一、系统安装包

yum -y install make gcc-c++ cmake bison-devel ncurses-devel readline-devel libaio-devel perl libaio wget lrzsz vim libnuma* bzip2 xz

二、关闭防火墙和selinux

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
setenforce 0

/etc/init.d/iptables stop

echo "/etc/init.d/iptables stop">>/etc/rc.local

三、修改系统限制参数

cat >> /etc/security/limits.conf << EOF
#
###custom
#
* soft nofile 20480
* hard nofile 65535
* soft nproc 20480
* hard nproc 65535
EOF

四、配置每台hosts主机解析

cat >> /etc/hosts <<"EOF"

10.10.146.28 bj-db-m1 
10.10.1.139 bj-db-m2 
10.10.173.84 bj-db-m3 

EOF

五、修改内核参数

cat >>/etc/sysctl.conf <<"EOF"
vm.swappiness=0
#增加tcp支持的队列数
net.ipv4.tcp_max_syn_backlog = 65535
#减少断开连接时 ，资源回收
net.ipv4.tcp_max_tw_buckets = 8000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 10
#改变本地的端口范围
net.ipv4.ip_local_port_range = 1024 65535
#允许更多的连接进入队列
net.ipv4.tcp_max_syn_backlog = 4096 
#对于只在本地使用的数据库服务器
net.ipv4.tcp_fin_timeout = 30
#端口监听队列
net.core.somaxconn=65535
#接受数据的速率
net.core.netdev_max_backlog=65535
net.core.wmem_default=87380
net.core.wmem_max=16777216
net.core.rmem_default=87380
net.core.rmem_max=16777216
EOF

sysctl -p

六、下载安装包

wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz
# 解压安装包
tar -xJf mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz
# 进入目录，做软连接，方便以后升级
cd /usr/local/
ln -s /opt/mysql-8.0.18-linux-glibc2.12-x86_64 mysql
# 创建用户
groupadd mysql
useradd -g mysql mysql -d /home/mysql -s /sbin/nologin

# 创建相应的目录

mkdir -p /data/mysql/mysql_3306/{logs,tmp,undolog}

七、创建my.cnf配置文件

7-1、第一台配置

# 第一台
if [ -f /etc/my.cnf ]; then
 mv /etc/my.cnf /etc/my.cnf.`date +%Y%m%d%H%m`.bak
fi 
# node1
cat >/data/mysql/mysql_3306/my_3306.cnf <<"EOF"
[client]
port = 3306
socket = /data/mysql/mysql_3306/tmp/mysql_3306.sock

[mysql]
prompt="\u@\h \R:\m:\s [\d]> "
no-auto-rehash

[mysqld]
user = mysql
port = 3306
admin_address = 127.0.0.1
basedir = /usr/local/mysql
datadir = /data/mysql/mysql_3306/data
socket = /data/mysql/mysql_3306/tmp/mysql_3306.sock
pid-file = mysql_3306.pid
character-set-server = utf8mb4
skip_name_resolve = 1

#replicate-wild-ignore-table=mysql.%
#replicate-wild-ignore-table=test.%
#replicate-wild-ignore-table=information_schema.%

# Two-Master configure
#server-1 
#auto-increment-offset = 1
#auto-increment-increment = 2 

#server-2    
#auto-increment-offset = 2
#auto-increment-increment = 2


# semi sync replication settings #
#plugin_dir = /usr/local/mysql/lib/mysql/plugin
#plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
plugin_dir = /usr/local/mysql/lib/plugin #官方版本的路径
plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" #官方版本的路径

slave_parallel_workers = 4
slave_parallel_type = LOGICAL_CLOCK
slave_preserve_commit_order = 1

