# FAQs on Application-centric infrastructure monitoring | Applications Manager ## Application-centric infrastructure monitoring These are the questions asked during "Application-centric infrastructure monitoring" training. [Back to Homepage](https://www.manageengine.com/itom/free-training/applications-manager.html) ## Frequently asked questions ### This Season #### What is the difference between Application Manager and OpManager Application Module? Both ManageEngine Applications Manager and OpManager's application performance monitoring module works the same way. #### How does the system map custom ports if port scanning is disabled? We will utilize the results of NMAP and Netstat, which gets us the ports and IP address of connections. If Nmap (port scanning) is disabled, credential-based discovery (Netstat via WMI/SSH) can still detect active listening ports and map connections. #### I am currently using OPM without APM Plug-in. I need to know if any application goes down in my server or database or any network problem with network devices. Using APM dependency mapping; can we get report or single page view, about the resources that went down? Can I configure my console to do so with the Plug-in? Using ADDM (Application Discovery & Dependency Mapping), we can discover applications, databases, and identify dependencies between them. ADDM focuses on application components and does not automatically include SNMP-based network devices from OpManager in the dependency flow. For a consolidated architecture view (devices, servers, applications), you can use OpManager Organization Maps and Business Views. Dashboards and alarm widgets can also provide a single-page view of resources that are down. [Refer here.](https://www.manageengine.com/network-monitoring/organization-map.html) #### What happens if I don't allow the console to get stats from NMAP for port monitoring? If Nmap access is blocked, automatic port-based discovery will not function. Credential-based discovery (Netstat/WMI/SSH) can still detect active ports if server credentials are available. If both methods are restricted, applications and dependencies must be mapped manually. For automated dependency mapping, access to at least one discovery method is required. #### If my server is already being monitored in OPM do we need to add it in APM as well? Yes. Currently, servers monitored in OpManager are not automatically used for dependency mapping. To enable ADDM and application-level dependency mapping, the server must also be added as a monitor in Applications Manager/APM Plug-in. We shall consider using servers added in OPM for ADDM in future. We have organization maps for OPM to display your full architecture—including topology layouts, device relationships, and app dependencies. [Refer here.](https://www.manageengine.com/network-monitoring/organization-map.html) #### Does Applications Manager use ARP / DNS Hits / Network discovery traffic snap? No, Applications Manager does not use ARP-based discovery, passive DNS tracking, or traffic sniffing. Discovery is performed using: Nmap (port-based discovery), Netstat (credential-based port detection), WMI (Windows), SSH (Linux/Unix). #### Can we send an alert when any application or server or db goes down; via email? Yes. Applications Manager support automated alerting via email, SMS, webhooks, and ITSM integrations. Alerts can be configured based on availability, thresholds, and performance conditions. [Learn more](https://www.manageengine.com/products/applications_manager/help/creating-actions.html). #### Can we add dependency map in business view? Yes. Application monitors and their relationships can be included in Business Views. #### Is it possible to push agents directly from APM (Windows, Linux, APM Insight)? No, Applications Manager does not currently support remote APM Insight agent push from the console. Agents must be deployed manually or via centralized deployment tools such as GPO, Ansible, SCCM, or similar automation mechanisms. ### Archives #### Can I combine multiple attributes and generate a report? Yes, absolutely. Applications Manager provides an Advanced Reports option that allows you to combine multiple attributes in the same report. Additionally, you have the option to schedule these reports, so they can be automatically generated and sent to your team at regular intervals—whether daily, weekly, or monthly. #### Can I restart a server or service when there is high resource utilization? Yes, this is definitely possible through automation. You can create a "Windows Service Action" to automatically restart the required service when there is high utilization detected. For example, if your application server reaches 90% memory utilization, you can configure an action to restart that specific service automatically. Additionally, for virtual environments, you can create an action to restart the entire server based on utilization thresholds. This level of automation helps reduce manual intervention and ensures your infrastructure remains stable without requiring constant monitoring by your IT team. #### Are dependency maps added automatically? Based on the connections available between the applications and servers, we can build the dependency map automatically. Please refer the following sources for more details: https://www.manageengine.com/products/applications_manager/application-discovery-dependency-mapping.html https://www.manageengine.com/products/applications_manager/help/dependency-mapping-features.html #### How do I get deep insights into key metrics of application performance? We can monitor application performance from user level to the code level using APMInsight. To know more: https://www.manageengine.com/products/applications_manager/application-observability.html #### About SQL server monitoring, is it feasible to add extra load on the production server for collecting query details? We can add database query monitor for adding custom KPI. Please refer: https://www.manageengine.com/products/applications_manager/help/database-query-monitors.html #### When using APM in OpManager Plus, is there a separate agent needed for OPM or would the main OpManager agent also work? Yes, we need a separate Server Agent which is compatible with APM Plugin. The main agent for OPM will not work for APM Plugin. #### If I have several machines but don't know which applications are running on them, what is the recommended method for identifying active applications and adding the appropriate monitors in Applications Manager, given that it supports over 150 technologies? We can use our Application Discovery & Dependency Mapping (ADDM) feature to discover servers and the applications running on them. You can refer to this link to learn more about ADDM: https://www.manageengine.com/products/applications_manager/application-discovery-dependency-mapping.html #### I have a K8s cluster integrated to APM, and there is one pod with its status "Failed" and the tool is escalating the incident as a critical alarm. But I didn't find any problems with the pod during troubleshooting. How do I reset the pod alarm? If the pod status that is fetched from Kubernetes is showing as "Failed", the same will be reflected in Applications Manager. If you think it is not accurate, you can share a screenshot of the pods list and support information file with our team to investigate further. Refer to the following article for more info: https://pitstop.manageengine.com/portal/en/kb/articles/how-to-generate-support-information-from-applications-manager-gui #### Can I discover my instances with an existing credential stored in Applications Manager rather than providing credentials in clear text in the excel file? Yes, you can use the credentials that are already saved in Applications Manager during discovery. You can enter the Credential ID in the Excel file. #### Does Applications Manager support REST API based alerting? Is there any sample powershell scripts available that we can use to pull various alert data from Applications Manager? Yes, Applications Manager supports REST API. You can use them to pull alarm data. However, we do not have sample powershell scripts as of now. https://www.manageengine.com/products/applications_manager/help/rest-apis.html https://www.manageengine.com/products/applications_manager/help/list-alarms-v3-apis.html