羡慕别人的光辉，仰慕他人的成就，你却没有看到别人的艰辛，是一件很可悲的事，又有谁会把自己的痛苦流露给他人呢，我承认成功有很多的机缘巧合，但是努力绝对是不可缺少的过程！
——————————————-前言：送给深夜默默努力的你
今天的学习
MySQL/mysql

rpm包 yum install mysql-server
yum install mysql-client
部署简单但是目录固化

二进制部署部署麻烦但是目录定制化
2.如何安装
1.Download and Check MD5

[root@sht-sgmhadoopnn-01 ~]# cd /usr/local
[root@sht-sgmhadoopnn-01 local]# wget https://downloads.mariadb.com/archives/mysql-5.6/mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
[root@sht-sgmhadoopnn-01 local]# wget https://downloads.mariadb.com/archives/mysql-5.6/mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz.md5[root@sht-sgmhadoopnn-01 local]# cat mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz.md5
61affe944eff55fcf51b31e67f25dc10  mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz[root@sht-sgmhadoopnn-01 local]# md5sum mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
61affe944eff55fcf51b31e67f25dc10  mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz

网盘软件文件夹
补充: java部署

[root@hadoop000 local]# mkdir -p /usr/java
[root@hadoop000 local]# mv jdk-8u45-linux-x64.gz /usr/java/
[root@hadoop000 local]#
[root@hadoop000 local]# cd /usr/java
[root@hadoop000 java]# ll
total 169212
-rw-r--r--. 1 root root 173271626 May  6 13:20 jdk-8u45-linux-x64.gz
[root@hadoop000 java]#
坑:
[root@hadoop000 java]# ll
total 169216
drwxr-xr-x. 8 uucp  143      4096 Apr 11  2015 jdk1.8.0_45
-rw-r--r--. 1 root root 173271626 May  6 13:20 jdk-8u45-linux-x64.gz
[root@hadoop000 java]# chown -R root:root jdk1.8.0_45/[root@hadoop000 java]# vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0_45export PATH=$JAVA_HOME/bin:$RZDATA_HOME/bin:$PATH
"/etc/profile" 91L, 1994C written
[root@hadoop000 java]# which java
/usr/bin/java
[root@hadoop000 java]# source /etc/profile
[root@hadoop000 java]#
[root@hadoop000 java]#
[root@hadoop000 java]# which java
/usr/java/jdk1.8.0_45/bin/java
[root@hadoop000 java]# java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
[root@hadoop000 java]#

2.Check isnot install

[root@sht-sgmhadoopnn-01 local]# ps -ef|grep mysqld
root      2493  2423  0 19:48 pts/3    00:00:00 grep mysqld
[root@sht-sgmhadoopnn-01 local]# rpm -qa |grep -i mysql3.tar and mv
[root@sht-sgmhadoopnn-01 local]# tar xzvf mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
[root@sht-sgmhadoopnn-01 local]# mv mysql-5.6.23-linux-glibc2.5-x86_64 mysql4.Create group and user
[root@sht-sgmhadoopnn-01 local]# groupadd -g 101 dba
[root@sht-sgmhadoopnn-01 local]# useradd -u 514 -g dba -G root -d /usr/local/mysql mysqladmin
[root@sht-sgmhadoopnn-01 local]# id mysqladmin
uid=514(mysqladmin) gid=101(dba) groups=101(dba),0(root)

if user mysqladmin is existing,please execute the following command of usermod.

##[root@sht-sgmhadoopnn-01 local]# usermod -u 514 -g dba -G root -d /usr/local/mysql mysqladmin

copy 环境变量配置文件至mysqladmin用户的home目录中,为了以下步骤配置个人环境变量

[root@sht-sgmhadoopnn-01 local]# cp /etc/skel/.* /usr/local/mysql
cp: omitting directory `/etc/skel/.'
cp: omitting directory `/etc/skel/..'
cp: omitting directory `/etc/skel/.mozilla'5.Create /etc/my.cnf(640)
#defualt start: /etc/my.cnf->/etc/mysql/my.cnf->SYSCONFDIR/my.cnf->$MYSQL_HOME/my.cnf-> --defaults-extra-file->~/my.cnf
[root@sht-sgmhadoopnn-01 mysql]# cd /etc/
[root@sht-sgmhadoopnn-01 etc]# touch my.cnf
[root@sht-sgmhadoopnn-01 etc]# vi my.cnf
[client]
port            = 3306
socket          = /usr/local/mysql/data/mysql.sock[mysqld]
port            = 3306
socket          = /usr/local/mysql/data/mysql.sockskip-external-locking
key_buffer_size = 256M
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 4M
query_cache_size= 32M
max_allowed_packet = 16M
myisam_sort_buffer_size=128M
tmp_table_size=32Mtable_open_cache = 512
thread_cache_size = 8
wait_timeout = 86400
interactive_timeout = 86400
max_connections = 600

