flink cdc多种数据源安装、配置与验证

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flink cdc多种数据源安装、配置与验证

文章目录

• 1. 前言
• 2. 数据源安装与配置
• 2.1 MySQL
• 2.1.1 安装
• 2.1.2 CDC 配置
• 2.2 Postgresql
• 2.2.1 安装
• 2.2.2 CDC 配置
• 2.3 Oracle
• 2.3.1 安装
• 2.3.2 CDC 配置
• 2.4 SQLServer
• 2.4.1 安装
• 2.4.2 CDC 配置
• 3. 验证
• 3.1 Flink版本与CDC版本的对应关系
• 3.2 下载相关包
• 3.3 添加cdc jar 至lib目录
• 3.4 验证

本文目录结构：

|___ 1. 前言
|___ 2. 数据源安装与配置
|______ 2.1 MySQL
|_________ 2.1.1 安装
|_________ 2.1.2 CDC 配置
|______ 2.2 Postgresql
|_________ 2.2.1 安装
|_________ 2.2.2 CDC 配置
|______ 2.3 Oracle
|_________2.3.1 安装
|_________2.3.2 CDC 配置
|_______2.4 SQLServer
|_________2.4.1 安装
|_________2.4.2 CDC 配置
|___ 3. 验证
|_______3.1 Flink版本与CDC版本的对应关系
|_______3.2 下载相关包
|_______3.3 添加cdc jar 至lib目录
|_______3.4 验证

---

1. 前言

关于如何使用和配置flink cdc功能，其实在官方文档（CDC Connectors for Apache Flink® --- CDC Connectors for Apache Flink® documentation）有相关的教程了，如下：

但是讲解的不是很详细，比如数据源怎么安装？怎么配置？都没有很详细的描述每一步骤，因此博主前面发布多篇文章以此来记录flink cdc相关数据源以及其配置相关的文章，有兴趣的同学可以参考下：

• 《docker下安装oracle11g（一次安装成功）》
• 《Docker下安装SqlServer2019》
• 《flink postgresql cdc实时同步（含pg安装配置等）》
• 《flink oracle cdc实时同步（超详细）》
• 《flink sqlserver cdc实时同步（含sqlserver安装配置等）》

本文主要就是记录在docker下安装和配置各种数据源，以实现flink cdc的功能，包含如下常见的数据源：

数据源	版本
MySQL	8.0.25
Postgresql	10.6
Oracle	11g
SqlServer	2019

2. 数据源安装与配置

2.1 MySQL

版本：8.0.25

2.1.1 安装

Step1: 拉取mysql镜像：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> pull mysql:8.0.25
</code></span></span></span></span>

Step2: 创建并运行 MySQL 容器

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> run <span style="color:#ee9900">-d</span> <span style="color:#ee9900">-p</span> <span style="color:#f1fa8c">30025</span>:3306 <span style="color:#ee9900">--name</span> mysql8.0.25 <span style="color:#ee9900">-e</span> <span style="color:#ee9900">MYSQL_ROOT_PASSWORD</span><span style="color:#6272a4">=</span>root mysql:8.0.25
</code></span></span></span></span>

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2.1.2 CDC 配置

Step1：进入正在运行的mysql容器：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#f1fa8c">exec</span> <span style="color:#ee9900">-it</span> mysql8.0.25 mysql <span style="color:#ee9900">-uroot</span> <span style="color:#ee9900">-proot</span>
</code></span></span></span></span>

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Step2：配置 CDC

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 启用二进制日志</span>
mysql<span style="color:#6272a4">></span> <span style="color:#ff79c6">SET</span> <span style="color:#ff79c6">GLOBAL</span> log_bin <span style="color:#6272a4">=</span> <span style="color:#ff79c6">ON</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 设置二进制日志格式为行级别</span>
mysql<span style="color:#6272a4">></span> <span style="color:#ff79c6">SET</span> <span style="color:#ff79c6">GLOBAL</span> binlog_format <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'ROW'</span><span style="color:#999999">;</span>
</code></span></span></span></span>

Step3（非必要）：如果配置没生效，重启容器

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> restart mysql8.0.25
</code></span></span></span></span>

