今天有幸尝试安装了社区版本的mysql8.0.15,记录下来，供以后方便使用。特此感谢知数堂的叶金荣，提供了配置文件的模板。

# 第一部分：系统配置

# 1、安装系统依赖包

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

# 2、关闭selinux

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

# 3、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        65535EOF

# 4、修改内核参数

cat >>/etc/sysctl.conf < "no-auto-rehash

[mysqld]
user    = mysql
port    = 3306admin_address = 127.0.0.1basedir    = /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 = 4slave_parallel_type = LOGICAL_CLOCK

open_files_limit    = 65535back_log = 1024max_connections = 1024max_connect_errors = 1000000table_open_cache = 1024table_definition_cache = 1024table_open_cache_instances = 64thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 4M
join_buffer_size = 4M
thread_cache_size = 1536interactive_timeout = 600wait_timeout = 600tmp_table_size = 32M
max_heap_table_size = 32M
slow_query_log = 1log_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 = 0.1log_queries_not_using_indexes =1log_throttle_queries_not_using_indexes = 60min_examined_row_limit = 100log_slow_admin_statements = 1log_slow_slave_statements = 1server-id = 3306log-bin = /data/mysql/mysql_3306/logs/mysql-bin
sync_binlog = 1binlog_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 = 1log_slave_updates
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'binlog_format = row
binlog_row_image=FULL
binlog_checksum = 1relay_log_recovery = 1relay-log-purge = 1key_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 = 1lock_wait_timeout = 3600explicit_defaults_for_timestamp = 1innodb_thread_concurrency = 0innodb_sync_spin_loops = 100innodb_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 = 4innodb_buffer_pool_load_at_startup = 1innodb_buffer_pool_dump_at_shutdown = 1innodb_data_file_path = ibdata1:1G:autoextend
innodb_flush_log_at_trx_commit = 1innodb_log_buffer_size = 32M
innodb_log_file_size = 2G
innodb_log_files_in_group = 3innodb_max_undo_log_size = 4G
innodb_undo_directory = /data/mysql/mysql_3306/undolog
innodb_undo_tablespaces = 95# 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 - 80000innodb_io_capacity = 4000innodb_io_capacity_max = 8000innodb_flush_sync = 0innodb_flush_neighbors = 0innodb_write_io_threads = 8innodb_read_io_threads = 8innodb_purge_threads = 4innodb_page_cleaners = 4innodb_open_files = 65535innodb_max_dirty_pages_pct = 50innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 10innodb_rollback_on_timeout = 1innodb_print_all_deadlocks = 1innodb_file_per_table = 1innodb_online_alter_log_max_size = 4Ginnodb_stats_on_metadata = 0# some var for MySQL 8log_error_verbosity = 3innodb_print_ddl_logs = 1binlog_expire_logs_seconds = 2592000#innodb_dedicated_server = 0innodb_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 = 0innodb_status_output_locks = 0#performance_schema
performance_schema = 1performance_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"validate_password_policy=LOW

[mysqldump]
quick
max_allowed_packet = 32M

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

# 7、修改目录权限

chown -R mysql.mysql /data/mysql/mysql_3306

# 8、初始化数据库

# /usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql --initialize-insecure
# 官方推荐使用--initialize，会在错误日志中生成难以输入的临时密码，我这里使用的免密码的方式。/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql_3306/my_3306.cnf --initialize-insecure  --user=mysql &

# 9、查看日志

# tail -f /data/mysql/mysql_3306/logs/error.log

# 10、启动数据库

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/mysql/mysql_3306/my_3306.cnf &

# 11、首次登录方式

/usr/local/mysql/bin/mysql --socket=/data/mysql/mysql_3306/tmp/mysql_3306.sock

# 12、初次登陆强制修改密码方法

# ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'UbP*tzonifjZdP$jsvYu' PASSWORD EXPIRE NEVER ;
# flush privileges;
# ALTER USER 'root'@'localhost' IDENTIFIED  BY 'AnvcTMagdLarwNV3CKaC' PASSWORD EXPIRE NEVER ; 
# ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'AnvcTMagdLarwNV3CKaC' PASSWORD EXPIRE NEVER ;
# 创建普通权限
# create user 'test_w'@'%' identified by 'azpfT%aptxL^$XrBI&kk' PASSWORD EXPIRE NEVER ;
# grant insert,delete,update,select on db144.* to 'test_w'@'%' ;


ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'AnvcTMagdLarwNV3CKaC' PASSWORD EXPIRE NEVER ;
create user 'root'@'127.0.0.1' identified WITH mysql_native_password by 'AnvcTMagdLarwNV3CKaC' PASSWORD EXPIRE NEVER ;
grant all privileges on *.* to 'root'@'127.0.0.1' with grant option;

create user 'admin_m'@'127.0.0.1' identified WITH mysql_native_password by 'rA75MQy*R*y@KO4z%LZe' PASSWORD EXPIRE NEVER ; 
grant all privileges on *.* to 'admin_m'@'127.0.0.1' with grant option;

create user 'admin_m'@'%' identified WITH mysql_native_password by 'rA75MQy*R*y@KO4z%LZe' PASSWORD EXPIRE NEVER ; 
grant all privileges on *.* to 'admin_m'@'%' with grant option;

create user 'test_w'@'%' identified with mysql_native_password by 'azpfT%aptxL^$XrBI&kk' PASSWORD EXPIRE NEVER ;
grant insert,delete,update,select on db144.* to 'test_w'@'%' ;

# 13、创建软连接

ln -s /usr/local/mysql/bin/* /usr/bin/
ln -s /usr/local/mysql/lib/* /usr/lib64/

# 14、快捷登陆

  >>/root/.bashrc <