簡介: 本文將介紹如何將 MySQL 中的數據,經過 Binlog + Canal 的形式導入到 Kafka 中,繼而被 Flink 消費的案例。java
本文將介紹如何將 MySQL 中的數據,經過 Binlog + Canal 的形式導入到 Kafka 中,繼而被 Flink 消費的案例。node
爲了可以快速的驗證整套流程的功能性,全部的組件都以單機的形式部署。若是手上的物理資源不足,能夠將本文中的全部組件一臺 4G 1U 的虛擬機環境中。mysql
若是須要在生產環境中部署,建議將每個組件替換成高可用的集羣部署方案。linux
其中,咱們單首創建了一套 Zookeeper 單節點環境,Flink、Kafka、Canal 等組件共用這個 Zookeeper 環境。web
針對於全部須要 JRE 的組件,如 Flink,Kafka,Canal,Zookeeper,考慮到升級 JRE 可能會影響到其餘的應用,咱們選擇每一個組件獨立使用本身的 JRE 環境。spring
本文分爲兩個部分,其中,前七小節主要介紹基礎環境的搭建,最後一個小節介紹了數據是如何在各個組件中流通的。sql
數據的流動通過如下組件:數據庫
目前主要的特性主要包括:express
TiDB + Flink 結構常見的幾類應用以下:apache
事件驅動型應用:
數據分析應用:
數據管道應用:
2.1 操做系統環境
[root@r20 topology]# cat /etc/redhat-release CentOS Stream release 8
2.2 軟件環境
2.3 機器分配
與傳統的單機數據庫相比,TiDB 具備如下優點:
在內核設計上,TiDB 分佈式數據庫將總體架構拆分紅了多個模塊,各模塊之間互相通訊,組成完整的 TiDB 系統。對應的架構圖以下:
在本文中,咱們只作最簡單的功能測試,因此部署了一套單節點但副本的 TiDB,涉及到了如下的三個模塊:
3.1 TiUP 部署模板文件
# # Global variables are applied to all deployments and used as the default value of # # the deployments if a specific deployment value is missing. global: user: "tidb" ssh_port: 22 deploy_dir: "/opt/tidb-c1/" data_dir: "/opt/tidb-c1/data/" # # Monitored variables are applied to all the machines. #monitored: # node_exporter_port: 19100 # blackbox_exporter_port: 39115 # deploy_dir: "/opt/tidb-c3/monitored" # data_dir: "/opt/tidb-c3/data/monitored" # log_dir: "/opt/tidb-c3/log/monitored" # # Server configs are used to specify the runtime configuration of TiDB components. # # All configuration items can be found in TiDB docs: # # - TiDB: https://pingcap.com/docs/stable/reference/configuration/tidb-server/configuration-file/ # # - TiKV: https://pingcap.com/docs/stable/reference/configuration/tikv-server/configuration-file/ # # - PD: https://pingcap.com/docs/stable/reference/configuration/pd-server/configuration-file/ # # All configuration items use points to represent the hierarchy, e.g: # # readpool.storage.use-unified-pool # # # # You can overwrite this configuration via the instance-level `config` field. server_configs: tidb: log.slow-threshold: 300 binlog.enable: false binlog.ignore-error: false tikv-client.copr-cache.enable: true tikv: server.grpc-concurrency: 4 raftstore.apply-pool-size: 2 raftstore.store-pool-size: 2 rocksdb.max-sub-compactions: 1 storage.block-cache.capacity: "16GB" readpool.unified.max-thread-count: 12 readpool.storage.use-unified-pool: false readpool.coprocessor.use-unified-pool: true raftdb.rate-bytes-per-sec: 0 pd: schedule.leader-schedule-limit: 4 schedule.region-schedule-limit: 2048 schedule.replica-schedule-limit: 64 pd_servers: - host: 192.168.12.21 ssh_port: 22 name: "pd-2" client_port: 12379 peer_port: 12380 deploy_dir: "/opt/tidb-c1/pd-12379" data_dir: "/opt/tidb-c1/data/pd-12379" log_dir: "/opt/tidb-c1/log/pd-12379" numa_node: "0" # # The following configs