快速scala编译器:无法建立与编译守护进程的连接

Question

我有一台ubuntu机器在OpenVZ虚拟化下。当我运行fsc测试。scala得到:

Unable to establish connection to compilation daemon

然后ps aux向我展示了许多像这样的过程

ren      17482  0.0  0.0   4908  1400 pts/0    S    00:29   0:00 /bin/bash --posix /usr/bin/scala -Djava.net.preferIPv4Stack=true scala.tools
ren      17490  0.2  0.5 1246676 24268 pts/0   Sl   00:29   0:00 java -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Xbootc

我已经用尽了如何使它工作的想法，版本是Scala code runner version 2.9.2 -- Copyright 2002-2011, LAMP/EPFL。什么好主意吗?

编辑:

找到了这个，所以:

• selinux未安装
• export | grep SCALA不返回任何东西，但是scala和scala编译/运行良好，所以我假设这一步可以
ping localhost - works
• fsc -reset -相同的错误
• fsc -verbose>> logfile.log 2>&1输出如下:

Fast Scala compiler version 2.9.2 -- Copyright 2002-2011, LAMP/EPFL
[Given arguments: -verbose]
[Transformed arguments: -verbose -current-dir /home/ren]
[VM arguments: ]
[Temp directory: /tmp/scala-devel/ren]
[Port number: 36737]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 36737 failed; re-trying...]
No compile server running: starting one with args ''
[Executing command: scala scala.tools.nsc.CompileServer -v]
Starting CompileServer on port 34962
Redirect dir is /tmp/scala-devel/ren/output-redirects
[Port number: 34962]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 34962 failed; re-trying...]
[Port number: 34962]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 34962 failed; re-trying...]
No compile server running: starting one with args '' and so on ...

编辑2:

好吧，像这样启动编译服务器scala scala.tools.nsc.CompileServer -v实际上工作!似乎fsc确实启动了所有这些服务器，但由于某种原因，它决定不启动。fsc -server localhost:port test.scala作品。

Answer 1

似乎fsc使用hostname连接到编译服务器。我的主机名对ping没有响应。在/etc/hostname中将其更改为localhost修复了这个问题。