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Manual Chapter: Monitoring Object and Device Performance
Manual Chapter
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12 
You can use the Enterprise Manager system to monitor the health, performance, and status of the F5 Networks® devices in your network at both the device and object level. This can assist you in determining when you need to add new devices and help you identify any systems that are not performing at full capacity.
After you start collecting statistics, you can also use the Enterprise Managers alerting feature to provide you with additional notification, beyond red-line warnings on the Statistics screen, when an object threshold is met. See Creating alerts for Enterprise Manager, for information about creating alert instances.
Important: Due to the processing power required to monitor and store statistical information, performance monitoring is active only for Enterprise Manager 3000 and 4000 platforms. Additionally, if you upgraded to the current version of Enterprise Manager from a version prior to 1.7, you must re-license the system before using the performance monitoring features.
The statistics collection feature is disabled by default. When you enable statistics collection, Enterprise Manager checks each managed device to verify that it has an updated version of the big3d agent to use for statistics collection. If the version of the big3d agent is compatible, Enterprise Manager starts building a statistics database for all devices, according to the default statistics profile for each managed device.
Note: If Enterprise Manager determines that the version of BIG-IP® and the big3d agent are incompatible, it marks the device as Impaired in the device list, and displays a message indicating that an upgrade is recommended or required. See Collecting statistics data. for information about how to run the Data Collection wizard and resolve the incompatibility issue.
1.
On the Main tab, expand Enterprise Management and click Statistics.
The Device Profiles screen opens.
2.
From the Options menu, choose Data Collection.
The Data Collection options screen opens.
3.
In the Statistics Data Collection table, for Collect Statistics Data, select Enabled.
4.
Click Save Changes.
You use a statistics profile to specify the type of information that you want Enterprise Manager to collect. These statistics can include such things as bytes and packets in and out of the device, connections made on the device, CPU utilization, memory, and disk usage. The statistics profile types correspond to the type of object you want to monitor: device, virtual server, pool, or node.
When configuring monitoring, for your devices you can use the following statistics profiles, or a combination of both, for the objects in your network.
Standard statistic profiles
These profiles contain default metrics to collect and threshold values optimized for specific objects. You cannot modify standard statistics profiles. The default data collected is: Device Global, Device Chassis, Device CPU, Device Disk Space, Device UDP, Device TCP, Device HTTP, Device Client SSL, LTM Virtual Server, LTM Pool, and LTM Node.
Custom statistics profiles
These are profiles that you create and for which you define metrics and optional threshold values. By enabling or disabling data collection on certain metrics, you can prioritize the information you are collecting, ensuring that your system resources are allocated appropriately. For information about custom statistics profile, see Using custom statistic profiles.
The standard profile contains default threshold values that represent the known minimum or maximum values for certain device statistics. You cannot modify or delete a standard profile.
1.
On the Main tab, expand Enterprise Management and click Statistics.
The Device Profiles screen opens.
2.
On the menu bar click Device Profiles, Virtual Server Profiles, Pool Profiles, or Node Profiles, depending on the object profile you want to view.
The profile screen of the object type you selected opens.
3.
Click the profile name containing *Standard to view the standard profile for the object type you selected.
The threshold information for the standard profile you selected appears.
You can assign the same statistics profile to a number of objects in the same object class, or a number devices. By doing so, you can make a change to the statistics profile that affects all devices, or all objects within the same class that are assigned that particular profile. This makes managing larger groups of objects or devices more efficient.
Note: When you apply a new custom profile to a device or network object, you receive a message alerting you that the profile is being reconfigured. Statistics collection continues when additional metrics data is received.
1.
On the Main tab, expand Enterprise Management and click Devices.
The Device list screen opens.
2.
3.
From the Statistics menu, choose Configure.
The device selection and monitoring profile information appears.
5.
Specify whether you want to enable or disable statistics collection on the device, by selecting either Enabled or Disabled from the Collect Statistics Data list.
6.
From the Object Type list, select Device.
7.
In the Device Name table, from the Associated Profile list, select a profile that you want to assign to the corresponding device.
