r - 网页上的 Shiny 服务器错误 : An error has occurred The application failed to start. 应用程序在初始化期间退出

Question

我正在尝试在我的 Amazon Linux AWS EC2 实例上设置 R Shiny Server 并收到以下错误:

发生了错误

应用程序无法启动。

应用程序在初始化期间退出。

我做了一个 sudo Shiny-server 来看看会发生什么并看到错误 EADDRINUSE:

$ sudo shiny-server
[2017-01-29 13:21:22.724] [INFO] shiny-server - Shiny Server        v1.5.1.834 (Node.js v6.9.1)
[2017-01-29 13:21:22.728] [INFO] shiny-server - Using config file   "/etc/shiny-server/shiny-server.conf"
[2017-01-29 13:21:22.764] [INFO] shiny-server - Starting listener on   0.0.0.0:80
[2017-01-29 13:21:22.771] [ERROR] shiny-server - HTTP server error (0.0.0.0:80): listen EADDRINUSE 0.0.0.0:80
[2017-01-29 13:21:22.771] [INFO] shiny-server - Shutting down worker processes

我已验证 Shiny、rmarkdown 和 Shiny Server 和 R 已正确安装在我的实例上:

R --version
R version 3.2.2 (2015-08-14) -- "Fire Safety"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under the terms of the
GNU General Public License versions 2 or 3.
For more information about these matters see
http://www.gnu.org/licenses/.

> library(shiny)
> library(rmarkdown)
>

我还检查了我的 ec2 实例上的网络连接:

$ sudo netstat --tcp -nlpa | grep 80
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                    LISTEN      1875/shiny-server

我的 ec2 实例网络安全组:

$ aws ec2 describe-security-groups --group-name launch-wizard-7
{
"SecurityGroups": [
    {
        "IpPermissionsEgress": [
            {
                "IpProtocol": "-1", 
                "PrefixListIds": [], 
                "IpRanges": [
                    {
                        "CidrIp": "0.0.0.0/0"
                    }
                ], 
                "UserIdGroupPairs": [], 
                "Ipv6Ranges": []
            }
        ], 
        "Description": "launch-wizard-7 created 2017-01-28T14:22:51.817-05:00", 
        "IpPermissions": [
            {
                "PrefixListIds": [], 
                "FromPort": 80, 
                "IpRanges": [
                    {
                        "CidrIp": "0.0.0.0/0"
                    }
                ], 
                "ToPort": 80, 
                "IpProtocol": "tcp", 
                "UserIdGroupPairs": [], 
                "Ipv6Ranges": []
            }, 

(还有另一个条目，但 ssh 进入我自己的机器，所以我不会把这些信息)

这是来自/etc/shiny-server/shiny-server.conf 的我的 Shiny-server.conf 文件

$ cat /etc/shiny-server/shiny-server.conf
# Instruct Shiny Server to run applications as the user "shiny"
run_as shiny;

# Define a server that listens on port 3838
server {
    listen 3838;

# Define a location at the base URL
location / {

# Host the directory of Shiny Apps stored in this directory
    site_dir /srv/shiny-server;

# Log all Shiny output to files in this directory
    log_dir /var/log/shiny-server;

# When a user visits the base URL rather than a particular application,
# an index of the applications available in this directory will be shown.
    directory_index on;
 }
}   

任何帮助将非常感激。我试图让 AWS 为所有 IP 地址和 Shiny 的服务器监听端口 80 的请求，因为我认为这两种服务不应该监听相同的端口，但这没有用。我只是想部署 Shiny 的服务器附带的示例应用程序。

网址: http://34.198.107.126/sample-apps/hello/

Answer 1

没关系，弄清楚它是什么；一切都设置正确，但我的 r 包不是作为 root 安装的，而是作为 ec2-user 安装的；以 root 身份安装，因为网页/文​​件夹权限主要是 root。