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
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**再次查看 **
show VARIABLES like '%log_bin%' -
准备数据
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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');
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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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______ _ _ _ _____ ____ _ _____ _ _ _ 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]+'
);
- ‘database-name’ = ‘emp_[0-9]+’： 这里是使用了正则表达式，同时连接多个库
- ‘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：
- connector ： 指定连接器是doris
- fenodes：doris FE节点IP地址及http port
- table.identifier ： Doris对应的数据库及表名
- username：doris用户名
- password：doris用户密码
- 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- 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
- 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
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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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