Nagios Support Forum

Path to email:
/usr/bin/mail

Path to printf:
/usr/bin/printf

Not sure if that's how its supposed to be for the above. I just ran the commands specified in your last post.

Also could not locate a maillog using the command you specified. Checked the path provided. There is no maillog inside /var/bin

Do you have a MTA installed and running on the server such as postfix or sendmail?

Following commands posted in your last post:
path to emai
/usr/bin/mail

path to printf
/usr/bin/printf

could not locate a maillog by following the path into /var/bin
command posted did not run saying no such file or directory
so no maillog definitely along that path

Sorry about the last post. I send out the same information twice.
About MTA being installed, I was not really able to verifiy if it is there or not. Is there any way to verify if MTA is installed or not? I tried running a few commands to check but unfortunately nothing went through. It may also be that RancherOS does not have MTA installed since it is a very thin OS.
What would your recommendation be in that case?

Sorry, did you receive my reply? It does not show up here

If you have the locate command available you can do a 'locate sendmail' or 'locate postfix' to see if you have the configuration files for a MTA. Config files usually look like sendmail.cf or main.cf. As far as configuring these, you'll want to check with the OS or package documentation.

Yes, I did find a postfix folder which has a main.cf file in it.

The error I see now is as follows:

[1570445859] wproc: NOTIFY job 52 from worker Core Worker 41 timed out after 31.01s
[1570445859] wproc: host=lsbxcpch008.icbc.net; service=(none); contact=madi
[1570445859] wproc: early_timeout=1; exited_ok=0; wait_status=0; error_code=62;
[1570445859] wproc: stderr line 01: postdrop: warning: mail_queue_enter: create file maildrop/179759.1154: Permission denied
[1570445859] wproc: stderr line 02: postdrop: warning: mail_queue_enter: create file maildrop/179930.1154: Permission denied
[1570445859] wproc: stderr line 03: postdrop: warning: mail_queue_enter: create file maildrop/180106.1154: Permission denied
[1570445859] Warning: Notifying contact 'madi' of host 'lsbxcpch008.icbc.net' by command '/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\nHost: lsbxcpch008.icbc.net\nState: DOWN\nAddress: 10.164.5.204\nInfo: /bin/ping -n -U -W 30 -c 5 10.164.5.204\n\nDate/Time: Mon Oct 7 10:57:08 UTC 2019\n" | /usr/bin/mail -s "** PROBLEM Host Alert: lsbxcpch008.icbc.net is DOWN **" [email protected]' timed out after 0.00 seconds

This is in the nagios.log file. This is just one instance. The same thing keeps appearing for all servers I am trying to monitor for all contacts I have added.

Can you help me understand what this means ? And how to resolve?

Is there a postfix service running?

This is what i get when I try to start postfix:

root@nagios-87fbfd68c-pgvb5:/etc# service postfix status
* postfix is not running
root@nagios-87fbfd68c-pgvb5:/etc# postfix start
postfix: Postfix is running with backwards-compatible default settings
postfix: See http://www.postfix.org/COMPATIBILITY_README.html for details
postfix: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload"
postfix/postfix-script: fatal: the Postfix mail system is already running


When I check the status, it says it's not running. But as I try to start it up, that's what I see.
Is that what is causing the issue?

madhurima12 wrote:This is what i get when I try to start postfix:

root@nagios-87fbfd68c-pgvb5:/etc# service postfix status
* postfix is not running
root@nagios-87fbfd68c-pgvb5:/etc# postfix start
postfix: Postfix is running with backwards-compatible default settings
postfix: See http://www.postfix.org/COMPATIBILITY_README.html for details
postfix: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload"
postfix/postfix-script: fatal: the Postfix mail system is already running


When I check the status, it says it's not running. But as I try to start it up, that's what I see.
Is that what is causing the issue?

Yep.. somehow you are going to need to get it running if you want it to send mail. This is likely a result of installing on a system that cannot run services