From 3aea381f8c8c03a5b127fb736964b79cf9290247 Mon Sep 17 00:00:00 2001
From: Zhang Peng <forbreak@163.com>
Date: Thu, 11 Oct 2018 09:53:47 +0800
Subject: [PATCH] :memo: Writing docs.

---
 README.md                   |   3 +-
 docs/mysql/install-mysql.md | 132 ++++++++++++++++++++++++++++++++++++
 docs/{ => mysql}/mysql.md   |   2 +
 3 files changed, 136 insertions(+), 1 deletion(-)
 create mode 100644 docs/mysql/install-mysql.md
 rename docs/{ => mysql}/mysql.md (99%)

diff --git a/README.md b/README.md
index cd7e307..3d62d76 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 - [数据库系统概论](docs/数据库系统概论.md)
 - [数据库面试题](docs/数据库面试题.md)
 - [Sql](docs/sql.md)
-- [Mysql](docs/mysql.md)
+- [Mysql](docs/mysql/mysql.md) - 关键词：存储引擎,数据类型,事务,MVCC,索引,执行计划,复制
+- [Mysql 安装](docs/mysql/install-mysql.md) - Centos 环境下的 Mysql 安装
 - [PostgreSQL](docs/postgresql.md)
 - [H2](docs/h2.md)
 - [Redis](docs/redis/redis.md)
diff --git a/docs/mysql/install-mysql.md b/docs/mysql/install-mysql.md
new file mode 100644
index 0000000..c868075
--- /dev/null
+++ b/docs/mysql/install-mysql.md
@@ -0,0 +1,132 @@
+# Mysql 安装
+
+<!-- TOC depthFrom:2 depthTo:3 -->
+
+- [安装配置](#安装配置)
+    - [安装 mysql yum 源](#安装-mysql-yum-源)
+    - [安装 mysql 服务器](#安装-mysql-服务器)
+    - [启动 mysql 服务](#启动-mysql-服务)
+    - [初始化数据库密码](#初始化数据库密码)
+    - [配置远程访问](#配置远程访问)
+    - [跳过登录认证](#跳过登录认证)
+- [参考资料](#参考资料)
+
+<!-- /TOC -->
+
+## 安装配置
+
+通过 rpm 包安装
+
+centos 的 yum 源中默认是没有 mysql 的，所以我们需要先去官网下载 mysql 的 repo 源并安装。
+
+### 安装 mysql yum 源
+
+官方下载地址：https://dev.mysql.com/downloads/repo/yum/
+
+（1）下载 yum 源
+
+```sh
+$ wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm
+```
+
+（2）安装 yum repo 文件并更新 yum 缓存
+
+```sh
+$ rpm -ivh mysql80-community-release-el7-1.noarch.rpm
+```
+
+执行结果：
+
+会在 /etc/yum.repos.d/ 目录下生成两个 repo 文件
+
+```sh
+ls | grep mysql
+mysql-community.repo
+mysql-community-source.repo
+```
+
+更新 yum：
+
+```sh
+$ yum clean all
+$ yum makecache
+```
+
+（3）查看 rpm 安装状态
+
+```sh
+$ yum repolist enabled | grep mysql.*
+mysql-connectors-community/x86_64 MySQL Connectors Community                  65
+mysql-tools-community/x86_64      MySQL Tools Community                       69
+mysql80-community/x86_64          MySQL 8.0 Community Server                  33
+```
+
+### 安装 mysql 服务器
+
+```sh
+$ yum install mysql-community-server
+```
+
+### 启动 mysql 服务
+
+```sh
+# 启动 mysql 服务
+$ systemctl start mysqld.service
+
+# 查看运行状态
+$ systemctl status mysqld.service
+
+# 开机启动
+$ systemctl enable mysqld
+$ systemctl daemon-reload
+```
+
+### 初始化数据库密码
+
+查看一下初始密码
+
+```sh
+$ grep "password" /var/log/mysqld.log
+2018-09-30T03:13:41.727736Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: %:lt+srWu4k1
+```
+
+执行命令：
+
+```sh
+mysql -uroot -p
+```
+
+输入临时密码，进入 mysql
+
+```sh
+ALTER user 'root'@'localhost' IDENTIFIED BY 'Tw#123456';
+```
+
+注：密码强度默认为中等，大小写字母、数字、特殊符号，只有修改成功后才能修改配置再设置更简单的密码
+
+### 配置远程访问
+
+```
+GRANT ALL ON *.* TO 'root'@'localhost';
+FLUSH PRIVILEGES;
+```
+
+### 跳过登录认证
+
+```
+vim /etc/my.cnf
+```
+
+在 [mysqld] 下面加上 skip-grant-tables
+
+作用是登录时跳过登录认证，换句话说就是 root 什么密码都可以登录进去。
+
+执行 `service mysqld restart`，重启 mysql
+
+## 参考资料
+
+https://www.cnblogs.com/xiaopotian/p/8196464.html
+https://www.cnblogs.com/bigbrotherer/p/7241845.html
+https://blog.csdn.net/managementandjava/article/details/80039650
+http://www.manongjc.com/article/6996.html
+https://www.cnblogs.com/xyabk/p/8967990.html
diff --git a/docs/mysql.md b/docs/mysql/mysql.md
similarity index 99%
rename from docs/mysql.md
rename to docs/mysql/mysql.md
index 4df7771..0d44cd1 100644
--- a/docs/mysql.md
+++ b/docs/mysql/mysql.md
@@ -10,6 +10,8 @@ tags:
 
 # Mysql
 
+> 关键词：存储引擎,数据类型,事务,MVCC,索引,执行计划,主从复制
+
 <!-- TOC depthFrom:2 depthTo:3 -->
 
 - [1. 存储引擎](#1-存储引擎)