基于Binlog、FlinkCDC、Doris实现实时数据同步

基于Binlog、FlinkCDC、Doris实现数据实时同步

Docker部署MySQL

docker pull mysql:5.7.32

• 通过挂载的方式开启一个mysql镜像

docker run -p 3307:3306 --name myMysql -v /usr/docker/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root  -d mysql:5.7.32

备注：需提前在宿主机目录下创建一个文件用于保存mysql的数据集，我这里创建的目录是 /usr/docker/mysql/data

• 使用客户端连接工具连接上mysql，观察一下mysql_binlog的开启情况

• 开启bin_log

docker exec myMysql bash -c "echo 'log-bin=/var/lib/mysql/mysql-bin' >> /etc/mysql/mysql.conf.d/mysqld.cnf"

docker exec myMysql bash -c "echo 'server-id=123454' >> /etc/mysql/mysql.conf.d/mysqld.cnf"

• 重启mysql镜像

docker restart myMysql

• **再次查看 **show VARIABLES like '%log_bin%'

  • 

• 准备数据

  • CREATE DATABASE emp_1;
     USE emp_1;
    CREATE TABLE employees_1 (
        emp_no      INT             NOT NULL,
        birth_date  DATE            NOT NULL,
        first_name  VARCHAR(14)     NOT NULL,
        last_name   VARCHAR(16)     NOT NULL,
        gender      ENUM ('M','F')  NOT NULL,    
        hire_date   DATE            NOT NULL,
        PRIMARY KEY (emp_no)
    );
    ​
    INSERT INTO `employees_1` VALUES (10001,'1953-09-02','Georgi','Facello','M','1986-06-27'),
    (10002,'1964-06-02','Bezalel','Simmel','F','1985-11-21'),
    (10003,'1959-12-03','Parto','Bamford','M','1986-08-28'),
    (10004,'1954-05-01','Chirstian','Koblick','M','1986-12-01'),
    (10005,'1955-01-21','Kyoichi','Maliniak','M','1989-09-12'),
    (10006,'1953-04-20','Anneke','Preusig','F','1989-06-02'),
    (10007,'1957-05-23','Tzvetan','Zielinski','F','1989-02-10'),
    (10008,'1958-02-19','Saniya','Kalloufi','M','1994-09-15'),
    (10009,'1952-04-19','Sumant','Peac','F','1985-02-18'),
    (10010,'1963-06-01','Duangkaew','Piveteau','F','1989-08-24'),
    (10011,'1953-11-07','Mary','Sluis','F','1990-01-22'),
    (10012,'1960-10-04','Patricio','Bridgland','M','1992-12-18'),
    (10013,'1963-06-07','Eberhardt','Terkki','M','1985-10-20'),
    (10014,'1956-02-12','Berni','Genin','M','1987-03-11'),
    (10015,'1959-08-19','Guoxiang','Nooteboom','M','1987-07-02'),
    (10016,'1961-05-02','Kazuhito','Cappelletti','M','1995-01-27'),
    (10017,'1958-07-06','Cristinel','Bouloucos','F','1993-08-03'),
    (10018,'1954-06-19','Kazuhide','Peha','F','1987-04-03'),
    (10019,'1953-01-23','Lillian','Haddadi','M','1999-04-30'),
    (10020,'1952-12-24','Mayuko','Warwick','M','1991-01-26'),
    (10021,'1960-02-20','Ramzi','Erde','M','1988-02-10'),
    (10022,'1952-07-08','Shahaf','Famili','M','1995-08-22'),
    (10023,'1953-09-29','Bojan','Montemayor','F','1989-12-17'),
    (10024,'1958-09-05','Suzette','Pettey','F','1997-05-19'),
    (10025,'1958-10-31','Prasadram','Heyers','M','1987-08-17'),
    (10026,'1953-04-03','Yongqiao','Berztiss','M','1995-03-20'),
    (10027,'1962-07-10','Divier','Reistad','F','1989-07-07'),
    (10028,'1963-11-26','Domenick','Tempesti','M','1991-10-22'),
    (10029,'1956-12-13','Otmar','Herbst','M','1985-11-20'),
    (10030,'1958-07-14','Elvis','Demeyer','M','1994-02-17'),
    (10031,'1959-01-27','Karsten','Joslin','M','1991-09-01'),
    (10032,'1960-08-09','Jeong','Reistad','F','1990-06-20'),
    (10033,'1956-11-14','Arif','Merlo','M','1987-03-18'),