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2.2 Postgresql

版本：PostgreSQL 10.6 (Debian 10.6-1.pgdg90+1)

2.2.1 安装

Step1： 拉取 PostgreSQL 10.6 版本的镜像：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> pull postgres:10.6
</code></span></span></span></span>

• 1

Step2 ：创建并启动 PostgreSQL 容器，在这里，我们将把容器的端口 5432 映射到主机的端口 30028，账号密码设置为postgres，并将 pgoutput 插件加载到 PostgreSQL 实例中：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> run <span style="color:#ee9900">-d</span> <span style="color:#ee9900">-p</span> <span style="color:#f1fa8c">30028</span>:5432 <span style="color:#ee9900">--name</span> postgres-10.6 <span style="color:#ee9900">-e</span> <span style="color:#ee9900">POSTGRES_PASSWORD</span><span style="color:#6272a4">=</span>postgres postgres:10.6 <span style="color:#ee9900">-c</span> <span style="color:#f1fa8c">'shared_preload_libraries=pgoutput'</span>
</code></span></span></span></span>

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Step3： 查看容器是否创建成功：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#8be9fd">ps</span> <span style="color:#6272a4">|</span> <span style="color:#8be9fd">grep</span> postgres-10.6
</code></span></span></span></span>

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2.2.2 CDC 配置

Step1：docker进去Postgresql数据的容器：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#f1fa8c">exec</span> <span style="color:#ee9900">-it</span> postgres-10.6  <span style="color:#8be9fd">bash</span>
</code></span></span></span></span>

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---

Step2 ：编辑postgresql.conf配置文件：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">vi</span> /var/lib/postgresql/data/postgresql.conf 
</code></span></span></span></span>

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配置内容如下：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-py"><span style="color:#6272a4"># 更改wal日志方式为logical（方式有：minimal、replica 、logical  ）</span>
wal_level <span style="color:#6272a4">=</span> logical  

<span style="color:#6272a4"># 更改solts最大数量（默认值为10），flink-cdc默认一张表占用一个slots</span>
max_replication_slots <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">20</span>

<span style="color:#6272a4"># 更改wal发送最大进程数（默认值为10），这个值和上面的solts设置一样</span>
max_wal_senders <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">20</span>     

<span style="color:#6272a4"># 中断那些停止活动超过指定毫秒数的复制连接，可以适当设置大一点（默认60s，0表示禁用）</span>
wal_sender_timeout <span style="color:#6272a4">=</span> 180s	          
</code></span></span></span></span>

---

Step3：重启容器：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> restart postgres-10.6
</code></span></span></span></span>

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连接数据库，如果查询一下语句，返回logical表示修改成功：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#ff79c6">SHOW</span> wal_level<span style="color:#999999">;</span>
</code></span></span></span></span>

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---

Step4 ：新建用户并赋权。使用创建容器时的账号密码（postgres/postgres）登录Postgresql数据库。

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 创建数据库 test_db</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">DATABASE</span> test_db<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 连接到新创建的数据库 test_db</span>
\c test_db

<span style="color:#6272a4">-- 创建 t_user 表</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#f1fa8c">"public"</span><span style="color:#999999">.</span><span style="color:#f1fa8c">"t_user"</span> <span style="color:#999999">(</span>
    <span style="color:#f1fa8c">"id"</span> int8 <span style="color:#6272a4">NOT</span> <span style="color:#8be9fd">NULL</span><span style="color:#999999">,</span>
    <span style="color:#f1fa8c">"name"</span> <span style="color:#ff79c6">varchar</span><span style="color:#999999">(</span><span style="color:#f1fa8c">255</span><span style="color:#999999">)</span><span style="color:#999999">,</span>
    <span style="color:#f1fa8c">"age"</span> int2<span style="color:#999999">,</span>
    <span style="color:#ff79c6">PRIMARY</span> <span style="color:#ff79c6">KEY</span> <span style="color:#999999">(</span><span style="color:#f1fa8c">"id"</span><span style="color:#999999">)</span>
<span style="color:#999999">)</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- pg新建用户</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">USER</span> test1 <span style="color:#ff79c6">WITH</span> PASSWORD <span style="color:#f1fa8c">'test123'</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 给用户复制流权限</span>
<span style="color:#ff79c6">ALTER</span> ROLE test1 <span style="color:#ff79c6">replication</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 给用户登录数据库权限</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">CONNECT</span> <span style="color:#ff79c6">ON</span> <span style="color:#ff79c6">DATABASE</span> test_db <span style="color:#ff79c6">to</span> test1<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 把当前库public下所有表查询权限赋给用户</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">ALL</span> <span style="color:#ff79c6">PRIVILEGES</span> <span style="color:#ff79c6">ON</span> <span style="color:#ff79c6">ALL</span> <span style="color:#ff79c6">TABLES</span> <span style="color:#6272a4">IN</span> <span style="color:#ff79c6">SCHEMA</span> <span style="color:#ff79c6">public</span> <span style="color:#ff79c6">TO</span> test1<span style="color:#999999">;</span>

