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

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10answers
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Server health monitoring software [closed]

Hey all! I am looking for some software to monitor the health status of our servers. Our environment is a pretty typical mix of HP/Dell running Microsoft Server and VMware vSphere. We are currently ...
6
votes
6answers
5k views

how to write a script that only acts on new log entries

I feel like this should be a simple thing but I am having a hard time figuring it out. I am trying to write a script that will monitor one of the apache log files and take some specific action. But ...
6
votes
5answers
2k views

Nagios Check that Simulates Web Full Rendering Time

Does anyone know of a Nagios plugin or cli program that can simulate the load time of a webpage as it would be in a browser. For example the resulting total load time of something like Pingdom's Full ...
6
votes
4answers
11k views

Monitoring hardware RAID on VMWare ESXi

I've got an ESXi 3.5 server on "unsupported" hardware - SuperMicro motherboard, Adaptec 9410 3405 RAID controller (oops, the 9410 is the onboard controller that's not being used for RAID) - and I'm ...
6
votes
8answers
3k views

Deployment and monitoring tools for java/tomcat/linux environment

I'm a developer for many years, but don't have tons of experience in ops, so apology if this is a newbe question. In my company we run a web service written in Java mainly based on a Tomcat web ...
6
votes
6answers
2k views

Best OpenSource Monitoring Tool? [closed]

I'm trying to decide between Zenoss and GroundWork. I need an enterprise level monitoring tool and I had heard really good comments of these tools. Do any of you have implemented them? Which are ...
6
votes
6answers
5k views

Distributed Nagios Installation

I'm looking for a plug-in or product that will act as a remote probe and perform tests then send back the results to the central Nagios server. Reason for this is that I'd like to monitor internal ...
6
votes
3answers
2k views

Free software to monitor serial port communication [closed]

I'm looking for the Wireshark of Serial Port monitoring. I'd prefer free/open-source software, but am willing to look at commercial solutions if the price is reasonable. It needs to be compatible ...
6
votes
2answers
8k views

Disk/RAID Monitoring for HP Proliant Servers and Ubuntu 12.04

How can I monitor the status of the hard disks and the RAIDs of an HP Proliant server using Ubuntu 12.04. In Ubuntu 10.04 I could use the cciss-vol-status to query the RAID status periodically but ...
6
votes
3answers
3k views

Is Nagios “monitoring” over WAN ideal?

Just started at a new company and one my first assignments is to look for alternatives to their inhouse monitoring system. Their current solution is a .Net application that checks various devices ...
6
votes
4answers
1k views

Packeteer Alternative [closed]

I have been tasked with starting to monitor and restrict our companies internet access. We have considered a Squid Proxy server but have decided we need something more robust then that. We would like ...
6
votes
4answers
4k views

What is the difference between nagios xi and cacti for monitoring?

Nagios XI (This is a commercial implementation of Nagios) can graph as well as send alerts based on threshold conditions. I am not able to understand the difference between Nagios and Cacti. Any idea ...
6
votes
3answers
457 views

Nagios3: Conditional operators for service checks?

I'm trying to setup Nagios to monitor my various machines using hostgroups to define 'machine roles', against which I run services to check the machines by role. However, I'd like to use conditional ...
6
votes
1answer
944 views

The benefits of using statsd?

So I've been playing around with graphite for the past few days and I can see the potential there and why it is so powerful. My main question is why should I use statsd in front of it like esty and ...
6
votes
1answer
2k views

FreeBSD: periodic(8) is too noisy. How can I control the noise level?

FreeBSD & MacOSX ship with the the periodic(8) utility, which is a neatly organized set of utilities to periodically run system functions like ZFS filesystem checks, security checks, checking for ...
6
votes
1answer
4k views

How do I remotely install, configure and maintain SNMP?

