flume容错（故障转移）
本文共 2786 字，大约阅读时间需要 9 分钟。
flume容错（故障转移）
1.概念：
②通常用于解决单点故障，给容易出故障的地方设置备份
③备份越多，容错能力越强，资源浪费越严重
2.脚本编写
hadoop01：
创建exec-avro-failover.properties#agent1 nameagent1.channels = c1agent1.sources = r1agent1.sinks = k1 k2#set gruopagent1.sinkgroups = g1#set channelagent1.channels.c1.type = memoryagent1.channels.c1.capacity = 1000agent1.channels.c1.transactionCapacity = 100agent1.sources.r1.channels = c1agent1.sources.r1.type = execagent1.sources.r1.command = tail -F /home/xiaokang/logs/456.log# set sink1agent1.sinks.k1.channel = c1agent1.sinks.k1.type = avroagent1.sinks.k1.hostname = hadoop02agent1.sinks.k1.port = 52020# set sink2agent1.sinks.k2.channel = c1agent1.sinks.k2.type = avroagent1.sinks.k2.hostname = hadoop03agent1.sinks.k2.port = 52020#set sink groupagent1.sinkgroups.g1.sinks = k1 k2#set failover 设置故障转移agent1.sinkgroups.g1.processor.type = failover#k1首先消费数据，k1对应的是hadoop02agent1.sinkgroups.g1.processor.priority.k1 = 10agent1.sinkgroups.g1.processor.priority.k2 = 1agent1.sinkgroups.g1.processor.maxpenalty = 10000
hadoop02：
创建avro-logger-failover.properties# Name the components on this agenta1.sources = r1a1.sinks = k1a1.channels = c1# Describe/configure the sourcea1.sources.r1.type = avroa1.sources.r1.channels = c1a1.sources.r1.bind = hadoop02a1.sources.r1.port = 52020# Describe the sinka1.sinks.k1.type = logger# Use a channel which buffers events in memorya1.channels.c1.type = memorya1.channels.c1.capacity = 1000a1.channels.c1.transactionCapacity = 100# Bind the source and sink to the channela1.sources.r1.channels = c1a1.sinks.k1.channel = c1
hadoop03：
创建avro-logger-failover.properties# Name the components on this agenta1.sources = r1a1.sinks = k1a1.channels = c1# Describe/configure the sourcea1.sources.r1.type = avroa1.sources.r1.channels = c1a1.sources.r1.bind = hadoop02a1.sources.r1.port = 52020# Describe the sinka1.sinks.k1.type = logger# Use a channel which buffers events in memorya1.channels.c1.type = memorya1.channels.c1.capacity = 1000a1.channels.c1.transactionCapacity = 100# Bind the source and sink to the channela1.sources.r1.channels = c1a1.sinks.k1.channel = c
3.flume启动
[xiaokang@hadoop03 ~]$ flume-ng agent -n a1 -c /opt/software/flume-1.9.0/conf/ -f flume_scripts/avro-logger-failover.properties -Dflume.root.logger=INFO,console[xiaokang@hadoop02 ~]$ flume-ng agent -n a1 -c /opt/software/flume-1.9.0/conf/ -f flume_scripts/avro-logger-failover.properties -Dflume.root.logger=INFO,console[xiaokang@hadoop01 ~]$ flume-ng agent -n agent1 -c /opt/software/flume-1.9.0/conf/ -f flume_scripts/exec-avro-failover.properties -Dflume.root.logger=INFO,console
4.验证
[xiaokang@hadoop01 ~]$ while true; do date >> /home/xiaokang/logs/456.log ; done
hadoop02开始消费数据
手动结束hadoop02的flume进程之后，hadoop01立即报错，显示hadoop02连接失败。此时hadoop03代替hadoop02执行任务，如下图所示： 
转载地址：http://ijpaz.baihongyu.com/
你可能感兴趣的文章
MYSQL8.0以上忘记root密码
查看>>
Mysql8.0以上重置初始密码的方法
查看>>
mysql8.0新特性-自增变量的持久化
查看>>
Mysql8.0注意url变更写法
查看>>
Mysql8.0的特性
查看>>
MySQL8修改密码报错ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
查看>>
MySQL8修改密码的方法
查看>>
Mysql8在Centos上安装后忘记root密码如何重新设置
查看>>
Mysql8在Windows上离线安装时忘记root密码
查看>>
MySQL8找不到my.ini配置文件以及报sql_mode=only_full_group_by解决方案
查看>>
mysql8的安装与卸载
查看>>
MySQL8，体验不一样的安装方式！
查看>>
MySQL: Host '127.0.0.1' is not allowed to connect to this MySQL server
查看>>
Mysql: 对换（替换）两条记录的同一个字段值
查看>>
mysql:Can‘t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock‘解决方法
查看>>
MYSQL:基础——3N范式的表结构设计
查看>>
MYSQL:基础——触发器
查看>>
Mysql:连接报错“closing inbound before receiving peer‘s close_notify”
查看>>
mysqlbinlog报错unknown variable ‘default-character-set=utf8mb4‘
查看>>
mysqldump 参数--lock-tables浅析
查看>>