nagios 4.0.5 website cannot write to file

[averlon]

Hi,
I got the message on my nagios website:

Code: Select all

Could not open command file '/usr/local/nagios/var/rw/nagios.cmd' for update!

This happens by chance. Sometimes, sometimes not.

What could be the reason for this.
Was the same behaviour in 4.0.4.

I had to reinstall my complete server (due to other reasons).
Ubuntu 13.10
nagios 4.0.4
mysql
ndoutils

[slansing]

What is the output of:

Code: Select all

ls -la /usr/local/nagios/var/rw/nagios.cmd

How often does this happen? Is it after restarts of nagios?

[averlon]

Hi,

Code: Select all

prw-rw---- 1 nagios nagios 0 Apr 14 07:27 /usr/local/nagios/var/rw/nagios.cmd

No, it is not only after restart of nagios.

But it is only a home-installation - just to get knowledge on nagios. 3 Servers to monitor. 3 Clients, Printers, Switches, ...

Nagios Server is a XEN Guest. It probably is a network issue or some performance issue on the XEN/Ubuntu Guest.
Difficult to analyse and difficult to say.

[scottwilkerson]

Is the user apache runs under part of the nagios group?

This is one reason I could see it happening, otherwise it is usually just if the nagios process isn't currently running.

[averlon]

Hi,
yes, www-data is part of nagios group.

[lmiltchev]

Run the following commands and show us the output:

Code: Select all

ls -lad /usr/local/nagios/var/rw/
ps -ef | grep nagios
grep nag /etc/group