Author : Bilery Zoo(bilery.zoo@gmail.com) Date : 2021-04-24

       　　 　 　　　　 　 |＼＿/|
       　　 　 　　　　 　 | ・x・ |
       　　 ＼＿＿＿＿＿／　　　 |
       　　 　 |　　　 　　　　　|
       　　　　＼　　　　　 　ノ
       　（（（　(/￣￣￣￣(/ヽ)

About engineering:

This project(scripts) is to easily deploy a castrated MySQL InnoDB Cluster.
The castration is mainly represented at

	① without MySQL Shell
	② perform a "one PRIMARY - one SECONDARY" group replication without fault-tolerance

See also
	https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-cluster-introduction.html
	https://dev.mysql.com/doc/refman/8.0/en/group-replication-fault-tolerance.html

The cluster is to deploy at IBM Cloud VM(CentOS8 Linux) set menu 'BL2.2x8'(2 CPUs & 8G MEMs).
Packages to be installed are

	mysql-8.0.24-linux-glibc2.12-x86_64
	mysql-router-8.0.24-linux-glibc2.12-x86_64

Script usage:

0. mysql_v8.0generic_glibc_deploy.sh

	deploy mysql service
	
1. mysqlrouter_v8.0generic_glibc_deploy.sh

	deploy mysqlrouter service
	
2. async_replication_set.sh

	set asynchronous M-S replication(deprecated)

3. group_replication_set.sh

	set synchronous group replication(recommended)

Your attention:

Each of scripts should optionally do the parameters resetting at mascot area before executing