No connection on TCP or UDP X port

[oziris]

Hi,
i have nagios core 4.4.6 and few days ago i have upgraded centos (yum update) and from moment i have upgraded server, some scripts are not working on random hosts

i have error on gui:
"No connection on TCP/UDP ports"

If i run script from server cli, script works normally.

i don't know what has changed after update.

Can someone help me?

Regards,
Matevz

[pbroste]

Hello Matevz;

Thanks for reaching out, I understand that after the yum update on your Centos we are receiving error messages.

The suggestion to take a look at your Centos environment to make sure that SELinux did not get updated to an enabled state and check your firewall to verify that is okay as well.

Code: Select all

sed -i 's/SELINUX=enforcing/SELINUX=permissive/g' /etc/selinux/config
setenforce 0

iptables --list

firewall-cmd --list-all

Sounds like you are receiving messages while viewing through the Nagios Core web console, and would suggest taking a look at the web browser Development tools > Network tab and check to see if an event is logged during rendering. Also check to see if there are any messages in your /usr/local/nagios/var/nagios.log and/or system logs in /var/log/ (>tail -F /...../..log).

Thanks,
Perry

[oziris]

Hi Perry

Tnx for the info.

I have already checked the firewall and selinux and both are disabled and iptables list is empty.

There are no errors in network tab and the only thing i can see in logs is when i force check " EXTERNAL COMMAND: SCHEDULE_FORCED_SVC_CHECK;...... "

it is like that they are not running automatically, even when i run it manualy in console, console show that it is ok, but on the web there is still error and i dont get notification for recovery.

Regards,
Matevz

[pbroste]

Hello Matevz;

Thanks for following up, could you check to see if permissions and/or ownership changed during the update.

Code: Select all

$ ls -l /usr/local/nagios/
total 12
drwxr-xr-x.  2 nagios nagios   72 May 13 10:34 bin
drwxrwxr-x.  3 nagios nagios  112 May 21 10:25 etc
drwxrwxr-x.  2 nagios nagios 4096 Jun 24 13:27 libexec
drwxrwxr-x.  2 nagios nagios 4096 May 12 14:49 sbin
drwxrwxr-x. 15 nagios nagios 4096 May 12 16:00 share
drwxr-xr-x.  5 nagios nagios  139 Jul  2 13:10 var

The owner of "libexec" directory should be nagios:nagios and the permissions should be set to 775 (drwxrwxr-x). If this is not what you have, run in terminal:

Code: Select all

chmod 775 /usr/local/nagios/libexec
chown nagios:nagios /usr/local/nagios/libexec

Thanks for double checking things,
Perry

[oziris]

Hi,
Tnx for update,
When i do
ls -l /usr/local/nagios/ i only have /var in the folder. I cant locate other files in my nagios setup.

Regards,
Matevz