are used to overwrite the `server_configs.pd` values. config: schedule.max-merge-region-size: 20 schedule.max-merge-region-keys: 200000 tidb_servers: - host: 192.168.12.21 ssh_port: 22 port: 14000 status_port: 12080 deploy_dir: "/opt/tidb-c1/tidb-14000" log_dir: "/opt/tidb-c1/log/tidb-14000" numa_node: "0" # # The following configs are used to overwrite the `server_configs.tidb` values. config: log.slow-query-file: tidb-slow-overwrited.log tikv-client.copr-cache.enable: true tikv_servers: - host: 192.168.12.21 ssh_port: 22 port: 12160 status_port: 12180 deploy_dir: "/opt/tidb-c1/tikv-12160" data_dir: "/opt/tidb-c1/data/tikv-12160" log_dir: "/opt/tidb-c1/log/tikv-12160" numa_node: "0" # # The following configs are used to overwrite the `server_configs.tikv` values. config: server.grpc-concurrency: 4 #server.labels: { zone: "zone1", dc: "dc1", host: "host1" } #monitoring_servers: # - host: 192.168.12.21 # ssh_port: 22 # port: 19090 # deploy_dir: "/opt/tidb-c1/prometheus-19090" # data_dir: "/opt/tidb-c1/data/prometheus-19090" # log_dir: "/opt/tidb-c1/log/prometheus-19090" #grafana_servers: # - host: 192.168.12.21 # port: 13000 # deploy_dir: "/opt/tidb-c1/grafana-13000" #alertmanager_servers: # - host: 192.168.12.21 # ssh_port: 22 # web_port: 19093 # cluster_port: 19094 # deploy_dir: "/opt/tidb-c1/alertmanager-19093" # data_dir: "/opt/tidb-c1/data/alertmanager-19093" # log_dir: "/opt/tidb-c1/log/alertmanager-19093"
3.2 TiDB Cluster 環境
本文重點非部署 TiDB Cluster,做爲快速實驗環境,只在一臺機器上部署單副本的 TiDB Cluster 集羣。不須要部署監控環境。
[root@r20 topology]# tiup cluster display tidb-c1-v409 Starting component `cluster`: /root/.tiup/components/cluster/v1.3.2/tiup-cluster display tidb-c1-v409 Cluster type: tidb Cluster name: tidb-c1-v409 Cluster version: v4.0.9 SSH type: builtin Dashboard URL: http://192.168.12.21:12379/dashboard ID Role Host Ports OS/Arch Status Data Dir Deploy Dir -- ---- ---- ----- ------- ------ -------- ---------- 192.168.12.21:12379 pd 192.168.12.21 12379/12380 linux/x86_64 Up|L|UI /opt/tidb-c1/data/pd-12379 /opt/tidb-c1/pd-12379 192.168.12.21:14000 tidb 192.168.12.21 14000/12080 linux/x86_64 Up - /opt/tidb-c1/tidb-14000 192.168.12.21:12160 tikv 192.168.12.21 12160/12180 linux/x86_64 Up /opt/tidb-c1/data/tikv-12160 /opt/tidb-c1/tikv-12160 Total nodes: 4
建立用於測試的表
mysql> show create table t1; +-------+-------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +-------+-------------------------------------------------------------------------------------------------------------------------------+ | t1 | CREATE TABLE `t1` ( `id` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin | +-------+-------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
在本實驗中單獨配置 Zookeeper 環境,爲 Kafka 和 Flink 環境提供服務。
做爲實驗演示方案,只部署單機環境。
4.1 解壓 Zookeeper 包