    (10034,'1962-12-29','Bader','Swan','M','1988-09-21'),
    (10035,'1953-02-08','Alain','Chappelet','M','1988-09-05'),
    (10036,'1959-08-10','Adamantios','Portugali','M','1992-01-03');
    ​
    CREATE TABLE employees_2 (
        emp_no      INT             NOT NULL,
        birth_date  DATE            NOT NULL,
        first_name  VARCHAR(14)     NOT NULL,
        last_name   VARCHAR(16)     NOT NULL,
        gender      ENUM ('M','F')  NOT NULL,    
        hire_date   DATE            NOT NULL,
        PRIMARY KEY (emp_no)
    );
    ​
    INSERT INTO `employees_2` VALUES (10037,'1963-07-22','Pradeep','Makrucki','M','1990-12-05'),
    (10038,'1960-07-20','Huan','Lortz','M','1989-09-20'),
    (10039,'1959-10-01','Alejandro','Brender','M','1988-01-19'),
    (10040,'1959-09-13','Weiyi','Meriste','F','1993-02-14'),
    (10041,'1959-08-27','Uri','Lenart','F','1989-11-12'),
    (10042,'1956-02-26','Magy','Stamatiou','F','1993-03-21'),
    (10043,'1960-09-19','Yishay','Tzvieli','M','1990-10-20'),
    (10044,'1961-09-21','Mingsen','Casley','F','1994-05-21'),
    (10045,'1957-08-14','Moss','Shanbhogue','M','1989-09-02'),
    (10046,'1960-07-23','Lucien','Rosenbaum','M','1992-06-20'),
    (10047,'1952-06-29','Zvonko','Nyanchama','M','1989-03-31'),
    (10048,'1963-07-11','Florian','Syrotiuk','M','1985-02-24'),
    (10049,'1961-04-24','Basil','Tramer','F','1992-05-04'),
    (10050,'1958-05-21','Yinghua','Dredge','M','1990-12-25'),
    (10051,'1953-07-28','Hidefumi','Caine','M','1992-10-15'),
    (10052,'1961-02-26','Heping','Nitsch','M','1988-05-21'),
    (10053,'1954-09-13','Sanjiv','Zschoche','F','1986-02-04'),
    (10054,'1957-04-04','Mayumi','Schueller','M','1995-03-13');
    ​
    ​
    CREATE DATABASE emp_2;
    ​
    USE emp_2;
    ​
    CREATE TABLE employees_1 (
        emp_no      INT             NOT NULL,
        birth_date  DATE            NOT NULL,
        first_name  VARCHAR(14)     NOT NULL,
        last_name   VARCHAR(16)     NOT NULL,
        gender      ENUM ('M','F')  NOT NULL,    
        hire_date   DATE            NOT NULL,
        PRIMARY KEY (emp_no)
    );
    ​
    ​
    INSERT INTO `employees_1` VALUES  (10055,'1956-06-06','Georgy','Dredge','M','1992-04-27'),
    (10056,'1961-09-01','Brendon','Bernini','F','1990-02-01'),
    (10057,'1954-05-30','Ebbe','Callaway','F','1992-01-15'),
    (10058,'1954-10-01','Berhard','McFarlin','M','1987-04-13'),
    (10059,'1953-09-19','Alejandro','McAlpine','F','1991-06-26'),
    (10060,'1961-10-15','Breannda','Billingsley','M','1987-11-02'),
    (10061,'1962-10-19','Tse','Herber','M','1985-09-17'),
    (10062,'1961-11-02','Anoosh','Peyn','M','1991-08-30'),
    (10063,'1952-08-06','Gino','Leonhardt','F','1989-04-08'),
    (10064,'1959-04-07','Udi','Jansch','M','1985-11-20'),
    (10065,'1963-04-14','Satosi','Awdeh','M','1988-05-18'),
    (10066,'1952-11-13','Kwee','Schusler','M','1986-02-26'),
    (10067,'1953-01-07','Claudi','Stavenow','M','1987-03-04'),
    (10068,'1962-11-26','Charlene','Brattka','M','1987-08-07'),
    (10069,'1960-09-06','Margareta','Bierman','F','1989-11-05'),
    (10070,'1955-08-20','Reuven','Garigliano','M','1985-10-14'),
    (10071,'1958-01-21','Hisao','Lipner','M','1987-10-01'),
