Logstash在泊坞窗 - 配置文件，虽然安装卷时未找到 [英] Logstash in Docker - config file not found when mounted though a volume

问题描述

编辑：这似乎是一个boot2docker的事情...在Ubuntu的虚拟机中运行码头工人正常工作

。

我想火起来logstash在泊坞容器，但是当我安装配置文件作为卷，它似乎并没有找到它。有趣的是，如果我开始了使用bash容器，我可以看到在那里的配置文件，并运行相同的命令，什么泊坞窗会，它的工作原理。

泊坞文件

 从Ubuntu：14.04
MAINTAINER cvallance运行apt-get更新
运行apt-get -yqq安装的OpenJDK 7的JRE
运行apt-get -yqq安装卷曲
RUN的mkdir /选择/ logstash \\
  ＆功放;＆安培; CD /选择/ logstash \\
  ＆功放;＆安培;卷曲-O https://download.elastic.co/logstash/logstash/logstash-1.4.2.tar.gz \\
  ＆功放;＆安培;焦油zxvf logstash-1.4.2.tar.gzCMD [/opt/logstash/logstash-1.4.2/bin/logstash，代理，--verbose，F，/etc/logstash/sample.conf]
 

/config/sample.conf位于 $（PWD）的配置文件

 输入{
  标准输入{}
}输出{
  标准输出{
    codeC =＆GT; rubydebug
  }
}
 

泊坞建造的命令：

 泊坞窗打造-t cvallance / logstash。
 

泊坞窗运行命令：

 泊坞窗运行-ti -v $（PWD）/配置：在/ etc / logstash cvallance / logstash
 

错误：

 错误：未找到配置文件：/etc/logstash/sample.conf
你可以确保这个路径是logstash配置文件？
 

BUT 如果我从一个bash会话中运行的容器内的同一个命令是这样的...

 泊坞窗运行-ti -v $（PWD）/配置：在/ etc / logstash cvallance / bash的logstash
...
根@ d3fd885903dd：/＃/opt/logstash/logstash-1.4.2/bin/logstash剂--verbose -f /etc/logstash/sample.conf
 

一切正常。即输入和输出

 测试
{
       消息=＆GT; 测试，
      @version=＆GT; 1，
    @timestamp=＆GT; 2015-04-10T00：06：33.878Z，
          主持人=＆GT; d3fd885903dd
}
 

解决方案

如果它是一个boot2docker的事情，记得是为您提供基于微内核Linux主机，的 无任何持久性 （除的/ var / lib中/泊坞窗）。

我做的是确保 Oracle_VM_VirtualBox_Extension_Pack 的安装，并让我的 / C /用户/＆LT; yourLogin＆GT; 在我boot2docker SSH会话自动共享结果。
无论我需要保持有写（ / C /用户/＆LT; yourLogin＆GT; / ... ），而不是其他任何地方搜索
如果你有安装一个主机目录作为数据量，应安装在 / C /用户/℃的文件夹; yourLogin＆GT; / ... 。

的其它选项（确实仍然存在）是定义一个<一href=\"https://docs.docker.com/userguide/dockervolumes/#creating-and-mounting-a-data-volume-container\"相对=nofollow>数据卷集装箱，这将在 /var/lib/docker/volumes/conf.json ，以及（实际文件）的/ var / lib中/泊坞窗/ VFS / XXX 。结果
这是preferred最佳做法，因为它不会将您的数据容器链接到一个特定的主机平台（这里 / C /用户/＆LT; yourLogin＆GT; 实际上要看的 VM 的主机，在Windows！不是很便携。）

EDIT: It seems to be a boot2docker thing... works fine in an ubuntu vm running docker.

I'm trying to fire up logstash in a Docker container but when I mount the config file as a volume, it doesn't seem to find it. Interestingly, if I start up the container with bash, I can see the config file in there and running the same command as what docker would, it works.

Docker File

FROM ubuntu:14.04
MAINTAINER cvallance

RUN apt-get update
RUN apt-get -yqq install openjdk-7-jre
RUN apt-get -yqq install curl
RUN mkdir /opt/logstash \
  && cd /opt/logstash \
  && curl -O https://download.elastic.co/logstash/logstash/logstash-1.4.2.tar.gz \
  && tar zxvf logstash-1.4.2.tar.gz

CMD ["/opt/logstash/logstash-1.4.2/bin/logstash", "agent", "--verbose", "-f", "/etc/logstash/sample.conf"]

Config file located at $(pwd)/config/sample.conf

input {
  stdin { }
}

output {
  stdout {
    codec => rubydebug
  }
}

Docker build command:

docker build -t cvallance/logstash .

Docker run command:

docker run -ti -v $(pwd)/config:/etc/logstash cvallance/logstash

Error:

Error: No config files found:  /etc/logstash/sample.conf
Can you make sure this path is a logstash config file?

BUT if I run the same command inside the container from a bash session like so...

docker run -ti -v $(pwd)/config:/etc/logstash cvallance/logstash bash
...
root@d3fd885903dd:/# /opt/logstash/logstash-1.4.2/bin/logstash agent --verbose -f /etc/logstash/sample.conf

Everything works as expected. I.e. input and output

testing
{
       "message" => "testing",
      "@version" => "1",
    "@timestamp" => "2015-04-10T00:06:33.878Z",
          "host" => "d3fd885903dd"
}

解决方案

If it is a "boot2docker" thing, remember that is offers you a Linux host based on Tiny core, without any persistence (except /var/lib/docker).

What I do is make sure the Oracle_VM_VirtualBox_Extension_Pack is installed, and get my /c/Users/<yourLogin> automatically shared in my boot2docker ssh session.
Whatever I need to keep is written there (/c/Users/<yourLogin>/...), not anywhere else.
If you have to mount a host directory as a data volume, you should mount a folder from /c/Users/<yourLogin>/....

The other option (which does persists) is to define a Data Volume Container, which will persists data in /var/lib/docker/volumes/conf.json, and (for the actual files) in /var/lib/docker/vfs/xxx.
That is the preferred best-practice as it doesn't link your data container to a specific host platform (here '/c/Users/<yourLogin> actually depends on the VM host, on Windows! Not very portable.)

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