[root@r24 soft]# tar vxzf apache-zookeeper-3.6.2-bin.tar.gz [root@r24 soft]# mv apache-zookeeper-3.6.2-bin /opt/zookeeper
4.2 部署用於 Zookeeper 的 jre
[root@r24 soft]# tar vxzf jre1.8.0_281.tar.gz [root@r24 soft]# mv jre1.8.0_281 /opt/zookeeper/jre
修改 /opt/zookeeper/bin/zkEnv.sh 文件,增長 JAVA_HOME 環境變量
## add bellowing env var in the head of zkEnv.sh JAVA_HOME=/opt/zookeeper/jre
4.3 建立 Zookeeper 的配置文件
[root@r24 conf]# cat zoo.cfg | grep -v "#" tickTime=2000 initLimit=10 syncLimit=5 dataDir=/opt/zookeeper/data clientPort=2181
4.4 啓動 Zookeeper
[root@r24 bin]# /opt/zookeeper/bin/zkServer.sh start
4.5 檢查 Zookeeper 的狀態
## check zk status [root@r24 bin]# ./zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/zookeeper/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Client SSL: false. Mode: standalone ## check OS port status [root@r24 bin]# netstat -ntlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 942/sshd tcp6 0 0 :::2181 :::* LISTEN 15062/java tcp6 0 0 :::8080 :::* LISTEN 15062/java tcp6 0 0 :::22 :::* LISTEN 942/sshd tcp6 0 0 :::44505 :::* LISTEN 15062/java ## use zkCli tool to check zk connection [root@r24 bin]# ./zkCli.sh -server 192.168.12.24:2181
4.6 關於 Zookeeper 的建議
我我的有一個關於 Zookeeper 的不成熟的小建議:
Zookeeper 集羣版本必定要開啓網絡監控。特別是要關注 system metrics 裏面的 network bandwidth。
Kafka 是一個分佈式流處理平臺,主要應用於兩大類的應用中:
構造實時流數據管道,它能夠在系統或應用之間可靠地獲取數據。 (至關於message queue)
構建實時流式應用程序,對這些流數據進行轉換或者影響。 (就是流處理,經過kafka stream topic和topic之間內部進行變化)
Kafka 有四個核心的 API:
在本實驗中只作功能性驗證,只搭建一個單機版的 Kafka 環境。
5.1 下載並解壓 Kafka
[root@r22 soft]# tar vxzf kafka_2.13-2.7.0.tgz [root@r22 soft]# mv kafka_2.13-2.7.0 /opt/kafka
5.2 部署用於 Kafka 的 jre
[root@r22 soft]# tar vxzf jre1.8.0_281.tar.gz [root@r22 soft]# mv jre1.8.0_281 /opt/kafka/jre
修改 Kafka 的 jre 環境變量
[root@r22 bin]# vim /opt/kafka/bin/kafka-run-class.sh ## add bellowing line in the head of kafka-run-class.sh JAVA_HOME=/opt/kafka/jre
5.3 修改 Kafka 配置文件
修改 Kafka 配置文件 /opt/kafka/config/server.properties
## change bellowing variable in /opt/kafka/config/server.properties broker.id=0 listeners=PLAINTEXT://192.168.12.22:9092 log.dirs=/opt/kafka/logs zookeeper.connect=i192.168.12.24:2181
5.4 啓動 Kafka
[root@r22 bin]# /opt/kafka/bin/kafka-server-start.sh /opt/kafka/config/server.properties
5.5 查看 Kafka 的版本信息
Kafka 並無提供 --version 的 optional 來查看 Kafka 的版本信息。
[root@r22 ~]# ll /opt/kafka/libs/ | grep kafka -rw-r--r-- 1 root root 4929521 Dec 16 09:02 kafka_2.13-2.7.0.jar -rw-r--r-- 1 root root 821 Dec 16 09:03 kafka_2.13-2.7.0.jar.asc -rw-r--r-- 1 root root 41793 Dec 16 09:02 kafka_2.13-2.7.0-javadoc.jar -rw-r--r-- 1 root root 821 Dec 16 09:03 kafka_2.13-2.7.0-javadoc.jar.asc -rw-r--r-- 1 root root 892036 Dec 16 09:02 kafka_2.13-2.7.0-sources.jar -rw-r--r-- 1 root root 821 Dec 16 09:03 kafka_2.13-2.7.0-sources.jar.asc ... ...