</code></span></span></span></span>

---

Step4：发布表：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 设置发布为true</span>
<span style="color:#ff79c6">update</span> pg_publication <span style="color:#ff79c6">set</span> puballtables<span style="color:#6272a4">=</span><span style="color:#8be9fd">true</span> <span style="color:#ff79c6">where</span> pubname <span style="color:#6272a4">is</span> <span style="color:#6272a4">not</span> <span style="color:#8be9fd">null</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 把所有表进行发布</span>
<span style="color:#ff79c6">CREATE</span> PUBLICATION dbz_publication <span style="color:#ff79c6">FOR</span> <span style="color:#ff79c6">ALL</span> <span style="color:#ff79c6">TABLES</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 查询哪些表已经发布</span>
<span style="color:#ff79c6">select</span> <span style="color:#6272a4">*</span> <span style="color:#ff79c6">from</span> pg_publication_tables<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 更改复制标识包含更新和删除之前值（目的是为了确保表 t_user 在实时同步过程中能够正确地捕获并同步更新和删除的数据变化。如果不执行这两条语句，那么 t_user 表的复制标识可能默认为 NOTHING，这可能导致实时同步时丢失更新和删除的数据行信息，从而影响同步的准确性）</span>
<span style="color:#ff79c6">ALTER</span> <span style="color:#ff79c6">TABLE</span> t_user REPLICA <span style="color:#ff79c6">IDENTITY</span> <span style="color:#ff79c6">FULL</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 查看复制标识（为f标识说明设置成功，f（表示 full），否则为 n（表示 nothing），即复制标识未设置）</span>
<span style="color:#ff79c6">select</span> relreplident <span style="color:#ff79c6">from</span> pg_class <span style="color:#ff79c6">where</span> relname<span style="color:#6272a4">=</span><span style="color:#f1fa8c">'t_user'</span><span style="color:#999999">;</span>
</code></span></span></span></span>

2.3 Oracle

版本：Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

2.3.1 安装

Step1：拉取 oracle 11g 镜像（有6g，要等较长的时间）

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> pull registry.cn-hangzhou.aliyuncs.com/helowin/oracle_11g
</code></span></span></span></span>

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Step2：执行以下命令以创建并运行 Oracle 11g 容器

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> run <span style="color:#ee9900">-d</span> <span style="color:#ee9900">-p</span> <span style="color:#f1fa8c">30026</span>:1521 <span style="color:#ee9900">-p</span> <span style="color:#f1fa8c">8081</span>:8080 <span style="color:#999999">\</span>
<span style="color:#ee9900">--name</span> oracle_11g <span style="color:#999999">\</span>
<span style="color:#ee9900">-e</span> <span style="color:#ee9900">ORACLE_HOME</span><span style="color:#6272a4">=</span>/home/oracle/app/oracle/product/11.2.0/dbhome_2 <span style="color:#999999">\</span>
<span style="color:#ee9900">-e</span> <span style="color:#ee9900">ORACLE_SID</span><span style="color:#6272a4">=</span>helowin <span style="color:#999999">\</span>
registry.cn-hangzhou.aliyuncs.com/helowin/oracle_11g
</code></span></span></span></span>