    (10072,'1952-05-15','Hironoby','Sidou','F','1988-07-21'),
    (10073,'1954-02-23','Shir','McClurg','M','1991-12-01'),
    (10074,'1955-08-28','Mokhtar','Bernatsky','F','1990-08-13'),
    (10075,'1960-03-09','Gao','Dolinsky','F','1987-03-19'),
    (10076,'1952-06-13','Erez','Ritzmann','F','1985-07-09'),
    (10077,'1964-04-18','Mona','Azuma','M','1990-03-02'),
    (10078,'1959-12-25','Danel','Mondadori','F','1987-05-26'),
    (10079,'1961-10-05','Kshitij','Gils','F','1986-03-27'),
    (10080,'1957-12-03','Premal','Baek','M','1985-11-19'),
    (10081,'1960-12-17','Zhongwei','Rosen','M','1986-10-30'),
    (10082,'1963-09-09','Parviz','Lortz','M','1990-01-03'),
    (10083,'1959-07-23','Vishv','Zockler','M','1987-03-31'),
    (10084,'1960-05-25','Tuval','Kalloufi','M','1995-12-15');
    ​
    ​
    CREATE TABLE employees_2(
        emp_no      INT             NOT NULL,
        birth_date  DATE            NOT NULL,
        first_name  VARCHAR(14)     NOT NULL,
        last_name   VARCHAR(16)     NOT NULL,
        gender      ENUM ('M','F')  NOT NULL,    
        hire_date   DATE            NOT NULL,
        PRIMARY KEY (emp_no)
    );
    ​
    INSERT INTO `employees_2` VALUES (10085,'1962-11-07','Kenroku','Malabarba','M','1994-04-09'),
    (10086,'1962-11-19','Somnath','Foote','M','1990-02-16'),
    (10087,'1959-07-23','Xinglin','Eugenio','F','1986-09-08'),
    (10088,'1954-02-25','Jungsoon','Syrzycki','F','1988-09-02'),
    (10089,'1963-03-21','Sudharsan','Flasterstein','F','1986-08-12'),
    (10090,'1961-05-30','Kendra','Hofting','M','1986-03-14'),
    (10091,'1955-10-04','Amabile','Gomatam','M','1992-11-18'),
    (10092,'1964-10-18','Valdiodio','Niizuma','F','1989-09-22'),
    (10093,'1964-06-11','Sailaja','Desikan','M','1996-11-05'),
    (10094,'1957-05-25','Arumugam','Ossenbruggen','F','1987-04-18'),
    (10095,'1965-01-03','Hilari','Morton','M','1986-07-15'),
    (10096,'1954-09-16','Jayson','Mandell','M','1990-01-14'),
    (10097,'1952-02-27','Remzi','Waschkowski','M','1990-09-15'),
    (10098,'1961-09-23','Sreekrishna','Servieres','F','1985-05-13'),
    (10099,'1956-05-25','Valter','Sullins','F','1988-10-18'),
    (10100,'1953-04-21','Hironobu','Haraldson','F','1987-09-21'),
    (10101,'1952-04-15','Perla','Heyers','F','1992-12-28'),
    (10102,'1959-11-04','Paraskevi','Luby','F','1994-01-26'),
    (10103,'1953-11-26','Akemi','Birch','M','1986-12-02'),
    (10104,'1961-11-19','Xinyu','Warwick','M','1987-04-16'),
    (10105,'1962-02-05','Hironoby','Piveteau','M','1999-03-23'),
    (10106,'1952-08-29','Eben','Aingworth','M','1990-12-19'),
    (10107,'1956-06-13','Dung','Baca','F','1994-03-22'),
    (10108,'1952-04-07','Lunjin','Giveon','M','1986-10-02'),
    (10109,'1958-11-25','Mariusz','Prampolini','F','1993-06-16'),
    (10110,'1957-03-07','Xuejia','Ullian','F','1986-08-22'),
    (10111,'1963-08-29','Hugo','Rosis','F','1988-06-19'),
    (10112,'1963-08-13','Yuichiro','Swick','F','1985-10-08'),
    (10113,'1963-11-13','Jaewon','Syrzycki','M','1989-12-24'),
    (10114,'1957-02-16','Munir','Demeyer','F','1992-07-17'),
    (10115,'1964-12-25','Chikara','Rissland','M','1986-01-23'),
    (10116,'1955-08-26','Dayanand','Czap','F','1985-05-28');
    

