Manual Chapter : Monitoring application service host devices

Applies To:

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BIG-IQ Centralized Management

  • 8.0.0
Manual Chapter

Monitoring application service host devices

Monitor application service host devices

You can monitor the BIG-IP devices that host your application services for performance and resource issues. Although device heath does not directly impact an application's health status, a device's ability to manage traffic may eventually impact application performance (e.g. when a DoS attack increases traffic processed by the BIG-IP device). When, By monitoring devices of applications with low health, you can evaluate whether these device issues will require mitigation or prevention measures.
  1. Go to
    Applications
    APPLICATIONS
  2. Select the application name that hosts the application service with lowered health.
    Only TCP and HTTP application services provide device information. For DNS application services, you can use Wide IP alerts to evaluate device management of DNS traffic.
  3. Select the name of the application service.
    The application service's dashboard is displayed. Ensure the
    ANALYTICS
    tab at the center of the screen is selected
  4. Click the icon under
    ENVIRONMENT
    , as shown in the image.
    The charts display average data for all devices that manage the application.
  5. Using the menu to the left of the chart, select the type of data you would like to evaluate.
    To filter chart data, based on a specific BIG-IP blade, CPU core, or interface name, expand the dimensions pane to the right of the chart. You can then expand the dimension widget and select a specific object by which to filter data.

Application service device charts

This table describes the menu options and charts found in the application service dashboard (
Applications
APPLICATIONS
<Application Name>
<Application Service>
). Select the option marked in the image to view charts at the bottom of the screen. These charts display the trends of the host BIG-IP device, or service scaling group. Each chart displays an aspect of the devices as a function of the selected time period.
ANALYTICS Menu Option
Description
CPU Usage
The percentage of CPU usage based on overall and specific activities of the BIG-IP system devices.
Metric Unit: Percent
Legend:
User: The average percentage of CPU usage for the all the BIG-IP user space programs over a given time period.
System: The average percentage of CPU usage for all the running BIG-IP systems over a given time period
I/O Wait: The percentage of time (during the selected time period) that a given CPU is idle for an I/O wait operation. This occurs when at least one outstanding I/O disk operation is requested by a task scheduled on system CPU.
Stolen: The percentage of time a virtual CPU waits for real CPU when the hypervisor is servicing another virtual machine.
Top Cores
The six, most active CPU cores for all monitored BIG-IP devices.
Metric Unit: Percent
Legend:
CPU core
Memory
The percentage of RAM used by system processes of the monitored BIG-IP devices.
Metric Unit: Percent
Legend:
TMM: The average percentage of RAM used by device TMM processes.
Total: The average percentage of RAM used by all devices
Other: The average percentage of used RAM from non-TMM processes.
Throughput
The average rate of traffic (in bytes) processed by the BIG-IP device interfaces.
Metric Unit: Average/s
Legend:
In: The average rate of incoming traffic to the BIG-IP devices.
Out: The average rate of outgoing traffic from the BIG-IP devices.
Connections
The average number of connections that are open at the same time, on either the client-side or the server-side.
Metric Unit: Count
Legend:
Client Side: The average number of concurrent connections at the client side.
Server Side: The average number of concurrent connections at the server side.
HTTP
The transaction includes all HTTP request and response messages passed between the client, BIG-IP system, and server.
Metric Unit: Average/s
Legend:
Transactions: Average number of HTTP transactions per second that were processed by the BIG-IP devices.
Dropped
The average rate of packets per second (pps) that were dropped by the BIG-IP device interfaces or discarded by the TMM over the course of the transaction.
Metric Unit: Average/s
Legend:
In: The average rate of packets per second that were dropped by the BIG-IP interface.
Out: The average rate of packets per second that were accepted by the BIG-IP interface, but discarded by the TMM.
Errors
The average rate packets per second (pps) that were corrupted or arrived incomplete over the course of the transaction across the network,
Metric Unit: Average/s
Legend:
In: The average packets per second received as throughput error.
Out: The average packets per second transmitted out at throughput error.