8.
Click Save Changes to save the configuration.
1.
On the Main tab, expand Enterprise Management and click Devices.
The Device list screen opens.
2.
In the Device Name column of the Device List table, click the link for the device to which you want to assign a performance monitoring profile.
The Device Properties screen opens.
3.
From the Statistic menu, choose Configure.
The device selection and monitoring profile information appears.
5.
Specify whether you want to enable or disable statistics collection on the object, by selecting either Enabled or Disabled from the Collect Statistics Data list. The statistics are marked Enabled by default.
6.
From the Object Type list, select the type of object to which you want to assign a performance monitoring profile.
The screen displays the appropriate object type table, listing the names of the objects and their associated profiles.
8.
From the Associated Profile list, select the statistics profile to which you want the corresponding object associated.
Tip: To assign the same profile to all of the objects in the object list, click the Copy to List button on the top, right side of the table. The profile you select for the first object populates to all other objects in the list on that screen. If the list of objects extends to multiple screens and you want to use the Copy to List feature for all the objects on all screens, you must assign the profile on each of the screens separately.
9.
Click Save Changes.
To ensure that new devices are monitored from the moment they are discovered by Enterprise Manager (provided that you enable statistics collection as described in Enabling statistics collection), you can assign a default statistics profile that all newly discovered devices use. Each time the system discovers a new device, this default statistics profile is applied to the device, until you change the profile.
1.
On the Main tab, expand Enterprise Management, and under Devices, click Statistics.
The Device Profiles screen opens.
2.
Click Device Profiles, Virtual Server Profiles, Pool Profiles, or Node Profiles, depending on the type of object for which you want to collect data.
The screen refreshes to display information specific to the object type.
3.
From the Profile Name list, select the profile that you want to assign to newly discovered devices.
4.
Click Save Changes.
You can override a default profile by assigning a new statistics profile to a newly discovered device, or by assigning a custom profile to a device.
In most cases, the standard profile is best for monitoring the performance of F5 devices in your network. However, if you want to include additional metrics, exclude certain metrics, or change default thresholds you can create a custom profile.
A custom profile allows you to tailor metrics and thresholds to use for a specific device or object. You can select from a number of hardware, traffic, and connection related areas, designating minimum and maximum thresholds you want to collect.
When you create a new custom profile, you can base it on an existing profile (including a standard profile), changing the collected metrics and thresholds as required.
1.
On the Main tab, expand Enterprise Management and click Statistics.
The Device Profiles screen opens.
2.
Depending on the type of custom profile you want to create, on the menu bar, click Device Profiles, Virtual Server Profiles, Pool Profiles, or Node Profiles.
The profile screen of the object type you selected opens.
3.
Click the Create button at the top of the profiles table.
The New Profile screen opens.
4.
From the Profile Source list, select an option based on your intent:
To use an existing profiles metric collection settings as a template for a new profile, select a profile name from the list.
The profile metrics appear for the profile source you select.
5.
In the Name box, type a name for the profile.
6.
In the Description box, type a description for the statistics profile.
7.
From the Collection Interval list, select the interval at which you want the data collected for the profile.
Note: Frequent data collection requires more storage space, which reduces the total amount of historical data you can store.
8.
In the Profile Metrics table, check the Collect Data select box for the metrics you want to collect.
9.
To specify thresholds, type a value in the Minimum Threshold and Maximum Threshold boxes.
Note: Enterprise Manager collects data for any metrics you select whether or not you specify a threshold value. You can specify thresholds for the metric, or leave the threshold information blank. When you leave a threshold value blank for a metric, the system does not account for threshold values for that metric.
10.
Click the Finished button at the bottom of the list.
The Device Profiles screen opens, displaying the new performance monitoring profile.
To view the properties of the custom profile you created, click the profile name link in the Profile Name column of the profiles table.
1.
On the Main tab, expand Enterprise Management and click Monitoring.
The Device Profiles screen opens.
2.
In the object profile table, check the select box next to the Profile Name of the profile you want to delete, and click the Delete button.
3.
