Aggregate Templates are a special form of a Graph Template. They allow you to easily create Graphs that combine data from multiple common Graphs from multiple Devices, and allow you to easily manage the resulting Aggregate Graphs to add and remove elements from other common Graphs.
To create Aggregate Graphs that are managed through a Template, you first
must create the Aggregate Template. Then from the Cacti
Graphs page, you can select the Graphs that you want used as part of
the Aggregate. You then select
Create Aggregate from Template from the
Cacti Actions drop-down.
Once you have created your Aggregate Graphs, they behave like any other Cacti Graph. They can be a part of a Tree, zoomed, etc. They have an added bonus - you can add and remove Graphs from aggregate in a very controlled way, reducing the effort to maintain them during their life-cycle.
If you wish to change settings for Graphs managed by the Aggregate Template, simply make the changes in the Aggregate Template, and they will cascade to Aggregate Graphs managed by the Template.
The images below shows an Aggregate Template for Traffic.
When you edit the Aggregate Template, you are presented with an interface that allows you to define the Graph Canvas as well as it's formatting. You should experiment until you find the mechanism that works best to suite your needs.
Prefix setting allows you to provide a pattern to
be applied to the Aggregate Graph legend items. Any
references can be used in the
Prefix section in order to uniquely identify
the Graph Item.
There are several
Graph Types transformations that deal with how
STACK items are handled in the resulting Aggeregate Graph, they include:
STACKSwill be unchanged.
LINEXwill be converted to
Totaling setting has multiple values. They include:
Total Type - Will create groupings of common elements on the Graph,
and reset stacking rules when a change in the common element occurs. The
Total Type, you are provided an option to additionally prefix your
legends using the
Prefix for GPRINT Totals with a text value. The default
works in most cases.
Reorder Type will re-order the Data Sources within their respective
grouping on the Graph so that they are ordered in a common way, in alphabetic
order. The options include:
Graph Template Items section allows you to either Skip or Total (aka include)
the Graph Items in the resulting Aggregate Graphs. When you think about
how a resulting Aggregate graph will look, there are some elements that simply
will not result in a good looking Graph. In those cases you will
want to remove them from the resulting Aggregate Graphs.
Color Template option allows you to use differing Color rotations when
displaying elements on the resulting Aggregate Graphs. Color Templates
can be added and removed from the Color Templates menu pick
Console > Templates.
The several sections allow you to override any of the common Graph Template elements from the resulting Aggregate Graph. We will not explain those options here, only let you know that you can override them in your resulting Aggregate Graph.
There are several combinations of options that you can use when working with an Aggregate Template. Some of these options will results in horrible and unexpected outcomes, so you will have to experiment until you come up with a desirable Aggregate Template.