Step3：查看容器是否启动

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#8be9fd">ps</span> -a<span style="color:#6272a4">|</span><span style="color:#8be9fd">grep</span> oracle_11g
</code></span></span></span></span>

Step4：进入容器

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#f1fa8c">exec</span> <span style="color:#ee9900">-it</span> oracle_11g <span style="color:#8be9fd">bash</span>
</code></span></span></span></span>

**Step5：**设置账号密码

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#6272a4"># 1. 切换至root用户(默认是oracle用户)，密码为helowin</span>
<span style="color:#8be9fd">su</span> root

<span style="color:#6272a4"># 2. 创建软链接</span>
<span style="color:#8be9fd">ln</span> <span style="color:#ee9900">-s</span> <span style="color:#ee9900">$ORACLE_HOME</span>/bin/sqlplus /usr/bin

<span style="color:#6272a4"># 3.切换回oracle用户</span>
<span style="color:#8be9fd">su</span> oracle

<span style="color:#6272a4"># 4. 登录sql plus</span>
sqlplus /nolog
conn /as sysdba
<span style="color:#6272a4">## 4.1 修改system用户密码为system</span>
alter user system identified by system<span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.2 修改sys用户密码为system</span>
alter user sys identified by system<span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.3 新增一个测试用户（用户名：test，密码：test123）;</span>
create user <span style="color:#f1fa8c">test</span> identified by test123<span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.4 将dba权限给内部管理员账号和密码</span>
grant connect,resource,dba to <span style="color:#f1fa8c">test</span><span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.5 修改密码策略规则为：密码永不过期</span>
ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED<span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.6 修改数据库最大连接数；</span>
alter system <span style="color:#f1fa8c">set</span> <span style="color:#ee9900">processes</span><span style="color:#6272a4">=</span><span style="color:#f1fa8c">1000</span> <span style="color:#ee9900">scope</span><span style="color:#6272a4">=</span>spfile<span style="color:#999999">;</span>
<span style="color:#6272a4">## 4.7 最后重启数据库；</span>
<span style="color:#8be9fd">shutdown</span> immediate<span style="color:#999999">;</span>
startup<span style="color:#999999">;</span>

<span style="color:#6272a4"># 5.退出</span>
<span style="color:#f1fa8c">exit</span>
</code></span></span></span></span>

2.3.2 CDC 配置

Step1：进入容器

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> <span style="color:#f1fa8c">exec</span> <span style="color:#ee9900">-it</span> oracle_11g <span style="color:#8be9fd">bash</span>
</code></span></span></span></span>

Step2：以DBA的权限登录数据库

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql">sqlplus <span style="color:#6272a4">/</span>nolog
<span style="color:#ff79c6">CONNECT</span> sys<span style="color:#6272a4">/</span>system <span style="color:#ff79c6">AS</span> SYSDBA
</code></span></span></span></span>

Step3：启用日志归档

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 设置数据库恢复文件目标大小为10G</span>
<span style="color:#ff79c6">alter</span> system <span style="color:#ff79c6">set</span> db_recovery_file_dest_size <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">10</span>G<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 设置数据库恢复文件目标路径</span>
<span style="color:#ff79c6">alter</span> system <span style="color:#ff79c6">set</span> db_recovery_file_dest <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'/home/oracle/app/oracle/product/11.2.0'</span> scope<span style="color:#6272a4">=</span>spfile<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 立即关闭数据库</span>
<span style="color:#ff79c6">shutdown</span> immediate<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 以mount模式启动数据库</span>
startup mount<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 启用数据库归档日志模式</span>
<span style="color:#ff79c6">alter</span> <span style="color:#ff79c6">database</span> archivelog<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 打开数据库，允许用户访问</span>
<span style="color:#ff79c6">alter</span> <span style="color:#ff79c6">database</span> <span style="color:#ff79c6">open</span><span style="color:#999999">;</span>
</code></span></span></span></span>

Step4：查看日志归档是否启用（如果显示"Archive Mode"表示已经启用）

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql">archive log list<span style="color:#999999">;</span>
</code></span></span></span></span>