Device health metrics

The following list defines metrics sets and their corresponding metrics for the application statistics displayed in the dimensions pane table in the
Device Health
screen of the GUI. Each table row is read from left to right, where each metric set is defined as it would relate to each listed dimension, and each metric corresponds to its metric set.
Dimension
Metric Set
Metric Set Definition
Metric
Metric Definition
BIG-IP Host Names
BIG-IP Blades
Process Name
Process ID
BIG-IP Modules
CPU
The percent CPU usage based on overall and specific activities of the BIG-IP system devices.
System
The average (percent) CPU usage for all the running BIG-IP systems over a given time period.
User
I/O Wait
The percentage of time (during the selected time period) that a given CPU is idle for an I/O wait operation. This occurs when at least one outstanding I/O disk operation is requested by a task scheduled on system CPU.
Stolen
The percentage of time a virtual CPU waits for real CPU when the hypervisor is servicing another virtual machine.
Usage
The percent CPU usage for the various processes used bu the BIG-IP system.
BIG-IP Host Names BIG-IP Blades
Memory Usage
The percent RAM used by system processes of the BIG-IP system devices.
Other
The average percentage of used RAM from other device processes.
TMM
The average percentage RAM used by device TMM processes.
Total
The average percentage of RAM used by the system's devices.
BIG-IP Host Names
BIG-IP Blades
BIG-IP CPU Cores
Disk Merges
The average rate of merges per second (merge/s) at which an application completes a read or write to a hard disk. This indicated the speed of successful disk merges.
Avg/s Read
The average rate per second that an application completes a read merge from the hard disk.
Avg/s Write
The average rate per second that an application completes a read merge from the hard disk.
BIG-IP Host Names
BIG-IP Blades
Disk Operations
The average rate of operations per second (Ops) at which an application completes a read or write to a hard disk. This operation indicates the speed at which an application saves or extracts data from a hard disk.
Avg/s Read
The average rate per second that an application completes a write merge from the hard disk.
Avg/s Write
The average rate per second that an application completes a write operation to the hard disk.
BIG-IP Host Names
BIG-IP Blades
Disk Throughput
The average rate of bytes per second (Bps) that the application reads or writes from hard disk data. This indicates the speed of the application for the client.
Avg/s Read
The average rate per second of bytes that application reads from the hard disk.
Avg/s Write
The average rate per second of bytes that application writes to the hard disk.
BIG-IP Host Names
Interface Names
Throughput Drops
The average rate of packets per second (pps) that were dropped by the BIG-IP interface or discarded by the TMM over the course of the transaction.
Avg/s Out
The average rate of packets per second that were accepted by the BIG-IP interface, but discarded by the TMM.
Avg/s In
The average rate of packets per second that were dropped by the BIG-IP interface.
Total Out
The total number of packets that were accepted by the BIG-IP interface, but discarded by the TMM.
Total In
The total number of packets that were dropped by the BIG-IP interface.
BIG-IP Host Names
Interface Names
Throughput Error
The average rate packets per second (pps) that were corrupted or arrived incomplete over the course of the transaction across the network.
Total In
The total number of packets received as throughput error.
Total Out
The total number of packets transmitted out as throughput error.
Avg/s In
The average packets per second received as throughput error.
Avg/s Out
The average packets per second transmitted out at through

