FLINK集群搭建

常用命令总结

启动/停止 flink 集群

./bin/start-cluster.sh./bin/stop-cluster.sh

启动或停止JOBMANAGER

bin/jobmanager.sh startbin/jobmanager.sh stop

添加新的 taskmanager 节点或者重启 taskmanager 节点

bin/taskmanager.sh startbin/taskmanager.sh stop

规划

主机01	主机02	主机03
hadoop01	hadoop02	hadoop03
ip01	ip02	ip03

说明

3台主机搭建一个flink集群

解压

tar -zxvf /home/flink-1.11.1-bin-scala_2.11.tgz -C /usr/local/

小贴士：官网下载对应所需对应版本

配置环境变量

vi /etc/profile

追加如下内容

点击查看代码

export FLINK_HOME=/usr/local/flink-1.11.1/
export PATH=$PATH:$JAVA_HOME/bin:$ZK_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$KAFKA_HOME/bin:$FLINK_HOME/bin

刷新环境变量：

source /etc/profile

配置

./conf/flink-conf.yaml

点击查看代码

#==============================================================================
# Common
#==============================================================================
#jobmanager.rpc.address: hadoop01 HA模式不用
# The RPC port where the JobManager is reachable. jobmanager.rpc.port: 6123
# The heap size for the JobManager JVM jobmanager.heap.size: 1024m
# The heap size for the TaskManager JVM taskmanager.heap.size: 1024m
#==============================================================================
# Rest & web frontend
#==============================================================================
# The port to which the REST client connects to. If rest.bind-port has
# not been specified, then the server will bind to this port as well.
#
rest.port: 8081
# The address to which the REST client will connect to
#
rest.address: hadoop01
# HA settings
high-availability: zookeeper
high-availability.zookeeper.quorum: hadoop01:2181,hadoop02:2181,hadoop03:2181
high-availability.zookeeper.path.root: /flink
high-availability.cluster-id: /cluster_flink
high-availability.storageDir: hdfs://hadoop01:9000/flink/recovery

./conf/slaves

点击查看代码

hadoop01
hadoop02
hadoop03

小贴士：集群主机IP或者主机名

./conf/masters

点击查看代码

hadoop01:8081
hadoop02:8081

分发并修改hadoop02和hadoop03节点的ip或者主机名

分发：

scp -r /etc/profile hadoop02:/etc
scp -r /etc/profile hadoop03:/etc
scp -r ../flink-1.11.1/ hadoop02:/usr/local/
scp -r ../flink-1.11.1/ hadoop03:/usr/local/

修改配置：

hadoop02 --------./conf/flink-conf.yaml

修改如下

rest.address: hadoop02

hadoop03 -------- ./conf/flink-conf.yaml

修改如下

rest.address: hadoop03

启动

启动顺序：先启动zk和hdfs、再启动flflink。

启动集群

start-cluster.sh

关闭standalone模式

stop-cluster.sh

测试进程

检测每一台的jps进程

web访问地址：http://hadoop01:8081

web访问地址：http://hadoop02:8081

job historyserver配置：

配置：vi ./conf/flink-conf.yaml追加如下内容

点击查看代码

# The HistoryServer is started and stopped via bin/historyserver.sh (start|stop)
# Directory to upload completed jobs to. Add this directory to the list of
# monitored directories of the HistoryServer as well (see below).
#该目录不能创建， 则可以手动创建
jobmanager.archive.fs.dir: hdfs://hadoop01:9000/flink_completed_jobs/
# The address under which the web-based HistoryServer
listens.historyserver.web.address: 192.168.216.111
# The port under which the web-based HistoryServer listens.
historyserver.web.port: 8082
# Comma separated list of directories to monitor for completed
jobs.historyserver.archive.fs.dir: hdfs://hadoop01:9000/flink_completed_jobs/
# Interval in milliseconds for refreshing the monitored
directories.historyserver.archive.fs.refresh-interval: 10000

启动历史服务(重新启动flflink集群)：

historyserver.sh start

查看进程：

jps

访问web：http://hadoop01:8082/

注意:

启动flink集群报错：

点击查看代码

Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Could
not find a file system implementation for scheme 'hdfs'. The scheme is not
directly supported by Flink and no Hadoop file system to support this scheme
could be loaded.
at org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:447)
at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:359)
at org.apache.flink.core.fs.Path.getFileSystem(Path.java:298)
at org.apache.flink.runtime.blob.BlobUtils.createFileSystemBlobStore(BlobUtils.java:116) ... 10 more
Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Hadoop is not in the classpath/dependencies.
at org.apache.flink.core.fs.UnsupportedSchemeFactory.create(UnsupportedSchemeFactory.java:58)
at org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:443) ... 13 more

**解决办法：**
我使用的hadoop的版本是2.7.6，flink的版本是1.11.1
因为flink的checkpoint是需要记录在hdfs上，但是应该是flink1.8之后的就把hadoop的一些依赖删除了，所以报错找不到相应的jar包。
手动将flink对hadoop的依赖包进行导入到flink的lib目录下即可。
flink-shaded-hadoop-2-uber-2.7.5-10.0.jar
下载地址：
https://repo.maven.apache.org/maven2/org/apache/flink/flink-shaded-hadoop-2-uber/2.7.5-10.0/flink-shaded-hadoop-2-uber-2.7.5-10.0.jar