Systemd Hdfs服务[hadoop]-启动

问题描述：

我已经创建了一个服务来启动和停止与我的Spark集群关联的hdfs.
服务:

I have created a service that starts and stops my hdfs that is associated to my spark cluster.
the service :

[Unit]
Description=Hdfs service
[Service]
Type=simple
WorkingDirectory=/home/hduser
ExecStart=/opt/hadoop-2.6.4/sbin/start-service-hdfs.sh
ExecStop=/opt/hadoop-2.6.4/sbin/stop-service-hdfs.sh
[Install]
WantedBy=multi-user.target

问题是当我启动该服务时，它在启动后立即启动和停止！:)我认为问题出在服务的类型，我真的不知道该选择哪种类型...

The problem is when i start the service, it starts and stops just after been started !! :) I think the problem is the type of the service, I don't really know what type to choose ...

谢谢.
最好的问候

Thank you.
Best regards

答

配置中有一些问题，这就是为什么它不起作用的原因.

Threre are some issues in your config, that is why it is not working.

我正在 hadoop 用户

HADOOP_HOME 是/home/hadoop/envs/dwh/hadoop/

[Unit]
Description=Hadoop DFS namenode and datanode
After=syslog.target network.target remote-fs.target nss-lookup.target network-online.target
Requires=network-online.target

[Service]
User=hadoop
Group=hadoop
Type=forking
ExecStart=/home/hadoop/envs/dwh/hadoop/sbin/start-dfs.sh
ExecStop=/home/hadoop/envs/dwh/hadoop/sbin/stop-dfs.sh
WorkingDirectory=/home/hadoop/envs/dwh
Environment=JAVA_HOME=/usr/lib/jvm/java-8-oracle
Environment=HADOOP_HOME=/home/hadoop/envs/dwh/hadoop
TimeoutStartSec=2min
Restart=on-failure
PIDFile=/tmp/hadoop-hadoop-namenode.pid

[Install]
WantedBy=multi-user.target

清单:

已设置用户和用户组
服务类型为 fork
pid文件已设置，这是 start-dfs.sh 创建的实际pid
环境变量正确

Systemd Hdfs服务[hadoop]-启动

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