其中 2.13 是 scale 的版本信息,2.7.0 是 Kafka 的版本信息。
Apache Flink 是一個框架和分佈式處理引擎,用於在無邊界和有邊界數據流上進行有狀態的計算。Flink 能在全部常見集羣環境中運行,並能之內存速度和任意規模進行計算。
支持高吞吐、低延遲、高性能的分佈式處理框架 Apache Flink 是一個框架和分佈式處理引擎,用於對無界和有界數據流進行有狀態計算。Flink被設計在全部常見的集羣環境中運行,之內存執行速度和任意規模來執行計算。
本實驗只作功能性測試,僅部署單機 Flink 環境。
6.1 下載並分發 Flink
[root@r23 soft]# tar vxzf flink-1.12.1-bin-scala_2.11.tgz [root@r23 soft]# mv flink-1.12.1 /opt/flink
6.2 部署 Flink 的 jre
[root@r23 soft]# tar vxzf jre1.8.0_281.tar.gz [root@r23 soft]# mv jre1.8.0_281 /opt/flink/jre
6.3 添加 Flink 須要的 lib
Flink 消費 Kafka 數據,須要 flink-sql-connector-kafka 包。
Flink 連接 MySQL/TiDB,須要 flink-connector-jdbc 包。
[root@r23 soft]# mv flink-sql-connector-kafka_2.12-1.12.0.jar /opt/flink/lib/ [root@r23 soft]# mv flink-connector-jdbc_2.12-1.12.0.jar /opt/flink/lib/
6.4 修改 Flink 配置文件
## add or modify bellowing lines in /opt/flink/conf/flink-conf.yaml jobmanager.rpc.address: 192.168.12.23 env.java.home: /opt/flink/jre
6.5 啓動 Flink
[root@r23 ~]# /opt/flink/bin/start-cluster.sh Starting cluster. Starting standalonesession daemon on host r23. Starting taskexecutor daemon on host r23.
6.6 查看 Flink GUI
7.1 解壓 MySQL package
[root@r25 soft]# tar vxf mysql-8.0.23-linux-glibc2.12-x86_64.tar.xz [root@r25 soft]# mv mysql-8.0.23-linux-glibc2.12-x86_64 /opt/mysql/
7.2 建立 MySQL Service 文件
[root@r25 ~]# touch /opt/mysql/support-files/mysqld.service [root@r25 support-files]# cat mysqld.service [Unit] Description=MySQL 8.0 database server After=syslog.target After=network.target [Service] Type=simple User=mysql Group=mysql #ExecStartPre=/usr/libexec/mysql-check-socket #ExecStartPre=/usr/libexec/mysql-prepare-db-dir %n # Note: we set --basedir to prevent probes that might trigger SELinux alarms, # per bug #547485 ExecStart=/opt/mysql/bin/mysqld_safe #ExecStartPost=/opt/mysql/bin/mysql-check-upgrade #ExecStopPost=/opt/mysql/bin/mysql-wait-stop # Give a reasonable amount of time for the server to start up/shut down TimeoutSec=300 # Place temp files in a secure directory, not /tmp PrivateTmp=true Restart=on-failure RestartPreventExitStatus=1 # Sets open_files_limit LimitNOFILE = 10000 # Set enviroment variable MYSQLD_PARENT_PID. This is required for SQL restart command. Environment=MYSQLD_PARENT_PID=1 [Install] WantedBy=multi-user.target ## copy mysqld.service to /usr/lib/systemd/system/ [root@r25 support-files]# cp mysqld.service /usr/lib/systemd/system/
7.3 建立 my.cnf 文件
[root@r34 opt]# cat /etc/my.cnf [mysqld] port=3306 basedir=/opt/mysql datadir=/opt/mysql/data socket=/opt/mysql/data/mysql.socket max_connections = 100 default-storage-engine = InnoDB character-set-server=utf8 log-error = /opt/mysql/log/error.log slow_query_log = 1 long-query-time = 30 slow_query_log_file = /opt/mysql/log/show.log min_examined_row_limit = 1000 log-slow-slave-statements log-queries-not-using-indexes #skip-grant-tables
7.4 初始化並啓動 MySQL
[root@r25 ~]# /opt/mysql/bin/mysqld --initialize --user=mysql --console [root@r25 ~]# chown -R mysql:mysql /opt/mysql [root@r25 ~]# systemctl start mysqld ## check mysql temp passord from /opt/mysql/log/error.log 2021-02-24T02:45:47.316406Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: I?nDjijxa3>-
