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The F5 Certification is excited to announce that all five of the NEW F5 Certified BIG-IP Administrator Certification (F5 CAB) exams are now live and available to schedule via the new Education Services Portal.

The F5 Academy Roadshow is rolling into 19 cities (plus two virtual stops), and if you work with apps, APIs, or infrastructure, this event was built for you.

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 \n  This iRULE requires each pool have 1 member, and the last pool has all the combined members and it is equally balanced or prioritized. \n  The goal is when a client enters http://your.domain.com/?sid=P01 it will be directed to a specific pool.   \n  If there is no URI, then look for a user-name in the http-header that that information and use CRC32 and create HASH number.   \n  That number will be used to direct clients to a specific pool.  If there is no URI or user-name then do standard load balancing. \n  \n when HTTP_REQUEST { \n  This IF statement queries the URI to look for PO after a ? \n if { [HTTP::query] contains \"P0\" } {  \n  \n  Takes the URI after ? skips 5 characters and sends the rest of the string to a variable. \n  For example, URI = /?sid=P01.  Looks at everything after ?, skips sid=P, scans the next 2 charcters/numbers  \n  and sends the characters to the variable serverid. \n set serverid [substr [HTTP::query] 5 2] \n  \n  If another node is added to opentv, another pool statement must be added to the switch statement. \n switch $serverid { \n 01 { pool pool_foobar.foo.com_01 } \n 02 { pool pool_foobar.foo.com_02 } \n 03 { pool pool_foobar.foo.com_03 } \n 04 { pool pool_foobar.foo.com_04 } \n } \n } \n This statement checks to see if the is a user-name\" \n elseif { [HTTP::header exists \"user-name\"] } { \n  This creates a unique number using crc32 based on user-name in the http header and assigns it to a variable.  \n  This unique number is passed to poolnum \n set poolnum [crc32 [HTTP::header \"user-name\"]] \n  \n  The following takes poolnum variable, divides it by 4 and assigns the remainder to poolnum.  \n  This will result in the following answers 0,1,2,3.  If you divded by 5 then it's 0,1,2,3,4, etc,. \n  4 is equal to the total  of nodes in pool_foobar.foo.com_lb. \n  If a node is added then you must increment by N number of nodes that were added.   \n  I.E., if 2 nodes are added then 4 + 2 = 6. \n set poolnum [expr $poolnum % 4 ] \n  Increment the poolnum because we want a number higher then 0 to associate to a pool name. \n incr poolnum \n  If another node is added to application, another pool statement must be added to the switch statement \n switch $poolnum { \n 1 { pool pool_foobar.foo.com_01 } \n 2 { pool pool_foobar.foo.com_02 } \n 3 { pool pool_foobar.foo.com_03 } \n 4 { pool pool_foobar.foo.com_04 } \n      } \n } \n } \n  \n  Triggered when the selected server fails in the selected pool, all connections on the failed node will be forced to reparticipate in load balancing. \n when LB_FAILED {  \n  if { [HTTP::header exists \"user-name\"] } { \n      set GOOD_NODES {} \n   When adding node then you must add the member node to NS \n      set NS {192.168.0.202 192.168.0.203 192.168.0.204 192.168.0.205} \n      foreach N $NS { \n         if { [LB::status pool pool_foobar.foo.com_lb member $N 8080] eq \"up\" } { \n            lappend GOOD_NODES $N \n         }       \n      } \n    set NODENUM [crc32 [HTTP::header \"user-name\"]] \n    set NODENUM [expr $NODENUM % [active_members pool_foobar.foo.com_lb] ] \n    LB::reselect pool pool_foobar.foo.com_lb member [lindex $GOOD_NODES $NODENUM] \n    } \n    else {  \n      pool pool_foobar.foo.com_lb \n      LB::reselect \n    } \n } \n 

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