How to add APM Insight Java agent without application restart?
But in case of critical issues in the app, like sudden application slowness, where you haven't installed APM Insight agent previously and an application restart would mean losing the issue at hand, you can use the below suggested method to install the agent without a restart. This would enable you to identify the issue at hand without restarting your application.
We DO NOT recommend this method of installation until it is necessary. Also, kindly avoid this method when your JVM has low free memory or high CPU usage. Loading the Java agent via this approach would consume high memory & CPU for a short period during initialization.- Must have JDK (not JRE) installed on the machine.
- APM Insight Java version 5.3 & above.
Installation steps:
Download the agent zip file from Site24x7 web client (APM > APM Insight > Java).
Extract the agent zip anywhere on the machine. Ensure that the user running the app server has read-write permission over this directory.
Identify the app server Process ID (PID) that needs to be monitored.
Execute the following command from the agent directory: java -jar apminsight-javaagent.jar -start PID
This installation works only one time. If you restart your application, you won't be able to see the monitoring data again. In such cases, we recommend you to install the APM Insight agent following the usual installation procedure.
Related Articles
How to identify and resolve conflicts between other APM products and the APM Insight .NET agent
Problem statement: You are experiencing either of the below issues and suspect that another APM product is interfering with the Site24x7 .NET agent. 1. The .NET monitor is not created under APM > APM Insight > Applications, even after the .NET agent ...APM Insight integration for Next.js in Kubernetes
To integrate the Site24x7 APM Insight Next.js agent into your Kubernetes application using initContainers with the prebuilt agent image, follow the steps below: Prerequisites A Next.js application container image The Site24x7 APM Insight license key ...No data for service and process in Windows server monitor
If you see "No Data" for process and service metrics (such as CPU or memory usage of monitored services) in the Site24x7 Windows server monitor user interface, follow the troubleshooting steps below. Run PowerShell Commands Open PowerShell as ...How do I monitor an Oracle database hosted in a Docker container in the same machine?
To monitor your Oracle Database hosted in a Docker container, follow these steps: Log in to Site24x7 and install the Site24x7 Linux monitoring agent. Execute the following command in your terminal and enter your Oracle Database instance's username ...Troubleshoot the Error 404 and Error 99 for RabbitMQ
When installing the RabbitMQ plugin, you may encounter the following errors: HTTP Error 404: Not Found: This error usually occurs when Site24x7's RabbitMQ monitoring plugin attempts to access the /api/overview page of RabbitMQ, but the resource ...