Click the Delete button under the Delete Confirm table to complete the deletion process.
Once you assign statistics profiles to objects, you can access a graphical representation of the information statistics collected. You can view the collected statistics information in a summary or a detailed graph format to determine the health and activity of your network objects and devices at a glance. Data refreshes at 60-second intervals.
1.
On the Main tab, expand Enterprise Management and click Devices.
The Device list screen opens.
2.
On the menu bar, click Statistics.
The Statistics screen opens.
3.
In the Object Type list, select the object type for the statistics you want to view.
The screen refreshes to display the information related to the object type you selected. Statistics appear in a summary graph. If there are no statistics for the object type you selected, the Data column in the device name list table shows No Data.
4.
From the Time Span list, select a time range to display as much data as needed. The system limits the display to the most recent data collected.
5.
To review details about the utilization of a device, move your cursor over a graph.
A box displays additional information about the device.
6.
To view a detail graph for each summary data graph displayed, click a summary data graph.
The detailed graph view displays the monitor name, the object instance that the system monitors, and a graphical representation of the statistical data according to the value you selected as a time span for statistics collection.
By default, Enterprise Manager displays up to eight records per screen. If there are more than eight graphs, the screen displays a link to the graphs, where you can view up to 11 graphs.
Tip: To change the number of devices displayed, in the navigation pane, click System, then click Preferences and change the Records Per Screen setting. This is a global setting and changes affect all list screens on the Enterprise Manager system. Note that performance could be affected if you select a large number of items to display on a screen.
On the Statistics screen, you can specify what you want displayed in the summary graphs by selecting an option from the Rule list. For example, if you select Device Health, the graphs change to display a set of graphs that display statistics related to the physical health of the device such as chassis temperature, CPU fan speed, and processor utilization percentage.
Table 12.1 outlines the viewing options available from the Rule list.
2.
Select a rule from the Rule list in the Statistics Selection table.
3.
For Time Span, select a time range for viewing collected data. The data displayed is limited to the most recent data collected.
Enterprise Manager stores your statistics data until the system reaches the storage capacity you set. Once this space is filled, it replaces the oldest data in the system with new data.
When you enable statistics collection, it affects the overall performance of Enterprise Manager. Therefore, it is important to plan for your systems database storage needs by understanding your systems capacity and estimating your storage requirements in order to maximize the value of the statistics features.
The Enterprise Manager systems default value of 1 GB for statistics data storage is intentionally low, allowing you to establish a reasonable value based on your environment. Once you have estimated the availability of storage on your system, you can change the default database maintenance storage capacity setting of 1 GB, using the procedure To configure statistics data storage.
There are a number of ways to manage your storage needs, including estimating your storage capacity, creating remote backups of the information you no longer need, setting statistics storage limits, and creating alerts to warn you when you reach a storage capacity threshold on your system.
The statistics database shares drive space on the Enterprise Manager system with software images, attack signature files, system logs and backups, and so on. Depending on how many devices and objects for which you want to collect statistics, the size of the statistics database may be limited by how many other parts of the Enterprise Manager system are using the shared file system. The size of the database affects how long you can store statistical data, and how you use graphs over time to identify trends.
To determine how the system is allocating disk space, you can use the System Information screen. Additionally, you can create a system alert to notify you when you meet a threshold for statistics data storage. For information on creating an Enterprise Manager system alert, see Creating alerts for Enterprise Manager.
On the Main tab, expand Enterprise Management, and click System Information.
The System Information screen presents both visual and textual representations of how Enterprise Manager allocates disk space.
Enterprise Manager provides information about the amount of space available for the storage of statistics, the amount of space currently in use for statistics data, and the estimated number of days of storage with the current data allocation.
To determine the allocation of resources on the drive, as well as estimate the storage capacity, you can recalculate the estimated days of storage without committing the change. When you have determined that you are satisfied with the storage space value, you can opt to save the changes.
Important: If you modify the Allocated Statistic Storage Space setting to a value less than the current value, Enterprise Manager erases the entire database to reclaim all of the available space and rebuilds the database to the lowered limit. If you increase the value, the system does not truncate any data. To avoid losing any stored statistics, perform a database backup prior to changing the allocated statistics storage space. See Backing up statistics data, for information about backing up your statistics database.