I'm looking to remotely install the SNMP and SNMP WMI Provider services on Windows Server 2008 R2, configure specific options for the Agent, Traps, and Security tabs, then make sure these services and ...
6
votes
4answers
132 views

Which program do you recommend for monitoring the list of installed programs in Windows? [closed]

I am in charge of a computer network in a small company (20..30 computers). Recently the need arose to control what kinds of programs our company is using i.e. to collect information that is available ...
6
votes
1answer
2k views

Linux Process Accounting - Difference between 'cp' and 'cpu' fields?

I've been looking at using process accounting for keeping track of various users and sites running scripts that are problematic in our environment instead of trying to do something like scraping top ...
6
votes
2answers
476 views

Monitoring Active Directory (AD) Replication in Windows Server 2008 R2

With Active Directory, what is a good way to monitor replication? I have multiple sites and multiple locations, so ideally both replication between sites and within sites would be monitored. I'm not ...
6
votes
3answers
658 views

A strategy for network monitoring to improve network health?

The goal is to find out which parts of network should be upgraded / reorganized to improve network health (reliability and performance). What are the methods to monitor network traffic, detect ...
6
votes
8answers
3k views

Monitor File Changes On Windows System

I am looking for a utility that can take a snapshot of the files in directories that I am interested in and then compare that snapshot to the current state of the system and show me any files that ...
6
votes
2answers
119 views

Looking for software to monitor scheduled emails and notify when they don't arrive or contain errors

We, like many others I assume, get a lot of emails from systems running automated task (backups and such). Those emails should arrive on certain schedules and not contain error messages. If they ...
6
votes
1answer
1k views

ext3 file system performance tuning: what metrics to monitor

I have a high-IO application that is working, and scaling well to date. Over the past few months we've been trying to look down the road and predict where our next bottlenecks will occur. One of ...
6
votes
2answers
402 views

Detecting server abuse

Is there any standard way to prevent shared web servers from being abused? I run a CPanel box with a few people on it, and I get the occasional person that decides to use it to DoS other websites. ...
6
votes
1answer
4k views

How to migrate all Cacti devices from 5 minute polls to 1 minute polls?

I have just taken over a Cacti server and am having a nightmare moving from 5 minute polls to 1 minute polls. So far, I have changed the data template along with the Step (from 300 down to 60) and ...
5
votes
8answers
36k views

Testing a website from Linux command line

I am looking for a tool to test a website from a Linux command line. From the output, I need to know the http response (status codes) but also benchmark the time it takes to download the different ...
5
votes
5answers
25k views

How can I manually run a nagios check from the command line?

When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. Is ...
5
votes
6answers
6k views

Monitoring CPU usage in Ubuntu

How to find out what process is using CPU to what extent in Ubuntu? I'd like to have real-time data as well as recorded history. Both console and GUI apps would be great. The situation is that my ...
5
votes
3answers
15k views

Monitor ssh on non-default port with Nagios

I just deployed Nagios on a Gentoo server and everything is fine except ssh, which it marks as "CRITICAL" because it's refusing connections. But that's because it's running on a port different from ...
5
votes
6answers
7k views

Simple web server monitoring (alive)

Any tip about software to monitor if a web server is up and running on linux ? It should be able to run with not knowing anything more than the URL. And it must have functionality to send an email ...
5
votes
4answers
8k views

How to see incoming IPs in Linux?

I am wondering what is the command/utility to have a real-time view of incoming IPs to my server, ideally along with the port and connected.
5
votes
4answers
3k views

How do I monitor redundant power supplies on a Dell server?

I'm purchasing a Dell R610 with redundant power supplies. What is the best way to be alerted in the event that one of the power supplies fails? I'll be running Windows Server 2008 R2. Since this ...
5
votes
5answers
13k views

How can I monitor memory usage for a windows-based JVM and trigger an alert if it gets too high?

I have an app that runs as a JVM in Windows 2008. I'd like to monitor it's memory usage and be sent an email if/when memory usage reaches a specific threshold. Is there a free utility or method for ...
5
votes
4answers
907 views

Log monitoring toolsets for Unix? [closed]

What are some good tools for monitoring logs on a system? I am currently using logsentry, which basically just runs grep on logs, ignores regexps I tell it to ignore, and mails me everything else, but ...
5
votes
4answers
5k views

How can I make Status Information for Nagios services easier to read?

