Passenger security update

The main use cases for this option are:. Instructs Passenger to drop its privilege to that of the given user as soon as Passenger has setup the socket. This only works if Passenger was started with root privileges. By default, Passenger buffers large web application responses. This prevents slow HTTP clients from blocking web applications by reading responses very slowly.

This feature is also known as "real-time disk-backed response buffering". This configuration option allows you to specify a different directory. Changing this option is especially useful if the partition that the default directory lives on doesn't have enough disk space.

If you've specified such a directory as opposed to using Passenger's default then you must ensure that this directory exists. This option allows use of an intermediate proxy for the Passenger security update check. The proxy client code uses libcurl, which supports the following values for scheme : http, socks5, socks5h, socks4, socks4a.

By default, Passenger automatically serves static files in the application's public subdirectory. Your application is offloaded from having to serve static files. In case your static files are not located in public but somewhere else, then use this option to specify the location.

When sticky sessions are enabled, all requests that a client sends will be routed to the same originating application process, whenever possible. When sticky sessions are disabled, requests may be distributed over multiple processes, and may not necessarily be routed to the originating process, in order to balance traffic over multiple CPU cores.

Because of this, sticky sessions should only be enabled in specific circumstances. For applications that store important state inside the process's own memory — that is, as opposed to storing state in a distributed data store, such as the database or Redis — sticky sessions should be enabled. This is because otherwise, some requests could be routed to a different process, which stores different state data.

Because processes don't share memory with each other, there's no way for one process to know about the state in another process, and then things can go wrong. One prominent example is the popular SockJS library , which is capable of emulating WebSockets through long polling. SockJS correlates the two requests with each other through a session identifier.

At the same time, in its default configuration, it stores all known session identifiers in an in-memory data structure. Passenger puts an identifier in this cookie, which tells Passenger what the originating process is.

Next time the client sends a request, Passenger reads this cookie and uses the value in the cookie to route the request back to the originating process. If the originating process no longer exists e.

Otherwise, the load balancer could route the request to a different server. Log to the specified path, which is generally expected to be a file. Since version 5. This option allows one to specify how much information Passenger should write to the log file. A higher log level value means that more information will be logged.

Passenger can display friendly error pages whenever an application fails to start. This friendly error page presents the startup error message, some suggestions for solving the problem, a backtrace and a dump of the environment variables. This feature is very useful during application development and useful for less experienced system administrators, but the page might reveal potentially sensitive information, depending on the application.

You can use this option to explicitly enable or disable this feature. Turns support for Ruby application debugging on or off.

Please read the Ruby debugging console guide for more information. The maximum number of requests an application process will process. After serving that many requests, the application process will be shut down and Passenger will restart it. A value of 0 means that there is no maximum. The application process might also be shut down if its idle timeout is reached.

This option is useful if your application is leaking memory. By shutting it down after a certain number of requests, all of its memory is guaranteed to be freed by the operating system. The maximum amount of memory that an application process may use, in megabytes. Once an application process has surpassed its memory limit, Passenger will allow it to finish processing all of its current requests, then shut the process down.

A value of 0 means that there is no maximum: the application's memory usage will not be checked. By shutting it down, all of its memory is guaranteed to be freed by the operating system. This option uses the ps command to query memory usage information.

The maximum amount of time, in seconds, that an application process may take to process a request. If the request takes longer than this amount of time, then the application process will be forcefully shut down, and possibly restarted upon the next request. A value of 0 means that there is no time limit. This option is useful for preventing your application from getting stuck for an indefinite period of time.

If you want Passenger to not abort WebSocket connections, then use this option to turn the behavior off. That way, Passenger will wait for WebSocket connections to terminate by themselves, before proceeding with a process shutdown or restart. For this reason, you must modify your application code to ensure that WebSocket connections do not stay open for an arbitrary amount of time.

Information is sent to enable monitoring, administering, analysis and troubleshooting of this Passenger instance and apps running on it. The feature is disabled if this option is not specified. See "Connect Passengers" in the Fuse Panel for further instructions. The authentication method Passenger should use when connecting to the Fuse Panel. Currently only basic authentication is supported. The username that Passenger should use when connecting to the Fuse Panel with basic authentication.

The password that Passenger should use when connecting to the Fuse Panel with basic authentication. Low-level mechanism to set arbitrary internal options. This flag can be used multiple times on the command line to specify multiple options. What is this? Continue ». Edit page. There is also a third, more powerful but also more complicated configuration mechanism.

See the Nginx configuration template for this. The Nginx config file must follow a specific format You can't just use any arbitrary Nginx config file! Do not duplicate options set by Passenger Standalone Nginx only allows setting most configuration options once.

Keep your configuration template up to date The original configuration template file may change from time to time, e. This is because some of your apps may contain a Passengerfile. In such a situation, this means that some apps want to listen for HTTPS requests on the default port, while others want to listen for unencrypted HTTP requests, which is a contradiction and causes Passenger to abort.

This option only has effect on Ruby applications. Multithreading is not supported for Python. Multithreading is not applicable to Node. Until then, these items will be considered as prohibited materials. The contents of the plastic bag should fit comfortably, and the bag should be completely closed.

Rollup Image. Page Content. As part of safety and security requirements, ask yourself the following questions before checking in for your flight: 1. Do you own this baggage? Has anyone given you anything to carry? Was your baggage packed by anyone else?

Asked 1 year, 10 months ago. Active 1 year, 3 months ago. Viewed 1k times. IF i disable whether this solve the issue or should i run the command of passenger [ N App stderr: App stderr: This library provides various optimized routines that make App stderr: App stderr: Phusion Passenger faster.

Please run 'sudo yum install passenger-devel App stderr: Trying next mirror App stdout: [ N Improve this question. Raj Sekar Raj Sekar 21 4 4 bronze badges. Add a comment. Active Oldest Votes.

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