Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd’ for update!

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While installing the Nagios 4.0.2 from tarball I got this issue Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd’ for update!. The problem was clearly stating about permission issue.Hence we have to only modify the permission and restart the nagios service.
The problem was occurring when I was clicking on Re-schedule the next check of this service actually it is related to commands which can be run from Nagios Dashboard.

nagios

Do the following steps:


chmod 666 /usr/local/nagios/var/rw/nagios.cmd
chown nagios.nagcmd /usr/local/nagios/var/rw 
chmod u+rwx /usr/local/nagios/var/rw
chmod g+rwx /usr/local/nagios/var/rw  
chmod g+s /usr/local/nagios/var/rw

Now restart the nagios

/etc/init.d/nagios restart

After resolving the issue,below given is screenshot reference

nagios

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