VMware VIEW 4.5 Bedienungsanleitung PDF herunterladen (Seite 14)

2 - 3

Creating the Universal Inspection Engine persistence iRule

Using the following iRule, the BIG-IP LTM is able to direct traffic with

greater precision resulting in a more uniform load distribution on the

connection servers. Using the Universal Inspection Engine (UIE), the iRule

looks for session information so that the BIG-IP LTM can persist the

connections to the proper nodes. The View clients first use the session

information in a cookie, and then use it as an URI argument when the tunnel

is opened. The first response from the server contains a JSESSIONID

cookie. The iRule enters that session ID into the connection table and upon

further client requests looks for the information in a cookie or in the URI.

Important

For the following iRule to function correctly, you must be using the BIG-IP

LTM system to offload SSL transactions from the View implementation, as

described in this deployment guide.

To create the persistence iRule

1. On the Main tab, expand Local Traffic, and then click iRules.

2. Click the Create button.

3. In the Name box, type a name for this rule. In our example, we type

view-jsessionid.

4. In the Definition box, type the following iRule, omitting the line

numbers.

5. Click the Finished button.

when HTTP_REQUEST {

if { [HTTP::cookie exists "JSESSIONID"] } {

# log local0. "Client [IP::client_addr] sent cookie [HTTP::cookie "JSESSIONID"]"

set jsess_id [string range [HTTP::cookie "JSESSIONID"] 0 31]

persist uie $jsess_id

# log local0. "uie persist $jsess_id"

} else {

# log local0. "no JSESSIONID cookie, looking for tunnel ID"

set jsess [findstr [HTTP::uri] "tunnel?" 7]

if { $jsess != "" } {

# log local0. "uie persist for tunnel $jsess"

persist uie $jsess

}

when HTTP_RESPONSE {

if { [HTTP::cookie exists "JSESSIONID"] } {

persist add uie [HTTP::cookie "JSESSIONID"]

# log local0. "persist add uie [HTTP::cookie "JSESSIONID"] server: [IP::server_addr] client: [IP::client_addr]"

}

# when LB_SELECTED {

# log local0. "Member [LB::server addr]"

# }

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 37 38

Kommentare zu diesen Handbüchern

Keine Kommentare

VMware VIEW 4.5 Bedienungsanleitung Seite 14

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung VMware VIEW 4.5