Try number of CPU’s*2 for thread_concurrency

thread_concurrency = 32#isolation level and default engine
default-storage-engine = INNODB
transaction-isolation = READ-COMMITTEDserver-id  = 1
basedir     = /usr/local/mysql
datadir     = /usr/local/mysql/data
pid-file     = /usr/local/mysql/data/hostname.pid#open performance schema
log-warnings
sysdate-is-nowbinlog_format = MIXED
log_bin_trust_function_creators=1
log-error  = /usr/local/mysql/data/hostname.err
log-bin=/usr/local/mysql/arch/mysql-bin
#other logs
#general_log =1
#general_log_file  = /usr/local/mysql/data/general_log.err
#slow_query_log=1
#slow_query_log_file=/usr/local/mysql/data/slow_log.err#for replication slave
#log-slave-updates
#sync_binlog = 1#for innodb options
innodb_data_home_dir = /usr/local/mysql/data/
innodb_data_file_path = ibdata1:500M:autoextend
innodb_log_group_home_dir = /usr/local/mysql/arch
innodb_log_files_in_group = 2
innodb_log_file_size = 200Minnodb_buffer_pool_size = 2048M
innodb_additional_mem_pool_size = 50M
innodb_log_buffer_size = 16Minnodb_lock_wait_timeout = 100
#innodb_thread_concurrency = 0
innodb_flush_log_at_trx_commit = 1
innodb_locks_unsafe_for_binlog=1#innodb io features: add for mysql5.5.8
performance_schema
innodb_read_io_threads=4
innodb-write-io-threads=4
innodb-io-capacity=200
#purge threads change default(0) to 1 for purge
innodb_purge_threads=1
innodb_use_native_aio=on#case-sensitive file names and separate tablespace
innodb_file_per_table = 1
lower_case_table_names=1[mysqldump]
quick
max_allowed_packet = 16M[mysql]
no-auto-rehash[mysqlhotcopy]
interactive-timeout[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M修改:
innodb_buffer_pool_size = 1024M6.chown and chmod privileges and try first install
[root@sht-sgmhadoopnn-01 local]# chown  mysqladmin:dba /etc/my.cnf
[root@sht-sgmhadoopnn-01 local]# chmod  640 /etc/my.cnf
[root@sht-sgmhadoopnn-01 etc]# ll my.cnf
-rw-r----- 1 mysqladmin dba 2201 Aug 25 23:09 my.cnf[root@sht-sgmhadoopnn-01 local]# chown -R mysqladmin:dba /usr/local/mysql
[root@sht-sgmhadoopnn-01 local]# chmod -R 755 /usr/local/mysql
[root@sht-sgmhadoopnn-01 local]# su - mysqladmin
[mysqladmin@sht-sgmhadoopnn-01 ~]$ pwd
/usr/local/mysql

创建binlog文件

[mysqladmin@sht-sgmhadoopnn-01 ~]$ mkdir arch
[mysqladmin@sht-sgmhadoopnn-01 ~]$ scripts/mysql_install_db ###import
Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory #缺少libaio.so 包

