No unpolled devices, yet get "15 minute" warning

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1

I’m tearing my hair out - I have no unpolled devices, yet I can’t get rid of the “Unpolled devices” message. My validate is perfectly fine and up to date, I use rrdcached and my pollers appear to be polling correctly.

unpolled
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I am at a loss as what else to include that wouldn’t waste your time - my validate is fine, I use rrdcached, and my device poll times seem good.

Thank you for reading my post.

2 
MariaDB [librenms]> SELECT COUNT(*) FROM `devices` WHERE `last_polled` <= DATE_ADD(NOW(), INTERVAL - 15 minute) AND `ignore` = 0 AND `disabled` = 0 AND status = 1;
+----------+
| COUNT(*) |
+----------+
|        0 |
+----------+
1 row in set (0.00 sec)

Well, that’s not it, even 5 minutes is in the single digits. Any next step troubleshooting hints greatly appreciated, thank you.

3 
            $warn_sec = Config::get('rrd.step', 300) * 3;
            if (Device::isUp()->where('last_polled', '<=', Carbon::now()->subSeconds($warn_sec))->exists()) {
                $warn_min = $warn_sec / 60; 
                Toastr::warning('It appears as though you have some devices that haven\'t completed polling within the last ' . $warn_min . ' minutes, you may want to check that out :)', 'Devices unpolled');
            }

That appears to be right, I’m not sure why it isn’t working.

4

How long have you been experiencing this?

Sounds like somewhere the time isn’t correct, worth checking time across mysql / php / system, try run this in sql e.g

SELECT NOW();

Can you show the validate.php output too

5

Can only be apache php - that’s why SQL was still correct. That indeed were a stupid mistake, thanks much Chas.

For those who arrive here by means of Google, make sure your timezone is right in your ini files. Ubuntu, for instance:
/etc/php/7.2/apache2/php.ini
/etc/php/7.2/cli/php.ini

A php --ini will giv you a good idea where that file may be, change cli to apache2 and you can check there or for nginx.

Run ‘date’ from command line - should be right, if it isn’t, google it for your distro.

mysql can be checked as Chas says, but I think you have to try pretty hard to screw that up by changing my.sql or something.

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