• 1

Step5：创建表空间

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 以DBA的权限登录数据库</span>
sqlplus <span style="color:#6272a4">/</span>nolog
<span style="color:#ff79c6">CONNECT</span> sys<span style="color:#6272a4">/</span>system <span style="color:#ff79c6">AS</span> SYSDBA
<span style="color:#6272a4">-- 创建一个名为"logminer_tbs"的表空间</span>
<span style="color:#6272a4">-- 指定表空间的数据文件路径为"/home/oracle/app/oracle/product/11.2.0/logminer_tbs.dbf"，其中"/home/oracle/app/oracle/product/11.2.0"是数据文件存储的目录，"logminer_tbs.dbf"是数据文件的文件名</span>
<span style="color:#6272a4">-- 设置表空间的初始大小为25MB</span>
<span style="color:#6272a4">-- 如果数据文件已经存在且可重用，将其重用，否则创建一个新的数据文件</span>
<span style="color:#6272a4">-- 启用表空间的自动扩展功能，即当表空间空间不足时，自动增加数据文件的大小</span>
<span style="color:#6272a4">-- 设置表空间的最大允许大小为无限，即表空间可以无限制地自动扩展</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLESPACE</span> logminer_tbs DATAFILE <span style="color:#f1fa8c">'/home/oracle/app/oracle/product/11.2.0/logminer_tbs.dbf'</span> SIZE <span style="color:#f1fa8c">25</span>M REUSE AUTOEXTEND <span style="color:#ff79c6">ON</span> MAXSIZE UNLIMITED<span style="color:#999999">;</span>
</code></span></span></span></span>

Step6：创建用户并赋权

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 创建一个名为"flinkuser"的用户，密码为"flinkpw"，将其默认表空间设置为"LOGMINER_TBS"，并在该表空间上设置无限配额。</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">USER</span> flinkuser IDENTIFIED <span style="color:#ff79c6">BY</span> flinkpw <span style="color:#ff79c6">DEFAULT</span> <span style="color:#ff79c6">TABLESPACE</span> LOGMINER_TBS QUOTA UNLIMITED <span style="color:#ff79c6">ON</span> LOGMINER_TBS<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户创建会话，即允许该用户连接到数据库。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">SESSION</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- （不支持Oracle 11g）允许"flinkuser"用户在多租户数据库（CDB）中设置容器。</span>
<span style="color:#6272a4">-- GRANT SET CONTAINER TO flinkuser;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$DATABASE视图，该视图包含有关数据库实例的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$<span style="color:#ff79c6">DATABASE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户执行任何表的闪回操作。</span>
<span style="color:#ff79c6">GRANT</span> FLASHBACK <span style="color:#ff79c6">ANY</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询任何表的数据。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ANY</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户拥有SELECT_CATALOG_ROLE角色，该角色允许查询数据字典和元数据。</span>
<span style="color:#ff79c6">GRANT</span> SELECT_CATALOG_ROLE <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户拥有EXECUTE_CATALOG_ROLE角色，该角色允许执行一些数据字典中的过程和函数。</span>
<span style="color:#ff79c6">GRANT</span> EXECUTE_CATALOG_ROLE <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询任何事务。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ANY</span> <span style="color:#ff79c6">TRANSACTION</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- （不支持Oracle 11g）允许"flinkuser"用户进行数据变更追踪（LogMiner）。</span>
<span style="color:#6272a4">-- GRANT LOGMINING TO flinkuser;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户创建表。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户锁定任何表。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">LOCK</span> <span style="color:#ff79c6">ANY</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户修改任何表。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">ALTER</span> <span style="color:#ff79c6">ANY</span> <span style="color:#ff79c6">TABLE</span> <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户创建序列。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">CREATE</span> SEQUENCE <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户执行DBMS_LOGMNR包中的过程。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">EXECUTE</span> <span style="color:#ff79c6">ON</span> DBMS_LOGMNR <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户执行DBMS_LOGMNR_D包中的过程。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">EXECUTE</span> <span style="color:#ff79c6">ON</span> DBMS_LOGMNR_D <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOG视图，该视图包含有关数据库日志文件的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOG <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOG_HISTORY视图，该视图包含有关数据库历史日志文件的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOG_HISTORY <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOGMNR_LOGS视图，该视图包含有关LogMiner日志文件的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOGMNR_LOGS <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOGMNR_CONTENTS视图，该视图包含LogMiner日志文件的内容。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOGMNR_CONTENTS <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOGMNR_PARAMETERS视图，该视图包含有关LogMiner的参数信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOGMNR_PARAMETERS <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$LOGFILE视图，该视图包含有关数据库日志文件的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$LOGFILE <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$ARCHIVED_LOG视图，该视图包含已归档的数据库日志文件的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$ARCHIVED_LOG <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 允许"flinkuser"用户查询V_$ARCHIVE_DEST_STATUS视图，该视图包含有关归档目标状态的信息。</span>
<span style="color:#ff79c6">GRANT</span> <span style="color:#ff79c6">SELECT</span> <span style="color:#ff79c6">ON</span> V_$ARCHIVE_DEST_STATUS <span style="color:#ff79c6">TO</span> flinkuser<span style="color:#999999">;</span>
</code></span></span></span></span>

