Working with Management Central monitors

Management Central monitors can be used to check your system performance, your jobs and servers, your message queues, and changes to selected files.

You can specify thresholds for various metrics on these monitors, and then specify actions to be taken whenever a monitor detects that a threshold has been triggered. For example, you can run an IBM® i command or start a program when the threshold is triggered. For specific examples that describe how you can use these monitors, see the related concept Scenarios: Performance.

You can use a system monitor to see detailed graphs that monitor the real-time performance of multiple IBM i operating system. In the Graph History window, you can see a graphical view of the metrics that have been collected for an extended period of time by Collection Services. You can contrast this data with the real-time data for the last hour shown in a System Monitor window.

You can monitor your jobs and servers with a job monitor. For example, you might want to monitor a job's CPU usage, job status, or job log messages. For each of those metrics, you can specify a threshold and actions to take when that threshold is triggered. For example, you could set up your monitor to send a message to the system operator whenever the CPU usage exceeds a certain threshold. In addition to the IBM i commands, you can use the Advanced Job Scheduler Send Distribution using JS (SNDDSTJS) command. This command notifies someone by e-mail that the threshold is exceeded, if the Advanced Job Scheduler (5761-JS1) licensed program is installed on the endpoint system.

You can create a message monitor to take action on a list of messages that are important to you. For example, when the message monitor detects CPI0953 (threshold of a disk pool is exceeded), you could specify to run a command that deletes objects that you no longer need from the disk pool.

You can use a file monitor to monitor for a specified text string or for a specified size. Or, you can monitor for any modification to one or more selected files. You can select one or more files to be monitored, or you can select the History log option, which will monitor the IBM i history log (QHST).
Note: Integrated file system treats QSYS physical files as directories, with the physical file members actually treated as files.

You can use a B2B activity monitor to view a graph of active transactions over time, and you can run commands automatically when thresholds are triggered. You can search for and display a specific transaction as well as view a bar graph of the detailed steps of that specific transaction.

In System i® Navigator, or on your PC. You can choose to be informed by an audible or visible alarm on your PC when important thresholds are reached. The monitor continues to run and perform any threshold commands or actions you specified. Your monitor runs until you decide to stop it. You can view all your monitors, as well as all your Management Central tasks, remotely with System i Access for Wireless.

In the Management Central properties, you can specify whether you want the central system to automatically attempt to restart your monitors on endpoint systems where they failed to start. If you select to have the system automatically attempt to restart your monitors, you may also specify how long you want the central system to keep trying to restart the monitors and how often you want the system to try during that time period. For example, if you want the system to try to restart monitors every five minutes for a period of 3 hours, you can select Automatically restart monitors on failed systems, and then specify 180 minutes for How long to attempt restart and 5 minutes for How often to attempt restart.

The steps to create and run a monitor are basically the same for whichever type of monitor you choose to run.

To view or download a PDF version of this topic, select Working with Management Central monitors (about 194 KB)