7.5 建立一個新的 MySQL 用戶用以鏈接 Canal
## change mysql temp password firstly mysql> alter user 'root'@'localhost' identified by 'mysql'; Query OK, 0 rows affected (0.00 sec) ## create a management user 'root'@'%' mysql> create user 'root'@'%' identified by 'mysql'; Query OK, 0 rows affected (0.01 sec) mysql> grant all privileges on *.* to 'root'@'%'; Query OK, 0 rows affected (0.00 sec) ## create a canal replication user 'canal'@'%' mysql> create user 'canal'@'%' identified by 'canal'; Query OK, 0 rows affected (0.01 sec) mysql> grant select, replication slave, replication client on *.* to 'canal'@'%'; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
7.6 在 MySQL 中建立用於測試的表
mysql> show create table test.t2; +-------+----------------------------------------------------------------------------------+ | Table | Create Table | +-------+----------------------------------------------------------------------------------+ | t2 | CREATE TABLE `t2` ( `id` int DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8 | +-------+----------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
Canal 主要用途是基於 MySQL 數據庫增量日誌解析,提供增量數據訂閱和消費。
早期阿里巴巴由於杭州和美國雙機房部署,存在跨機房同步的業務需求,實現方式主要是基於業務 trigger 獲取增量變動。
從 2010 年開始,業務逐步嘗試數據庫日誌解析獲取增量變動進行同步,由此衍生出了大量的數據庫增量訂閱和消費業務。
基於日誌增量訂閱和消費的業務包括:
當前的 canal 支持源端 MySQL 版本包括 5.1.x , 5.5.x , 5.6.x , 5.7.x , 8.0.x。
8.1 解壓 Canal 包
[root@r26 soft]# mkdir /opt/canal && tar vxzf canal.deployer-1.1.4.tar.gz -C /opt/canal
8.2 部署 Canal 的 jre
[root@r26 soft]# tar vxzf jre1.8.0_281.tar.gz [root@r26 soft]# mv jre1.8.0_281 /opt/canal/jre ## configue jre, add bellowing line in the head of /opt/canal/bin/startup.sh JAVA=/opt/canal/jre/bin/java
8.3 修改 Canal 的配置文件
修改 /opt/canal/conf/canal.properties 配置文件
## modify bellowing configuration canal.zkServers =192.168.12.24:2181 canal.serverMode = kafka canal.destinations = example ## 須要在 /opt/canal/conf 目錄下建立一個 example 文件夾,用於存放 destination 的配置 canal.mq.servers = 192.168.12.22:9092 修改 /opt/canal/conf/example/instance.properties 配置文件 ## modify bellowing configuration canal.instance.master.address=192.168.12.25:3306 canal.instance.dbUsername=canal canal.instance.dbPassword=canal canal.instance.filter.regex=.*\\..* ## 過濾數據庫的表 canal.mq.topic=canal-kafka
9.1 MySQL Binlog -> Canal -> Kafka 通路
9.1.1 查看 MySQL Binlog 信息
查看 MySQL Binlog 信息,確保 Binlog 是正常的。
mysql> show master status; +---------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +---------------+----------+--------------+------------------+-------------------+ | binlog.000001 | 2888 | | | | +---------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
9.1.2 在 Kafka 中建立一個 Topic
在 Kafka 中建立一個 Topic canal-kafka,這個Topic 的名字要與 Canal 配置文件 /opt/canal/conf/example/instance.properties 中的 canal.mq.topic=canal-kafka 對應:
