Nagios Support Forum

Hi, I have installed sendmail and did the configuration with my SMTP server but email notification is not working. I am able to send emails command line with both root and nagios users. I checked the configuraion in commands.cfg file and it seems ok to me. Below logs from Nagios.log file and mail.log file.

Nagios.log -
[1458863451] HOST NOTIFICATION: nagiosadmin;Windows S1;CUSTOM (UP);notify-host-by-email;PING OK - Packet loss = 0%, RTA = 0.61 ms;Nagios Admin;Sample Custom
[1458863470] SERVICE NOTIFICATION: nagiosadmin;Windows S1;C:\ Drive Space;CRITICAL;notify-service-by-email;c:\ - total: 63.66 Gb - used: 61.75 Gb (97%) - free 1.90 Gb (3%)
[1458863478] HOST ALERT: NWPrinter1;DOWN;SOFT;7;PING CRITICAL - Packet loss = 100%
[1458863481] wproc: Core Worker 1205: job 22 (pid=5746) timed out. Killing it
[1458863481] wproc: NOTIFY job 22 from worker Core Worker 1205 timed out after 30.01s
[1458863481] wproc: host=Windows 8.1 Pro; service=(none); contact=nagiosadmin
[1458863481] wproc: early_timeout=1; exited_ok=0; wait_status=0; error_code=62;
[1458863481] Warning: Notifying contact 'nagiosadmin' of host 'Windows S1' by command '/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: CUSTOM\nHost: Windows S1\nState: UP\nAddress: 10.221.55.15\nInfo: PING OK - Packet loss = 0%, RTA = 0.61 ms\n\nDate/Time: Thu Mar 24 16:50:51 PDT 2016\n" | /usr/sbin/sendmail -s 10.221.176.3:2525 -t [email protected] -f [email protected] -l /var/log/sendemail -u "** CUSTOM Host Alert: Windows S1 is UP **" -m "***** Nagios *****\n\nNotification Type: CUSTOM\nHost: Windows S1\nState: UP\nAddress: 10.221.55.15\nInfo: PING OK - Packet loss = 0%, RTA = 0.61 ms\n\nDate/Time: Thu Mar 24 16:50:51 PDT 2016\n"' timed out after 0.00 seconds
[1458863481] wproc: Core Worker 1205: job 22 (pid=5746): Dormant child reaped
[1458863482] SERVICE NOTIFICATION: nagiosadmin;Windows 8.1 Pro;Printer1;UNKNOWN;notify-service-by-email;Unknown command(s): check_pqueue
[1458863492] HOST ALERT: NWPrinter;DOWN;SOFT;8;PING CRITICAL - Packet loss = 100%
[1458863494] SERVICE NOTIFICATION: nagiosadmin;Windows 8.1 Pro;testps1;WARNING;notify-service-by-email;Test
[1458863500] wproc: Core Worker 1204: job 23 (pid=5811) timed out. Killing it
[1458863500] wproc: NOTIFY job 23 from worker Core Worker 1204 timed out after 30.01s
[1458863500] wproc: host=Windows 8.1 Pro; service=C:\ Drive Space; contact=nagiosadmin
[1458863500] wproc: early_timeout=1; exited_ok=0; wait_status=0; error_code=62;
[1458863500] Warning: Notifying contact 'nagiosadmin' of service 'C:\ Drive Space' on host 'Windows S1' by command '/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: C:\ Drive Space\nHost: windows S1\nAddress: 10.221.55.15\nState: CRITICAL\n\nDate/Time: Thu Mar 24 16:51:10 PDT 2016\n\nAdditional Info:\n\nc:\ - total: 63.66 Gb - used: 61.75 Gb (97%) - free 1.90 Gb (3%)" | /usr/sbin/sendmail -s 10.221.176.3:2525 -t [email protected] -f [email protected] -l /var/log/sendemail -u "** PROBLEM Service Alert: windows S1/C:\ Drive Space is CRITICAL **" -m "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: C:\ Drive Space\nHost: windows S1\nAddress: 10.211.55.15\nState: CRITICAL\n\nDate/Time: Thu Mar 24 16:51:10 PDT 2016\n\nAdditional Info:\n\nc:\ - total: 63.66 Gb - used: 61.75 Gb (97%) - free 1.90 Gb (3%)"' timed out after 0.00 seconds
[1458863500] wproc: Core Worker 1204: job 23 (pid=5811): Dormant child reaped

