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content/post/mysql-install.md

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+---
+title: "安装 Mysql"
+date: 2019-10-30T13:00:28+08:00
+lastmod: 2022-03-28T19:00:00+08:00
+tags: ["centos", "yum", "mysql"]
+categories: ["database"]
+---
+
+## CentOS7 yum 安装 Mysql5.7
+### 环境
+- CentOS 7.4 x86_64 最小安装
+- MySQL 5.7.20
+
+### 安装 mysql yum 源
+- 下载 rpm 包
+    ```bash
+    # repo 地址: https://repo.mysql.com/
+    cd /root/
+    curl -O https://repo.mysql.com/mysql57-community-release-el7.rpm
+    ```
+
+- 安装 mysql 源
+    ```bash
+    rpm -ivh /root/mysql57-community-release-el7.rpm
+    ```
+
+- 更新 yum 缓存
+    ```bash
+    yum clean all
+    yum makecache fast
+    ```
+
+### 安装 mysql
+- yum 安装 mysql 包
+    ```bash
+    yum install mysql-community-server
+    ```
+
+- 启动 mysql
+    ```bash
+    systemctl start mysqld
+    ```
+
+- 查找 mysql 默认 root 密码
+    ```bash
+    grep 'temporary password' /var/log/mysqld.log
+    ```
+
+- 修改 root 密码
+    ```bash
+    mysqladmin -uroot -p password 'Pass-1234'
+    # 输入查找到的密码
+    ```
+
+## CentOS7 安装 MySQL8 通用二进制包
+### 环境
+- CentOS 7.9 x86_64 最小安装
+- MySQL 8.0.28 多实例
+- 普通用户 mortal
+
+### 安装 mysql
+- 创建普通用户 mortal，切换到 mortal 用户下
+    ```bash
+    useradd -m mortal
+    su - mortal
+    ```
+
+- 下载 MySQL8 通用二进制包
+    ```bash
+    cd ~
+    curl -LO https://mirrors.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-8.0/mysql-8.0.28-linux-glibc2.12-x86_64.tar.xz
+    ```
+
+- 解压
+    ```bash
+    cd ~
+    tar xf mysql-8.0.28-linux-glibc2.12-x86_64.tar.xz
+    mv mysql-8.0.28-linux-glibc2.12-x86_64 mysql
+    ```
+
+- 创建三个实例的目录
+    ```bash
+    cd ~
+    mkdir -p instance-{1..3}/{file,log}
+    ```
+
+- 创建各实例的配置文件 instance-{1..3}/my.cnf
+    ```bash
+    cd ~
+    for i in {1..3}; do
+        cat > instance-$i/my.cnf <<-EOF
+    [mysqld]
+    mysqlx = OFF
+    port = 330$i
+    basedir = /home/mortal/mysql
+    datadir = /home/mortal/instance-$i/db
+    socket = /home/mortal/instance-$i/mysqld.sock
+    pid-file = /home/mortal/instance-$i/mysqld.pid
+    secure-file-priv = /home/mortal/instance-$i/file
+    log-timestamps = SYSTEM
+    log-error = /home/mortal/instance-$i/log/error.log
+    slow-query-log = TRUE
+    slow-query-log-file = /home/mortal/instance-$i/log/slow.log
+    character-set-server = utf8mb4
+    default-storage-engine = innodb
+    #default-authentication-plugin = mysql_native_password
+    authentication_policy = mysql_native_password
+    lower-case-table-names = 1
+
+    [client]
+    socket = /home/mortal/instance-$i/mysqld.sock
+    EOF
+    done
+    ```
+
+### 初始化基础数据
+- 初始化每个实例的数据目录
+    ```bash
+    cd ~
+    mysql/bin/mysqld \
+        --defaults-file=/home/mortal/instance-1/my.cnf \
+        --initialize-insecure
+    mysql/bin/mysqld \
+        --defaults-file=/home/mortal/instance-2/my.cnf \
+        --initialize-insecure
+    mysql/bin/mysqld \
+        --defaults-file=/home/mortal/instance-3/my.cnf \
+        --initialize-insecure
+    ```
+
+### 启动 mysql
+- 启动每个实例的 mysql
+    ```bash
+    cd ~
+    mysql/bin/mysqld_safe \
+        --defaults-file=/home/mortal/instance-1/my.cnf \
+        &>> instance-1/log/mysqld_safe.out
+    mysql/bin/mysqld_safe \
+        --defaults-file=/home/mortal/instance-2/my.cnf \
+        &>> instance-2/log/mysqld_safe.out
+    mysql/bin/mysqld_safe \
+        --defaults-file=/home/mortal/instance-3/my.cnf \
+        &>> instance-3/log/mysqld_safe.out
+    ```
+
+### 设置 root 密码
+- 设置 mysql root 账户的密码
+    ```bash
+    cd ~
+    mysql/bin/mysqladmin \
+        --defaults-file=/home/mortal/instance-1/my.cnf \
+        password
+    mysql/bin/mysqladmin \
+        --defaults-file=/home/mortal/instance-2/my.cnf \
+        password
+    mysql/bin/mysqladmin \
+        --defaults-file=/home/mortal/instance-3/my.cnf \
+        password
+    ```
+
+### 客户端链接
+- 使用本机客户端链接 mysql
+    ```bash
+    cd ~
+    mysql/bin/mysql \
+        --defaults-file=/home/mortal/instance-1/my.cnf \
+        -uroot \
+        -p
+    mysql/bin/mysql \
+        --defaults-file=/home/mortal/instance-2/my.cnf \
+        -uroot \
+        -p
+    mysql/bin/mysql \
+        --defaults-file=/home/mortal/instance-3/my.cnf \
+        -uroot \
+        -p
+    ```
+

content/post/mysql5.7-install.md

@@ -1,58 +0,0 @@
----
-title: "CentOS7 yum 安装 Mysql5.7"
-date: 2019-10-30T13:00:28+08:00
-lastmod: 2019-10-30T13:00:28+08:00
-tags: ["centos", "yum", "mysql"]
-categories: ["database"]
----
-
-## 环境
-- CentOS 7.4 x86_64 最小安装
-- MySQL 5.7.20
-
-## 下载 mysql 源安装包
-    ```bash
-    # repo 地址: https://repo.mysql.com/
-    cd /root/
-    curl -O https://repo.mysql.com/mysql57-community-release-el7.rpm
-    ```
-
-## 安装 mysql 源
-    ```bash
-    rpm -ivh /root/mysql57-community-release-el7.rpm
-    ```
-
-## 更新 yum 缓存
-    ```bash
-    yum clean all
-    yum makecache fast
-    ```
-
-## 安装 mysql
-    ```bash
-    yum install mysql-community-server
-    ```
-
-## 启动 mysql
-    ```bash
-    systemctl start mysqld
-    ```
-
-## 查找 mysql 默认密码
-    ```bash
-    grep 'temporary password' /var/log/mysqld.log
-    mysql -uroot -p
-    # 输入查找到的密码
-    ```
-
-## 修改 mysql 本地密码
-- 在 mysql 下修改
-    ```sql
-    mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Pass-1234';
-    ```
-
-- 或者直接在终端修改
-    ```bash
-    mysqladmin -uroot -p password 'Pass-1234'
-    ```
-