Applications or appliances that observe machines, systems and networks to find problems and notify administrators.

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118 views

Cross-referencing charts (e.g. munin) with log files

Is there a charting package like Munin (or an addon for it) that will let me click on a graph period and then see all the logs on that box for that period? e.g. if I see a huge spike in disk I/O 12 ...
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69 views

% segments retransmitted above threshold

I've been doing some monitoring on our servers and we get warnings that the TCPv4 / % Segments Retransmitted is above acceptable threshold: http://imgur.com/b8RNm Is there any way to tell what the ...
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101 views

Getting the virtual memory address for (major) page faults

On a Linux (Cent OS 5) system, I have a process that accesses a large amount of memory mapped files. The process is generating a large amount of page faults because the aggregated size of the mapped ...
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670 views

Monitoring JBOSS 6.1 with SCOM 2012 using JMX

I have really no knowledge about SCOM and a very little knowledge about JMX protocol. What I am trying to achieve is I have a HelloWorld application which has an HelloWorldMBean works perfectly fine ...
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284 views

How to test that an exported resource in puppet exists after collecting?

I want to create a nagios_hostgroup if some hosts exists. For creating hosts in nagios I am using exported resources which I collect on the monitoring server. How can I test that a exported ...
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3k views

No handler for command 'CheckFileSize' in NSClient++

I am trying to set up monitoring of the size of folders on a Windows server from a Linux box through NRPE using NSClient++ (0.4.0.148-win64) . The basic setup is ok and I am for example able to issue ...
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236 views

Icinga HTTP on Apache server does not return 200 intermitently

I have a server running Apache/2.2.16 on Debian Lenny. The server is host to about 6 vhosts. One of the vhosts is just the FQDN for the server and doesn't have much of anything but an index.html ...
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62 views

SQL - progmatically change refresh rate for ALL publishers in replication monitor

How can I change progmattically change the refresh rate of all the publishers in the repliation monitor ? Without going into each one to change it's publisher setttings. MS SQL SMS 2008 R2 AHIA, ...
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11 views

How to Monitor all virtual host Web traffic in Real-Time in one console

I want to monitor web traffic from each domain I have installed on my dedicated server. All my domains were added in apache as virtual host. I need each domain Google bot hits only basis, and human ...
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20 views

monitoring if the ip is down (not up)

Is there a monitoring service that can notify if the IP that is normally down becomes reachable? So, the reverse of the usual stuff. I just need to check a few IPs, so bringing up a complete ...
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15 views

Running monit AND supervisord simulatenously. Any possible issues?

Two aims: 1) Make sure background daemons such as webserver/rabbitmq are running all the time. If they crash they are automatically restarted etc. For this I am using monit with a config like: set ...
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14 views

CPU usage plot in graphana

I am trying to plot CPU usage in Graphana. Collectd gives metric to InfluxDB and I get metric from Influxdb into Graphana. I have tried taking derivative of last value but CPU is in negative. I want ...
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12 views

/proc/diskstats: No such file or directory

Trying to get some disk performance metrics (in particular, using munin), found that /proc/diskstats does not exist. Tried yum provides '*/diskstats' but nothing except munin was found. CentOS ...
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16 views

Nagios configuration files issue

I am using nagios core 3.3.1 and have added some service groups and corresponding dependencies. While trying to verify if my configurations are correct, I run the following command: /usr/local/nagios/...
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32 views

Set Low Disk Space email alerts for windows 10

I want to set email alerts for my disks, so that if there would be 30GB free space then I will get an email alert. I found some solutions for windows 2008 but they didn't work for me in Windows 10. ...
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20 views

Monitoring HAProxy to determine need to scale

I'm learning about load-balancing and auto scaling at the moment. I have a VM running HAproxy with 3 nodes under it to distribute traffic. My endgoal is to spam it to overload number of requests it ...
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23 views

Monit run script on restart

So I have been trying to get Monit to run a script on start of a service. While Monit has no problem restarting the service, I of course want to be alerted when if my service required starting, not ...
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14 views

Detect changes of VM parameters

We run VMs in remote data centers. We are responsible for the VM, but not for the hypervisor. We want to detect changes in the resources of the VM. Example: VM has 10GByte memory - everything is ...
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16 views

How to set specific time frame for only 1 query when configuring a graph in Grafana?

