安装包mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
1.更改selinux为disable，关闭防火墙
vim /etc/sysconfig/selinux
SELINUX = disabled
查看防火墙状态
firewall-cmd --state
停止firewall
systemctl stop firewalld.service
禁止firewall开机启动
systemctl disable firewalld.service
getenforce
setenforce 0- 修改系统的软硬限制来防止系统错误的发生，编辑/etc/security/limits.conf
* soft nproc 65535 * hard nproc 65535 * soft nofile 65535 * hard nofile 65535 - 建好Mysql用户和所属组
groupadd mysql useradd mysql -s /sbin/nologin -M - 解压，做软链接
ln -s /usr/local/src/mysql-5.7.24-linux-glibc2.12-x86_64 /usr/local/mysql chown mysql:mysql -R mysql5.创建数据库目录，授予权限
mkdir -p /data/mysql chown mysql:mysql -R /data/mysql6.初始化数据库，指定data目录
yum install -y perl-Data-Dumper.x86_64 yum install libaio* 如果之前已经安装过数据库 mysqld --no-defaults --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql 记住密码 ···7 .启动
scp support-files/mysql.server /etc/init.d/mysqld vim /etc/init.d/mysqld datadir = /data/mysql /etc/init.d/mysql start8.常用mysql命令
修改密码 alter user user() identified by "123456"; flush privileges; 开启远程登录 GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; flush privileges; 查看mysql 的用户名密码 select host,user,authentication_string from mysql.user;
my.cnf（16G）
[client]
port = 3306
socket = /tmp/mysql.sock
[mysql]
auto-rehash
prompt = "\\u@\\h \\d>"
[mysqld]
user = mysql
port = 3306
basedir = /usr/local/mysql
datadir = /data/mysql/
socket = /tmp/mysql.sock
pid-file = /data/mysql/mysql.pid
character-set-server = utf8
collation-server = utf8_general_ci
skip_name_resolve = 1
skip-external-locking
open_files_limit = 65535
back_log = 600
max_connections = 3000
max_connect_errors = 600000
table_open_cache = 5120
table_definition_cache = 1024
table_open_cache_instances= 64
thread_stack = 512k
external-locking =FALSE
max_allowed_packet = 512M
sort_buffer_size = 16M
join_buffer_size = 16M
thread_cache_size = 300
query_cache_size = 64M
query_cache_limit = 4M
query_cache_min_res_unit = 2k
default_storage_engine = InnoDB
explicit_defaults_for_timestamp = 1
#skip-networking
interactive_timeout = 1800
wait_timeout = 1800
tmp_table_size = 32M
max_heap_table_size = 256M
slow_query_log = 1
slow_query_log_file = /data/mysql/mysql-slow.log
long_query_time = 2
log_error = /data/mysql/error.log
server-id = 3306101
log-bin = /data/mysql/mysql-bin
sync_binlog = 1
expire_logs_days = 14
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates
binlog_format = row
relay_log_recovery = 1
relay_log_purge = 1
relay-log = /data/mysql/relay-bin
relay-log-info-file = /data/mysql/relay-log.info
binlog_cache_size = 16M
max_binlog_cache_size = 8M
max_binlog_size = 512M
key_buffer_size = 32M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 32M
lock_wait_timeout = 3600
#explict_defaults_for_timestamp = 1
#explict_defaults_for_timestamp=1
lower_case_table_names = 1
slave-skip-errors = 1032,1062
sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
transaction_isolation = REPEATABLE-READ
innodb_buffer_pool_size = 1G
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path = ibdata1:12M:autoextend
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 20M
innodb_log_file_size = 128M
innodb_log_files_in_group = 3
#innodb_max_undo_log_size = 4G
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_neighbors = 0
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_purge_threads = 4
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 90
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 120
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 4G
#internal_tmp_disk_storage_engine = InnoDB
[mysqldump]
quick
max_allowed_packet = 32Mmysql 5.6
1.下载合适版本（官网5.7，我们学习用5.1）；免编译的二进制包。
2.解压 tar
3.创建运行mysql的账户 不需要登陆 可不创建家目录。useradd -s /sbin/nologin -M mysql
4.移动并重命名。mv mysql.......... /usr/local/mysql
5.查看mysql文件 ls /usr/local/mysql
6.进入 cd /usr/local/mysql
7.创建存放mysql数据的文件夹并更改权限 mkdir -p /data/mysql; chown -R mysql /data/mysql
7.初始化库 ./scripts/mysql_install_db --user=mysql --datadir=/data/mysql; 初始化完成就有两个“ok”。也可以用命令 echo $? 检测，如果输出为0 表示成功。
8.将配置文件放在相应的目录里面。配置文件存放目录 cd support-files/ ；先将my-large.cnf拷贝到etc/my.cnf下并覆盖之前的配置文件： cp my-large.cnf etc/my.cnf。打开my-large.cnf:vim my-large.cnf。
9.拷贝启动脚本。加入到系统服务列表中并启动服务。[cp mysql.server /etc/init.d/mysqld];[vim ！$ ; datadir=/data/mysql ];[chkconfig -add mysql ];[chkconfig mysql on ];[ /etc/init.d/mysqld start]
初始化
./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/data/mysql
设置数据库密码
UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
flush privileges;
开启远程登录
grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
创建账号授权
CREATE USER 'xxx'@'%' IDENTIFIED BY '123456';
grant all privileges on xxx.* to 'xxx'@'%' identified by '123456' with grant option;
flush privileges;
创建uft-8的数据库
create database `xxx` character set utf8 collate utf8_general_ci;
导入数据
mysqldump -uroot -p > 20181105_dqws_pro.sql
[client]
port = 3306
socket = /tmp/mysql.sock
default-character-set = utf8mb4
[mysqld]
port = 3306
socket = /tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /data/mysql/
#log_error = /data/mysql/hz-devops-test-02.err
#pid-file = /data/mysql/hz-devops-test-02.pid
tmpdir = /data/mysql/tmp
character-set-server = utf8
collation-server = utf8_general_ci
user = mysql
bind-address = 0.0.0.0
server_id = 107
#skip-networking
back_log = 600
thread_concurrency = 64
max_connections = 3000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 5120
max_allowed_packet = 512M
binlog_cache_size = 16M
max_heap_table_size = 4096M
tmp_table_size = 1024M
read_buffer_size = 16M
read_rnd_buffer_size = 32M
sort_buffer_size = 16M
join_buffer_size = 16M
key_buffer_size = 256M
thread_cache_size = 64
query_cache_size = 8M
query_cache_limit = 2M
ft_min_word_len = 4
log_bin = mysql-bin
binlog_format = mixed
expire_logs_days = 30
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /data/mysql/mysql-slow.log
performance_schema = 0
explicit_defaults_for_timestamp
#lower_case_table_names = 1
skip-external-locking
sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 1G
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 20M
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 = 32M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
interactive_timeout = 1800
wait_timeout = 1800
[mysqldump]
quick
max_allowed_packet = 512M
[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 4M
write_buffer = 4M
log-bin = /data/mysql/mysql-bin
max_binlog_size = 500M
binlog-do-db=xxx
binlog-ignore-db=mysql
binlog_format = mixed
expire_logs_days = 30
sync_binlog = 1
binlog_checksum=crc32
######
relay_log =/data/mysql/log/relaylog
relay_log_index =/data/mysql/log/relay.index
relay_log_info_file =/data/mysql/log/relay-log.info
#####
# slave
slave_load_tmpdir =/data/mysql/tmp
slave_skip_errors = all
skip-slave-star