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Sample code sharing for MySQL-group-replication configuration steps

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2017-03-20 13:47:301551browse

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MySQL-Group-Replication is a new feature developed in the mysql-5.7.17 version; it achieves strong consistency between master-slave,

But for now, the main reason is that the performance is not very good.

【1】Make sure the current mysql database version is 5.7.17 and above

/usr/local/mysql/bin/mysqld --version
/usr/local/mysql/bin/mysqld Ver 5.7.17 for linux-glibc2.5 on x86_64 (MySQL Community Server (GPL))

【2】Experiment The environment is to install three mysqls on one host. The three of them form a group-replication group

/tmp/4406.cnf. The content is as follows:

[mysqld]
####: for global
user          =jianglexing          #  mysql
basedir          =/usr/local/mysql        #  /usr/local/mysql/
datadir          =/tmp/4406/          #  /usr/local/mysql/data
server_id        =4406            #  0
port          =4406            #  3306
socket          =/tmp/4406/mysql.sock        #  /tmp/mysql.sock
auto_increment_increment    =1            #  1
auto_increment_offset      =1            #  1
lower_case_table_names      =1            #  0
secure_file_priv      =            #  null


####: for binlog
binlog_format        =row            #  row
log_bin          =mysql-bin          #  off
binlog_rows_query_log_events    =on            #  off
log_slave_updates      =on            #  off
expire_logs_days      =4            #  0
binlog_cache_size      =32768            #  32768(32k)
binlog_checksum        =none            #  CRC32
sync_binlog        =1            #  1


####: for error-log
log_error        =mysql-err.log          #  /usr/local/mysql/data/localhost.localdomain.err


####: for slow query log


####: for gtid
gtid_mode        =on            #  off
enforce_gtid_consistency    =on            #  off


####: for replication
master_info_repository      =table            #  file
relay_log_info_repository    =table            #  file


####: for group replication
transaction_write_set_extraction  =XXHASH64          #  off
loose-group_replication_group_name  ="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"    #  
loose-group_replication_start_on_boot  =off            #  off
loose-group_replication_local_address  ="127.0.0.1:24901"        #
loose-group_replication_group_seeds  ="127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
loose-group_replication_bootstrap_group  =off            #  off


####: for innodb
default_storage_engine      =innodb            #  innodb
default_tmp_storage_engine    =innodb            #  innodb
innodb_data_file_path      =ibdata1:12M:autoextend        #  ibdata1:12M:autoextend
innodb_temp_data_file_path    =ibtmp1:12M:autoextend        #  ibtmp1:12M:autoextend
innodb_log_group_home_dir    =./            #  ./
innodb_log_files_in_group    =2            #  2
innodb_log_file_size      =48M            #  50331648(48M)
innodb_file_format      =Barracuda          #  Barracuda
innodb_file_per_table      =on             #  on
innodb_page_size      =16k            #  16384(16k)
innodb_thread_concurrency    =0            #  0
innodb_read_io_threads      =4            #  4
innodb_write_io_threads      =4            #  4
innodb_purge_threads      =4            #  4
innodb_print_all_deadlocks    =on            #  off
innodb_deadlock_detect      =on            #  on
innodb_lock_wait_timeout    =50            #  50
innodb_spin_wait_delay      =6            #  6
innodb_autoinc_lock_mode    =2            #  1
innodb_stats_persistent      =on            #  on
innodb_stats_persistent_sample_pages  =20            #  20
innodb_adaptive_hash_index    =on            #  on
innodb_change_buffering      =all            #  all
innodb_change_buffer_max_size    =25            #  25
innodb_flush_neighbors      =1            #  1
innodb_flush_method      =O_DIRECT          #  
innodb_doublewrite      =on            #  on
innodb_log_buffer_size      =16M            #  16777216(16M)
innodb_flush_log_at_timeout    =1            #  1
innodb_flush_log_at_trx_commit    =1            #  1
autocommit        =1            #  1

[client]
auto-rehash

/tmp The content of /5506.cnf is as follows:

[mysqld]
####: for global
user          =jianglexing          #  mysql
basedir          =/usr/local/mysql        #  /usr/local/mysql/
datadir          =/tmp/5506        #  /usr/local/mysql/data
server_id        =5506            #  0
port          =5506            #  3306
socket          =/tmp/5506/mysql.sock        #  /tmp/mysql.sock
auto_increment_increment    =1            #  1
auto_increment_offset      =1            #  1
lower_case_table_names      =1            #  0
secure_file_priv      =            #  null


####: for binlog
binlog_format        =row            #  row
log_bin          =mysql-bin          #  off
binlog_rows_query_log_events    =on            #  off
log_slave_updates      =on            #  off
expire_logs_days      =4            #  0
binlog_cache_size      =32768            #  32768(32k)
binlog_checksum        =none            #  CRC32
sync_binlog        =1            #  1


####: for error-log
log_error        =mysql-err.log          #  /usr/local/mysql/data/localhost.localdomain.err


####: for slow query log


####: for gtid
gtid_mode        =on            #  off
enforce_gtid_consistency    =on            #  off


####: for replication
master_info_repository      =table            #  file
relay_log_info_repository    =table            #  file


####: for group replication
transaction_write_set_extraction  =XXHASH64          #  off
loose-group_replication_group_name  ="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"    #  
loose-group_replication_start_on_boot  =off            #  off
loose-group_replication_local_address  ="127.0.0.1:24902"        #
loose-group_replication_group_seeds  ="127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
loose-group_replication_bootstrap_group  =off            #  off


####: for innodb
default_storage_engine      =innodb            #  innodb
default_tmp_storage_engine    =innodb            #  innodb
innodb_data_file_path      =ibdata1:12M:autoextend        #  ibdata1:12M:autoextend
innodb_temp_data_file_path    =ibtmp1:12M:autoextend        #  ibtmp1:12M:autoextend
innodb_log_group_home_dir    =./            #  ./
innodb_log_files_in_group    =2            #  2
innodb_log_file_size      =48M            #  50331648(48M)
innodb_file_format      =Barracuda          #  Barracuda
innodb_file_per_table      =on             #  on
innodb_page_size      =16k            #  16384(16k)
innodb_thread_concurrency    =0            #  0
innodb_read_io_threads      =4            #  4
innodb_write_io_threads      =4            #  4
innodb_purge_threads      =4            #  4
innodb_print_all_deadlocks    =on            #  off
innodb_deadlock_detect      =on            #  on
innodb_lock_wait_timeout    =50            #  50
innodb_spin_wait_delay      =6            #  6
innodb_autoinc_lock_mode    =2            #  1
innodb_stats_persistent      =on            #  on
innodb_stats_persistent_sample_pages  =20            #  20
innodb_adaptive_hash_index    =on            #  on
innodb_change_buffering      =all            #  all
innodb_change_buffer_max_size    =25            #  25
innodb_flush_neighbors      =1            #  1
innodb_flush_method      =O_DIRECT          #  
innodb_doublewrite      =on            #  on
innodb_log_buffer_size      =16M            #  16777216(16M)
innodb_flush_log_at_timeout    =1            #  1
innodb_flush_log_at_trx_commit    =1            #  1
autocommit        =1            #  1

/tmp/6606.cnf The content is as follows:

[mysqld]
####: for global
user          =jianglexing          #  mysql
basedir          =/usr/local/mysql        #  /usr/local/mysql/
datadir          =/tmp/6606/        #  /usr/local/mysql/data
server_id        =6606            #  0
port          =6606            #  3306
socket          =/tmp/6606/mysql.sock        #  /tmp/mysql.sock
auto_increment_increment    =1            #  1
auto_increment_offset      =1            #  1
lower_case_table_names      =1            #  0
secure_file_priv      =            #  null


####: for binlog
binlog_format        =row            #  row
log_bin          =mysql-bin          #  off
binlog_rows_query_log_events    =on            #  off
log_slave_updates      =on            #  off
expire_logs_days      =4            #  0
binlog_cache_size      =32768            #  32768(32k)
binlog_checksum        =none            #  CRC32
sync_binlog        =1            #  1


####: for error-log
log_error        =mysql-err.log          #  /usr/local/mysql/data/localhost.localdomain.err


####: for slow query log


####: for gtid
gtid_mode        =on            #  off
enforce_gtid_consistency    =on            #  off


####: for replication
master_info_repository      =table            #  file
relay_log_info_repository    =table            #  file