Mail.log -

Mar 24 16:43:41 ubuntu sm-mta[3467]: starting daemon (8.14.4): SMTP+queueing@00:10:00
Mar 24 16:43:43 ubuntu sm-msp-queue[2530]: unable to qualify my own domain name (ubuntu) -- using short name
Mar 24 16:43:43 ubuntu sm-msp-queue[2530]: dangerous permissions=42775 on queue directory /var/spool/mqueue-client/
Mar 24 16:44:09 ubuntu sendmail[4226]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:44:27 ubuntu sendmail[4335]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:45:21 ubuntu sendmail[4526]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:45:27 ubuntu sendmail[4559]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:46:02 ubuntu sendmail[4753]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:47:14 ubuntu sendmail[5003]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:47:25 ubuntu sendmail[5044]: My unqualified host name (ubuntu) unknown; sleeping for retry
Mar 24 16:50:11 ubuntu sendmail[5612]: My unqualified host name (ubuntu) unknow$
Mar 24 16:50:51 ubuntu sendmail[5748]: My unqualified host name (ubuntu) unknow$

Could you please help and let me know solution of it.

Regards,
Arvind

I think you should start by setting a FQDN for your host. mail.log complains about Ubuntu is an unqualified host name

@rhassing is right, set a FQDN and let us know what your maillog is showing after doing so. The Nagios portion is firing the notification properly.

Thanks for the help !
I did the changes, as suggested, and now I am getting permission denied error. Following Nagios log and mail log.

Nagios log -
[1458920200] EXTERNAL COMMAND: SEND_CUSTOM_SVC_NOTIFICATION;Windows S1;C:\ Drive Space;0;Nagios Admin;Test Notificatio$
[1458920200] SERVICE NOTIFICATION: nagiosadmin;Windows S1;C:\ Drive Space;CUSTOM (CRITICAL);notify-service-by-email;c:$
[1458920200] wproc: NOTIFY job 5 from worker Core Worker 1260 is a non-check helper but exited with return code 71
[1458920200] wproc: host=Windows S1; service=C:\ Drive Space; contact=nagiosadmin
[1458920200] wproc: early_timeout=0; exited_ok=1; wait_status=18176; error_code=0;
[1458920200] wproc: stdout line 01: WARNING: RunAsUser for MSP ignored, check group ids (egid=1001, want=127)
[1458920200] wproc: stdout line 02: can not write to queue directory /var/spool/mqueue-client/ (RunAsGid=1001, required=1$

Mail log -
Mar 25 08:34:30 arvind sm-mta[1556]: gethostbyaddr(10.221.55.10) failed: 2
Mar 25 08:34:30 arvind sm-mta[1576]: starting daemon (8.14.4): SMTP+queueing@00:10:00
Mar 25 08:34:32 arvind sm-msp-queue[2609]: dangerous permissions=42775 on queue directory /var/spool/mqueue-client/
Mar 25 08:36:40 arvind sendmail[4730]: NOQUEUE: SYSERR(nagios): can not write to queue directory /var/spool/mqueue-client/$
Mar 25 08:36:40 arvind sendmail[4730]: dangerous permissions=42775 on queue directory /var/spool/mqueue-client/

I updated the permissions as well, for the /var/spool/mqueue-client/ directory, tried 775 and 770, but no luck. Also, added nagios user to smmsp group, even that did not work. Will check it further and update you all.

Regards,
Arvind

Are you running SELinux on this machine? Can you run the following commands, and post the output?

No, SELinus is not installed on this machine. Output of the commands, as asked.

getenforce
The program 'getenforce' is currently not installed. You can install it by typing:
sudo apt-get install selinux-utils

ls -l /var/spool/mqueue-client/
total 0

ls -l /var/spool/
total 36
drwxr-xr-x 2 root root 4096 Apr 21 2015 anacron
drwxr-xr-x 3 root root 4096 Feb 18 2015 cron
drwx--x--- 3 root lp 4096 Feb 18 2015 cups
drwxr-xr-x 3 root root 4096 Feb 18 2015 libreoffice
drwxr-xr-x 2 root root 4096 Mar 29 2014 lintian
lrwxrwxrwx 1 root root 7 Apr 21 2015 mail -> ../mail
drwxr-sr-x 2 smmta smmsp 4096 Mar 18 16:20 mqueue
drwxrws--- 2 smmsp smmsp 4096 Mar 18 15:32 mqueue-client
drwxr-xr-x 2 root root 4096 Apr 11 2014 plymouth
drwx------ 2 syslog adm 4096 Dec 4 2013 rsyslog

What was the error in the mail log after you changed the permissions on the mqueue-client directory?

Did you follow a guide to set this up? If so, can you please link us to said guide?