expired = 'N', password_last_changed = now() where user = 'root';

# 對單個數據庫受權
grant select,insert,update,delete on task.* to task_user_write@"%" identified by "pass";