这里我安装的版本为5.7.24，需要下载最新安装包的，可在官网自相下载。
1. 获取安装包
这里采用MySQL官方编译安装包，解压即可使用。下载地址： https://pan.baidu.com/s/1zeQY52td6S_Rp6MEGrZU6w
有条件的同学也可自行去官网下载。
2. 解压并创建相关目录
yum install libaio -y #安装依赖
yum install libncurses* #解决mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory groupadd -f mysql useradd -r -g mysql mysql mkdir -p /data/mysql_data && chown mysql:mysql /data/mysql_data -R mkdir -p /redolog/ && chown mysql:mysql /redolog/ mkdir -p /undolog/ && chown mysql:mysql /undolog/ cd /usr/local/ tar zxvf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz ln -s mysql-5.7.24-linux-glibc2.12-x86_64 mysql
3. 创建配置文件
vim /etc/my.cnf [mysqld] ########basic settings######## server-id = 11 port = 3306 user = mysql autocommit = 1 character_set_server=utf8mb4 skip_name_resolve = 1 max_connections = 800 max_connect_errors = 1000 datadir = /data/mysql_data transaction_isolation = READ-COMMITTED explicit_defaults_for_timestamp = 1 join_buffer_size = 134217728 tmp_table_size = 67108864 tmpdir = /tmp max_allowed_packet = 16777216 sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER" interactive_timeout = 1800 wait_timeout = 1800 read_buffer_size = 16777216 read_rnd_buffer_size = 33554432 sort_buffer_size = 33554432 ########log settings######## log_error = error.log slow_query_log = 1 slow_query_log_file = slow.log log_queries_not_using_indexes = 1 log_slow_admin_statements = 1 log_slow_slave_statements = 1 log_throttle_queries_not_using_indexes = 10 expire_logs_days = 90 long_query_time = 2 min_examined_row_limit = 100 ########replication settings######## master_info_repository = TABLE relay_log_info_repository = TABLE log_bin = bin.log sync_binlog = 1 gtid_mode = on enforce_gtid_consistency = 1 log_slave_updates binlog_format = row relay_log = relay.log relay_log_recovery = 1 binlog_gtid_simple_recovery = 1 slave_skip_errors = ddl_exist_errors ########innodb settings######## innodb_page_size = 16384 innodb_buffer_pool_size = 6G innodb_buffer_pool_instances = 8 innodb_buffer_pool_load_at_startup = 1 innodb_buffer_pool_dump_at_shutdown = 1 innodb_lru_scan_depth = 2000 innodb_lock_wait_timeout = 5 innodb_io_capacity = 4000 innodb_io_capacity_max = 8000 innodb_flush_method = O_DIRECT innodb_file_format = Barracuda innodb_file_format_max = Barracuda innodb_log_group_home_dir = /redolog/ innodb_undo_directory = /undolog/ innodb_undo_logs = 128 innodb_undo_tablespaces = 3 innodb_flush_neighbors = 1 innodb_log_file_size = 4G innodb_log_buffer_size = 16777216 innodb_purge_threads = 4 innodb_large_prefix = 1 innodb_thread_concurrency = 64 innodb_print_all_deadlocks = 1 innodb_strict_mode = 1 innodb_sort_buffer_size = 67108864 ########semi sync replication settings######## plugin_dir=/usr/local/mysql/lib/plugin plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" loose_rpl_semi_sync_master_enabled = 1 loose_rpl_semi_sync_slave_enabled = 1 loose_rpl_semi_sync_master_timeout = 5000 #[mysqld-5.7] innodb_buffer_pool_dump_pct = 40 innodb_page_cleaners = 4 innodb_undo_log_truncate = 1 innodb_max_undo_log_size = 2G innodb_purge_rseg_truncate_frequency = 128 binlog_gtid_simple_recovery=1 log_timestamps=system transaction_write_set_extraction=MURMUR32 show_compatibility_56=on
4. 添加环境变量
vim /etc/profile export PATH=$PATH:/usr/local/mysql/bin export MYSQL_PS1="(u@h:p)[d]>" source /etc/profile
5. 初始化MySQL
mysqld --defaults-file=/etc/my.cnf --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data --initialize-insecure cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld vim /etc/init.d/mysqld #修改配置 basedir=/usr/local/mysql datadir=/data/mysql_data
6. 启动MySQL并进行安全配置
/etc/init.d/mysqld start
/usr/local/mysql/bin/mysql_secure_installation