Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.

learn more… | top users | synonyms

10
votes
9answers
27k views

NRPE unable to read output, but why?

I have this problem with NRPE, all the stuff I've found so far on the net seems to point me at things I've already tried. # /usr/local/nagios/plugins/check_nrpe -H nrpeclient gives NRPE v2.12 as ...
13
votes
9answers
7k views

There is any monitoring hosted solution? [closed]

I know Zabbix and Nagios, but I don't know any company that host those services for others to use. I would like to find a solution that monitored at least some of my public URLs (if they are ...
2
votes
4answers
378 views

Nagios check whether at least one out of two services is OK

I have two following passive services: ServiceA, ServiceB on one machine. I would like to have a sittuation when the OK state is satisfied by following conditions: ServiceA is OK or ServiceB is OK ...
17
votes
4answers
2k views

Monitoring production server

Hey all, We have 3 dedicated server, splitted in several VPS using openVZ. We're using munin to monitor the VPS with the production sites, and monit on some one of the VPS to make sure it restarts the ...
1
vote
1answer
925 views

nagios - Web interface: authentication through kerberos OK, what about authorization on cgi.cfg?

I have successfully installed nagios, and it provides authentication through apache2 which contacts a kerberos authentication server to authenticate users. Now, users are authenticated, but they ...
4
votes
3answers
7k views

Monitor ESXi hosts with Nagios

Does anyone recommend any methods for monitoring ESXi 4.1 hosts with Nagios? I have looked into SNMP but it seems to be in a pretty sorry state. Net-SNMP does not seem to be included and there is a ...
6
votes
5answers
1k views

Nagios server best practices?

I run a medium-sized Nagios server. It monitors roughly 40 servers with 180 services currently and is only growing by the day. I migrated from an old Nagios setup that was configured in a very ...
3
votes
3answers
1k views

Nagios plugin to take process snapshot when load is high

We have configured nagios with check_load NRPE plugin to monitor server load. It reports when load is high, but does not have option to take a snapshot top processes ( like top commmand) at that time. ...
3
votes
5answers
6k views

Network port open, but no process attached?

I have a weird situation going on with an open network port. My main question is, why would there not be a program associated with an open TCP port: netstat -ln --program Active Internet connections ...
8
votes
2answers
1k views

Send all outgoing mail to /dev/null

With sendmail, how would you send all outgoing mail to /dev/null or just prevent email from being queued up or sent at all? On a development nagios box I want prevent sending of mail so that ...
6
votes
8answers
11k views

How do I configure Nagios mobile / SMS alerts?

How do I send alerts from Nagios monitoring tool to mobile? Any resources or links or tutorials are fine.
4
votes
1answer
2k views

Configure Nagios To Alert Depending On Host Group That Service Alert Originates From

So my setup: Services are shared between all hosts (CPU/RAM/Disk/Services). Hosts are split into two main groups: "Production" and "Development". We have two contact groups: "Production" and ...
3
votes
3answers
4k views

SELinux prevents Nagios plugins from running on RHEL6

After installing Nagios NRPE & Nagios Plugins, I'm getting the following entry in my rsyslog: May 13 14:01:30 wcmisdlin02 kernel: type=1400 audit(1305309690.482:2334): avc: denied { getattr } ...
2
votes
1answer
301 views

Can ZenOSS integrate Ganglia smoothly?

I like Ganglia for its Gmetric function, and I like its multi-layer capability. But Ganglia does not have healthiness check, alerting and etc. for the server monitor functionality. So it would be ...
0
votes
1answer
176 views

Is it's possible to have SCOM interrogate Nagios to get the status information of hosts?