I need to configure a graph in Grafana which is supposed to display disk growth of the database disk in MongoDB server. I've already measured disk growth per day and the current growth per day is ...
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35 views

WMI fails with to query with linux wmic, but works from a windows machine

I have 2 Servers, one at 192.168.1.10 and one at 192.168.1.20, one work, the other gives me this output and I cannot figure out why, they are both running Windows 12R2. I am able to query the machine ...
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14 views

Sensu remediation: not able to trigger client

Sensu Monitoring.... Senario: if my http link goes down then i use to manually run the script and start it. we moved to Sensu recently as its GUI and monitoring system is quite impressive ,I tried ...
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34 views

Estimate when a filesystem will be full

Background I'm managing about 50 CentOS 5.6 Linux servers in my workplace with some critical filesystems that store weekly backups of applications, databases and user workplace files. Problem Last ...
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24 views

How does nginx-plus calculates cache hit ratio

I'm creating a plugin to be compatible with nginx-plus live metrics, and I'm puzzled on how they calculate the cache hit ratio. In using their demo site as well as their demo API, but still don't know ...
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11 views

Trace New Processes Executing Shell Scripts

A web interface executes specific shell scripts on a server when a user triggers certain actions, like pressing a submit button. On the SLE10 server, I would like to have a tool that after starting it ...
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19 views

nagios custom script working locally, returns null in UI

I have a custom script that I've defined within my nagios command.cfg and service definitions. When run locally as nagios on the monitoring host, it returns the expected output (a large hash of stats ...
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12 views

Apache2 Traffic Overstated to the the point of Ludicrousness

Here's the status page from a rarely visited web site I host. What could make the traffic statistic so off the scale high? Edit: this is an ancient 32-bit Dell Dimension 4600 machine running ...
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18 views

Adding more colors in the plots in the Ganglia Web Interface

I use ganglia to monitor my computer cluster. On Ganglia Web Interface, is it possible to add more colors in the plots? There seems to be 9 colors by default, which prevents me from seeing to which ...
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26 views

Ganglia showing both host names and IPs

I restarted the gmond daemon (sudo /etc/init.d/gmetad restart), and now the Ganglia web interface is showing both host names and IPs: As a result, each server now appears as two different entries ...
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29 views

Airodump-ng Not Showing Anything

I am using Kali Linux to test some adapters. First of all, I don't know why, but I have a wlan0 and wlan1. I have tried both of them and I still have the same problem. So far I can issue the command: ...
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145 views

Zabbix JMX custom java app monitoring

We are trying to monitor a custom java app and retrieve JMX data from that host . I've tried to figure out the issue for the past 2 days but with no success . Unfortunately zabbix documentation does ...
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7 views

ganglia only shows unspecified cluster

I have configured a ganglia in my office to monitor server resource utilization. i have configured a data_source but its showing in ganglia web. data_source "test-cluster" 30 10.220.8.54:8649
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67 views

Icinga2 Mail Notifications Per HostGroup

I have a working Icinga2 installation and I have a number of servers/worstations broken up into hostgroups. For example, I have Fixed Servers - hostgroup is fixed-workstations Tiered Server - ...
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20 views

Oprofile events are not available

I run an Intel(R) Xeon(R) CPU E5520 @ 2.27GHz and I've just started to use Oprofile. I want to measure some events like the BUS_REQ_OUTSTANDING and BUS_TRAN_BRD but are not available. Is ...
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59 views

Nagios plugin(check_nrpe) unable to communicate to Sensu Api

I am trying to do a simple Sensu integration with Nagios. I ran into some trouble with check_nrpe. So there is a NAGIOS server polling on a SENSU server. My nagios check script: /usr/lib64/nagios/...
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17 views

How can i monitor puma using graphite?

