Is there a way to change device graphs to 12-hour time?

jeffrey · 25 February 2019 16:58

Title. Currently the graphs only show in 24-hour time. Is there a setting I can change so the graphs can show in 24-hour time?

Kevin_Krumm · 25 February 2019 22:09

I have never seen a setting for that… but you can take a look in here https://docs.librenms.org/Support/Configuration/

jeffrey · 26 February 2019 05:29

I had a look through it and did not find any setting that would change the graphs to 12hr time. I guess it is not something that is implemented?

I tried changing these settings:

$config[‘alert_graph_date_format’] = ‘%m-%d-%Y %h:%i’
$config[‘dateformat’][‘compact’] = ‘m-d-Y h:i:s’
$config[‘dateformat’][‘byminute’] = ‘m-d-Y h:i’
$config[‘dateformat’][‘time’] = ‘h:i:s’
$config[‘dateformat’][‘mysql’][‘compact’] = ‘%m-%d-%Y %h:%i:%s’
$config[‘dateformat’][‘mysql’][‘date’] = ‘%m-%d-%Y’
$config[‘dateformat’][‘mysql’][‘time’] = ‘%h:%i:%s’

And restarted and it didn’t seem to change anything.

Chas · 26 February 2019 11:16

Having a 12 hour clock on a graph would confuse me

I think you would have to change the way RRD is drawing https://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html

%I
The hour as a decimal number using a 12-hour clock (range 01 to 12).

Someone may know if you can do this without breaking your setup,

I had a quick look and it may be possible to use this setting in combination as a config variable using rrdgraph_def_text … or … rrd_opts_array

jeffrey · 26 February 2019 14:56

I would be adding that to here?

github.com

librenms/librenms/blob/a0e33a6703e5dbea9a024d03b990481d1b00c70b/html/includes/collectd/config.php

<?php
/**
 * Configuration file for Collectd graph browser
 */

if (isset($config['rrdgraph_def_text'])) {
    $config['rrdgraph_def_text'] = str_replace('  ', ' ', $config['rrdgraph_def_text']);
    $config['rrd_opts_array']    = explode(' ', trim($config['rrdgraph_def_text']));
}

// Array of paths when collectd's rrdtool plugin writes RRDs
$config['datadirs'] = array($config['collectd_dir']);
// Width of graph to be generated by rrdgraph
if (isset($_GET['width'])) {
    $config['rrd_width'] = $_GET['width'];
} else {
    $config['rrd_width'] = 270;
}

// Height of graph to be generated by rrdgraph

This file has been truncated. show original

This line?

$config[‘rrdgraph_def_text’] = ‘PRINT:vname:%I:%M:%s%p’

Chas · 26 February 2019 15:07

No config variables go in config.php and is update proof.

If you modify files that librenms uses you can run into problems down the line, as auto-updating will stop working for that modified file.

jeffrey · 26 February 2019 16:51

Alright. I might back out of this idea then if it will just cause problems.

Just to be clear, you’re saying I can’t edit /opt/librenms/config.php with config variables?

Chas · 26 February 2019 18:03

you can modify /opt/librenms/config.php

but if you modify that file you suggested /html/includes/collectd/config.php it may conflict in future updates

jeffrey · 26 February 2019 18:10

Thank you for clarifying and the support.