Shulou(Shulou.com)06/01 Report--

I wrote an article about building a MySQL Group Replication test environment minute by minute. If we want to build a master and multi-slave test environment on a server, how can we do it minute by minute? in fact, it can be done by taking a little time to write a script. It is nothing more than integrating the stylized things and simplifying them. It is good to be able to improve efficiency.

To build a master-slave environment, we still prepare a configuration file init2.lst, which is mainly port and node identification.

24801 s1 Y

24802 s2 N

24803 s3 N

24804 s4 N

24805 s5N, for example, I created five nodes, the port is the first column, the second column is a sign of the node, the generated node directory name is to refer to this, and the third column is the role of the node, such as one master and four slaves. The master is P and the slave is N

Unified parameter file, this place is worthy of our improvement, because the individual configuration parameters are different, there is no need to specify multiple parameter files, can be generated dynamically. # cat s2.cnf

[mysqld]

# server configuration

Datadir=$ {base_data_dir} / ${node_name}

Basedir=$ {base_dir}

Port=$ {port}

Socket=$ {base_data_dir} / ${node_name} / ${node_name} .sock

Server_id=$ {port}

Gtid_mode=ON

Enforce_gtid_consistency=ON

Master_info_repository=TABLE

Relay_log_info_repository=TABLE

Binlog_checksum=NONE

Log_slave_updates=ON

Log_bin=binlog

Binlog_format=ROW

And the protagonist of this function is the whole script content.

The script is as follows:

Base_dir=/usr/local/mysql

Base_data_dir=/home/data

Pri_port= `cat init2.lst | grep Y | awk'{cat $1}'`

Pri_ip=127.0.0.1

Pri_node= `cat init2.lst | grep Y | awk'{cat $2}'`

Function init_node

{

Port=$1

Node_name=$2

Primary_flag=$3

${base_dir} / bin/mysqld-initialize-insecure-basedir=$ {base_dir}-datadir=$ {base_data_dir} / ${node_name}-explicit_defaults_for_timestamp

Chown-R mysql:mysql ${base_data_dir} / ${node_dir}

Cp ${base_data_dir} / s2.cnf ${base_data_dir} / ${node_name} / ${node_name} .cnf

Sed-I's base_data_dir ${base_data_dir}:'"${base_data_dir}: G"'${base_data_dir} / ${node_name} / ${node_name} .cnf

Sed-I's base_dir ${base_dir}:'"${base_dir}: G"'${base_data_dir} / ${node_name} / ${node_name} .cnf

Sed-I's node_name ${node_name}:'"${node_name}: G"'${base_data_dir} / ${node_name} / ${node_name} .cnf

Sed-I's port ${port}:'"${port}: G"'${base_data_dir} / ${node_name} / ${node_name} .cnf

Chown-R mysql:mysql ${base_data_dir} / ${node_name}

${base_dir} / bin/mysqld_safe-- defaults-file=$ {base_data_dir} / ${node_name} / ${node_name} .cnf &

Sleep 5

${base_dir} / bin/mysql-P ${port}-S ${base_data_dir} / ${node_name} / ${node_name} .sock-e "show databases"

If [[${primary_flag} ='Y']]; then

Mysql-P ${port}-S ${base_data_dir} / ${node_name} / ${node_name} .sock-e "

CREATE USER rpl_user@'%'

GRANT REPLICATION SLAVE ON *. * TO rpl_user@'%' IDENTIFIED BY 'rpl_pass'

FLUSH PRIVILEGES

"

Elif [[${primary_flag} ='N']]; then

Echo ${pri_node} "primary"

Echo ${pri_port}

Mysqldump-P$ {pri_port}-S ${base_data_dir} / ${pri_node} / ${pri_node} .sock-- default-character-set=utf8-- single-transaction-R-- triggers-Q-- all-databases | mysql-P$ {port}-S ${base_data_dir} / ${node_name} / ${node_name} .sock

Echo "CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_pass', MASTER_HOST='127.0.0.1',MASTER_PORT=" ${pri_port} ", MASTER_AUTO_POSITION = 1" | mysql-P$ {port}-S ${base_data_dir} / ${node_name} / ${node_name} .sock

Mysql-P ${port}-S ${base_data_dir} / ${node_name} / ${node_name} .sock-e "

Start slave

Show slave status\ G

"

Else

Echo 'Please check variable primary_flag'

Fi

}

# MAIN

While read line

Do

Echo ${seed_list}

Init_node $line

Done

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.