###see version

[root@sht-sgmhadoopnn-01 local]# cat /proc/version
Linux version 2.6.18-164.11.1.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010[root@sht-sgmhadoopnn-01 local]# rpm -qa |grep gcc
libgcc-4.1.2-46.el5_4.2
libgcc-4.1.2-46.el5_4.2
[root@sht-sgmhadoopnn-01 local]# yum -y install libaio
Loaded plugins: fastestmirror
Determining fastest mirrors
base-tn54                                                                                              | 1.1 kB     00:00
tn-appv1                                                                                               |  951 B     00:00
updates-tn54                                                                                           |  951 B     00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package libaio.i386 0:0.3.106-3.2 set to be updated
---> Package libaio.x86_64 0:0.3.106-3.2 set to be updated
--> Finished Dependency ResolutionDependencies Resolved==============================================================================================================================Package                    Arch                       Version                            Repository                     Size
==============================================================================================================================
Installing:libaio                     i386                       0.3.106-3.2                        base-tn54                      19 klibaio                     x86_64                     0.3.106-3.2                        base-tn54                      19 kTransaction Summary
==============================================================================================================================
Install      2 Package(s)
Update       0 Package(s)
Remove       0 Package(s)         Total download size: 38 k
Downloading Packages:
(1/2): libaio-0.3.106-3.2.i386.rpm                                                                     |  19 kB     00:00
(2/2): libaio-0.3.106-3.2.x86_64.rpm                                                                   |  19 kB     00:00
------------------------------------------------------------------------------------------------------------------------------
Total                                                                                         452 kB/s |  38 kB     00:00
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running TransactionInstalling     : libaio                                                                                                 1/2 Installing     : libaio                                                                                                 2/2 Installed:libaio.i386 0:0.3.106-3.2                                    libaio.x86_64 0:0.3.106-3.2

Complete!

7.Again install

[mysqladmin@sht-sgmhadoopnn-01 ~]$ scripts/mysql_install_db  --user=mysqladmin --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
Installing MySQL system tables...2015-08-25 22:49:02 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-08-25 22:49:02 11713 [Note] InnoDB: Using atomics to ref count buffer pool pages
2015-08-25 22:49:02 11713 [Note] InnoDB: The InnoDB memory heap is disabled
2015-08-25 22:49:02 11713 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2015-08-25 22:49:02 11713 [Note] InnoDB: Memory barrier is not used
2015-08-25 22:49:02 11713 [Note] InnoDB: Compressed tables use zlib 1.2.3
2015-08-25 22:49:02 11713 [Note] InnoDB: Using Linux native AIO
2015-08-25 22:49:02 11713 [Note] InnoDB: Using CPU crc32 instructions
2015-08-25 22:49:02 11713 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2015-08-25 22:49:02 11713 [Note] InnoDB: Completed initialization of buffer pool
2015-08-25 22:49:02 11713 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2015-08-25 22:49:02 11713 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2015-08-25 22:49:02 11713 [Note] InnoDB: Database physically writes the file full: wait...
2015-08-25 22:49:03 11713 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
2015-08-25 22:49:07 11713 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
2015-08-25 22:49:12 11713 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2015-08-25 22:49:12 11713 [Warning] InnoDB: New log files created, LSN=45781
2015-08-25 22:49:12 11713 [Note] InnoDB: Doublewrite buffer not found: creating new
2015-08-25 22:49:12 11713 [Note] InnoDB: Doublewrite buffer created
2015-08-25 22:49:12 11713 [Note] InnoDB: 128 rollback segment(s) are active.
2015-08-25 22:49:12 11713 [Warning] InnoDB: Creating foreign key constraint system tables.
2015-08-25 22:49:12 11713 [Note] InnoDB: Foreign key constraint system tables created
2015-08-25 22:49:12 11713 [Note] InnoDB: Creating tablespace and datafile system tables.
2015-08-25 22:49:12 11713 [Note] InnoDB: Tablespace and datafile system tables created.
2015-08-25 22:49:12 11713 [Note] InnoDB: Waiting for purge to start
2015-08-25 22:49:12 11713 [Note] InnoDB: 5.6.23 started; log sequence number 0
2015-08-25 22:49:13 11713 [Note] Binlog end
2015-08-25 22:49:13 11713 [Note] InnoDB: FTS optimize thread exiting.
2015-08-25 22:49:13 11713 [Note] InnoDB: Starting shutdown...
2015-08-25 22:49:15 11713 [Note] InnoDB: Shutdown completed; log sequence number 1625977
OKFilling help tables...2015-08-25 22:49:15 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-08-25 22:49:15 11735 [Note] InnoDB: Using atomics to ref count buffer pool pages
2015-08-25 22:49:15 11735 [Note] InnoDB: The InnoDB memory heap is disabled
2015-08-25 22:49:15 11735 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2015-08-25 22:49:15 11735 [Note] InnoDB: Memory barrier is not used
2015-08-25 22:49:15 11735 [Note] InnoDB: Compressed tables use zlib 1.2.3
2015-08-25 22:49:15 11735 [Note] InnoDB: Using Linux native AIO
2015-08-25 22:49:15 11735 [Note] InnoDB: Using CPU crc32 instructions
2015-08-25 22:49:15 11735 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2015-08-25 22:49:15 11735 [Note] InnoDB: Completed initialization of buffer pool
2015-08-25 22:49:15 11735 [Note] InnoDB: Highest supported file format is Barracuda.
2015-08-25 22:49:15 11735 [Note] InnoDB: 128 rollback segment(s) are active.
2015-08-25 22:49:15 11735 [Note] InnoDB: Waiting for purge to start
2015-08-25 22:49:15 11735 [Note] InnoDB: 5.6.23 started; log sequence number 1625977
2015-08-25 22:49:15 11735 [Note] Binlog end
2015-08-25 22:49:15 11735 [Note] InnoDB: FTS optimize thread exiting.
2015-08-25 22:49:15 11735 [Note] InnoDB: Starting shutdown...
2015-08-25 22:49:17 11735 [Note] InnoDB: Shutdown completed; log sequence number 1625987
OKTo start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your systemPLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:./bin/mysqladmin -u root password 'new-password'./bin/mysqladmin -u root -h sht-sgmhadoopnn-01 password 'new-password'Alternatively you can run:./bin/mysql_secure_installationwhich will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.See the manual for more instructions.You can start the MySQL daemon with:cd . ; ./bin/mysqld_safe &You can test the MySQL daemon with mysql-test-run.plcd mysql-test ; perl mysql-test-run.plPlease report any problems at http://bugs.mysql.com/The latest information about MySQL is available on the web athttp://www.mysql.comSupport MySQL by buying support/licenses at http://shop.mysql.com
New default config file was created as ./my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settingsWARNING: Default config file /etc/my.cnf exists on the system
This file will be read by default by the MySQL server
If you do not want to use this, either remove it, or use the
--defaults-file argument to mysqld_safe when starting the server8.Configure mysql service and boot auto start
[root@sht-sgmhadoopnn-01 ~]# cd /usr/local/mysql
#将服务文件拷贝到init.d下，并重命名为mysql
[root@sht-sgmhadoopnn-01 mysql]# cp support-files/mysql.server /etc/rc.d/init.d/mysql
#赋予可执行权限
[root@sht-sgmhadoopnn-01 mysql]# chmod +x /etc/rc.d/init.d/mysql
#删除服务
[root@sht-sgmhadoopnn-01 mysql]# chkconfig --del mysql
#添加服务
[root@sht-sgmhadoopnn-01 mysql]# chkconfig --add mysql
[root@sht-sgmhadoopnn-01 mysql]# chkconfig  mysql on
[root@sht-sgmhadoopnn-01 mysql]# vi /etc/rc.local
#!/bin/sh
#