When I said 'like' in the subject, that was just because the English language requires that syntax! I do not like SCOM! But business requirements are almost forcing me to use this as my main pane of ...
-1
votes
2answers
461 views

Check NRPE APT now working through Nagios

I'm able to monitor hosts' package statuses via terminal; but Nagios web ui gives an error like this: (No output returned from plugin) Here's the command that works properly via terminal: ...
-2
votes
2answers
2k views

How to configure nagios realtime SMS alert

I have configured nagios SMS alert and it takes around one minute to send notification. I want to get SMS notification withing one/two second(s) after system/service failure. I could not find any way ...
27
votes
4answers
18k views

Munin vs Nagios

We're currently using Nagios to monitor about 20 Linux machines (services and functional links). I just find out about Munin and I wonder if this is a Nagios replacement, or it can be used together ...
16
votes
8answers
7k views

Nagios alerts by telephone?

I have a couple of nagios servers that currently alert me via SMS and email, but I'd like to add outgoing calls to that. The ideal solution would have the nagios machines call my cellphone and play an ...
8
votes
6answers
13k views

Nagios graphing solutions vs Munin/Cacti/Ganglia

I've got a nagios server setup for monitoring ~ 30 Windows servers. I want to add some trending charts. I've read that nagios graphing plugins are simple and many people use seperate, standalone ...
9
votes
6answers
1k views

How to monitor Windows host with Nagios?

How do I use Nagios to monitor Windows clients? Are there any alternative solutions available?
3
votes
2answers
1k views

How does an administrator generalize alerting when an event doesn't happen?

Often my users require me to be just as responsible for knowing if an event hasn't happened. I've always had to build custom and brittle solutions with cron'ed shell scripts and lots of date edge ...
13
votes
6answers
943 views

How do you monitor a monitoring server?

So we run Groundworks (with Nagios) on CentOS to monitor our various servers and processes. I have it setup to automatically send emails and SMS texts when things reach a WARNING or CRITICAL state. ...
4
votes
6answers
8k views

Use Nagios to monitor a log file and send log details

I know Nagios can monitor and alert on the content within a log file, but does anyone know of a plug-in, or other tool, that will monitor a log file for a particular string and then send the entire ...
4
votes
1answer
398 views

measuring bandwidth per-user used by ssh server-side connections on linux

I'd like to be able to measure the bandwidth used by each user by their inbound ssh connections, into a linux box. I measure most other traffic using iptables and user-matching, but inbound ssh ...
4
votes
2answers
329 views

Nagios alerts using twitter (with twurl) not firing

We've been using nagios for some time and have recently decided to change how we receive alerts. To this end, we've installed twurl ( https://github.com/marcel/twurl ) and are using it to send alerts. ...
4
votes
1answer
3k views

NAGIOS notification command for service/contactgroup

We have 3 templates for services, low-priority, high-priorty and medium-priorty. Low priority services are attached to the contactgroup low, medium priorty services are attached to the contact group ...
3
votes
3answers
6k views

Nagios alert by email for WARNING and pager for CRITICAL [duplicate]

I want to set Nagios up to issue warnings (e.g. mildly high load or disk usage) via email, but for critical items to alert by pager. Right now we notify via email and pager simultaneously for all ...
3
votes
1answer
3k views

Nagios not following redirect with check_http

Currently for testing I set the service check as follows: define service{ use generic-service host_name <host> service_description HTTP check_command check_http!-s "blablabla" -f ...
3
votes
1answer
712 views

Does Mac OS X SNMP report cached memory?

We're using a Nagios plugin to check the chassis of hosts over SNMP. I'm trying to set up a mac os x machine, but it's failing. All the rest of our hosts we're checking are Linux. This is the first ...
2
votes
4answers
3k views

How to send an “Everything is OK” notification from Nagios?

I need to configure Nagios to send a notification that says everything goes well, if there's no problems. Does this sort of setting exist or is there a plugin for that?
0
votes
4answers
573 views

More detail EC2 instances monitoring? [closed]

I am currently using AWS Cloudwatch to monitor basic metrics of my EC2 servers. But it is lacking of detail monitoring such as partition space used, memory free etc. Should I install and use Nagios, ...
6
votes
2answers
18k views

Nagios “CRITICAL - Socket timeout after 10 seconds” problems with service and host Checks

got a little bit of a problem with a Nagios system we are using in our office, which has only recently started appearing. what i would like to know really is the best solution to resolve this problem ...
3
votes
4answers
2k views

Monitor multiple webs within a server in nagios

i would like to monitor/test multiple virtual hosts in an Apache Webserver and besides, i would like that these checks appears as a one service in Nagios -> HTTP. And if one of the web/URL fails, the ...
3
votes
3answers
4k views

Change how Nagios determines if server is offline?

