系统环境：
[root@db01 ~]# cat /etc/redhat-release;uname -r;uname -m
CentOS release 6.8 (Final)
2.6.32-642.el6.x86_64
x86_64
[root@db01 ~]# ifconfig eth0|awk -F "[ :]+" 'NR==2{print $4}'
10.0.0.8
[root@db01 ~]# ifconfig eth1|awk -F "[ :]+" 'NR==2{print $4}'
172.16.1.8
[root@db01 ~]# /etc/init.d/iptables status
iptables: Firewall is not running.
[root@db01 ~]# getenforce
Disabled
[root@db01 ~]# free -h
total used free shared buffers cached
Mem: 1.8G 129M 1.7G 192K 10M 30M
-/+ buffers/cache: 88M 1.7G
Swap: 2.9G 0B 2.9G
[root@db01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 26G 4.5G 20G 19% /
tmpfs 931M 0 931M 0% /dev/shm
/dev/sda1 976M 38M 888M 5% /boot
/dev/sdb1 50G 52M 47G 1% /data
安装前期：
#卸载系统自带的Mysql
[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
[root@db01 ~]# useradd -u 800 -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
[root@db01 ~]# mkdir /apps /data/3306/{data,errlog,binlog,slowlog,relaylog} -p
[root@db01 ~]# ls -ld /apps/
drwxr-xr-x 2 root root 4096 Nov 4 19:18 /apps/
[root@db01 ~]# tree /data/
/data/
|-- 3306
| |-- binlog
| |-- data
| |-- errlog
| |-- relaylog
| `-- slowlog
`-- lost+found
7 directories, 0 files
#上传软件，准备安装mysql
[root@db01 ~]# mkdir tools
[root@db01 ~]# cd tools/
[root@db01 tools]# rz
[root@db01 tools]# ll mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
-rw-r--r-- 1 root root 641127384 Oct 28 17:20 mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
[root@db01 tools]# tar xf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz -C /apps/
[root@db01 tools]# mv /apps/mysql-5.7.20-linux-glibc2.12-x86_64/ /apps/mysql-5.7.20
[root@db01 tools]# ln -sv /apps/mysql-5.7.20/ /apps/mysql
`/apps/mysql' -> `/apps/mysql-5.7.20/'
[root@db01 tools]# chown -R mysql:mysql /apps/mysql/
[root@db01 tools]# ls -ld /apps/mysql/
drwxr-xr-x 9 mysql mysql 4096 Nov 4 19:24 /apps/mysql/
配置my.cnf文件
[root@db01 ~]# vim /data/3306/my.cnf
[client]
port=3306
socket=/data/3306/mysql.sock
[mysql]
no_auto_rehash
[mysqld]
######Basic Parameters
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=utf8
skip_character_set_client_handshake=1
######Server id
server_id=1
######Log Parameters
log_output=FILE
log_timestamps=system
binlog_format=row
expire_logs_days=15
max_binlog_size=2M
binlog_cache_size=2M
max_binlog_cache_size=4M
sync_binlog=1
master_info_repository=table
binlog_rows_query_log_events=on
log_bin_trust_function_creators=1
log_bin=/data/3306/binlog/mysql_bin
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/mysql_slow.log
log-error=/data/3306/errlog/mysql_error.log
######Optimization Settings######
autocommit=on
skip_external_locking=on
#skip_name_resolve=on
max_connections=800
max_connect_errors=1000
default-storage-engine=INNODB
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 settings########
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
binlog_gtid_simple_recovery=1
log_timestamps=system
#transaction_write_set_extraction=MURMUR32
show_compatibility_56=on
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）
安装后期
#更改/data/3306/的属主/组和/data/3306/mysqld文件的权限为700
[root@db01 ~]# chown -R mysql:mysql /data/3306/
[root@db01 ~]# chmod 700 /data/3306/mysqld
[root@db01 ~]# ll /data/3306/mysqld
-rwx------ 1 mysql mysql 1603 Nov 4 19:36 /data/3306/mysqld
#创建错误日志
[root@db01 ~]# grep "errlog" /data/3306/my.cnf
log-error=/data/3306/errlog/mysql_error.log
[root@db01 ~]# touch /data/3306/errlog/mysql_error.log
[root@db01 ~]# chown mysql:mysql /data/3306/errlog/mysql_error.log
[root@db01 ~]# ll /data/3306/errlog/mysql_error.log
-rw-r--r-- 1 mysql mysql 0 Nov 4 19:38 /data/3306/errlog/mysql_error.log
#配置环境变量
[root@db01 ~]# echo "PATH=/apps/mysql/bin:$PATH" >>/etc/bashrc
[root@db01 ~]# source /etc/bashrc
[root@db01 ~]# echo $PATH
/apps/mysql/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
#初始化mysql数据库
[root@db01 ~]# mysqld --defaults-file=/data/3306/my.cnf --user=mysql --basedir=/apps/mysql --datadir=/data/3306/data/ --initialize
[root@db01 ~]# echo $?
0
##启动mysql服务，并记录下实时密码
[root@db01 ~]# /data/3306/mysqld start
Start MySQL [3306] [ OK ]
[root@db01 ~]# netstat -lntup|grep 3306
tcp 0 0 172.16.1.8:3306 0.0.0.0:* LISTEN 3307/mysqld
[root@db01~]# grep -i "root@localhost" /data/3306/errlog/mysql_error.log
2018-11-14T10:08:51.243406+08:00 1 [Note] A temporary password is generated for root@localhost: w!toDKSy86ki
2018-11-14T10:08:59.153250+08:00 1 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-11-14T10:08:59.153443+08:00 1 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-11-14T10:09:20.953187+08:00 0 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-11-14T10:09:20.953374+08:00 0 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
#修改mysql超级用户root的密码
#因为随机密码中有特殊字符"!"，不能用以下修改密码的方式和登录服务的方式
#修改密码的方式：mysqladmin -uroot -pw!toDKSy86ki password chenliang -S /data/3306/mysql.sock
#登录服务的方式：mysql -uroot -pw!toDKSy86ki -S /data/3306/mysql.sock
#需要用以下的方式来修改密码
[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> 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> flush privileges;
Query OK, 0 rows affected (0.01 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