Mysql innodb cluster

1，准备的环境：
安装python
安装mysql数据库，并且配置组复制
2，下载安装mysql-shell下载地址

wget https://cdn.mysql.com//Downloads/MySQL-Shell/mysql-shell-8.0.12-linux-glibc2.12-x86-64bit.tar.gz
3，下载安装mysql-router 下载地址

wget https://cdn.mysql.com//Downloads/MySQL-Router/mysql-router-8.0.12-linux-glibc2.12-x86-64bit.tar.gz

4， 每台安装mysql shell 与 mysql router软件
tar -zxvf mysql shell
tar -zxvf mysql router

禁止其他引擎创建库表：在my.cnf中
disabled_storage_engines = MyISAM,BLACKHOLE,FEDERATED,CSV,ARCHIVE

5， 授予用户权限
提供的是管理Innodb集群问题所需的权限
GRANT ALL PRIVILEGES ON mysql_innodb_cluster_metadata.* TO your_user@’%’ WITH GRANT OPTION;
GRANT RELOAD,SHUTDOWN,PROCESS,FILE,SUPER,REPLICATION SLAVE,REPLICATION CLIENT,CREATE USER ON . TO your_user@’%’ WITH GRANT OPTION;
GRANT SELECT ON . TO your_user@’%’ WITH GRANT OPTION;

如果仅需要读取操作，则可以使用受限的特权账户

GRANT SELECT ON mysql_innodb_cluster_metadata.* TO your_user@’%’;
GRANT SELECT ON performance_schema.global_status TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_applier_configuration TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_applier_status TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_applier_status_by_coordinator TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_applier_status_by_worker TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_connection_configuration TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_connection_status TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_group_member_stats TO your_user@’%’;
GRANT SELECT ON performance_schema.replication_group_members TO your_user@’%’;
GRANT SELECT ON performance_schema.threads TO your_user@’%’ WITH GRANT OPTION;

6，授予权限（每台服务器上面执行）
GRANT ALL PRIVILEGES ON mysql_innodb_cluster_metadata.* TO rep1 with grant option;

GRANT RELOAD,SHUTDOWN,PROCESS,FILE,SUPER,REPLICATION SLAVE,REPLICATION CLIENT,CREATE USER ON . TO rep1 with grant option;

GRANT SELECT ON . TO rep1 with grant option;

flush privileges;

7，通过mysql shell 中的bin/mysqlsh执行
#mysql_shell路径/bin/mysqlsh
连接组复制中其中一台mysql实例，最好是连接任意一台。
shell.connect(‘rep1@10.6.248.196:3306’);
var cluster = dba.createCluster(‘prodCluster’,{adoptFromGR:true,force:true});

到此集群创建完毕！

三种帮组的用法：
dba.help()
object.help(’’)
dba.help(‘createCluster’)

8，增加实例进入Cluster
例子：因为在创建的时候已经自动将my.cnf组复制中的三个主机加进去了。所以一下只是一个例子而已！
cluster.addInstance(‘rep1@10.6.248.197:3306’);
且增加实例需要用于拥有的权限如下：
ERROR: The account ‘rep1’@’%’ is missing privileges required to manage an InnoDB cluster:
Missing privileges on schema ‘mysql’: DELETE, INSERT, UPDATE.

简单的解决办法就是：
grant all privileges on . to rep1 with grant option;

其中退出mysql JS > \quit；

9，安装router 并且执行命令（每台）：
./bin/mysqlrouter --bootstrap rep1@10.6.248.196:3306 -d myrouter --user=root
user = root （各服务器上面都需要进行创建root用户并且设定其host的范围）

-d 的意思：
为一个新的实例创建一个自包含的目录路由器。

注意一下信息：
Classic MySQL protocol connections to cluster ‘prodCluster’:

• Read/Write Connections: localhost:6446
  X protocol connections to cluster ‘prodCluster’:
• Read/Write Connections: localhost:64460

10，安装完成后，会在当前目录下生成一个myrouter的目录，下面会有一个配置文件
#vim mysqlrouter.conf
路径：/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter

配置文件如下：
[DEFAULT]
user=root
logging_folder=/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter/log
runtime_folder=/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter/run
data_folder=/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter/data
keyring_path=/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter/data/keyring
master_key_path=/mysqlAPI/mysql-router-8.0.12-linux-glibc2.12-x86-64bit/bin/myrouter/mysqlrouter.key
connect_timeout=30
read_timeout=30

[logger]
level = INFO

[metadata_cache:prodCluster]
router_id=1
bootstrap_server_addresses=mysql://Monitor:3306,mysql://Myslave:3306,mysql://Kmaster:3306
user=mysql_router1_xk5lw47ba9ky
metadata_cluster=prodCluster
ttl=300

[routing:prodCluster_default_rw]
bind_address=10.6.248.196
bind_port=6446
destinations=10.6.248.196
routing_strategy=round-robin
protocol=classic
connect_timeout = 300
client_connect_timeout = 300
max_connect_errors = 60
max_connections = 10000
mode = read-write
#mode = read-only

[routing:prodCluster_default_x_ro]
bind_address=10.6.248.196
bind_port=64460
destinations=10.6.248.197:3306,10.6.248.198:3306
routing_strategy=round-robin
protocol=x
connect_timeout = 300
client_connect_timeout = 300
max_connect_errors = 60
max_connections = 10000
mode = read-write

[routing:prodCluster_default_rw]
bind_address=10.6.248.196
bind_port=6446
destinations=10.6.248.196
routing_strategy=round-robin
protocol=x
connect_timeout = 300
client_connect_timeout = 300
max_connect_errors = 60
max_connections = 10000
mode = read-write
#mode = read-only

[routing:prodCluster_default_x_ro]
bind_address=10.6.248.196
bind_port=64460
destinations=10.6.248.197:3306,10.6.248.198:3306
routing_strategy=round-robin
protocol=classic
connect_timeout = 300
client_connect_timeout = 300
max_connect_errors = 60
max_connections = 10000
mode = read-write