MySQL 5.7.22 二进制安装
一、到官网下载mysql-5.7.22二进制包
二、创建mysql用户：
useradd mysql -s /sbin/nologin -M三、解压mysql-5.7.22-el7-x86_64.tar.gz ：
tar xf mysql-5.7.22-el7-x86_64.tar.gz && mv mysql-5.7.22-el7-x86_64.tar.gz /opt/mysql 四、创建相关目录：
cd /opt/mysql mkdir {data,logs,etc} mkidr logs/binlog五、修改权限：
cd /opt/ && chown -R mysql.mysql mysql六、初始化数据库：
cd /opt/mysql
./bin/mysqld --initialize --user=mysql --basedir=/opt/mysql --datadir=/opt/mysql/data
记住最后提示的密码七、修改my.cnf文件：
echo > /etc/my.cnf vi my.cnf 加入文档最后的内容八、配置mysql服务：
cd /opt/mysql && cp support-files/mysql.server /etc/init.d/mysqld
修改权限chmod +x /etc/init.d/mysqld
编辑mysqld加入basedir=/opt/mysql datadir=/opt/mysql/data
chkconfig --add mysqld九、启动mysql服务：
service mysqld start
此时会报日志错误：Starting MySQL.2018-07-26T14:24:53.192088Z mysqld_safe error: log-error set to '/opt/mysql/logs/mysql-error.log', however file don't exists. Create writable for user 'mysql'.
ERROR! The server quit without updating PID file (/opt/mysql/data/mysql.pid).
原因是找不到logs下的mysql-error.log文件
我们手动创建一个
touch /opt/mysql/logs/mysql-error.log&&chown mysql.mysql mysql-error.log
再执行service mysqld start 即可十、配置环境变量：
cd &&vi .bash_profile 在PATH后加上/opt/mysql/bin，保存退出
执行source .bash_profile十一、登录数据库，修改密码：
启动服务后，执行mysql -uroot -p 输入初始化时的密码
执行show databases; 会报错ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
执行set PASSWORD=PASSWORD('123456'); flush privileges 修改密码
退出后用新密码可以重新登录至此，Mysql-5.7.22二进制方式安装完成
my.cnf可选内容
[mysqld]
#sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
basedir=/opt/mysql #介质目录
datadir=/opt/mysql/data #数据目录
port=3306 #端口
pid-file = /opt/mysql/data/mysql.pid #进程id
user = mysql #启动用户
socket=/opt/mysql/data/mysql.sock #sock文件地址
bind-address = 0.0.0.0 #绑定ip 这里表示绑定所有ip
server-id = 1 #用于复制环境钟标识实例,这个在复制环境里唯一
character-set-server = utf8 #服务端默认字符集,很重要,错误设置会出现乱码
max_connections = 1000 #允许客户端并发连接的最大数量
max_connect_errors = 6000 #如果客户端尝试连接的错误数量超过这个参数设置的值，则服务器不再接受新的客户端连接。
open_files_limit = 65535 #操作系统允许MySQL服务打开的文件数量。
table_open_cache = 128 #所有线程能打开的表的数量
max_allowed_packet = 4M #网络传输时单个数据包的大小。
back_log= 300
binlog_cache_size = 4M
max_heap_table_size = 8M
tmp_table_size = 16M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 4M
thread_cache_size = 8
query_cache_type = 1
query_cache_size = 8M
query_cache_limit = 2M
ft_min_word_len = 4
log_bin = mysql-bin
binlog_format = mixed
expire_logs_days = 30
log_error = /opt/mysql/logs/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /opt/mydql/logs/mysql-slow.log
performance_schema = 0
explicit_defaults_for_timestamp
#lower_case_table_names = 1
skip-external-locking
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 64M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
interactive_timeout = 28800
wait_timeout = 28800
#lower_case_table_names = 1
skip-external-locking
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 64M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
interactive_timeout = 28800
wait_timeout = 28800
[client]
port=3306
socket=/opt/mysql/data/mysql.sock
[mysql]
no-auto-rehash
#default-character-set=utf8
safe-updates
socket=/opt/mysql/data/mysql.sock
[mysqldump]
quick
max_allowed_packet = 32M
[mysqlhotcopy]
interactive-timeout
[mysql_safe]
open-files-limit = 8192