Step7：数据库和表启用增量日志

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 切换至flinkuser用户</span>
sqlplus <span style="color:#6272a4">/</span>nolog
<span style="color:#ff79c6">CONNECT</span> flinkuser<span style="color:#6272a4">/</span>flinkpw

<span style="color:#6272a4">-- 创建customers表</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLE</span> customers <span style="color:#999999">(</span>
    customer_id NUMBER <span style="color:#ff79c6">PRIMARY</span> <span style="color:#ff79c6">KEY</span><span style="color:#999999">,</span>
    customer_name VARCHAR2<span style="color:#999999">(</span><span style="color:#f1fa8c">50</span><span style="color:#999999">)</span><span style="color:#999999">,</span>
    email VARCHAR2<span style="color:#999999">(</span><span style="color:#f1fa8c">100</span><span style="color:#999999">)</span><span style="color:#999999">,</span>
    phone VARCHAR2<span style="color:#999999">(</span><span style="color:#f1fa8c">20</span><span style="color:#999999">)</span>
<span style="color:#999999">)</span> <span style="color:#ff79c6">TABLESPACE</span> LOGMINER_TBS<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 查看LOGMINER_TBS表空间下的所有表</span>
<span style="color:#ff79c6">select</span> tablespace_name<span style="color:#999999">,</span> table_name <span style="color:#ff79c6">from</span> user_tables
<span style="color:#ff79c6">where</span> tablespace_name <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'LOGMINER_TBS'</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- 以DBA的权限登录数据库</span>
sqlplus <span style="color:#6272a4">/</span>nolog
<span style="color:#ff79c6">CONNECT</span> sys<span style="color:#6272a4">/</span>system <span style="color:#ff79c6">AS</span> SYSDBA

<span style="color:#6272a4">-- 为LOGMINER_TBS表空间下的customers表启用增强日志记录</span>
<span style="color:#ff79c6">ALTER</span> <span style="color:#ff79c6">TABLE</span> FLINKUSER<span style="color:#999999">.</span>CUSTOMERS <span style="color:#ff79c6">ADD</span> SUPPLEMENTAL LOG <span style="color:#ff79c6">DATA</span> <span style="color:#999999">(</span><span style="color:#ff79c6">ALL</span><span style="color:#999999">)</span> <span style="color:#ff79c6">COLUMNS</span>

<span style="color:#6272a4">-- 为数据库启用增强日志记录：</span>
<span style="color:#ff79c6">ALTER</span> <span style="color:#ff79c6">DATABASE</span> <span style="color:#ff79c6">ADD</span> SUPPLEMENTAL LOG <span style="color:#ff79c6">DATA</span><span style="color:#999999">;</span>
</code></span></span></span></span>

2.4 SQLServer

版本：Microsoft SQL Server 2019 (RTM-CU21) (KB5025808) - 15.0.4316.3 (X64)

2.4.1 安装

Step1：拉取SQL Server 2019 镜像

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> pull mcr.microsoft.com/mssql/server:2019-latest
</code></span></span></span></span>

