After setup RamDisk, performance graph no data?!

[xpertech]

After refer the document to setup RamDisk, the performance graph can not display data?!

https://assets.nagios.com/downloads/nag ... giosXI.pdf

[tgriep]

First, check to see if the npcd and the cron jobs are running on the server.
To to that, run the following command as root.

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ps -ef |grep nagios

Search the output and you should see there processes running.

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nagios   16461 16448  0 08:42 ?        00:00:00 /usr/bin/php -q /usr/local/nagiosxi/cron/perfdataproc.php
nagios   16448 16436  0 08:42 ?        00:00:00 /bin/sh -c /usr/bin/php -q /usr/local/nagiosxi/cron/perfdataproc.php >> /usr/local/nagiosxi/var/perfdataproc.log 2>&1
nagios    2020     1  0 Aug30 ?        00:02:04 /usr/local/nagios/bin/npcd -d -f /usr/local/nagios/etc/pnp/npcd.cfg

If you do not see then, run the following as root to restart the processes

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service npcd restart
service crond restart

Wait 10 to 15 minutes for the data to populate.

Another thing to check, it the RAMDisk mounted?
run this as root

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df -h

You should see this

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tmpfs                 100M  2.4M   98M   3% /var/nagiosramdisk

If not, reboot the server to see if it gets mounted.

[xpertech]

What happen if RamDisk full?

[xpertech]

after refer to your reply and restart service, still no performance graph?
service npcd restart
service crond restar

the RamDisk had been mounted,

tmpfs 1000M 1000M 0 100% /var/nagiosramdisk

[scottwilkerson]

I would guess that one of the steps in the ramdisk document were missed lich changing the commands on page 12, but lets check to see where the ram disk is filling by showing the output of these commands

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ll /var/nagiosramdisk
ll /var/nagiosramdisk/spool/perfdata/|wc -l
ll /var/nagiosramdisk/spool/xidpe/|wc -l
ll /var/nagiosramdisk/spool/checkresults/|wc -l

[xpertech]

the output of those commands ...

[scottwilkerson]

Did you change this in the /usr/local/nagiosxi/html/config.inc.php per page 10 of the document?

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$cfg['xidpe_dir'] = '/var/nagiosramdisk/spool/xidpe/';

[xpertech]

didn't change /usr/local/nagiosxi/html/config.inc.php,

the code you offered, should we do anything?
$cfg['xidpe_dir'] = '/var/nagiosramdisk/spool/xidpe/';

[scottwilkerson]

Yes, see page 10 of this document for the changes that should be made
https://assets.nagios.com/downloads/nag ... giosXI.pdf

I would also review the whole document to verify that all the changes were applied.

[xpertech]

another thing, what would happen if the RamDisk full? will it reset automatically? or the application on it will hang?