• 这时在宿主机下已经产生了日志文件

  • 

Docker 部署 Doris

 docker pull ashuang123/doris-fe:11.111
 docker pull ashuang123/doris-be:11.111

创建挂载的文件夹

mkdir -p /opt/doris/doris-meta
mkdir -p /opt/doris/log/doris-fe
mkdir -p /opt/doris/doris-storage
mkdir -p /opt/doris/log/doris-be

运行Fe

docker run --name doris-fe -p 8030:8030 -p 9030:9030 -d -v /opt/doris/doris-meta:/doris-meta -v /opt/doris/log/doris-fe:/code/log ashuang123/doris-fe:11.111

运行Be

docker run --name doris-be -p 8040:8040 -v /opt/doris/doris-storage:/doris-storage -v /opt/doris/log/doris-be:/code/log -d ashuang123/doris-be:11.111

查看容器IP

DESKTOP-RBQ4DFJ :: /opt/doris » docker inspect doris-fe | grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.2",
                    "IPAddress": "172.17.0.2",
DESKTOP-RBQ4DFJ :: /opt/doris »
DESKTOP-RBQ4DFJ :: /opt/doris » docker inspect doris-be | grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "172.17.0.3",
                    "IPAddress": "172.17.0.3",
DESKTOP-RBQ4DFJ :: /opt/doris »

测试服务是否正常

PS C:\Users\Lenovo> mysql -h 172.17.0.2 -P 9030 -uroot
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 0
Server version: 5.7.37 Doris version trunk-Unknown

Copyright (c) 2000, 2020, 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>

添加BE至FE中

mysql> alter system add backend "172.17.0.3:9050";
Query OK, 0 rows affected (0.05 sec)

mysql>

查看Be状态

mysql> show proc '/backends' \G
*************************** 1. row ***************************
            BackendId: 10002
              Cluster: default_cluster
                   IP: 172.17.0.3
             HostName: 172.17.0.3
        HeartbeatPort: 9050
               BePort: 9060
             HttpPort: 8040
             BrpcPort: 8060
        LastStartTime: 2022-09-02 04:27:22
        LastHeartbeat: 2022-09-02 04:31:49
                Alive: true
 SystemDecommissioned: false
ClusterDecommissioned: false
            TabletNum: 0
     DataUsedCapacity: 0.000
        AvailCapacity: 230.809 GB
        TotalCapacity: 250.982 GB
              UsedPct: 8.04 %
       MaxDiskUsedPct: 8.04 %
                  Tag: {"location" : "default"}
               ErrMsg:
              Version: trunk-Unknown
               Status: {"lastSuccessReportTabletsTime":"2022-09-02 04:31:28","lastStreamLoadTime":-1,"isQueryDisabled":false,"isLoadDisabled":false}
1 row in set (13.09 sec)