This script will be executed after all the other init scripts.

You can put your own initialization stuff in here if you don’t

want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

su - mysqladmin -c “/etc/init.d/mysql start --federated”

9.Start mysql and to view process and listening

[root@sht-sgmhadoopnn-01 mysql]# su - mysqladmin
[mysqladmin@sht-sgmhadoopnn-01 ~]$ pwd
/usr/local/mysql
[mysqladmin@sht-sgmhadoopnn-01 ~]$ rm -rf my.cnf
[mysqladmin@sht-sgmhadoopnn-01 ~]$ mysqld_safe &
[1] 11802
[mysqladmin@sht-sgmhadoopnn-01 ~]$ 150825 22:53:38 mysqld_safe Logging to '/usr/local/mysql/data/hostname.err'.
150825 22:53:38 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data/
150825 22:53:39 mysqld_safe mysqld from pid file /usr/local/mysql/data/hostname.pid ended
按回车 直接后台了[mysqladmin@sht-sgmhadoopnn-01 ~]$ [mysqladmin@sht-sgmhadoopnn-01 ~]$ ps -ef|grep mysqld
514       6247  6219  0 17:30 pts/1    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe
514       6902  6247  2 17:30 pts/1    00:00:01 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --log-error=/usr/local/mysql/data/hostname.err --pid-file=/usr/local/mysql/data/hostname.pid --socket=/usr/local/mysql/data/mysql.sock --port=3306
514       6927  6219  0 17:31 pts/1    00:00:00 grep mysqld[mysqladmin@sht-sgmhadoopnn-01 ~]$ netstat -tulnp | grep mysql
(Not all processes could be identified, non-owned process infowill not be shown, you would have to be root to see it all.)
tcp        0      0 :::3306                     :::*                        LISTEN      11541/mysqld        [root@sht-sgmhadoopnn-01 local]# service mysql status
MySQL running (21507)                                      [  OK  ]