Step2：运行 SQL Server 容器（密码必须是8个字符，并包含字母、数字和特殊字符，如：abc@123456 ，下面映射主机端口为30027）

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#8be9fd">docker</span> run <span style="color:#ee9900">-e</span> <span style="color:#f1fa8c">'ACCEPT_EULA=Y'</span> <span style="color:#ee9900">-e</span> <span style="color:#f1fa8c">'SA_PASSWORD=abc@123456'</span> <span style="color:#ee9900">-p</span> <span style="color:#f1fa8c">30027</span>:1433 <span style="color:#ee9900">--name</span> sql_server_2019 <span style="color:#ee9900">-d</span> mcr.microsoft.com/mssql/server:2019-latest
</code></span></span></span></span>

Step3：验证 SQL Server 容器是否正在运行

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code>docker ps -a|grep sql_server_2019
</code></span></span></span></span>

2.4.2 CDC 配置

Step1：开启SQLServer代理

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell"><span style="color:#6272a4">## 使用root用户登录容器</span>
<span style="color:#8be9fd">docker</span> <span style="color:#f1fa8c">exec</span> <span style="color:#ee9900">-it</span> <span style="color:#ee9900">--user</span> root sql_server_2019 <span style="color:#8be9fd">bash</span>

<span style="color:#6272a4">## 进入容器后，执行命令启用Agent</span>
/opt/mssql/bin/mssql-conf <span style="color:#f1fa8c">set</span> sqlagent.enabled <span style="color:#8be9fd">true</span>

<span style="color:#6272a4">## 退出，重启容器</span>
<span style="color:#f1fa8c">exit</span>
<span style="color:#8be9fd">docker</span> restart sql_server_2019
</code></span></span></span></span>

Step2：创建'cdc_test'测试数据库，并使用连接工具登录该数据库，使用以下 SQL 命令启用 CDC 功能

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 创建数据库</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">DATABASE</span> cdc_test<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 启用CDC功能</span>
<span style="color:#ff79c6">EXEC</span> sys<span style="color:#999999">.</span>sp_cdc_enable_db<span style="color:#999999">;</span>

<span style="color:#6272a4">-- 判断当前数据库是否启用了CDC（如果返回1，表示已启用）</span>
<span style="color:#ff79c6">SELECT</span> is_cdc_enabled <span style="color:#ff79c6">FROM</span> sys<span style="color:#999999">.</span><span style="color:#ff79c6">databases</span> <span style="color:#ff79c6">WHERE</span> name <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'cdc_test'</span><span style="color:#999999">;</span>
</code></span></span></span></span>

Step3 ：选择要进行 CDC 跟踪的表（这里使用orders表作为演示）

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#6272a4">-- 创建示例表（orders）</span>
<span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLE</span> orders <span style="color:#999999">(</span>
     id <span style="color:#ff79c6">int</span><span style="color:#999999">,</span>
     order_date <span style="color:#ff79c6">date</span><span style="color:#999999">,</span>
     purchaser <span style="color:#ff79c6">int</span><span style="color:#999999">,</span>
     quantity <span style="color:#ff79c6">int</span><span style="color:#999999">,</span>
     product_id <span style="color:#ff79c6">int</span><span style="color:#999999">,</span>
     <span style="color:#ff79c6">PRIMARY</span> <span style="color:#ff79c6">KEY</span> <span style="color:#999999">(</span><span style="color:#999999">[</span>id<span style="color:#999999">]</span><span style="color:#999999">)</span>
<span style="color:#999999">)</span><span style="color:#999999">;</span>

<span style="color:#6272a4">-- schema_name 是表所属的架构（schema）的名称。</span>
<span style="color:#6272a4">-- table_name 是要启用 CDC 跟踪的表的名称。</span>
<span style="color:#6272a4">-- cdc_role 是 CDC 使用的角色的名称。如果没有指定角色名称，系统将创建一个默认角色。</span>
<span style="color:#ff79c6">EXEC</span> sys<span style="color:#999999">.</span>sp_cdc_enable_table
  <span style="color:#ee9900">@source_schema</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'dbo'</span><span style="color:#999999">,</span>
  <span style="color:#ee9900">@source_name</span>   <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'orders'</span><span style="color:#999999">,</span>
  <span style="color:#ee9900">@role_name</span>     <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'cdc_role'</span><span style="color:#999999">;</span>
</code></span></span></span></span>

