What is I rule in F5?

An iRule is a script that you write if you want to make use of some of the extended capabilities of the BIG-IP that are unavailable via the CLI or GUI. iRules allow you to more directly interact with the traffic passing through the device.

How do I create a data group list in F5?

Log in to the Configuration utility.
Go to Local Traffic > iRules > Data Group List.
Select Create.
For Name, enter a name for the data group.
For Type, select (External File).
For File Name, select the file you imported from the list.
Select Finished.

How do you use the iRule on an F5?

How to add the iRule to your Virtual Server

On the Main tab, click Local Traffic > Virtual Servers.
Select the Virtual Server.
Select Resources tab.
Click Manage.
Select an iRule from Available list and add to Enabled list.
Click Finished.

What is LTM Data Group?

These groups define the type of data in the class, which can be IP addresses, strings, or integers> EXAMPLES create internal MyDG records add { 10.0.0.0 } type ip Creates an internal data group named MyDG that contains a single IP address.

What is f5 data Group?

A data group is simply a group of related elements, such as a set of IP addresses for AOL clients. When you specify a data group along with the class match command or the contains operator, you eliminate the need to list multiple values as arguments in an iRule expression.

How do you create a data group?

Procedure

Open a visualization that has a measure.
Click any white space in the visualization.
Click the Select tool.
Select the columns that you want to include in a custom group.
Ctrl+click one of the columns.
From the menu, click the Custom data group.
Type a name for your custom data group and click OK.

What does iRule mean?

An iRule is a script that you write if you want individual connections to target a pool other than the default pool defined for a virtual server. iRules allow you to more directly specify the destinations to which you want traffic to be directed.

What is F5 DevCentral?

DevCentral is your personalized lens into F5’s community of coders. It’s where you can get into the guts of F5 technologies like iRules, iControl, and iApps. You’ll find code, configs, and information on what’s new. Any F5 technical know-how you’re looking for, you’ll find here.

What is f5 Data Group?

What language is F5 iRule?

Tool Command Language (Tcl) programming
The syntax that you use to write iRules is based on the Tool Command Language (Tcl) programming standard. Thus, you can use many of the standard Tcl commands, plus a robust set of extensions that Local Traffic Manager provides to help you further increase load balancing efficiency.

How are data groups and irules used in F5?

I often implement large list of IP and URL whitelisting/HTTP header based controls on F5 using iRules and Data Groups. What I found is “Data Groups” are one of the easiest way to handle a large number of matching keys and values! As per F5 official documents – data group is the simplest way to maintain a list of permanently matched keys and values.

What are the different types of data groups?

Where can I find complete information on irules syntax?

Important: For complete and detailed information on iRules syntax, see the F5 Networks DevCentral web site, http://devcentral.f5.com. Note that iRules must conform to standard Tcl grammar rules; therefore, for more information on Tcl syntax, see http://tmml.sourceforge.net/doc/tcl/index.html.

Where are data groups stored in local traffic manager?

For this reason, Local Traffic Manager offers you the ability to store your data groups externally, that is, outside of the bigip.conf file file. You have the option to store data groups in another location on the BIG-IP system, that is, outside of the bigip.conf file. Such data groups are called external data groups.