Nagios Support Forum

So installed Nagios using the Fedora quickstart guide. Preflight check OK. But when I try to log in I get a 403 permission denied error. I looked at answers to the problem other people posted, but the answers all revolved around adding an index.html file to the Apache/httpd folder and I already have one in there. I only get the message when I have the correct username/password, getting it wrong gives me the prompt 'authentication failed, would you like to try again y/n?'

I'm running the webserver on an EC2 instance (T1 micro) and using the Amazon-linux that comes with it. My understanding is that Amazon-linux is most like CentOS.

Let's check a few things.

>grep -i 'nag' /etc/group

nagios501:nagios
nagcmd502:nagios,apache

>ls -lv /usr/local/nagios/sbin

-rwxrwxr-x 1 nagios nagios 244832 Sep 5 19:24 avail.cgi
-rwxrwxr-x 1 nagios nagios 239352 Sep 5 19:24 cmd.cgi
-rwxrwxr-x 1 nagios nagios 211992 Sep 5 19:24 config.cgi
-rwxrwxr-x 1 nagios nagios 252992 Sep 5 19:24 extinfo.cgi
-rwxrwxr-x 1 nagios nagios 208152 Sep 5 19:24 histogram.cgi
-rwxrwxr-x 1 nagios nagios 187464 Sep 5 19:24 history.cgi
-rwxrwxr-x 1 nagios nagios 183344 Sep 5 19:24 notifications.cgi
-rwxrwxr-x 1 nagios nagios 179216 Sep 5 19:24 outages.cgi
-rwxrwxr-x 1 nagios nagios 179728 Sep 5 19:24 showlog.cgi
-rwxrwxr-x 1 nagios nagios 244992 Sep 5 19:24 status.cgi
-rwxrwxr-x 1 nagios nagios 204128 Sep 5 19:24 statusmap.cgi
-rwxrwxr-x 1 nagios nagios 199776 Sep 5 19:24 statuswml.cgi
-rwxrwxr-x 1 nagios nagios 183376 Sep 5 19:24 statuswrl.cgi
-rwxrwxr-x 1 nagios nagios 204480 Sep 5 19:24 summary.cgi
-rwxrwxr-x 1 nagios nagios 195688 Sep 5 19:24 tac.cgi
-rwxrwxr-x 1 nagios nagios 212256 Sep 5 19:24 trends.cgi

>ls -lv /usr/local/nagios/share

-rw-rw-r-- 1 nagios nagios 576 Sep 5 19:24 config.inc.php
drwxrwxr-x 2 nagios nagios 4096 Sep 5 19:24 contexthelp
drwxrwxr-x 3 nagios nagios 4096 Sep 5 19:24 docs
drwxrwxr-x 3 nagios nagios 4096 Sep 5 19:24 images
drwxrwxr-x 2 nagios nagios 4096 Sep 5 19:24 includes
-rw-rw-r-- 1 nagios nagios 1440 Sep 5 19:24 index.php
drwxr-xr-x 4 root root 4096 Sep 5 19:37 locale
-rw-rw-r-- 1 nagios nagios 3440 Sep 5 19:24 main.php
drwxrwxr-x 2 nagios nagios 4096 Sep 5 19:24 media
-rw-rw-r-- 1 nagios nagios 26 Sep 5 19:24 robots.txt
-rw-rw-r-- 1 nagios nagios 5714 Sep 5 19:24 side.php
drwxrwxr-x 2 nagios nagios 4096 Sep 5 19:24 ssi
drwxrwxr-x 2 nagios nagios 4096 Sep 5 19:24 stylesheets

>tail -n 20 /usr/local/nagios/var/nagios.log

[1378824422] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378824422] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 14:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378825782] Auto-save of retention data completed successfully.
[1378828022] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378828022] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 15:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378829382] Auto-save of retention data completed successfully.
[1378831622] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378831622] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 16:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378832982] Auto-save of retention data completed successfully.
[1378835222] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378835222] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 17:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378836582] Auto-save of retention data completed successfully.
[1378838822] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378838822] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 18:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378840182] Auto-save of retention data completed successfully.
[1378842422] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378842422] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 19:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
[1378843782] Auto-save of retention data completed successfully.
[1378846022] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378846022] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 20:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...

>tail -n 20 /var/log/messages

Sep 10 14:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 14:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 15:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 15:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 15:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 15:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 16:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 16:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 16:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 16:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 17:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 17:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 17:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 17:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 18:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 18:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 18:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 18:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 19:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 19:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 19:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 19:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 20:09:42 ip-10-224-12-200 nagios: Auto-save of retention data completed successfully.
Sep 10 20:47:02 ip-10-224-12-200 nagios: SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
Sep 10 20:47:02 ip-10-224-12-200 nagios: Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 20:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...
Sep 10 20:50:06 ip-10-224-12-200 auditd[1049]: Audit daemon rotating log files

#not sure if it's relevant, but I had to do the last command as the root user.

corrinmana wrote:>grep -i 'nag' /etc/group

nagios501:nagios
nagcmd502:nagios,apache

Add apache to the nagios group: Restart nagios:
service nagios restart

corrinmana wrote:[1378824422] SERVICE NOTIFICATION: nagiosadmin;localhost;Swap Usage;CRITICAL;notify-service-by-email;SWAP CRITICAL - 100% free (0 MB out of 0 MB)
[1378824422] Warning: Attempting to execute the command "/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: Swap Usage\nHost: localhost\nAddress: 127.0.0.1\nState: CRITICAL\n\nDate/Time: Tue Sept 10 14:47:02 UTC 2013\n\nAdditional Info:\n\nSWAP CRITICAL - 100% free (0 MB out of 0 MB)\n" | /bin/mail -s "** PROBLEM Service Alert: localhost/Swap Usage is CRITICAL **" [email protected]" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists...

Does /bin/mail exist? How about /usr/bin/printf?

printf exists, but mail does not.

Should note that adding Apche to the nagios group and restarting did not solve the issue.

Try to log in again, then run the following command and show the output:

tail: cannot open `30' for reading: No such file or directory
==> /var/log/httpd/error_log <==
[Tue Sep 10 22:50:17 2013] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Tue Sep 10 22:50:17 2013] [notice] Digest: generating secret for digest authentication ...
[Tue Sep 10 22:50:17 2013] [notice] Digest: done
[Tue Sep 10 22:50:17 2013] [notice] Apache/2.2.25 (Unix) DAV/2 configured -- resuming normal operations
[Tue Sep 10 22:50:49 2013] [error] [client 127.0.0.1] Directory index forbidden by Options directive: /usr/local/nagios/share/
[Wed Sep 11 14:45:12 2013] [error] [client 66.249.74.81] File does not exist: /var/www/html/robots.txt
[Thu Sep 12 10:24:03 2013] [error] [client 192.74.250.99] File does not exist: /var/www/html/manager
[Thu Sep 12 17:58:23 2013] [error] [client 94.102.48.168] File does not exist: /var/www/html/headers
[Thu Sep 12 21:29:13 2013] [error] [client 192.96.204.42] File does not exist: /var/www/html/robots.txt
[Thu Sep 12 23:30:45 2013] [error] [client 127.0.0.1] Directory index forbidden by Options directive: /usr/local/nagios/share/

Do you have php installed in your system?

No