open_files_limit = 65535
back_log = 1024
max_connections = 1024
max_connect_errors = 1000000
table_open_cache = 1024
table_definition_cache = 1024
table_open_cache_instances = 64
thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 1536
interactive_timeout = 600
wait_timeout = 600
tmp_table_size = 32M
max_heap_table_size = 32M
slow_query_log = 1
log_timestamps = SYSTEM
slow_query_log_file = /data/mysql/mysql_3306/logs/slow.log
log-error = /data/mysql/mysql_3306/logs/error.log
long_query_time = 0.1
log_queries_not_using_indexes =1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
server-id = 1423306
log-bin = /data/mysql/mysql_3306/logs/mysql-bin
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 2G
max_binlog_size = 1G
binlog_expire_logs_seconds=2592000 
master_info_repository = TABLE
relay_log_info_repository = TABLE
gtid_mode = on
enforce_gtid_consistency = 1
binlog_checksum=NONE
log_slave_updates
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'
binlog_format = row
binlog_row_image=FULL

relay_log_recovery = 1
relay-log-purge = 1
key_buffer_size = 32M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
lock_wait_timeout = 3600
explicit_defaults_for_timestamp = 1
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30

#transaction_isolation = REPEATABLE-READ
transaction_isolation = READ-COMMITTED
#innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 2867M
innodb_buffer_pool_instances = 4
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:1G:autoextend
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
innodb_log_file_size = 2G
innodb_log_files_in_group = 3
innodb_max_undo_log_size = 4G
innodb_undo_directory = /data/mysql/mysql_3306/undolog

# 根据您的服务器IOPS能力适当调整
# 一般配普通SSD盘的话，可以调整到 10000 - 20000
# 配置高端PCIe SSD卡的话，则可以调整的更高，比如 50000 - 80000
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_sync = 0
innodb_flush_neighbors = 0
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_purge_threads = 4
innodb_page_cleaners = 4
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 4G
innodb_stats_on_metadata = 0

# some var for MySQL 8
log_error_verbosity = 3
innodb_print_ddl_logs = 1
binlog_expire_logs_seconds = 2592000
#innodb_dedicated_server = 0

innodb_status_file = 1
# 注意: 开启 innodb_status_output & innodb_status_output_locks 后, 可能会导致log-error文件增长较快
innodb_status_output = 0
innodb_status_output_locks = 0

#performance_schema
performance_schema = 1
performance_schema_instrument = '%memory%=on'
performance_schema_instrument = '%lock%=on'

#innodb monitor
innodb_monitor_enable="module_innodb"
innodb_monitor_enable="module_server"
innodb_monitor_enable="module_dml"
innodb_monitor_enable="module_ddl"
innodb_monitor_enable="module_trx"
innodb_monitor_enable="module_os"
innodb_monitor_enable="module_purge"
innodb_monitor_enable="module_log"
innodb_monitor_enable="module_lock"
innodb_monitor_enable="module_buffer"
innodb_monitor_enable="module_index"
innodb_monitor_enable="module_ibuf_system"
innodb_monitor_enable="module_buffer_page"
innodb_monitor_enable="module_adaptive_hash"

#MGR
#GR配置项 基中loose前缀表示若group Replication plugin未加载 mysql server仍明治维新启动
transaction_write_set_extraction = XXHASH64 #对每个事务获取write set，并且用XXHASH64算法获取hash值
loose-group_replication_group_name = "58f6e65e-9309-11e9-9d88-525400184a0a" #组名，此处可拿select uuid()生成
loose-group_replication_start_on_boot = off #在mysqld启动时不自动启动组复制
loose-group_replication_local_address = "10.10.146.28:33006" #本节点的IP地址和端口，注意该端口是组内成员之间通信的端口，而不是MySQL对外提供服务的端口
loose-group_replication_group_seeds = "10.10.146.28:33006,10.10.1.139:33006,10.10.173.84:33006" #种子节点的IP和端口号，新成员加入到集群的时候需要联系种子节点，启动集群的节点不使用该选项
loose-group_replication_bootstrap_group = off #关闭，如果打开会造成脑裂 #是否启动集群，注意，该选项任何时候只能用于一个节点，通常情况下启动集群的时候使用，启动之后需要关闭该选项

loose-group_replication_member_weight = 50 #权重选择


[mysqldump]
quick
max_allowed_packet = 32M

[mysqld_safe]
#malloc-lib=/usr/local/mysql/lib/jmalloc.so 
nice=-19
open-files-limit=65535

EOF