Flink安装与部署

Flink下载

https://flink.apache.org/downloads.html

选择与安装的scala兼容的版本，安装的Scala版本是2.11，选择Flink1.9.2即可：https://archive.apache.org/dist/flink/flink-1.9.2/flink-1.9.2-bin-scala_2.11.tgz

安装部署 Flink

# 解压缩
tar -zxvf ./flink-1.9.2-bin-scala_2.11.tgz
# 添加环境变量
echo '# Apache Flink' >> /etc/profile
echo 'export FLNK_HOME=/root/develop/flink/apache-flink-1.9.2' >> /etc/profile
echo 'export PATH=$FLINK_HOME/bin:$PATH' >> /etc/profile
# 使环境变量生效
source /etc/profile

启动Flink

[root@localhost flink-1.9.2]# ./bin/start-cluster.sh
Starting cluster.
Starting standalonesession daemon on host localhost.localdomain.
Starting taskexecutor daemon on host localhost.localdomain.

此时可以通过观察logs目录下的日志来检测系统是否正在运行：tail log/flink--standalonesession-.log

JobManager同时会在8081端口上启动一个web管理界面，访问地址：http://localhost:8081，这里要切换为你实际的IP地址

目录结构

[root@localhost flink-1.9.2]# ll
total 816
drwxr-xr-x. 2 502 games   4096 Jul  6 08:16 bin
drwxr-xr-x. 2 502 games   4096 Jul  6 08:16 conf
drwxr-xr-x. 7 502 games     76 Jul  6 08:16 examples
drwxr-xr-x. 2 502 games    169 Jul  6 08:16 lib
-rw-r--r--. 1 502 games  11357 Dec  2  2019 LICENSE
drwxr-xr-x. 2 502 games   4096 Jul  6 08:16 licenses
drwxr-xr-x. 2 502 games    252 Jul  6 08:17 log
-rw-r--r--. 1 502 games 799111 Jan 24  2020 NOTICE
drwxr-xr-x. 3 502 games   4096 Jul  6 08:16 opt
drwxr-xr-x. 2 502 games     24 Jul  6 08:16 plugins
-rw-r--r--. 1 502 games   1308 Dec  2  2019 README.txt

示例程序

在%FLINK_HOME%目录下执行示例程序：

./bin/flink run ./examples/batch/WordCount.jar

控制台会打印出计算的结果：

<dependencies>
  <dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-java</artifactId>
    <version>1.9.2</version>
  </dependency>
  <dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-streaming-java_2.11</artifactId>
    <version>1.9.2</version>
  </dependency>
  <dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-clients_2.11</artifactId>
    <version>1.9.2</version>
  </dependency>
</dependencies>