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🚧 ncat
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markdown-file/Flink-Install-And-Settings.md

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@@ -58,6 +58,17 @@ mvn archetype:generate \
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- 有一个 `Add New` 按钮可以上传 jar 包,然后填写 Class 路径:`com.youmeek.WordCount`
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- `parallelism` 表示并行度,填写数字,一般并行度设置为集群 CPU 核数总和的 2-3 倍(如果是单机模式不需要设置并行度)
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## 安装 ncat 方便发送数据包
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- 环境:CentOS 7.4
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- 官网下载:<https://nmap.org/download.html>,找到 rpm 包
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- 当前时间(201803)最新版本下载:`wget https://nmap.org/dist/ncat-7.60-1.x86_64.rpm`
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- 当前时间(201812)最新版本下载:`wget https://nmap.org/dist/ncat-7.70-1.x86_64.rpm`
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- 安装:`sudo rpm -i ncat-7.60-1.x86_64.rpm`
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- ln 下:`sudo ln -s /usr/bin/ncat /usr/bin/nc`
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- 检验:`nc --version`
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- 启动监听 9011 端口:`nc -lk 9011`,然后你可以输入内容,Flink demo 看是否有收到
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