Iptables is a powerful utility for controlling network traffic coming through your host. But writing the rules that control the flow can be hard to troubleshoot when you have a complex network and multiple host interfaces. Luckily, you have the ability to insert log rules wherever necessary to get visibility into the packets flowing through … Ubuntu: Debug iptables by inserting a log rule
Remote debugging of Java applications from an IDE can be essential when debugging difficult issues. There is no reason to give this functionality up just because you are deploying to a container in Cloud Foundry. In this article we’ll go over how to enable remote debugging from a local Eclipse IDE to a public CF … CloudFoundry: Enabling Java remote debugging with Eclipse
Update Jan 2019: The latest PCF Dev 2.x releases only support Windows/Mac and not Linux. This article describes the older v0.28 PCF Dev is a distribution of Cloud Foundry that has a minimal footprint and is designed to run locally on a developer’s machine. Using this lightweight distribution of Cloud Foundry, a developer can debug … CloudFoundry: PCF Dev 0.28 for local development on Ubuntu
Nginx is a powerful application level proxy server. Whether for troubleshooting or analysis, enabling log levels and custom formats for the access/error logs is a common requirement. Error Logs By default, only messages in the error category are logged. If you want to enable more details, then modify nginx.conf like: error_log file [level] Enabling debug … Nginx: Custom access log format and error levels
Enabling verbose logs for an AppDynamics machine or database agents can be invaluable for troubleshooting connectivity or network issues. Luckily, this is easily done by editing the conf/logging/log4j.xml file. By default, only the error level messages are sent to the logs: <root> <priority value=”error”/> <appender-ref ref=”FileAppender”/> </root> But you can modify this so that debug … AppDynamics: Enabling verbose debug logs for Agents