2.1 部署前注意事项
所有MySQL的部署方法与2.2章节的大至一样，需要修改的如下所示：
01：server_id不能相同
02：相应日志文件的文件名不要相同，例如
slow_query_log_file=/data/3306/slowlog/db01_mysql_slow.log 这是db01服务器
slow_query_log_file=/data/3306/slowlog/db02_mysql_slow.log 这是db02服务器
slow_query_log_file=/data/3306/slowlog/db03_mysql_slow.log 这是db03服务器
slow_query_log_file=/data/3306/slowlog/db03_mysql_slow.log 这是db04服务器
2.2 前期安装步骤
#卸载已存在的mysql插件
[root@db01 ~]# rpm -qa|grep mysql
mysql-libs-5.1.73-7.el6.x86_64
[root@db01 ~]# rpm -e --nodeps mysql-libs-5.1.73-7.el6.x86_64
[root@db01 ~]# rpm -qa|grep mysql
[root@db01 ~]#
#创建mysql用户，UID为800，不创建家目录，不让其登录
[root@db01 ~]# useradd -u800 -s /sbin/nologin -M mysql
[root@db01 ~]# id mysql
uid=800(mysql) gid=800(mysql) groups=800(mysql)
#创建相应的目录（/apps /data/3306/{data,errlog,relaylog,binlog,slowlog}）
[root@db01 ~]# mkdir /apps /data/3306/{data,errlog,binlog,relaylog,slowlog} -p
[root@db01 ~]# ls -ld /apps/
drwxr-xr-x 2 root root 4096 Nov 14 09:33 /apps/
[root@db01 ~]# tree /data/
/data/
|-- 3306
| |-- binlog
| |-- data
| |-- errlog
| |-- relaylog
| `-- slowlog
`-- lost+found
7 directories, 0 files
#创建tools目录，上传mysql软件包进行安装
[root@db01 ~]# mkdir tools
[root@db01 ~]# cd tools/
[root@db01 tools]# rz <==该命令如果没有，可以用yum install lrzsz -y来安装
[root@db01 tools]# ll mysql-5.7.19-linux-glibc2.12-x86_64_.tar.gz
-rw-r--r-- 1 root root 640650826 Sep 27 16:24 mysql-5.7.19-linux-glibc2.12-x86_64_.tar.gz
[root@db01 tools]# tar xf mysql-5.7.19-linux-glibc2.12-x86_64_.tar.gz -C /apps/
[root@db01 tools]# mv /apps/mysql-5.7.19-linux-glibc2.12-x86_64/ /apps/mysql-5.7.19
[root@db01 tools]# ln -sv /apps/mysql-5.7.19/ /apps/mysql
`/apps/mysql' -> `/apps/mysql-5.7.19/'
[root@db01 tools]# chown -R mysql:mysql /apps/mysql/
2.3 配置my.cnf文件
[root@db01 tools]# cat /data/3306/my.cnf
[client]
port=3306
socket=/data/3306/mysql.sock
[mysql]
no-auto-rehash
[mysqld]
###### BASIC CONFIGURATION
user=mysql
port=3306
basedir=/apps/mysql
datadir=/data/3306/data
socket=/data/3306/mysql.sock
pid_file=/data/3306/mysql.pid
character_set_server=utf8mb4
skip_character_set_client-handshake=1
###### SERVER ID CONFIGURATION
server_id=11
###### Gtid REPLICATION
gtid_mode=on
log_slave_updates=1
enforce_gtid_consistency=1
binlog_gtid_simple_recovery=1
slave_parallel_type=LOGICAL_CLOCK
slave_parallel_workers=4
slave_preserve_commit_order=1
plugin_dir=/apps/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
rpl_semi_sync_master_wait_point=AFTER_SYNC
rpl_semi_sync_master_wait_for_slave_count=1
###### LOG CONFIGURATION
log_output=FILE
binlog_format=row
expire_logs_days=15
max_binlog_size=1G
binlog_cache_size=1G
max_binlog_cache_size=2048M
sync_binlog=1
master_info_repository=table
log_bin=/data/3306/binlog/db01_mysql_bin
binlog_rows_query_log_events=on
log_bin_trust_function_creators=1
relay-log=/data/3306/relaylog/db01_relay_bin
relay_log_purge=off
relay_log_recovery=1
relay_log_info_repository=table
log_slow_admin_statements=1
slow_query_log=on
long_query_time=2
log_queries_not_using_indexes=on
slow_query_log_file=/data/3306/slowlog/db01_mysql_slow.log
log-error=/data/3306/errlog/db01_mysql_error.log
###### Basic optimization ##################################
autocommit=on
skip_external_locking=on
skip_name_resolve=off
max_connections=800
max_connect_errors=1000
transaction_isolation=READ-COMMITTED
explicit_defaults_for_timestamp=1
sort_buffer_size=32M
join_buffer_size=128M
tmp_table_size=72M
max_allowed_packet=16M
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=16M
read_rnd_buffer_size=32M
query_cache_type=1
query_cache_size=1M
table_open_cache=2000
thread_cache_size=768
myisam_max_sort_file_size=10G
myisam_sort_buffer_size=135M
key_buffer_size=32M
read_buffer_size=8M
read_rnd_buffer_size=4M
back_log=1024
#flush_time=0
open_files_limit=65536
table_definition_cache=1400
#binlog_row_event_max_size=8K
#sync_master_info=10000
#sync_relay_log=10000
#sync_relay_log_info=10000