mysql>

修改数据库root密码

mysql> set PASSWORD  FOR 'root' = PASSWORD('ofbiz@123');
Query OK, 0 rows affected (0.02 sec)

mysql>

Flink安装配置

**准备Flink安装包 **flink-1.14.4-bin-scala_2.12.tgz

tar -zxvf flink-1.14.4-bin-scala_2.12.tgz -C .

准备两个Jar放到Flink/lib目录下

wget https://jiafeng-1308700295.cos.ap-hongkong.myqcloud.com/flink-doris-connector-1.14_2.12-1.0.0-SNAPSHOT.jar
wget https://repo1.maven.org/maven2/com/ververica/flink-sql-connector-mysql-cdc/2.2.1/flink-sql-connector-mysql-cdc-2.2.1.jar

启动Flink

 bin/start-cluster.sh

进入页面

同步数据到Doris

创建Doris数据库及表

create database demo;
use demo;
CREATE TABLE all_employees_info (
    emp_no       int NOT NULL,
    birth_date   date,
    first_name   varchar(20),
    last_name    varchar(20),
    gender       char(2),
    hire_date    date,
    database_name varchar(50),
    table_name    varchar(200)
)
UNIQUE KEY(`emp_no`, `birth_date`)
DISTRIBUTED BY HASH(`birth_date`) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1"
);

进入Flink SQL Client

# bin/sql-client.sh embedded
Command history file path: /root/.flink-sql-history

                                   ▒▓██▓██▒
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                ░██▓  ░█░            █  █▒ ▒█████▓▒ ██▓░▒
               ███░ ░ █░          ▓ ░█ █████▒░░    ░█░▓  ▓░
              ██▓█ ▒▒▓▒          ▓███████▓░       ▒█▒ ▒▓ ▓██▓
           ▒██▓ ▓█ █▓█       ░▒█████▓▓▒░         ██▒▒  █ ▒  ▓█▒
           ▓█▓  ▓█ ██▓ ░▓▓▓▓▓▓▓▒              ▒██▓           ░█▒
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          ██ ▓░▒█   ▓▓▓▓▒░░  ▒█▓       ▒▓▓██▓    ▓▒          ▒▒▓
          ▓█▓ ▓▒█  █▓░  ░▒▓▓██▒            ░▓█▒   ▒▒▒░▒▒▓█████▒
           ██░ ▓█▒█▒  ▒▓▓▒  ▓█                █░      ░░░░   ░█▒
           ▓█   ▒█▓   ░     █░                ▒█              █▓
            █▓   ██         █░                 ▓▓        ▒█▓▓▓▒█░
             █▓ ░▓██░       ▓▒                  ▓█▓▒░░░▒▓█░    ▒█
              ██   ▓█▓░      ▒                    ░▒█▒██▒      ▓▓
               ▓█▒   ▒█▓▒░                         ▒▒ █▒█▓▒▒░░▒██
                ░██▒    ▒▓▓▒                     ▓██▓▒█▒ ░▓▓▓▓▒█▓
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    ______ _ _       _       _____  ____  _         _____ _ _            _  BETA
   |  ____| (_)     | |     / ____|/ __ \| |       / ____| (_)          | |
   | |__  | |_ _ __ | | __ | (___ | |  | | |      | |    | |_  ___ _ __ | |_
   |  __| | | | '_ \| |/ /  \___ \| |  | | |      | |    | | |/ _ \ '_ \| __|
   | |    | | | | | |   <   ____) | |__| | |____  | |____| | |  __/ | | | |_
   |_|    |_|_|_| |_|_|\_\ |_____/ \___\_\______|  \_____|_|_|\___|_| |_|\__|

        Welcome! Enter 'HELP;' to list all available commands. 'QUIT;' to exit.