[root@r22 kafka]# /opt/kafka/bin/kafka-topics.sh --create \ > --zookeeper 192.168.12.24:2181 \ > --config max.message.bytes=12800000 \ > --config flush.messages=1 \ > --replication-factor 1 \ > --partitions 1 \ > --topic canal-kafka Created topic canal-kafka. [2021-02-24 01:51:55,050] INFO [ReplicaFetcherManager on broker 0] Removed fetcher for partitions Set(canal-kafka-0) (kafka.server.ReplicaFetcherManager) [2021-02-24 01:51:55,052] INFO [Log partition=canal-kafka-0, dir=/opt/kafka/logs] Loading producer state till offset 0 with message format version 2 (kafka.log.Log) [2021-02-24 01:51:55,053] INFO Created log for partition canal-kafka-0 in /opt/kafka/logs/canal-kafka-0 with properties {compression.type -> producer, message.downconversion.enable -> true, min.insync.replicas -> 1, segment.jitter.ms -> 0, cleanup.policy -> [delete], flush.ms -> 9223372036854775807, segment.bytes -> 1073741824, retention.ms -> 604800000, flush.messages -> 1, message.format.version -> 2.7-IV2, file.delete.delay.ms -> 60000, max.compaction.lag.ms -> 9223372036854775807, max.message.bytes -> 12800000, min.compaction.lag.ms -> 0, message.timestamp.type -> CreateTime, preallocate -> false, min.cleanable.dirty.ratio -> 0.5, index.interval.bytes -> 4096, unclean.leader.election.enable -> false, retention.bytes -> -1, delete.retention.ms -> 86400000, segment.ms -> 604800000, message.timestamp.difference.max.ms -> 9223372036854775807, segment.index.bytes -> 10485760}. (kafka.log.LogManager) [2021-02-24 01:51:55,053] INFO [Partition canal-kafka-0 broker=0] No checkpointed highwatermark is found for partition canal-kafka-0 (kafka.cluster.Partition) [2021-02-24 01:51:55,053] INFO [Partition canal-kafka-0 broker=0] Log loaded for partition canal-kafka-0 with initial high watermark 0 (kafka.cluster.Partition)
查看 Kafka 中全部的 Topic:
[root@r22 kafka]# /opt/kafka/bin/kafka-topics.sh --list --zookeeper 192.168.12.24:2181 __consumer_offsets canal-kafka ticdc-test
查看 Kafka 中 Topic ticdc-test 的信息:
[root@r22 ~]# /opt/kafka/bin/kafka-topics.sh --describe --zookeeper 192.168.12.24:2181 --topic canal-kafka Topic: ticdc-test PartitionCount: 1 ReplicationFactor: 1 Configs: max.message.bytes=12800000,flush.messages=1 Topic: ticdc-test Partition: 0 Leader: 0 Replicas: 0 Isr: 0
9.1.3 啓動 Canal
在啓動 Canal 以前,須要在 Canal 節點上查看一下端口的狀況:
## check MySQL 3306 port ## canal.instance.master.address=192.168.12.25:3306 [root@r26 bin]# telnet 192.168.12.25 3306 ## check Kafka 9092 port ## canal.mq.servers = 192.168.12.22:9092 [root@r26 bin]# telnet 192.168.12.22 9092 ## check zookeeper 2181 port ## canal.zkServers = 192.168.12.24:2181 [root@r26 bin]# telnet 192.168.12.24 2181
啓動 Canal:
[root@r26 bin]# /opt/canal/bin/startup.sh cd to /opt/canal/bin for workaround relative path LOG CONFIGURATION : /opt/canal/bin/../conf/logback.xml canal conf : /opt/canal/bin/../conf/canal.properties CLASSPATH :/opt/canal/bin/../conf:/opt/canal/bin/../lib/zookeeper-3.4.5.jar:/opt/canal/bin/../lib/zkclient-0.10.jar:/opt/canal/bin/../lib/spring-tx-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-orm-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-jdbc-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-expression-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-core-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-context-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-beans-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/spring-aop-3.2.18.RELEASE.jar:/opt/canal/bin/../lib/snappy-java-1.1.7.1.jar:/opt/canal/bin/../lib/snakeyaml-1.19.jar:/opt/canal/bin/../lib/slf4j-