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

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187
votes
73answers
191k views

What tool do you use to monitor your servers?

For a more comprehensive list of monitoring tools and their features, check out this Wikipedia page. As the question states, what are the most commonly used tools used for this task and what are ...
42
votes
19answers
8k views

Can anyone recommend a website monitoring service? [closed]

What are people using for website monitoring services? I am referring to a service that I can configure specific hits to my site to monitor if the site is up, and how fast it is responding to the ...
20
votes
5answers
2k views

What am I looking for in a Monitoring Solution?

This is a Canonical Question about Monitoring Software. Also Related: What tool do you use to monitor your servers? I need to monitor my servers; what do I need to consider when deciding on a ...
18
votes
10answers
3k views

Network Traffic Monitoring

What is the best tool to monitor/analyze network traffic on an entire network (several subnets)? I'm looking for something that will help me toubleshoot bandwidth problems when, for instance, users ...
25
votes
5answers
20k views

monit: check process without pidfile

I'm looking for a way to kill all processes with a given name that have been running for more than X amount of time. I spawn many instances of this particular executable, and sometimes it goes into a ...
14
votes
5answers
4k views

What is the best way to monitor a production server?

We are running two production servers with Apache 2 and MySQL. I am looking for a reliable way of monitoring our load, stability and uptime. I have come across monit, but are there better ...
11
votes
9answers
3k views

Should old servers be retired

I have servers which are still running well but are over 5 years old. They are still doing the job perfectly and there will be no advantage to upgrade the servers, should I just let them run forever ...
10
votes
5answers
16k views

How do you monitor the health of a mirrored disk in Windows?

I have a Mirrored Dynamic disk on my Windows 2003 Server. How do you monitor the health of the volume? Is there a way to have the server send an email when there is an issue with the volume? Is there ...
2
votes
4answers
2k 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 ...
216
votes
2answers
78k views

What exactly do the colors in htop status bars mean?

By default, htop shows colored status bars for processors, memory, and swap. From left to right, the bars are colored green, blue, yellow, and red depending on some thresholds. What does it mean when ...
18
votes
4answers
2k views

Monitoring production server [closed]

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 ...
15
votes
9answers
9k 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 ...
8
votes
9answers
2k views

Network monitoring [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? What software would you recommend to monitor a network? We have a main server which acts as a DNS among other services. And we ...
20
votes
2answers
3k views

Is there a Windows equivalent of Unix 'CPU steal time'?

In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an ...
10
votes
3answers
1k views

Monitor Internet bandwidth

We have an IPCop firewall/proxy installed in our network, and although I can use iftop to somewhat take a look at how the clients are using the Internet, is it possible to monitor it from outside the ...
6
votes
9answers
2k views

What tool do you use to monitor your clients?

Well, we had "What tool do you use to monitor your servers?", and I wondered, do you (and should you) monitor your clients (desktops and laptops)? What tools are useful for this? It seems to me that ...
4
votes
1answer
3k views

How can I monitor bandwidth usage by Virtual Host in Apache on Ubuntu

My Environment: Apache 2.2.9, Ubuntu 8.10 I am trying to find a way to monitor the bandwidth usage on my server broken out by each virtualhost WITHOUT installing something like PLESK, CPanel, or ...
18
votes
7answers
39k views

Enable Ping in Windows Server Firewall?

I've just installed Windows Server 2008 on a server and I'm able to connect through Remote Desktop but can't ping. Do I need to open an special port on the firewall to be able to ping a server?
-1
votes
3answers
1k views

Looking for Hard Drive Health Monitoring software [closed]

I am aware that the current standard method of drive redundancy and backups would be a better solution, but I would be interested if there was a software that could be installed on workstation ...
3
votes
1answer
9k views

HP DL380 G6: Where is Temperature Sensor 30 (I/O Board Zone)?

In ILO2 firmware 2.15 on my DL380 G6, the Temp 30 sensor (location: I/O Board Zone) indicates 65C and my fans are running at 78% capacity. The Caution level for this zone is 110C, and the Critical ...
7
votes
5answers
34k 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% ...
20
votes
4answers
14k views

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

Our Linux systems run logwatch(8) utility by default. On a RedHat/CentOS/SL system, Logwatch is called by the /etc/cron.daily/ cronjob, which then sends a daily email with the results. These emails ...
6
votes
12answers
1k views

application monitoring tools

we're an ISV about to deploy our SaaS application over the internet to our end users, and are currently looking for an application monitoring solution. In addition to monitoring the usual OS-level ...
5
votes
3answers
9k 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 ...
4
votes
6answers
732 views

Recommended website performance monitoring services? [closed]

I'm looking for a good performance monitoring service for websites. I know about some of the available general monitoring services that check for uptime and notify you about unavailable services. But ...
20
votes
3answers
44k views

ipmitool - can't find /dev/ipmi0 or /dev/ipmidev/0

Based on a previous question, I installed ipmitool (yum install ipmitool). Even after a reboot, though, i get the following error when trying to run ipmitool power status: Could not open device at /...
0
votes
4answers
15k views

How can I find out how many updates are waiting to be installed on a remote server

Is there a way to find out if a Windows Server (2003, 2008) has downloaded the Microsoft Windows updates and is just waiting for the user to confirm "Install Updates and Restart the server"? We use ...
10
votes
4answers
3k views

Monitoring Dell/HP Servers Running ESXi (Free)

What are you all doing to monitor ESXi servers that run the free edition? With the lack of SNMP support, it seems fairly limited to me. What'd I'd like to be able to do is get some type of alert when ...
6
votes
10answers
3k views

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
14k 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 ...
7
votes
6answers
19k views

What is the Best Way to Monitor Server Temperature?

