ADC

Support for load balancing profile

A load balancing configuration has a large number of parameters, so setting the same parameters on a number of virtual servers can become tedious. From release 11.1, a load balancing (LB) profile makes this task easier. You can now set load balancing parameters in a profile and associate this profile with virtual servers, instead of setting these parameters on each virtual server.

The following parameters are presently supported in an LB profile:

  • HTTPonlyflag—Include the HttpOnly attribute in persistence cookies. The HttpOnly attribute limits the scope of a cookie to HTTP requests and helps mitigate the risk of cross-site scripting attacks.
  • UseSecuredPersistenceCookie—Encrypt the persistence cookie values by using a SHA2 hash algorithm.
  • Cookiepassphrase—Specify the passphrase used to generate a secured persistence cookie value.
  • DBS_LB—Enable database specific load balancing for MySQL and MSSQL service types.
  • Cl_process_local—Packets destined to a virtual server in a cluster are not steered. Enable option for single packet request response mode or when the upstream device is performing a proper RSS for connection based distribution.

Note

You can set DBS_LB and Cl_process_local parameters on a virtual server and in the profile. If you enable these parameters on a virtual server and then set a profile to this virtual server, the parameters appear as disabled in the output of the “show lb vserver” command for that virtual server. Check the profile to see the actual status of these parameters. In addition, if you set and then unset a profile to a virtual server, the parameters will be set with default values for that virtual server.

To create an LB profile by using the CLI

At the command prompt, type:

add lb profile  -dbsLb ( ENABLED | DISABLED ) -processLocal ( ENABLED | DISABLED ) -httpOnlyCookieFlag ( ENABLED | DISABLED ) -cookiePassphrase -useSecuredPersistenceCookie ( ENABLED | DISABLED ) 

Example:

add lb profile p1 Done show lb profile p1 LB Profile name: p1 DBS LB : DISABLED Process Local: DISABLED Persistence Cookie HttpOnly Flag: ENABLED Use Secured Persistence Cookie Flag: DISABLED No of vservers bound: 0 Done 

To create an LB profile by using the GUI

Navigate toSystem>Profiles>LB Profile, and add a profile.

To associate an LB profile with an LB virtual server by using the CLI

At the command prompt, type:

set lb vserver  -lbprofilename  

Example

set lbvserver lbvip1 -lbprofile p1 Done sh lb vserver lbvip1 lbvip1 (203.0.113.1:80) - HTTP Type: ADDRESS State: UP Last state change was at Wed May 25 12:36:20 2016 Time since last state change: 0 days, 00:01:26.140 Effective State: UP ARP:DISABLED Client Idle Timeout: 180 sec Down state flush: ENABLED Disable Primary Vserver On Down : DISABLED Appflow logging: ENABLED Port Rewrite : DISABLED No. of Bound Services : 2 (Total) 2 (Active) Configured Method: LEASTCONNECTION BackupMethod: ROUNDROBIN Mode: IP Persistence: NONE Vserver IP and Port insertion: OFF Push: DISABLED Push VServer: Push Multi Clients: NO Push Label Rule: none L2Conn: OFF Skip Persistency: None Listen Policy: NONE IcmpResponse: PASSIVE RHIstate: PASSIVE New Service Startup Request Rate: 0 PER_SECOND, Increment Interval: 0 Mac mode Retain Vlan: DISABLED DBS_LB: DISABLED Process Local: DISABLED Traffic Domain: 0 LB Profile: p1 Done 

To associate an LB profile with an LB virtual server by using the GUI

  1. Navigate toTraffic Management>Load Balancing>Virtual Servers.
  2. Select a virtual server, and clickEdit.
  3. InAdvanced Settings, clickProfiles.
  4. In theLB Profilelist, select the profile to associate with this virtual server.
Support for load balancing profile