[大数据]flink在centos7单机安装测试

系统环境：CentOS7.8

flink版本：下载和Scala版本对应的

flink官方下载地址：https://flink.apache.org/downloads.html

查看jdk

[root@localhost bin]# java -version
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)

安装：

解压到指定文件夹

[root@localhost tools]# tar zxvf flink-1.11.6-bin-scala_2.12.tgz -C /root/training/

到安装目录的文件夹下：

[root@localhost ]# cd /root/training/flink-1.11.6/

启动flink服务:

[root@localhost flink-1.11.6]# bin/start-cluster.sh
Starting cluster.
Starting standalonesession daemon on host localhost.
Starting taskexecutor daemon on host localhost.

jps查看进程：

[root@localhost flink-1.11.6]# jps
7926 TaskManagerRunner
8023 Jps
7614 StandaloneSessionClusterEntrypoint

TaskManagerRunner和StandaloneSessionClusterEntrypoint启动才算安装成功；

开始我的TaskManagerRunner没启动，网上找了好多方法都没解决，最后解决办法：

1. 停止flink：

[root@localhost flink-1.11.6]# bin/stop-cluster.sh
No taskexecutor daemon (pid: 6460) is running anymore on localhost.
No standalonesession daemon (pid: 6150) is running anymore on localhost.

最后发现进程还在：

[root@localhost flink-1.11.6]# jps
7202 Jps
2394 StandaloneSessionClusterEntrypoint

2. 直接有kill杀死：

[root@localhost flink-1.11.6]# kill -9 2394
[root@localhost flink-1.11.6]# jps
7217 Jps

3. 再次启动flink：

[root@localhost flink-1.11.6]# bin/start-cluster.sh
Starting cluster.
Starting standalonesession daemon on host localhost.
Starting taskexecutor daemon on host localhost.
[root@localhost flink-1.11.6]# jps
7926 TaskManagerRunner
8023 Jps
7614 StandaloneSessionClusterEntrypoint

5、浏览器访问flink服务，直接访问：http://自己ip:8081/#/overview，可以看到flink已经正常启动。

运行flink自带样例词频统计：

[root@localhost bin]# ./flink run ../examples/batch/WordCount.jar
Executing WordCount example with default input data set.
Use --input to specify file input.
Printing result to stdout. Use --output to specify output path.
Job has been submitted with JobID 6959c79777833ad39b8847cb3d3f736d
Program execution finished
Job with JobID 6959c79777833ad39b8847cb3d3f736d has finished.
Job Runtime: 3239 ms
Accumulator Results: 
- fe3b95521fed6b0e1774cd035c55fe5b (java.util.ArrayList) [170 elements]

.......
(respect,1)
(returns,1)
(rub,1)
(s,5)
(say,1)
(scorns,1)
(sea,1)

安装测试完成。
希望对你有帮助！！！！！！！！