JBoss Operations Network 3.1.2
tuning server and agent configuration
Both servers and agents in JBoss ON can be configured to improve performance within your specific environment. High availability, affinity, and failover settings all improve performance large JBoss ON deployments. Other settings related to tasks like discovery and monitoring can be tuned to provide better performance and quality within your specific environment.
This guide provides information to understand and edit JBoss ON server and agent configuration.
1. About JBoss Operations Network
The primary use for JBoss ON is to give administrators a single point of access to view their systems. Functionally, that means that JBoss ON provides a means to develop and monitor a system's inventory. Every managed resource – from platforms to applications to services – is contained and organized in the inventory, no matter how complex the IT environment is.
JBoss ON centralizes all of its operations in an installed server. The JBoss ON server communicates with locally installed JBoss ON agents, which interact directly with the platform and services to carry out local tasks such as monitoring. The types of resources that can be managed by JBoss ON and the operations that can be carried out are determined by the server and agent plug-ins which are loaded in JBoss ON.
The relationships between servers, agents, plug-ins, and resources are what define JBoss ON.
1.1. About JBoss ON Agents
JBoss ON agents are deployed on every machine that JBoss ON manages. The agent is an intermediary between the resource itself and the central JBoss ON server.
The agents receive updates like configuration changes, updated packages, new settings for alerts, and operations from the JBoss ON server and then it carries out those tasks on the resource. The agent also collects information from the resource which it forwards to the server. This allows the server to process alerts, metrics, and availability information for the resource.
Because the agent is independent of the server, it can continue with its monitoring tasks and gather information about the resource even if the server is down or the resource loses network connectivity.
Each resource is arranged in a hierarchy, showing relationships between platforms, servers, and services. Only one agent is required per machine; once the platform is managed as a resource, all or a subset of installed applications or services can be added as resources, all using the same local agent.
1.2. About JBoss ON Servers
JBoss ON is built around a central server. The server performs two vital functions:
The JBoss ON server is the central location for administrators to manage an operating environment. The server is used to set baseline configuration and provision applications, to define alerts and notifications, and to initiate operations. As agents send information back to the server from the resource, then the server can also perform monitoring tasks (by providing metrics and reporting) and can also respond to events by sending alerts or launching operations.
The data used by the JBoss ON server is stored in a backend SQL database. These data include:
The inventory of resources
The configured groups
Content available to resources
User and access control information
The JBoss ON server hosts the graphical user interface which is used to interact with JBoss ON.
One very important aspect of JBoss ON servers is this: they only communicate with the backend database and the JBoss ON agent. As long as JBoss ON servers use the same backend database, they are automatically included in a server cloud that allows for failover and scalability, without additional configuration in the servers or the database. JBoss ON agents can be configured to use a list of preferred JBoss ON servers, which naturally distributes the agent load among the servers and provides agent-server failover without detailed configuration.