MYSQL8集群是在MYSQL的基礎上實現了高可用性、負載均衡以及數據的備份與恢復的一種方法。下面是MYSQL8集群搭建過程：

1. 安裝MA安裝包

wget http://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm
rpm -ivh mysql80-community-release-el7-3.noarch.rpm
yum install mysql-connector-java mysql-shell mysql-router -y

2. 安裝mysql-server

yum install mysql-server -y
systemctl start mysqld
systemctl enable mysqld

3. 創建mysql用戶和密碼

mysql -uroot -p
CREATE USER 'mysql'@'%' IDENTIFIED BY 'mysql';
GRANT ALL PRIVILEGES ON *.* TO 'mysql'@'%';
FLUSH PRIVILEGES;
quit

4. 安裝ndb包

wget http://dev.mysql.com/get/Downloads/MySQL-Cluster-7.6/mysql-cluster-gpl-7.6.9-linux-glibc2.12-x86_64.tar.gz
tar zxvf mysql-cluster-gpl-7.6.9-linux-glibc2.12-x86_64.tar.gz

5. 創建MYSQL Cluster配置文件

[ndbd default]
noofreplicas=2
datadir=/usr/local/mysql/data
[ndb_mgmd]
hostname=192.168.1.1
datadir=/usr/local/mysql/data
id=1
[ndbd]
hostname=192.168.1.2
datadir=/usr/local/mysql/data
id=2
[ndbd]
hostname=192.168.1.3
datadir=/usr/local/mysql/data
id=3
[mysqld]
hostname=192.168.1.4

6. 開始安裝MYSQL Cluster

cd mysql-cluster-gpl-7.6.9-linux-glibc2.12-x86_64
./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
./bin/ndb_mgmd -f /usr/local/mysql-cluster/config.ini --initial --configdir=/usr/local/mysql-cluster
./bin/ndbd --initial --my-node-id=2 --config-dir=/usr/local/mysql-cluster
./bin/ndbd --initial --my-node-id=3 --config-dir=/usr/local/mysql-cluster
./bin/mysql -uroot -p
CREATE DATABASE mysqlcluster;
USE mysqlcluster;
CREATE TABLE test_mysql_cluster ( id INT NOT NULL PRIMARY KEY, name VARCHAR(50));
quit

7. 啟動MYSQL Cluster

./bin/mysqld --defaults-file=/usr/local/mysql/mysql-cluster/config.ini --ndbcluster --ndb-connectstring=192.168.1.1:1186

至此，MYSQL8集群搭建完成。以上是簡單的搭建過程，搭建過程中遇到問題，可以到官網進行查找解決方案。