####: for group replication
transaction_write_set_extraction  =XXHASH64          #  off
loose-group_replication_group_name  ="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"    #  
loose-group_replication_start_on_boot  =off            #  off
loose-group_replication_local_address  ="127.0.0.1:24903"        #
loose-group_replication_group_seeds  ="127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
loose-group_replication_bootstrap_group  =off            #  off


####: for innodb
default_storage_engine      =innodb            #  innodb
default_tmp_storage_engine    =innodb            #  innodb
innodb_data_file_path      =ibdata1:12M:autoextend        #  ibdata1:12M:autoextend
innodb_temp_data_file_path    =ibtmp1:12M:autoextend        #  ibtmp1:12M:autoextend
innodb_log_group_home_dir    =./            #  ./
innodb_log_files_in_group    =2            #  2
innodb_log_file_size      =48M            #  50331648(48M)
innodb_file_format      =Barracuda          #  Barracuda
innodb_file_per_table      =on             #  on
innodb_page_size      =16k            #  16384(16k)
innodb_thread_concurrency    =0            #  0
innodb_read_io_threads      =4            #  4
innodb_write_io_threads      =4            #  4
innodb_purge_threads      =4            #  4
innodb_print_all_deadlocks    =on            #  off
innodb_deadlock_detect      =on            #  on
innodb_lock_wait_timeout    =50            #  50
innodb_spin_wait_delay      =6            #  6
innodb_autoinc_lock_mode    =2            #  1
innodb_stats_persistent      =on            #  on
innodb_stats_persistent_sample_pages  =20            #  20
innodb_adaptive_hash_index    =on            #  on
innodb_change_buffering      =all            #  all
innodb_change_buffer_max_size    =25            #  25
innodb_flush_neighbors      =1            #  1
innodb_flush_method      =O_DIRECT          #  
innodb_doublewrite      =on            #  on
innodb_log_buffer_size      =16M            #  16777216(16M)
innodb_flush_log_at_timeout    =1            #  1
innodb_flush_log_at_trx_commit    =1            #  1
autocommit        =1            #  1

【3】Initialize three database instances

cd /usr/local/mysql/
./bin/mysqld --defautls-file=/tmp/4406.cnf --datadir=/tmp/4406 --initialize-insecrue

./bin/mysqld --defautls-file=/tmp/5506.cnf --datadir=/tmp/5506 --initialize-insecrue

./bin/mysqld --defautls-file=/tmp/6606.cnf --datadir=/tmp/6606 --initialize-insecrue

【4】Configuring the initial instance of group-replication

/usr/local/mysql/bin/mysqld --defaults-file=/tmp/4406.cnf &
mysql -h127.0.0.1 -uroot -P4406

-- 增加用户
    set sql_log_bin=0;
    create user rpl_user@'%' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'%';
    create user rpl_user@'127.0.0.1' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'127.0.0.1';
    create user rpl_user@'localhost' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'localhost';
    set sql_log_bin=1;

-- 增加复制凭证
    change master to 
      master_user='rpl_user',
      master_password='123456'
      for channel 'group_replication_recovery';

-- 安装组复制物件
    install plugin group_replication soname 'group_replication.so';

-- 启动组复制
    set global group_replication_bootstrap_group=on;
    start group_replication;
    set global group_replication_bootstrap_group=off;

【5】Configuration process of 5506 instance As follows:

/usr/local/mysql/bin/mysqld --defaults-file=/tmp/5506.cnf &
mysql -h127.0.0.1 -uroot -P5506

-- 增加用户
    set sql_log_bin=0;
    create user rpl_user@'%' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'%';
    create user rpl_user@'127.0.0.1' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'127.0.0.1';
    create user rpl_user@'localhost' identified by '123456';
    grant replication slave,replication client on *.* to rpl_user@'localhost';
    set sql_log_bin=1;

-- 增加复制凭证
    change master to 
      master_user='rpl_user',
      master_password='123456'
      for channel 'group_replication_recovery';

-- 安装组复制物件
    install plugin group_replication soname 'group_replication.so';

-- 启动组复制
    start group_replication; # 注意这里不是初始化了,只要加入就行

[6] The operation of 6606 instance is the same as that of 5506, so the configuration of group replication is completed.

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