Flink SQL>

开启 checkpoint，每隔10秒做一次 checkpoint , Checkpoint 默认是不开启的，我们需要开启 Checkpoint 来让 Iceberg 可以提交事务。Source在启动时会扫描全表，将表按照主键分成多个chunk。并使用增量快照算法逐个读取每个chunk的数据。作业会周期性执行Checkpoint，记录下已经完成的chunk。当发生Failover时，只需要继续读取未完成的chunk。当chunk全部读取完后，会从之前获取的Binlog位点读取增量的变更记录。Flink作业会继续周期性执行Checkpoint，记录下Binlog位点，当作业发生Failover，便会从之前记录的Binlog位点继续处理，从而实现Exactly Once语义

注意： 这里是演示，生产环境建议checkpoint间隔60秒

SET execution.checkpointing.interval = 10s;

创建MySQL CDC表

在Flink SQL Client 下执行下面的 SQL

CREATE TABLE employees_source (
    database_name STRING METADATA VIRTUAL,
    table_name STRING METADATA VIRTUAL,
    emp_no int NOT NULL,
    birth_date date,
    first_name STRING,
    last_name STRING,
    gender STRING,
    hire_date date,
    PRIMARY KEY (`emp_no`) NOT ENFORCED
  ) WITH (
    'connector' = 'mysql-cdc',
    'hostname' = 'localhost',
    'port' = '3307',
    'username' = 'root',
    'password' = 'root',
    'database-name' = 'emp_[0-9]+',
    'table-name' = 'employees_[0-9]+'
  );

1. ‘database-name’ = ‘emp_[0-9]+’： 这里是使用了正则表达式，同时连接多个库
2. ‘table-name’ = ‘employees_[0-9]+’：这里是使用了正则表达式，同时连接多个表

查询CDC表

select * from employees_source limit 10;

创建 Doris Sink 表

CREATE TABLE cdc_doris_sink (
    emp_no       int ,
    birth_date   STRING,
    first_name   STRING,
    last_name    STRING,
    gender       STRING,
    hire_date    STRING,
    database_name STRING,
    table_name    STRING
) 
WITH (
  'connector' = 'doris',
  'fenodes' = '172.17.0.3:8030',
  'table.identifier' = 'demo.all_employees_info',
  'username' = 'root',
  'password' = 'mysql密码',
  'sink.properties.two_phase_commit'='true',
  'sink.label-prefix'='doris_demo_emp_001'
);

参数说明：

1. connector ： 指定连接器是doris
2. fenodes：doris FE节点IP地址及http port
3. table.identifier ： Doris对应的数据库及表名
4. username：doris用户名
5. password：doris用户密码
6. sink.properties.two_phase_commit：指定使用两阶段提交，这样在stream load的时候，会在http header里加上 two_phase_commit:true ，不然会失败
7. sink.label-prefix ： 这个是在两阶段提交的时候必须要加的一个参数，才能保证两端数据一致性，否则会失败
8. 其他参数参考官方文档 https://doris.apache.org/zh-CN/

查询Doris sink表 这时候还没有数据

select * from cdc_doris_sink;

将数据插入到Doris表里

insert into cdc_doris_sink (emp_no,birth_date,first_name,last_name,gender,hire_date,database_name,table_name) select emp_no,cast(birth_date as string) as birth_date ,first_name,last_name,gender,cast(hire_date as string) as hire_date ,database_name,table_name from employees_source;

可以看到Flink WEB UI上的任务运行信息

查看Doris数据

测试MySQL删除

Doris同步更新

验证Doris数据删除 , mysql更新数据, doris中也会更新

踩坑

• Flink 连接 Doris Be 超时

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  • 原因 : flink和be的网不通 , 因为我这里是WSL , 还没找到WSL的方案, 我暂时是放到了Linux系统上

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