If using SSL for agent communication with an AppDynamics Controller, it is recommended that agent SSL traffic
Answer(s): C
AppDynamics recommends that you terminate SSL connections from agents at a reverse proxy or a load balancer in front of the Controller, rather than at the Controller itself. This improves the performance and scalability of the Controller by offloading the SSL processing to the proxy or load balancer. It also simplifies the configuration and management of SSL certificates and truststores. To enable this option, you need to configure the proxy or load balancer to accept SSL connections from agents and forward them to the Controller using HTTP. You also need to configure the agents to use SSL and point to the proxy or load balancer host and port. See Enable SSL for the Java Agent for an example.
Agent-to-Controller Connections and Enable SSL and SSH for Database Agent Communications in the AppDynamics documentation.
Which artifacts are needed, at minimum, to add a custom extension to a Machine Agent?
Answer(s): A
To add a custom extension to a Machine Agent, you need at least three artifacts: a directory, a jar or script file, and a monitor.xml file. The directory is where you place your extension files under the <machine_agent_home>/monitors directory. The jar or script file is the executable file that collects and reports the custom metrics to the Machine Agent. The monitor.xml file is the configuration file that defines the name, frequency, and parameters of your extension. You can also optionally include other files such as libraries, configuration files, or templates for your extension.
Build a Monitoring Extension Using Scripts, Extensions and Custom Metrics
An administrator is asked to improve the capacity of an Events Service cluster.What is the recommended way to add capacity to the cluster?
Answer(s): B
According to the Cisco AppDynamics Professional Implementer (CAPI) documents, the recommended way to add capacity to the Events Service cluster is to add nodes running on machines with identical hardware matching the existing nodes. This will increase the data storage, replication, and redundancy of the cluster, as well as the processing power for queries. The Events Service cluster is horizontally scalable, so nodes can be added as your data storage requirements grow. The Events Service must run on dedicated machines with identical directory structures, user account profiles, and hardware profiles. For heap space allocation, AppDynamics recommends allocating half of the available RAM to the Events Service process, with a minimum of 7 GB up to 31 GB1. Solid-state drives (SSD) can significantly outperform hard disk drives (HDD), and are therefore recommended for production deployments.The incorrect options are:Add a new Events Service cluster to share the load. (A) This is not recommended because it will create additional complexity and overhead for managing multiple clusters and routing data and queries to the appropriate cluster. It will also require more license units to enable analytics on multiple clusters.Add more storage to the master nodes of the cluster. © This is not recommended because it will not increase the data replication and redundancy of the cluster, nor the processing power for queries. It will also create an imbalance in the cluster, as the master nodes will have more storage than the worker nodes, which may affect the performance and stability of the cluster. Add more storage to as many of the existing nodes as possible. (D) This is not recommended because it will not increase the data replication and redundancy of the cluster, nor the processing power for queries. It will also create an imbalance in the cluster, as some nodes will have more storage than others, which may affect the performance and stability of the cluster.
1: Cisco AppDynamics Professional Implementer (500-430)2: Events Service Requirements - AppDynamics3: Events Service Deployment - AppDynamics4: Events Service Deployment - AppDynamics
Which type of Alert and Respond action is available only on an on-premises Controller?
Answer(s): D
A custom action is a type of Alert and Respond action that allows you to integrate AppDynamics notifications with your own alerting or ticketing system. You can create a custom action by writing an executable script and an XML file that describe how to pass information from AppDynamics to your system. A custom action can be triggered by a policy based on a health rule violation or an event. A custom action is available only on an on-premises Controller, because it requires access to the Controller file system and the ability to execute scripts on the Controller host machine. For a SaaS Controller, you can use HTTP request templates instead of custom actions to integrate with external systems.
Build a Custom Action, Alert and Respond, Actions, Custom Actions
Which implementation mode should be used when deploying an EUM Server with reverse proxy from a security and performance standpoint in a production environment?
The EUM Server is the on-premises version of the EUM Cloud that receives, processes, and stores data from EUM agents. For production installation, AppDynamics recommends that the EUM Server and the Controller sit on different hosts, and the EUM Server hosts its own MySQL instance. This improves the scalability and performance of both components. Moreover, AppDynamics strongly recommends that SSL traffic from agents to the EUM Server is terminated at a reverse proxy that sits in front of the EUM Server in the network path, and forwards connections to the EUM Server using HTTP. This relieves the SSL processing load from the EUM Server, simplifies the certificate management, and enhances the security by isolating the EUM Server from the external Internet. Therefore, the best implementation mode for deploying an EUM Server with reverse proxy in a production environment is option D.
EUM Server Deployment, Install a Production EUM Server, Reverse Proxy configuration for EUM, and Browser EUM installation in the AppDynamics documentation and community.
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