###### INNODB ENGINE CONFIGURATION
default-storage-engine=INNODB
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_buffer_pool_size = 500M
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_flush_method = O_DIRECT
innodb_log_file_size = 200M
innodb_log_files_in_group = 2
innodb_log_buffer_size = 16M
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_flush_neighbors = 1
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 = 64M
innodb_flush_log_at_trx_commit=1
innodb_autoextend_increment=64
innodb_concurrency_tickets=5000
innodb_old_blocks_time=1000
innodb_open_files=65536
innodb_stats_on_metadata=0
innodb_file_per_table=1
innodb_checksum_algorithm=0
innodb_data_file_path=ibdata1:200M;ibdata2:200M;ibdata3:200M:autoextend:max:5G
innodb_temp_data_file_path = ibtmp1:200M:autoextend:max:20G
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_purge_rseg_truncate_frequency = 128
log_timestamps=system
#transaction_write_set_extraction=MURMUR32
show_compatibility_56=on
2.4 配置mysql的启动脚本
[root@db01 ~]# vim /data/3306/mysqld
把 http://blog.51cto.com/11576296/2323633 的内容拷贝至文件中，保存并退出
说明：
01：该脚本中停用mysql的方法为：mysqladmin -uroot -pchenliang -S /data/3306/mysql.sock shutdown
02：如果你的mysql服务的root用户密码设置的不是chenliang
03：请你更改/data/3306/mysqld脚本中的Pass变量的值（与你的root用户的密码一至）
2.5 后期安装步骤
# 配置mysql的启动脚本
#创建错误日志（看my.cnf文件中的配置）
#更改/data/3306/目录下所有文件的属主/组为mysql
#更改/data/3306/mysqld的权限为700
[root@db01 tools]# grep "errlog" /data/3306/my.cnf
log-error=/data/3306/errlog/db01_mysql_error.log
[root@db01 tools]# touch /data/3306/errlog/db01_mysql_error.log
[root@db01 tools]# ll /data/3306/errlog/db01_mysql_error.log
-rw-r--r-- 1 root root 0 Nov 14 10:02 /data/3306/errlog/db01_mysql_error.log
[root@db01 tools]# chown -R mysql:mysql /data/3306/
[root@db01 tools]# chmod 700 /data/3306/mysqld
[root@db01 tools]# ll /data/3306/mysqld
-rwx------ 1 mysql mysql 1603 Nov 14 09:57 /data/3306/mysqld
#配置PATH环境变量
[root@db01 tools]# echo "PATH=/apps/mysql/bin:$PATH" >>/etc/bashrc
[root@db01 tools]# source /etc/bashrc
[root@db01 tools]# echo $PATH
/apps/mysql/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
#初始化mysql服务、启动mysql服务、更改密码
[root@db01 tools]# mysqld --defaults-file=/data/3306/my.cnf --user=mysql --basedir=/apps/mysql --datadir=/data/3306/data/ --initialize
[root@db01 tools]# echo $?
0
[root@db01 tools]# /data/3306/mysqld start
Start MySQL [3306] [ OK ]
[root@db01 tools]# lsof -i :3306
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
mysqld 27039 mysql 31u IPv6 32927 0t0 TCP *:mysql (LISTEN)
[root@db01 tools]# grep -i "password" /data/3306/errlog/db01_mysql_error.log
2018-11-14T10:08:51.243406+08:00 1 [Note] A temporary password is generated for root@localhost: w!toDKSy86ki
#因为随机密码中有特殊字符"!"，所以需用以下这种方式登录，
#如果用mysql -uroot -pw!toDKSy86ki -S /data/3306/mysql.sock登录，会提示如下错误
#-bash: !toDKSy86ki: event not found
[root@db01 tools]# mysql -uroot -p -S /data/3306/mysql.sock
Enter password:
mysql>
mysql> alter user 'root'@'localhost' identified by 'chenliang';
Query OK, 0 rows affected (5.02 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
mysql> select user,host,authentication_string from mysql.user where user='root' and host='localhost';
+------+-----------+-------------------------------------------+
| user | host | authentication_string |
+------+-----------+-------------------------------------------+
| root | localhost | *D072DB593E2E7B068E887A452EB1DB3981A5D844 |
+------+-----------+-------------------------------------------+
1 row in set (0.00 sec)
mysql> exit
Bye
[root@db01 tools]# mysql -uroot -pchenliang -S /data/3306/mysql.sock -e "show databases;"
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
#加入开机自启动
[root@db01 tools]# echo -ne "\n#Boot start mysql service. USER:chenliang Time:2018-10-23\n/data/3306/mysqld start\n" >>/etc/rc.local
[root@db01 tools]# tail -2 /etc/rc.local
#Boot start mysql service. USER:chenliang Time:2018-10-23
/data/3306/mysqld start