Hi,
Short answer: probably not.
Long answer: you can, because it's all based on rrdtool. Observium itself is not actually tampering directly with the
RRD
files.
So, first of all:
AFAIK this is NOT an officially supported solution.
Your config.php file can be tweaked with the variable
$config['rrd']['rra']
For defaults, have a look at includes/defaults.inc.php (search for
$config['rrd'])
Note that even if you change the RRA definition, it will only apply to newly created
RRD
files.
You may try converting your RRD files with rrdtool if you want to backport previous data.
Else, simply deleting the
RRD
files will force Observium to recreate the files with the new RRA definition.
I can confirm this actually works well, given you understand
RRD
files and what the consequences of those changes are. YMMV.
Reminder: the solution above may break things. Make sure you understand what you do.
HTH,
Ahmed.