Device traffic metrics

The following list defines metrics sets and their corresponding metrics for the application statistics displayed in the dimensions pane table in the
Device Traffic
screen of the GUI. Each table row is read from left to right, where each metric set is defined as it would relate to each listed dimension, and each metric corresponds to its metric set.
Dimension
Metric Set
Metric Set Definition
Metric
Metric Definition
BIG-IP Host Names
BIG-IP Blade Numbers
New Connections
The new connections opened with the BIG-IP system either from a client side or server side.
Avg/s Server
The average rate of new responses opened per second at the server side.
Avg/s Client
The average rate of new requests opened per second at the client side.
Total Client
The total number of new requests opened at the client side.
Total Server
The total number of new responses opened at server side.
BIG-IP Host Names
BIG-IP Blade Numbers
Concurrent Connections
The average number of connections that are open at the same time on the client-side and on the server-side.
Clients
The average number of concurrent connections at the client side.
Servers
The average number of concurrent connections at the server side .
BIG-IP Host Names
BIG-IP Blade Numbers
Bytes Avg/s
The average bytes per second that were transmitted through the BIG-IP system.
C→
The average number of bytes per second that were received into the system from the client.
→S
The average number of bytes per second that were received by the server from the system.
←S
The average number of bytes per second that were transmitted out of the server to the system.
C←
The average number of bytes per second that were transmitted out of the system to the client.
BIG-IP Host Names
BIG-IP Blade Numbers
Bytes Total
The total number of bytes that were transmitted through the BIG-IP system. This represents the total traffic in bytes that were handled by the BIG-IP system.
C→
The total number of bytes received into the system from the client.
→S
The total number of bytes transmitted out from the system to the server.
←S
The total number of bytes received into the system from the server
C←
The total number of bytes the system transmitted out to the client.
BIG-IP Host Names
BIG-IP Blade Numbers
Packets Avg/s
The average packets per second that were transmitted through the BIG-IP system. This represents BIG-IP system traffic in average packets per second .
C →
The average number of packets per second that were received into the system from the client.
→S
The average number of packets per second that were received into the server from the system.
←S
The average number of packets per second that were transmitted out of the server to the system.
C←
The average number of packets per second that were transmitted out of the system to the client.
BIG-IP Host Names
BIG-IP Blade Numbers
Packets Total
The total number of packets that were transmitted through the BIG-IP system. This represents the total traffic in packets that were handled by the BIG-IP system.
C→
The total number of packets received into the system from the client.
→S
The total number of packets transmitted out from the system to the server.
←S
The total number of packets received into the system from the server
C←
The total number of packets the system transmitted out to the client.
BIG-IP Host Names
BIG-IP Blade Numbers
Transactions
The transaction includes all request and response messages passed between the client, BIG-IP system, and server.
Avg/s
Average number of transactions per second that were processed by the system.
Total
Total number of transactions processed by the system.
Interface Names
Throughput Bytes
The bytes transmitted through the interface to the system.
Total In
The total number of interface bytes received into the system.
Avg/s In
The average number of interface bytes per second received into the system.
Avg/s Out
The average number of interface bytes per second transmitted out from the system.
Total Out
The total number of interface bytes transmitted out from the system.
Interface Names
Throughput Packets
The packets transmitted though the interface to the system.
Avg/s Out
The average number of interface packets transmitted out from the system per second.
Total Out
The total number of interface packets transmitted out from the system.
Avg/s In
The average number of interface packets received into the system per second.
Total In
The total number of interface packets received into the system.
Interface Names
Throughput Multicast
The multicast packets transmitted through the interface to the system.
Total In
The total number of interface multicast packets received into the system.
Total Out
The total number of interface multicast packets transmitted out from the system.
Avg/s In
The total number of interface multicast packets received into the system.
Avg/s Out
The average number of interface multicast packets transmitted out from the system per second.

Device health alerts

The device health alert notifies you of changes in device resource and throughput metric thresholds for your BIG-IP devices. To view your device health thresholds, go to the Alert Rules screen and select the default device rules (
Applications
ALERT MANAGEMENT
Alert Rules
.
Alert
Description
Indication
Default Thresholds
Action (if applicable)
Device Health
There has been a change in one or more of the of BIG-IP device health rule metrics.
One or more of the device resources and/or throughput measurements crossed a defined threshold, which may impact your BIG-IP device's performance.
For SSG devices: Customized rules per service scaling group.
For stand-alone BIG-IP devices: The default-active-device-health rules.
For SSG devices: A critical health status of your BIG-IP device might trigger a scale-out event. Investigate the active alerts for device metrics.
For stand-alone BIG-IP devices: Investigate BIG-IP devices with critical or moderate health to adjust or add resources.