Applies To:Show Versions
BIG-IP Link Controller
Implementing Health and Performance Monitoring
Overview: Health and performance monitoring
- Monitor types
- Every monitor, whether pre-configured or custom, is a certain type of monitor. Each type of monitor checks the status of a particular protocol, service, or application. For example, one type of monitor is HTTP. An HTTP type of monitor allows you to monitor the availability of the HTTP service on a pool, pool member, or node. A WMI type of monitor allows you to monitor the performance of a pool, pool member, or node that is running the Windows Management Instrumentation (WMI) software. An ICMP type of monitor simply determines whether the status of a node is up or down.
- Monitor settings
- Every monitor consists of settings with values. The settings and their values differ depending on the type of monitor. In some cases, the BIG-IP system assigns default values. For example, the following shows the settings and default values of an ICMP-type monitor.
Name my_icmp Type ICMP Interval 5 Timeout 16 Transparent No Alias Address * All Addresses
for implementing health and performance monitoring
Creating a custom monitor
- On the Main tab, click.The Monitors List screen opens.
- ClickCreate.The New Monitor screen opens.
- In theNamefield, type a name for the monitor.
- From theTypelist, select the type of monitor.The screen refreshes, and displays the configuration options for the monitor type.
- From theImport Monitorlist, select an existing monitor.The new monitor inherits initial configuration values from the existing monitor.
- From theConfigurationlist, selectAdvanced.This selection makes it possible for you to modify additional default settings.
- Configure all settings shown.
Creating a load balancing pool
- On the Main tab, click.The Pool List screen opens.
- ClickCreate.The New Pool screen opens.
- In the General Properties area, in theNamefield, type a name for the pool.Names must begin with a letter, and can contain only letters, numbers, and the underscore (_) character.The pool name is limited to 63 characters.
- From theTypelist, depending on the type of the system (IPv4 or IPv6), select either anAorAAAApool type.
- In the Configuration area, for theHealth Monitorssetting, in theAvailablelist, select a monitor type, and move the monitor to theSelectedlist.Hold the Shift or Ctrl key to select more than one monitor at a time.
- In the Members area, for theLoad Balancing Methodsettings, select a method that uses virtual server score:
- VS Score - If you select this method, load balancing decisions are based on the virtual server score only.
- Quality of Service - If you select this method, you must configure weights for up to nine measures of service, includingVS Score. Virtual server score then factors into the load balancing decision at the weight you specify.
- For theMember Listsetting, add virtual servers as members of this load balancing pool.The system evaluates the virtual servers (pool members) in the order in which they are listed. A virtual server can belong to more than one pool.
- Select a virtual server from theVirtual Serverlist.
Creating a virtual server
- On the Main tab, click.The Virtual Server List screen opens.
- ClickCreate.The New Virtual Server screen opens.
- In theNamefield, type a unique name for the virtual server.
- In theDestination Address/Maskfield:
The supported format is address/prefix, where the prefix length is in bits. For example, an IPv4 address/prefix is10.0.0.1or10.0.0.0/24, and an IPv6 address/prefix isffe1::0020/64or2001:ed8:77b5:2:10:10:100:42/64. When you use an IPv4 address without specifying a prefix, the BIG-IP system automatically uses a/32prefix.The IP address or addresses for this field must be on the same subnet as the external self-IP address.
- If you want to specify a single IP address, confirm that theHostbutton is selected, and type the IP address in CIDR format.
- If you want to specify multiple IP addresses, select theAddress Listbutton, and confirm that the address list that you previously created appears in the box.
- From theService Portlist, select*All Ports.
- In the Resources area of the screen, from theDefault Poollist, select the relevant pool name.