3. 验证

如果要验证flink cdc的功能，需要先下载flink的安装包，然后下载相应的cdc jar包并依赖，最后使用安装包里面的sql-client写相关的flink sql即可验证。

3.1 Flink版本与CDC版本的对应关系

下载Flink安装包以及jar包前，必须确定Flink CDC与Flink版本关系：

Flink CDC 版本	Flink 版本
1.0.0	1.11.*
1.1.0	1.11.*
1.2.0	1.12.*
1.3.0	1.12.*
1.4.0	1.13.*
2.0.*	1.13.*
2.1.*	1.13.*
2.2.*	1.13.*, 1.14.*
2.3.*	1.13.*, 1.14.*, 1.15.*, 1.16.0
2.4.*	1.13.*, 1.14.*, 1.15.*, 1.16.*, 1.17.0

本文以 ++Flink1.13.6++ + ++Flink CDC 2.2.0++ 版本为例子演示。

3.2 下载相关包

flink 安装包下载，下载地址：Downloads | Apache Flink

下载cdc相关的jar，根据自己的需求，下载相关的cdc jar：Central Repository: com/ververica

3.3 添加cdc jar 至lib目录

把需要验证的cdc jar放到flink安装包解压之后的lib目录（<FLINK_HOME>/lib/）:

3.4 验证

使用下面的命令启动 Flink 集群：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell">./bin/start-cluster.sh
</code></span></span></span></span>

启动成功，可以访问 http://localhost:8081 访问到 Flink Web UI：

使用下面的命令启动 Flink SQL CLI ：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell">./bin/sql-client.sh
</code></span></span></span></span>

展示如下页面，表示启动flink客户端成功：

执行如下FlinkSQL：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#ff79c6">CREATE</span> <span style="color:#ff79c6">TABLE</span> t_source_sqlserver <span style="color:#999999">(</span>
   id <span style="color:#ff79c6">INT</span><span style="color:#999999">,</span>
    order_date <span style="color:#ff79c6">DATE</span><span style="color:#999999">,</span>
    purchaser <span style="color:#ff79c6">INT</span><span style="color:#999999">,</span>
    quantity <span style="color:#ff79c6">INT</span><span style="color:#999999">,</span>
    product_id <span style="color:#ff79c6">INT</span><span style="color:#999999">,</span>
    <span style="color:#ff79c6">PRIMARY</span> <span style="color:#ff79c6">KEY</span> <span style="color:#999999">(</span>id<span style="color:#999999">)</span> <span style="color:#6272a4">NOT</span> ENFORCED
<span style="color:#999999">)</span> <span style="color:#ff79c6">WITH</span> <span style="color:#999999">(</span>
  <span style="color:#f1fa8c">'connector'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'sqlserver-cdc'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'hostname'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'10.194.183.120'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'port'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'30027'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'username'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'sa'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'password'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'abc@123456'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'database-name'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'cdc_test'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'schema-name'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'dbo'</span><span style="color:#999999">,</span>
  <span style="color:#f1fa8c">'table-name'</span> <span style="color:#6272a4">=</span> <span style="color:#f1fa8c">'orders'</span>
<span style="color:#999999">)</span><span style="color:#999999">;</span>
</code></span></span></span></span>

可以看到执行成功了：

执行select 语句，以便实时查看该表的数据变动：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-sql"><span style="color:#ff79c6">select</span> <span style="color:#6272a4">*</span> <span style="color:#ff79c6">from</span> t_source_sqlserver<span style="color:#999999">;</span>
</code></span></span></span></span>

从下图，可以看出，只要修改左边的数据，会在控制台实时显示新增删除的数据。

同时，也能在Flink web页面看到任务正在运行：

最后，可以通过如下命令关闭掉Flink启动的集群：

<span style="color:rgba(0, 0, 0, 0.75)"><span style="background-color:#ffffff"><span style="color:#000000"><span style="background-color:#282a36"><code class="language-shell">./stop-cluster.sh
</code></span></span></span></span>