api-1.7.12.jar:/opt/canal/bin/../lib/simpleclient_pushgateway-0.4.0.jar:/opt/canal/bin/../lib/simpleclient_httpserver-0.4.0.jar:/opt/canal/bin/../lib/simpleclient_hotspot-0.4.0.jar:/opt/canal/bin/../lib/simpleclient_common-0.4.0.jar:/opt/canal/bin/../lib/simpleclient-0.4.0.jar:/opt/canal/bin/../lib/scala-reflect-2.11.12.jar:/opt/canal/bin/../lib/scala-logging_2.11-3.8.0.jar:/opt/canal/bin/../lib/scala-library-2.11.12.jar:/opt/canal/bin/../lib/rocketmq-srvutil-4.5.2.jar:/opt/canal/bin/../lib/rocketmq-remoting-4.5.2.jar:/opt/canal/bin/../lib/rocketmq-logging-4.5.2.jar:/opt/canal/bin/../lib/rocketmq-common-4.5.2.jar:/opt/canal/bin/../lib/rocketmq-client-4.5.2.jar:/opt/canal/bin/../lib/rocketmq-acl-4.5.2.jar:/opt/canal/bin/../lib/protobuf-java-3.6.1.jar:/opt/canal/bin/../lib/oro-2.0.8.jar:/opt/canal/bin/../lib/netty-tcnative-boringssl-static-1.1.33.Fork26.jar:/opt/canal/bin/../lib/netty-all-4.1.6.Final.jar:/opt/canal/bin/../lib/netty-3.2.2.Final.jar:/opt/canal/bin/../lib/mysql-connector-java-5.1.47.jar:/opt/canal/bin/../lib/metrics-core-2.2.0.jar:/opt/canal/bin/../lib/lz4-java-1.4.1.jar:/opt/canal/bin/../lib/logback-core-1.1.3.jar:/opt/canal/bin/../lib/logback-classic-1.1.3.jar:/opt/canal/bin/../lib/kafka-clients-1.1.1.jar:/opt/canal/bin/../lib/kafka_2.11-1.1.1.jar:/opt/canal/bin/../lib/jsr305-3.0.2.jar:/opt/canal/bin/../lib/jopt-simple-5.0.4.jar:/opt/canal/bin/../lib/jctools-core-2.1.2.jar:/opt/canal/bin/../lib/jcl-over-slf4j-1.7.12.jar:/opt/canal/bin/../lib/javax.annotation-api-1.3.2.jar:/opt/canal/bin/../lib/jackson-databind-2.9.6.jar:/opt/canal/bin/../lib/jackson-core-2.9.6.jar:/opt/canal/bin/../lib/jackson-annotations-2.9.0.jar:/opt/canal/bin/../lib/ibatis-sqlmap-2.3.4.726.jar:/opt/canal/bin/../lib/httpcore-4.4.3.jar:/opt/canal/bin/../lib/httpclient-4.5.1.jar:/opt/canal/bin/../lib/h2-1.4.196.jar:/opt/canal/bin/../lib/guava-18.0.jar:/opt/canal/bin/../lib/fastsql-2.0.0_preview_973.jar:/opt/canal/bin/../lib/fastjson-1.2.58.jar:/opt/canal/bin/../lib/druid-1.1.9.jar:/opt/canal/bin/../lib/disruptor-3.4.2.jar:/opt/canal/bin/../lib/commons-logging-1.1.3.jar:/opt/canal/bin/../lib/commons-lang3-3.4.jar:/opt/canal/bin/../lib/commons-lang-2.6.jar:/opt/canal/bin/../lib/commons-io-2.4.jar:/opt/canal/bin/../lib/commons-compress-1.9.jar:/opt/canal/bin/../lib/commons-codec-1.9.jar:/opt/canal/bin/../lib/commons-cli-1.2.jar:/opt/canal/bin/../lib/commons-beanutils-1.8.2.jar:/opt/canal/bin/../lib/canal.store-1.1.4.jar:/opt/canal/bin/../lib/canal.sink-1.1.4.jar:/opt/canal/bin/../lib/canal.server-1.1.4.jar:/opt/canal/bin/../lib/canal.protocol-1.1.4.jar:/opt/canal/bin/../lib/canal.prometheus-1.1.4.jar:/opt/canal/bin/../lib/canal.parse.driver-1.1.4.jar:/opt/canal/bin/../lib/canal.parse.dbsync-1.1.4.jar:/opt/canal/bin/../lib/canal.parse-1.1.4.jar:/opt/canal/bin/../lib/canal.meta-1.1.4.jar:/opt/canal/bin/../lib/canal.instance.spring-1.1.4.jar:/opt/canal/bin/../lib/canal.instance.manager-1.1.4.jar:/opt/canal/bin/../lib/canal.instance.core-1.1.4.jar:/opt/canal/bin/../lib/canal.filter-1.1.4.jar:/opt/canal/bin/../lib/canal.deployer-1.1.4.jar:/opt/canal/bin/../lib/canal.common-1.1.4.jar:/opt/canal/bin/../lib/aviator-2.2.1.jar:/opt/canal/bin/../lib/aopalliance-1.0.jar: cd to /opt/canal/bin for continue