I need to be able to monitor the temperature of a couple of servers remotely. Does anyone know of any free/cheap software that will monitor the server temp and email it or at least output it so that ...
5
votes
1answer
4k 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
2answers
185 views

Monitoring social sites usage and sending warnings to users that went over daily quota [closed]

Are there any tools that can monitor social sites (Facebook, Twitter and so on) usage, and if a particular user has overused his/her daily quota, send him/her a warning?
2
votes
2answers
2k views

Help me understand mk-heartbeat

Seconds_Behind_Master from SHOW SLAVE STATUS is considered an unreliable measure of Slave lag. mk-heartbeat is often offered as a reliable alternative. Now mk-heartbeat does not even need the Slave ...
2
votes
3answers
4k views

How can I monitor per-user bandwidth on linux?

I'm looking to monitor how much bandwidth different users consume on a server. Effectively, I'm looking for something like UserIPacct (http://ramses.smeyers.be/homepage/useripacct/), where I can get ...
1
vote
1answer
638 views

Awaken monit daemon every few hours for all monitored processes

I am seeing a problem with monit config in configuring the monit daemon to awaken every few hours and start monitoring the processes which were set to "Not Monitored" state. PROBLEM: When the monit ...
0
votes
1answer
851 views

Monitoring message delivery on Postfix (or Cyrus IMAP)

There's mail server based on Postfix. I need to monitor which messages are delivered to end-user? and which are not. In processing of each message I need to get some information from its attachment in ...
4
votes
1answer
5k views

Icinga-web doesn't update when i change configuration

So I've just installed Icinga and Icinga-Web. And everything looked ok when first inspecting the UI's on http://[server]/icinga/ and http://[server]/icinga-web/... I went on and added some new hosts, ...
3
votes
4answers
5k views

Hidden Periodic Screenshots on a corporate workstation?

Can anyone recommend something that allows us to take hidden periodic screenshots of a workstation? We have a user who we believe is abusing his computer privileges. We have our suspicions that he ...
1
vote
4answers
263 views

Monitoring a one-off service

We do not have any sort of proper server monitoring solution in place (a situation I'd like to rectify this summer), but I've got one service in particular that I'd like to monitor. [Our current ...
1
vote
1answer
6k views

VCenter Server shows error on Hardware Status for hosts

I'm running VMware ESXi on two Dell PowerEdge R610 servers, with a third server, a PowerEdge R410 running vCenter Server. We have an Essentials license. In the past I used to be able to open vCenter ...
0
votes
2answers
1k views

Monitor status of VPN clients

Is there any better solution than ping -t for monitor status of some VPN clients. I have set up FreeBSD router with fix public IP address for accepting incoming PPTP VPN connections. The callers are ...
25
votes
6answers
12k views

Colorize Monitoring of Logs

I sometimes monitor apache and php error logs using tail under FreeBSD. Is there any way to get colorized output, either using tail or some other command line app? Alternatively, what is your ...
22
votes
8answers
18k views

How can I see how much bandwidth each Apache Virtual Host is using?

I have Apache set up to serve several Virtual Hosts, and I would like to see how much bandwidth each site uses. I can see how much the entire server uses, but I would like more detailed reports. ...
14
votes
16answers
11k views

Real time monitoring of MS Windows servers and their services

We have a bunch of large HDTVs in our monitoring office keeping an eye on all of our production equipment. We are monitoring: Cisco routers HP switches HP proliant servers Windows 2003 IIS SQL ...
18
votes
11answers
23k views

How to monitor and log the memory/cpu usage of processes over time? [closed]

I am looking for a way to diagnose issues, such as swap death, where a balooning memory process fills up swap and kills the whole machine (such as apache). I'm already using cacti and I can set up ...
16
votes
8answers
8k 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 ...
14
votes
4answers
3k views

Log transport and aggregation at scale

How're you analysing log files from UNIX/Linux machines? We run several hundred servers which all generate their own log files, either directly or through syslog. I'm looking for a decent solution to ...
17
votes
6answers
14k views

Is Zabbix the right tool for me?

I just want to monitor a small handful of servers (less than 10). From reading various places it sounds like the top leading contenders (for open source at least) are: nagios munin zabbix From ...
15
votes
4answers
2k views

How to Monitor Bandwidth usage in real terms

I have a small (windows) network with a few people on it. We have internet access via a BT router Generally things are all fine, but occasionally, we seem to experience a dramatic loss of bandwidth....