10.Login mysql

[mysqladmin@sht-sgmhadoopnn-01 ~]$ mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.23-log MySQL Community Server (GPL)Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.00 sec)11.Update password and Purge usermysql> use mysql
Database changedmysql> select user,password,host from user;
+------+----------+-----------+
| user | password | host      |
+------+----------+-----------+
| root |          | localhost |
| root |          | hadoop000 |
| root |          | 127.0.0.1 |
| root |          | ::1       |
|      |          | localhost |
|      |          | hadoop000 |
+------+----------+-----------+

6 rows in set (0.00 sec)
用户密码能够允许外在的机器来访问

mysql> update user set password=password('123456') where user='root';mysql> select host,user,password from user;
+----------------+------+-------------------------------------------+
| host           | user | password                                  |
+----------------+------+-------------------------------------------+
| localhost      | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| sht-sgmhadoopnn-01 | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| 127.0.0.1      | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| ::1            | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| localhost      |      |                                           |
| sht-sgmhadoopnn-01 |      |                                           |
+----------------+------+-------------------------------------------+
6 rows in set (0.00 sec)mysql> delete from user where user='';
mysql> select host,user,password from user;
+----------------+------+-------------------------------------------+
| host           | user | password                                  |
+----------------+------+-------------------------------------------+
| localhost      | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| sht-sgmhadoopnn-01 | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| 127.0.0.1      | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
| ::1            | root | *6340BE3C15D246B0D74BAF3F135915ED19E0069F |
+----------------+------+-------------------------------------------+
4 rows in set (0.00 sec)
mysql> flush privileges;

12.Configure .bash_profile

[mysqladmin@sht-sgmhadoopnn-01 ~]$ cat .bash_profile
# .bash_profile
# Get the aliases and functionsif [ -f ~/.bashrc ]; then. ~/.bashrc
fi# User specific environment and startup programs
# User specific environment and startup programs
export MYSQL_HOME=/usr/local/mysql
export PATH=$MYSQL_HOME/bin:$PATHRemark:Error1: File '/usr/local/mysql/arch/mysql-bin.index' not found (Errcode: 13)test2.localdomain:mysqladmin:/usr/local/mysql/arch:>chmod 755 *test2.localdomain:mysqladmin:/usr/local/mysql/arch:>chown –R mysqladmin:dba *database: n table，n view, n index
tableoadb  oaadmin
erpdb erpdbadmin-----------------------------------------------
create database ruozedb;
grant all privileges on ruozedb.* to ruoze@'%' identified by '123456';
flush privileges;MySQL: 部署hadoop001机器 : 127.0.0.1 / 192.168.137.190
ruoze@'192.168.137.190' : 只能在192.168.137.190去访问
ruoze@'%': hadoop001机器允许ruoze用户在任意ip电脑上访问mysql数据库172.16.110.100 mysql
'user'@'172.16.110.0' 网段172.16.110.1
172.16.110.2
.......grant all privileges on ruozedb.* to ruoze@'127.0.0.1' identified by '123456';
grant xxxx on xxx to xxxx identified by xxxx;flush privileges;drop user ruoze@'%'grant all privileges on ruozedb.* to ruoze@'192.168.137.190' identified by '123456';window--VM8-->linux mysql192.168.137.1dbeaver-p123456 不能有空格
-p 123456 回车输入密码
-p   生产[mysqladmin@hadoop000 ~]$ mysql -u root -p 123456 -h 127.0.0.1 -P 3306
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[mysqladmin@hadoop000 ~]$

结束语：羡慕别人的时候，还不如扎实的认识自己，仰望他人的时候，还不如踏实的审视自己，路在自己脚下，苦要自己吃，这个过程没有捷径。

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【MySQL部署与安装】