1.
On the Main tab, expand Enterprise Management and click Statistics.
The Device Profiles screen opens.
2.
From the Options menu, choose Data Storage.
The Data Storage screen opens.
3.
Review the available statistics storage space, statistic storage currently in use, and the estimated statistic storage space with the current settings.
4.
To determine the allocation of resources that best suits your performance needs, type a value in the Allocated Statistic Storage Space box, in gigabytes, and click Recalculate.
The system recalculates statistic storage based on the change, without saving the configuration.
5.
When you are satisfied with the allocation of statistic storage, click the Save Changes button to commit the configuration changes.
You can configure the Enterprise Manager system to allow remote access to the statistics database (MySQL database) from a third-party database browsing or editing tool, and then schedule a regular backup interval.
The MySQL database listens on port 3306 of your Enterprise Manager system when data collection is enabled (see Enabling statistics collection). You can query database information, review overall system statistics, create your own graphs and reports, and save the data outside of Enterprise Manager before database maintenance occurs.
Username: f5em_client
Password: default
Database name: f5em_client
1.
On the Main tab, expand Enterprise Management and click Statistics.
The Device Profiles screen opens.
2.
From the Options menu, choose Remote Access.
The Remote Access Options screen appears.
3.
In the Statistics Database Remote Access table, check the Allow Remote Access box.
Additional options appear.
4.
For Password, change the password, default, to a new password.
5.
In the Confirm Password box, type the new password again.
6.
Click Save Changes to save the remote access configuration.
The system uses the user name f5em_client and the password you provided to access the remote database.
Once you have remote access to the statistics database, you can schedule regular remote statistics database backups to maximize your storage availability. You can schedule a regular backup of the statistics database to a remote server on a daily, weekly, or monthly schedule at a specific time of day that you specify.
Enterprise Manager uses an rsync process to send the statistics database to a remote server. Before you configure a backup schedule, you must first perform a manual key exchange between Enterprise Manager and the remote system to which you want to back up the data.
This creates two files, /root/.ssh/id_dsa and /root/.ssh/id_dsa.pub, on the Enterprise Manager system, which are the private key and public key, respectively.
3.
Copy /root/.ssh/id_dsa.pub to the destination server by typing the following command, where <destination IP> is the IP address of the remote server:
5.
To create the /home/em_backup/.ssh directory on the remote server, type the following commands, and press Enter after each:
cat /home/em_backup/id_dsa.pub >> /home/em_backup/.ssh/authorized_keys2
7.
Depending on the version of OpenSSH included, you may need to type the following commands, and press Enter after each:
cat /home/em_backup/id_dsa.pub >> /home/em_backup/.ssh/authorized_keys
8.
On the Enterprise Manager system, at the command line, test the connection using SSH with the following command, where <destination IP> is the IP address of the remote server:
1.
On the Main tab, expand Enterprise Management and click Tasks.
The Task screen opens.
2.
On the menu bar, click Schedules.
The Task Schedules screen opens.
3.
From the Backup Data list, select an interval to back up the statistics database.
Additional boxes for Day of the Month or Day of the Week, and Start Time appear depending on the option you choose for backup.
4.
For Day of the Month or Day of the Week, select a day on which you want Enterprise Manager to back up the database.
5.
For Start Time, set a time for the system to back up the database.
6.
For Username, type the user ID that you use to log on to the remote system
7.
For Hostname, type the FQDN of the remote system where you plan to back up the statistics database.
8.
For Path, type the file path on the remote system.
9.
Click Save Changes.
If the Enterprise Manager system is configured as a high availability system, you can back up your systems monitoring information by regularly running the ConfigSync task. See Configuring Enterprise Manager as a high availability system, for more information.
In the high availability configuration, you can schedule and configure the inclusion or exclusion of statistics data on the Enterprise Manager system. For more information about this process, see Setting up a high availability Enterprise Manager system.
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