I'm running Nagios in an environment with several servers, each with several services on them. There are a few custom checks, but it's nice to use existing checks if possible. I'm using NRPE plugin ...
5
votes
3answers
2k views

Cacti Graphing incorrect load averages

I've just set up cacti to monitor CPU and memory usage on a server that I think needs to be upgraded, but to be able to make my case for funding I need hard facts. I figured getting Cacti to monitor ...
5
votes
2answers
346 views

How do I audit network connections that exceed a certain amount of traffic or bandwidth on Linux?

I've looking after some Debian boxes and occasionally I see a big spike in the network traffic. I'm graphing metrics with graphite (being fed by a sensu check which gathers per-interface metrics every ...
5
votes
1answer
2k views

Can someone explain the “use-cases” for the default munin graphs?

When installing munin, it activates a default set of plugins (at least on ubuntu). Alternatively, you can simply run munin-node-configure to figure out which plugins are supported on your system. Most ...
5
votes
6answers
243 views

What is a simple & common command line tool to show network usage on a Linux machine?

I'm looking for a simple command line linux tool that will show me the current network usage, the same way top displays CPU usage. What is the most standard tool (I can't install new things on the ...
5
votes
4answers
5k views

Ganglia without multicast

I'm running Ganglia 3.1.2 on a network where there is no multicast (nor can I turn it on). Does anyone have an elegant solution for getting ganglia to work correctly? I found this: ...
5
votes
2answers
4k views

Is there an alternative to Cacti that is Windows-only?

I've just spent the better part of 4 hours trying to get Cacti set up on my Windows 2008 server (involves setting up PHP, MySQL, etc) and I've managed to get the UI working, but can't get the graphs ...
5
votes
3answers
166 views

Sort Active Processes in Unix

How can i sort active processes by total process time in unix?
5
votes
2answers
1k views

Ways to monitor SIP termination on an asterisk server

I have a nagios setup which ensures that SIP is responsive on my Asterisk server, that's straight forward. My question is, what kind of possibilities are there that the Asterisk server can actually ...
5
votes
4answers
246 views

Process monitoring services

I'm looking into different services that help keep processes up and running (auto-restart in the event of a crash). Which ones do you prefer and what are your commends/suggestions? Here are a few ...
5
votes
1answer
356 views

Agentless monitoring: how does it work? Advantages over traditional monitoring?

How does agentless monitoring work? From what I understood (or not), it seems this is accomplished by logging into the node-being-monitored from a central server and uploading-then-running scripts on ...
5
votes
5answers
4k views

Simple internet connection uptime monitor

I need to just monitor how often an internet connection goes down - and for how long. I was going to just write a bit of python that pinged 8.8.8.8 every minute but I thought there must be a util that ...
5
votes
5answers
7k views

PNP4Nagios, nagiosgraph, separate Cacti, or something else for Nagios trending

I've been using Nagios for a while now and recently started using Cacti after being dissatisfied with the lack of scaling and lack of any GUI in MRTG. I'm interested in adding trending to my Nagios ...
5
votes
2answers
3k views

Best practices for monitoring a JIRA installation?

One of my clients has a confluence / JIRA system set up. They've been having some issues- outbound email gets wedged, etc. If you support a JIRA install, what do you monitor? Do you use JMX? Direct ...
5
votes
4answers
302 views

Internet Usage on K-12 Student Laptops

I'm developing some workshop curriculum on the topic of Internet safety for the purpose of helping parents protect their kids. I'm good on the issue of helping parents control their home computers ...
5
votes
7answers
4k views

Looking for a way to monitor / notify when IIS goes down

Looking for some software / methodology to monitor a Windows 2003 server and (hopefully) send out an e-mail out when the IIS server service stops / IIS goes down. Thanks.