How can I monitor puma (rails web server) in my ubuntu 14.04 server using graphite? If not graphite , what other alternative can be used ? I have tried to monitor it as a process using the process ...
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16 views

Munin graphs not being removed from html page after plugin removed

I have a munin server and many linux nodes. That all works fine. I wrote some custom munin plugins. They worked. They appeared on the munin html page. I have since deleted those plugins. However my ...
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36 views

Can we write an custom check for monitoring a process with Data Dog

I want to write an DataDog Check to monitor some process like Puma, delayed_job etc, I can see there are ready plugins available for these for nagios and Sensu but not for DataDog, But can I write my ...
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22 views

Forward psacct logs to rsyslog

I want to monitor users activity and aggregate logs using rsyslog. Is there any way how to do it natively? If I understand how does psacct work, it monitors whole users activity and saves logs in own ...
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46 views

SNMP OID mappings

I am trying to get ifDescr and ifHCInOctets OID from my pfsense firewall. When I issue a Get from snmpwalk: snmpwalk -v 2c -c xxxxx 10.1.0.41 .1.3.6.1.2.1.2.2.1.2 I receive the following output: ...
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143 views

Collectd dynamic (regex match) “Instance”

I thought I had seen, but subsequently cannot find information on how to use the regex matches in Instance. For example I have an nginx matcher which has the following, I'd like to replace 61: and 111:...
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7 views

How to use number of CPUs as a multiplier in monit config?

What is the best way to use number of CPUs as a multiplier in monit confs? I need this for a system that has varrying number of CPUs, depending on predicted load. Right now the only idea I have is ...
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136 views

Zabbix Graphs Show No Data When Data is Available in Latest Data

I have an issue when I make a graph and Add Total Memory, it says that there is no data. I also have other details such as Available Memory and Used Memory which are working on the same graph. If I ...
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24 views

fileschanged daemon dies unexpectedly

I'm using fileschanged to monitor files on server1 and run a bash script to synch the files in server1 to server2 if any of the files are changed in server1. to do that I'm running this: fileschanged ...
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333 views

How to create custom graph in Observium

I`m trying create custom craph in Observium(http://www.observium.org/). I use this manual http://www.keithrogers.co.uk/?p=12 I can telnet myhost 36602 and receive result: <<<app-...
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30 views

collectl vs strace - reported block io read/write size

I've got an xfs mount with standard settings (it's an AWS host): [root@host ~]# xfs_info /dev/xvda1 meta-data=/dev/xvda1 isize=256 agcount=4, agsize=524224 blks = ...
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173 views

Java, VisualVM : Setting up VisualVM properly for Java8 based webapps

I have a Java based webapp which I have deployed on one of our server. Sometimes the JVM died because of out-of-memory error. The application is kinda heavy as it uses Cometd(Push mechanism) heavily ...
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23 views

Adding a server to xymon bb-hosts with pem file

We have a Xymon/Hobbit server set up for monitoring, works great. However I need to add a new server to the monitor list. Normally this is straightforward, however to be able to SSH into this server I ...
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48 views

Is there something to consider when using pm2 with nginx

PM2 is a great processmanager with the bonus that the status of single proccesses can be read via a proteced API. Although it is mainly focused on running node-apps, it is also able to start anything ...
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138 views

Graphs not showing in Ganglia web frontend

I have setup Ganglia as per the following site and everything went well.I was able to test both the gmetad and gmond services. But when i try to access the webfront-end via /server-ip/ganglia i dont ...
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33 views

How can I tell if I don't get e-mail

That sounds a little silly but bear with me... I have several servers which run several automated processes which each e-mail me status reports (e.g., build success or failure). However, there are ...