集群配置
canal-admin的安装不再累述，可翻看之前文章，本文主要记录canal-admin集群环境的配置和踩坑记录
新建集群
填写zk的集群信息
主要参数说明
canal持久化数据到zookeeper上的更新频率
canal.file.flush.period = 1000
memory store RingBuffer size, should be Math.pow(2,n)
canal.instance.memory.buffer.size = 16384
memory store RingBuffer used memory unit size , default 1kb
canal.instance.memory.buffer.memunit = 1024
meory store gets mode used MEMSIZE or ITEMSIZE
canal.instance.memory.batch.mode = MEMSIZE
canal.instance.memory.rawEntry = true
是否开启心跳检查
canal.instance.detecting.enable = false
心跳检查sql
canal.instance.detecting.sql = select 1
心跳检查频率
canal.instance.detecting.interval.time = 3
心跳检查失败重试次数
canal.instance.detecting.retry.threshold = 3
心跳检查失败后，是否开启自动mysql自动切换，mysql主从地址可在具体instance中配置
canal.instance.detecting.heartbeatHaEnable = false
support maximum transaction size, more than the size of the transaction will be cut into multiple transactions delivery
canal.instance.transaction.size = 1024
mysql fallback connected to new master should fallback times
canal.instance.fallbackIntervalInSeconds = 60
network config 网络相关配置
canal.instance.network.receiveBufferSize = 16384
canal.instance.network.sendBufferSize = 16384
canal.instance.network.soTimeout = 30
binlog filter config
canal.instance.filter.druid.ddl = true
忽略dcl
canal.instance.filter.query.dcl = true
canal.instance.filter.query.dml = false
忽略ddl
canal.instance.filter.query.ddl = true
是否忽略binlog表结构获取失败的异常
canal.instance.filter.table.error = false
canal.instance.filter.rows = false
canal.instance.filter.transaction.entry = false
binlog format/image check
canal.instance.binlog.format = ROW,STATEMENT,MIXED
canal.instance.binlog.image = FULL,MINIMAL,NOBLOB
binlog ddl isolation
canal.instance.get.ddl.isolation = false
parallel parser config 开启binlog并行解析模式
canal.instance.parser.parallel = true
concurrent thread number, default 60% available processors, suggest not to exceed Runtime.getRuntime().availableProcessors()
canal.instance.parser.parallelThreadSize = 16
disruptor ringbuffer size, must be power of 2
canal.instance.parser.parallelBufferSize = 256
instance地址配置，不写默认扫描conf目录下所有instance配置
canal.destinations =
canal.conf.dir = ../conf
canal.auto.scan = true
canal.auto.scan.interval = 5
持久化的方式主要是写入zookeeper，保证数据集群共享
canal.instance.global.spring.xml = classpath:spring/default-instance.xml
mq地址
canal.mq.servers = 192.168.199.122:9092,192.168.199.123:9092,192.168.199.124:9092
重试次数
canal.mq.retries = 3
批处理大小
canal.mq.batchSize = 16384
canal.mq.maxRequestSize = 1048576
延时时间
canal.mq.lingerMs = 100
canal.mq.bufferMemory = 33554432
获取canal数据的批次大小
canal.mq.canalBatchSize = 50
获取canal数据的超时时间
canal.mq.canalGetTimeout = 100
ture代表json格式
canal.mq.flatMessage = true
不启动数据压缩
canal.mq.compressionType = none
主副全部成功才ack
canal.mq.acks = all
canal.mq.properties. =
canal.mq.producerGroup = test
Set this value to "cloud", if you want open message trace feature in aliyun.
canal.mq.accessChannel = local
新建Server
在各个节点运行sh bin/startup.sh local
在Server列表即可看到启动了三个canal-server
新建Instance
新建Instance，主要配置参数
只同步test数据库的sc_test表，.*\\..*代表同步所有表
canal.instance.filter.regex=test\.sc_test
mq topic名称
canal.mq.topic=wcc-scm
由于我们项目需要保证数据的顺序性，使用单topic单分区配置，性能会下降，消费者QPS：2-3k，对我们项目来说也是足够的了
canal.mq.partition=0
踩的坑
由于我们使用的是阿里云的RDS数据库，阿里云RDS是自动清理binlog，会导致canal读取binlog失败java.io.IOException: Received error packet: errno = 1236, sqlstate = HY000 errmsg = Could not find first log file name in binary log index file
可将binlog文件上传阿里云OSS服务器，在instance配置中新增
` canal.instance.rds.accesskey=
canal.instance.rds.secretkey=
canal.instance.rds.instanceId=`
吐槽下：运维点binlog一键上传`到OSS，没有任何提示，并没有成功，好歹给个失败原因提示啊。。。