MySQL Group Relication 部署环境入门篇

Posted 2020-10-29 gostars

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一：环境介绍

cenos 6.7 版本数据库的版本5.7.19

二：部署规划单机多实例的部署

端口号	数据目录	group_repplicatoon 通信接口
3307	/data/mysql/mysql_3306{data,logs,tmp}	23307
3308	/data/mysql/mysql_3307{data,logs,tmp}	23308
3309	/data/mysql/mysql_3308{data,logs,tmp}	23309

环境的准备：

# cd /opt/mysql/

# tar zxvf /path/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz

# cd /usr/local

#ln -s /opt/mysql/mysql-5.7.19-linux-glibc2.12-x86_64 mysql

创建数据库实列需要的数据目录

# /data/mysql/mysql_3306/{data,logs,tmp}

# /data/mysql/mysql_3307/{data,logs,tmp}

#/data/mysql/mysql_3308/{data,logs,tmp}

更改目录的权限:

chown -R mysql:mysql /data/mysql/

配置文件：

#my.cnf

[client]

port            = 3307

socket          = /tmp/mysql3307.sock

[mysql]

prompt="\\\\[email protected]\\\\h:\\\\p  [\\\\d]>

#pager="less -i -n -S"

#tee=/home/mysql/query.log

no-auto-rehash

[mysqld]

#misc

user = mysql

basedir = /usr/local/mysql

datadir = /data/mysql/mysql_3306/data

port = 3306

socket = /tmp/mysql3306.sock

event_scheduler = 0

tmpdir=/data/mysql/mysql_3306/tmp

#timeout

interactive_timeout = 300

wait_timeout = 300

#character set

character-set-server = utf8

open_files_limit = 65535

max_connections = 100

max_connect_errors = 100000

#

explicit_defaults_for_timestamp

#logs

log-output=file

slow_query_log = 1

slow_query_log_file = slow.log

log-error = error.log

log_error_verbosity=3

pid-file = mysql.pid

long_query_time = 1

#log-slow-admin-statements = 1

#log-queries-not-using-indexes = 1

log-slow-slave-statements = 1

#binlog

binlog_format = row

log-bin = /data/mysql/mysql_3306/logs/mysql-bin

binlog_cache_size = 1M

max_binlog_size = 200M

max_binlog_cache_size = 2G

sync_binlog = 0

expire_logs_days = 10

#group replication

server_id=1013307

gtid_mode=ON

enforce_gtid_consistency=ON

master_info_repository=TABLE

relay_log_info_repository=TABLE

binlog_checksum=NONE

log_slave_updates=ON

binlog_format=ROW

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="3db33b36-0e51-409f-a61d-c99756e90155"

loose-group_replication_start_on_boot=off

loose-group_replication_local_address= "192.168.5.100:23307" ###注意端口号，要区分开，不要和我们默认的3306混淆了

loose-group_replication_group_seeds= "192.168.5.100:23307,192.168.5.100:23308,192.168.5.100:23309"

loose-group_replication_bootstrap_group= off

loose-group_replication_single_primary_mode=off

loose-group_replication_enforce_update_everywhere_checks=on

#relay log

skip_slave_start = 1

max_relay_log_size = 500M

relay_log_purge = 1

relay_log_recovery = 1

#slave-skip-errors=1032,1053,1062

#buffers & cache

table_open_cache = 2048

table_definition_cache = 2048

table_open_cache = 2048

max_heap_table_size = 96M

sort_buffer_size = 2M

join_buffer_size = 2M

thread_cache_size = 256

query_cache_size = 0

query_cache_type = 0

query_cache_limit = 256K

query_cache_min_res_unit = 512

thread_stack = 192K

tmp_table_size = 96M

key_buffer_size = 8M

read_buffer_size = 2M

read_rnd_buffer_size = 16M

bulk_insert_buffer_size = 32M

#myisam

myisam_sort_buffer_size = 128M

myisam_max_sort_file_size = 10G

myisam_repair_threads = 1

#innodb

innodb_buffer_pool_size = 100M

innodb_buffer_pool_instances = 1

innodb_data_file_path = ibdata1:100M:autoextend

innodb_flush_log_at_trx_commit = 2

innodb_log_buffer_size = 64M

innodb_log_file_size = 256M

innodb_log_files_in_group = 3

innodb_max_dirty_pages_pct = 90

innodb_file_per_table = 1

innodb_rollback_on_timeout

innodb_status_file = 1

innodb_io_capacity = 2000

transaction_isolation = READ

初始化第一个节点：

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_3306.cnf --initialize-insecure

启动第一个节点

/usr/local/mysql/bin/mysql/mysql_3306/my_3306.cnf&

创建复制账号

#mysql>SET SQL_LOG_BIN=0

#mysql>CREATE USER [email protected]‘%‘;

#mysql>GRANT REPLICATION SLAVE ON *.* TO ‘rpl_user‘@‘%‘ identified by ‘123456‘;

#mysql>SET SQL_LOG_BIN=1

搭建主从：

change master to master_user=‘rpl_user‘,MASTER_PASSWORD=‘123456‘ for channel ‘group_replication_recovery‘;

加载 group replication 的plugin

install plugin group_replication soname ‘group_replication.so‘;

查看我们刚刚加载的插件：SHOW PLUGINS

启动第一个节点的 Group Replication:

#mysql> set global group_replication_bootstrap_group=ON; # 只在第一个节点使用
#mysq>START GROUP_REPLICATION;

停止组复制：

stop group_replication;

确认节点加入情况：

select * from performance_schema.replication_group_members;

确认每个节点加入成功

创建一个测试库

create database czg;

use czg;

create table t1 (id int not null,name varchar(32), primary key(id));

insert into t1 values(1,‘chen‘),(‘2‘,‘zhang‘);

第二个节点的安装：

初始化实列：

./mysqld --defaults-file=/data/mysql/mysql_3308/my_3308.cnf --initialize-insecure

建立复制账号：

#mysql>SET SQL_LOG_BIN=0
#mysql>CREATE USER [email protected]‘%‘;

#mysql>GRANT REPLICATION SLAVE ON *.* TO ‘rpl_user‘@‘%‘ identified by ‘123456‘;

#mysql>SET SQL_LOG_BIN=1

搭建主从：

change master to master_user=‘rpl_user‘,MASTER_PASSWORD=‘123456‘ for channel ‘group_replication_recovery‘;

加载 group replication 的plugin

install plugin group_replication soname ‘group_replication.so‘;

确认节点加入的情况：

select * from performance_schema.replication_group_members;

第三个节点的安装：

初始化实列

./mysqld --defaults-file=/data/mysql/mysql_3309/my_3309.cnf --initialize-insecure

创建复制的账号：

#mysql>SET SQL_LOG_BIN=0

#mysql>CREATE USER [email protected]‘%‘;

#mysql>GRANT REPLICATION SLAVE ON *.* TO ‘rpl_user‘@‘%‘ identified by ‘123456‘;

#mysql>SET SQL_LOG_BIN=1

搭建主从