I'm new to nagios and my server is on a network which does not allow the server to be pinged. Is it possible for me to check if the server is up another way? e.g via SSH or HTTP? How would I do this ...
3
votes
5answers
2k views

Allow host down while under nagios watch

We're using nagios to watch our servers health. Now we have a task to add server which will be up only for certain time. And during that time we have to ensure that all services are up and running. ...
2
votes
2answers
1k views

Getting the currently logged-in user to a Windows XP Pro system

We have a XP machine which runs scheduled tasks early in the morning and unfortunately has to be logged into the desktop of a certain user for that to work. Unfortunately, that user sometimes gets ...
2
votes
1answer
2k views

Where are Nagios Availability-Report files stored?

How to access Nagios Availability-Report files to retrieve "UP Time Percent" and so other information about Hosts and Services? I know It can be accessed through Nagios CGI but I want to use it on a ...
2
votes
1answer
1k views

Nagios XI Virtual Server on Hyper-V - Networking

I'm trying to get the Nagios XI virtual machine working on Hyper-V (yes, I know it's not a supported config). I'm trying to get it on the network to download some packages so that I can then install ...
2
votes
1answer
2k views

Nagios NTP, discarding peer

We're using nagios *check_ntp_time* for monitoring time on our servers. Unfortunately the service is flapping. And reporting a lot of false-positives. It happens everytime for random server in random ...
2
votes
5answers
11k views

What Warning and Critical values to use for check_load?

Right now I am using these values: # y = c * p / 100 # y: nagios value # c: number of cores # p: wanted load procent # 4 cores # time 5 minutes 10 minutes 15 minutes # warning: 90% ...
2
votes
1answer
243 views

Is there a Nagios plugin that enables you to specify the referrer URL when checking a URL?

I want to monitor site A that only accepts requests for a certain URL if the requests originate from site B. I know Wget has an option of downloading content protected by referrer like so wget ...
1
vote
2answers
57 views

NAGIOS host availability test for host that can't be PINGed, won't talk to me, but can be traceroute'd

Part of my network estate has a fairly important dependency on a host whose availability is difficult to check. I have a number of hosts behind it, and my NAGIOS VPS provider occasionally has routing ...
1
vote
2answers
278 views

Get full list of host and services from Nagios

I need to get a full list of hosts and services from Nagios, to make a decision table. I think there is two methods, querying the Nagios CGI, and parsing the Nagios cfg files. But... Nagios cfg ...
1
vote
1answer
263 views

Installing nagios plugins

I have worked my way through installing Ubuntu and getting nagios up and running and now monitoring about 60 windows clients with NSCleint. This is working great but now I want to add UPS monitoring ...
1
vote
1answer
1k views

monitoring of the virtual host (apache) bandwidth and visitors via nagios?

I've installed Nagios and Centreon, and I want to monitor the bandwidth and the number of visitors of each VirtualHost in Apache server. I've found check_http but it checks only if the virtualHost is ...
0
votes
1answer
915 views

Nagios - check_ntp_time - Offset Unknown

I have a local NTP server running on the subnet to keep other subnet nodes in sync, without every node syncing with upstream servers. But, while implementing the check_ntp_time plugin for Nagios I am ...
0
votes
1answer
3k views

Nagios SMS notififacion with gammu smsd does not work

gammu-smsd configuration: #vi /etc/gammu-smsdrc # Configuration file for Gammu SMS Daemon # Gammu library configuration, see gammurc(5) [gammu] # Please configure this! port = /dev/rfcomm0 ...
0
votes
2answers
381 views

Can i get nagios to check the health of my website?

I notice that one of my sites wasnt working properly and was giving me 500 errors. Nagios didn't catch it because the HTTP server was still working. Is there a way i can tell nagios to check the ...