在systemd中执行jar文件时强制工作目录 [英] Forcing work directory when executing jar file in systemd

问题描述

我正在尝试从Linux中的systemd服务启动jar.我正在执行的jar假设当前目录中有一个xml文件.我正在使用-config参数传递该文件的名称.我创建的示例服务如下:

I am attempting to start a jar from a systemd service, in linux. The jar that I am executing assumes that within the current directory, there is an xml file. I am passing the name of that file, with the -config argument. The sample service I have created is below:

[单位]说明=我的服务After = network.target

[服务]类型=简单Environment ="xml_file_name = sample.xml"ExecStart =/usr/bin/java -jar/path/to/jar/myapp.jar -config $ {xml_file_name}

上面的服务文件位于/usr/lib/systemd/system目录中，称为myservice.service.我正在执行以下命令来启动它:

The service file above is placed in the /usr/lib/systemd/system directory, and is called myservice.service. I am doing the following commands to start it:

systemctl守护程序重新加载systemctl stop myservice.servicesystemctl启动myservice.servicesystemctl状态myservice.service

systemctl status myservice.service 命令显示jar文件已运行，但是我的应用程序说找不到$ {xml_file_name}.

The systemctl status myservice.service command shows that the jar file ran, but my application says that it cannot find ${xml_file_name}.

此外，我的jar声明它是从/目录执行的.我相信这是问题的一部分，因为$ {xml_file_name}仅适用于/path/to/jar/目录.

In addition, my jar states that it was executed from the / directory. I believe that this is part of the problem, because the ${xml_file_name} is only applicable in the /path/to/jar/ directory.

尝试过的事情

• -Xbootclasspath/p:"/path/to/jar/" :在jar的路径前添加位置，以便也许可以看到$ {xml_file_name}.

• -Xbootclasspath/p:"/path/to/jar/": prepend the path of the jars location, so that maybe the ${xml_file_name} can be seen.

更改了/path/to/jar/以确保已启用所有可能的权限

changed the /path/to/jar/ to make sure it has all possible permissions enabled

我试图在系统服务的 [Service] 部分下添加 User = root ，但没有任何改变.不管哪种方式，只有root用户在计算机上，并且所有权限似乎都已签出.

I tried to add User=root under the [Service] section of my systemd service, but it made no change. Either way, only root user is on the machine, and the permissions all seem to check out.

更使我感到奇怪的是，如果我cd到/，然后手动执行:

What makes this even more strange is that if I cd to / , and then manually execute:

/usr/bin/java -jar/path/to/jar/myapp.jar -config sample.xml

所有单词都很好.

这里是否有明显的我想念的东西?是否可以告诉systemd服务，执行此Java jar，但请确保工作路径是/path/to/jar/而不是/?

Is there something evident that I am missing here? Is it possible to tell systemd service, execute this java jar, but make sure that the working path is /path/to/jar/ as opposed to / ?

推荐答案

为解决此问题，我最终在 [Service] 部分下使用了以下属性:

To solve this, I ended up using the following attribute under the [Service] section:

[服务]...WorkingDirectory =/路径/到/jarExecStart =/usr/bin/java -jar my.jar -config sample.xml

解决了问题！

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