闪亮的服务器：应用程序无法在AWS上启动

Question

我无法将自己的shiny应用程序部署到AWS服务器。 我按照这些指示去开球。 我能够安装shiny并查看示例应用程序在服务器上的运行情况。 但是，当我尝试启动自己的应用程序时，会看到错误消息：

“发生了错误

应用程序无法启动。

该应用程序在初始化期间退出。”

根据许多论坛的介绍，例如本论坛，我需要从run_as shiny;调整/etc/shiny-server/shiny-server.conf文件中的权限run_as shiny; 以run_as myusername shiny 。 我试过了，但是没有用。

我的日志如下所示：

cat /var/log/shiny-server.log
[2018-05-15T08:25:18.770] [INFO] shiny-server - Shiny Server v1.5.7.907 (Node.js v8.10.0)
[2018-05-15T08:25:18.772] [INFO] shiny-server - Using config file "/etc/shiny-server/shiny-server.conf"
[2018-05-15T08:25:18.827] [WARN] shiny-server - Running as root unnecessarily is a security risk! You could be running more securely as non-root.
[2018-05-15T08:25:18.831] [INFO] shiny-server - Starting listener on 0.0.0.0:3838
[2018-05-15T08:25:32.474] [INFO] shiny-server - Created bookmark state directory: /var/lib/shiny-server/bookmarks
[2018-05-15T08:25:32.475] [INFO] shiny-server - Created user bookmark state directory: /var/lib/shiny-server/bookmarks/shiny
[2018-05-16T22:31:45.674] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:40:21.378] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:40:54.257] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:42:02.326] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:42:14.474] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:44:18.246] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T22:56:41.494] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:00:17.853] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:09:32.642] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:15:39.846] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:16:04.410] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:23:36.596] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:26:43.907] [INFO] shiny-server - Stopping listener on 0.0.0.0:3838
[2018-05-16T23:26:43.907] [INFO] shiny-server - Shutting down worker processes (with notification)
[2018-05-16T23:26:56.234] [INFO] shiny-server - Shiny Server v1.5.7.907 (Node.js v8.10.0)
[2018-05-16T23:26:56.237] [INFO] shiny-server - Using config file "/etc/shiny-server/shiny-server.conf"
[2018-05-16T23:26:56.295] [WARN] shiny-server - Running as root unnecessarily is a security risk! You could be running more securely as non-root.
[2018-05-16T23:26:56.298] [INFO] shiny-server - Starting listener on 0.0.0.0:3838
[2018-05-16T23:27:00.502] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:30:22.786] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-16T23:31:25.808] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.
[2018-05-17T00:35:40.060] [INFO] shiny-server - Error getting worker: Error: The application exited during initialization.

另外，当我键入shiny-server我看到：

Using config file "/etc/shiny-server/shiny-server.conf"
[2018-05-17T01:17:12.659] [ERROR] shiny-server - Error loading config: The user 'ubuntu' does not have permissions to run applications as one of the users in 'shiny'. Please restart shiny-server as one of the users in  'shiny'. (/etc/shiny-server/shiny-server.conf:2:1)

配置文件：

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

# 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;
  }
}

sanitize_errors off;

任何帮助将不胜感激。 我觉得我已经很接近终于可以启动我的应用了！

Answer 1

如您的错误所述，不允许用户ubuntu启动闪亮的应用程序。 确保以sudo身份登录，请尝试以下操作。 如果这样不起作用，请检查是否使用sudo访问权限在全局安装了闪亮的应用程序

• 须藤-i
• sudo systemctl重新启动Shiny-server

或尝试停止并启动它

• sudo systemctl停止闪亮服务器
• sudo systemctl启动闪亮服务器

我在服务器上运行Ubuntu