9.1.4 查看 Canal 日誌
查看 /opt/canal/logs/example/example.log
2021-02-24 01:41:40.293 [destination = example , address = /192.168.12.25:3306 , EventParser] WARN c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - ---> begin to find start position, it will be long time for reset or first position 2021-02-24 01:41:40.293 [destination = example , address = /192.168.12.25:3306 , EventParser] WARN c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - prepare to find start position just show master status 2021-02-24 01:41:40.542 [destination = example , address = /192.168.12.25:3306 , EventParser] WARN c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - ---> find start position successfully, EntryPosition[included=false,journalName=binlog.000001,position=4,serverId=1,gtid=<null>,timestamp=1614134832000] cost : 244ms , the next step is binlog dump
9.1.5 查看 Kafka 中 consumer 信息
在 MySQL 中插入一條測試信息:
mysql> insert into t2 values(1); Query OK, 1 row affected (0.00 sec)
查看 consumer 的信息,已經有了剛纔插入的測試數據:
/opt/kafka/bin/kafka-console-consumer.sh --bootstrap-server 192.168.12.22:9092 --topic canal-kafka --from-beginning {"data":null,"database":"test","es":1614151725000,"id":2,"isDdl":false,"mysqlType":null,"old":null,"pkNames":null,"sql":"create database test","sqlType":null,"table":"","ts":1614151725890,"type":"QUERY"} {"data":null,"database":"test","es":1614151746000,"id":3,"isDdl":true,"mysqlType":null,"old":null,"pkNames":null,"sql":"create table t2(id int)","sqlType":null,"table":"t2","ts":1614151746141,"type":"CREATE"} {"data":[{"id":"1"}],"database":"test","es":1614151941000,"id":4,"isDdl":false,"mysqlType":{"id":"int"},"old":null,"pkNames":null,"sql":"","sqlType":{"id":4},"table":"t2","ts":1614151941235,"type":"INSERT"}
9.2 Kafka -> Flink 通路
在 Flink 中建立 t2 表,connector 類型爲 kafka。
## create a test table t2 in Flink Flink SQL> create table t2(id int) > WITH ( > 'connector' = 'kafka', > 'topic' = 'canal-kafka', > 'properties.bootstrap.servers' = '192.168.12.22:9092', > 'properties.group.id' = 'canal-kafka-consumer-group', > 'format' = 'canal-json', > 'scan.startup.mode' = 'latest-offset' > ); Flink SQL> select * from t1;
在 MySQL 中在插入一條測試數據:
mysql> insert into test.t2 values(2); Query OK, 1 row affected (0.00 sec)
從 Flink 中能夠實時同步數據:
Flink SQL> select * from t1; Refresh: 1 s Page: Last of 1 Updated: 02:49:27.366 id 2
9.3 Flink -> TiDB 通路
9.3.1 在 下游的 TiDB 中建立用於測試的表
[root@r20 soft]# mysql -uroot -P14000 -hr21 mysql> create table t3 (id int); Query OK, 0 rows affected (0.31 sec)
9.3.2 在 Flink 中建立測試表
Flink SQL> CREATE TABLE t3 ( > id int > ) with ( > 'connector' = 'jdbc', > 'url' = 'jdbc:mysql://192.168.12.21:14000/test', > 'table-name' = 't3', > 'username' = 'root', > 'password' = 'mysql' > ); Flink SQL> insert into t3 values(3); [INFO] Submitting SQL update statement to the cluster... [INFO] Table update statement has been successfully submitted to the cluster: Job ID: a0827487030db177ee7e5c8575ef714e
9.3.3 在下游 TiDB 中查看插入的數據
mysql> select * from test.t3; +------+ | id | +------+ | 3 | +------+ 1 row in set (0.00 sec)
原文連接本文爲阿里雲原創內容,未經容許不得轉載。