Knowledge Base

Knowledge Base Articles

Sorted by:

How do I fix Apache and Nginx dropped headers needed for AppDynamics?

Apache and Nginx have a known issue that drops headers containing underscores. How can I fix these headers, since they're needed for correlation purposes? Problem Recently, Apache and Nginx began dropping headers that include underscores in their ...

Apache Agent Installation Guidelines and Prerequisites

This article is intended for anyone installing the Apache Agent. Please make sure the following 11 prerequisites are in place before installing the agent: Insure that SELinux is not active. Issue the command sestatus at the host command prompt. ...

How do I determine if the ZeroMQ issue affects my Apache Agent?

This article discusses the issue with the third-party library know as ZMQ (ZeroMQ) and outlines the steps needed to determine if the known issue with socket handling is occurring. The AppDynamics (Apache) Agent's current design implements a commun...

Why does using a reverse proxy between the Browser and the Controller cause encoded slashes errors?

Issue This article is intended for anyone who is attempting to view the Controller from a browser via an Apache Reverse Proxy and encounters an error due to encoded slashes. The problem seems to occur when accessing the Server Tabs, which as of the...

How do I configure a Multi-Tenant, Multi-Proxy AppDynamics-Instrumented Apache Environment?

This article is intended for anyone attempting to install more than one AppDynamics-instrumented Apache web server on the same host, where the number of Application Contexts exceeds the per-Proxy limit, and the Agents need to be distributed across m...

Screen Shot 2017-11-09 at 4.11.25 PM.png

Screen Shot 2017-11-09 at 4.12.09 PM.png

What are the requirements for monitoring Apache with SELinux?

AppDynamics does not directly support SELinux. For troubleshooting SELinux, consult your security team. This page lists the requirements for monitoring Apache with SELinux. The Apache agent requires the following: Read/write/execute privileg...

How do I install the Apache Agent within an existing AppDynamic-instrumented topology?

This article is intended for anyone who is about to install the Apache Agent as an upstream (entry point within your topology) web server. It may also prove useful for anyone who has already done so and is now unable to see Business Transactions bei...

Screen Shot 2017-07-31 at 3.33.27 PM.png

Screen Shot 2017-07-31 at 4.21.01 PM.png

How do I configure the Apache Agent and C/C++ SDK for an authenticated HTTP proxy?

Question How do I provide a username and password for an HTTP proxy for use with the Apache Web Server Agent or C/C++ SDK? Scope This article applies only to those versions of the Apache Web Server Agent and C/C++ SDK that utilize the standalone J...

How do I resolve the Apache error "unable to parse slashes in POST queries"?

For users whose Controller is accessed through HTTPS with an Apache proxy, the following error is visible in the browser using developer tools: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>404 Not Found</title> </head><bod...

How do I run multiple concurrent AppDynamics Apache Agents from a single read-only install directory?

The following article describes how to install and configure a single Apache Agent source directory, but run multiple concurrent Apache Agents using the read-only copy of the installed executable, while maintaining separate logging, IPC, and configu...