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• Monitoring bandwidth/latency/jitter between 2 sites?

  - by TheCleaner

  I have 2 sites connected via an MPLS network and I'd like to do the following: setup a host on each end that can "talk" back and forth between each other and somehow report/log what kind of throughput, jitter, latency, etc. they are experiencing between each other in 5 minute intervals. Something similar to Qcheck but that can be automated. Bottom line is I'm trying to determine if the WAN network is "stable" throughout the day or if something is wrong. We have video conferences between these sites and even at 1024kbps calls we are experiencing delays and jitter. I'm hoping to exonerate the network with some testing.

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• Windows 2003 :: Performance Monitoring :: Simple/Stupid Tutorial

  - by BSI Support

  I have a half dozen front-end servers all running IIS 6.0-based/hosted applications. (primary .NET 2.0 web apps.) Basically, I'd like to take some basic performance data from each one, through such into a spreadsheet, and compare. CPU load, RAM load, whatever... If anyone can point out a very simple/stupid "here's how you do that" type of tutorial, that would be wonderful.

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• Approach for monitoring internet backbone traffic volume

  - by Greg Harman

  I'm interested in getting a picture of relative volume across different internet backbones. In particular, I'd like to see how traffic volume over a given route differs over the course of a day or from one day to the next. InternetTrafficReport.com is the closest approximation to this that I've found online, and their approach is to test ping times to a number of key routers from several geographically-dispersed servers. This sounds like one straightforward way to measure, but I don't have several geographically-dispersed servers. Is there a different approach for sampling this type of information from a single server?

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• Monitoring RAID with CERC SATA 2s Controller from Ubuntu

  - by gshankar

  We've just reinstalled one of our servers with Ubuntu 10.04 LTS server. It's got a BIOS RAID system using a CERC SATA 2s Controller. (setup in a RAID 1 config) How do I monitor the health of my RAID setup from the Ubuntu OS? Is there a utility program i can use?

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• network monitoring

  - by priyadarshi

  how can I monitor in my network ?which system using how many bandwidth and downloading etc....

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• Monitoring ASA packet loss via SNMP

  - by dunxd

  I want to monitor packet loss on my ASA 5505 VPN endpoints using SNMP. This is so I can graph the rates in Cacti and/or get alerts in Nagios. However, I am not sure what SNMP values I should use to measure packet loss. In the ASA I can run sh interface Internet stats to show traffic statistics for the interface connected to the Internet. This shows 1 minute and 5 minute drop rates. Are these measures an indicator of packet loss? Are there SNMP values I can access that correspond to those values? Should I be looking at different values? Is the ASA even able to measure packet loss?

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• Zabbix - Some of the monitored items dont get refreshd. how to find the reason?

  - by Niro

  I'm experiencing a strange issue with Zabbix monitoring a MySQL server. Most of the data from the server such as MySQL queries per second and MySQL uptime , Buffers memory etc. update nicely while some data like CPU iowait time (avg1) , Host local time ,MySQL number of threads and other items which were monitored in the past has last check time of about a week ago. I can't find any logic in this, for example Mysql number of threads and Mysql queries per second are obtained in a similar way so it does not make sense one of them is monitored and one is not. Please help- how can I fix this?

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• service monitoring manager for Ubuntu ?

  - by mgpyone

  My mate told me that there's a tool to manage services in Ubuntu, System Administration Services. But unfortunately, I don't found it in my Ubuntu (9.10). Is it easy to get it? What package do I need to install? If not, are there any alternative GUI programs to manage services (like mysql, apache and so forth)?

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• Bittorrent surveillance/monitoring

  - by Flamewires

  Is there any tool to sniff bittorrent traffic and reassemble data about the torrent? Im looking for file names, peers, tracker address, local IP, etc. This is purely for academic interest in which all parties would be willing participants and therefore please dont upvote responses that talk merely about legal issues with using this kind of approach on a production network. I also am assuming that the torrent connections are unencrypted. Thanks

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• Monitoring several remote servers over different VPNs

  - by Ciaran

  I'm a developer with about 20 different clients running our server application. I access each of the clients' servers remotely through VPN to provide support, updates, etc. Is there any tool available that I can set up locally that will connect through each of the VPNs automatically to allow me to monitor? The idea sounds very far fetched to me as the VPN software varies a good bit but maybe someone's had to do something similar before? It's been a few years since I last used Nagios but I think it'd be quite cool to have that set up pointing at each of the remote servers through VPN somehow.

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• MySQL monitoring tools

  - by Sebastian Hoitz

  Hi! What tools do you use to monitor the health of your MySQL server instance? Are they for free or commercial?

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• Monitoring host and app parameters in real-time

  - by devopsdude42

  I have a bunch of VMs that I need to monitor in real-time. For all nodes I need to watch host parameters like load, network usage and free memory; and for some I need app-specific metrics too, like redis (some vars from the output of INFO command) and nginx (like requests/sec, avg. request time). Ideally I'd also like to track some parameters from the custom apps that run on these node too. These parameters should get tracked as a bunch of line charts on a dashboard. I checked out graphite and it looks suitable (although the UX and aesthetics looks like it needs some love). But setting up and maintaining graphite looks to be a pain, esp. since we don't have a full-time person just for this. Are there any alternatives? Or at least something that is simpler to setup and will scale? Reasonable paid services are also ok.

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• Looking for way to log process terminations on OS X (Mac)

  - by Stan Sieler

  I'm looking for a way to log all process terminations on my Mac (OS X 10.6.8). (And see pid, timestamp, process name) I've implemented something similar for HP-UX, but it required a kernel-level driver and intercepting several variations of "exit()" (the normal one, and the one invoked on behalf of a process while it's aborting). Why do I want the info? I've been seeing messages in my system log file (dmesg) like: CODE SIGNING: cs_invalid_page(0x1000): p=91550[GoogleSoftwareUp] clearing CS_VALID CODE SIGNING: cs_invalid_page(0x1000): p=92088[GoogleSoftwareUp] clearing CS_VALID Although dmesg lacks timestamps, apps/Utilities/Console : Database : all : search for CS_VALID shows that the messages appears about once every 58 1/2 minutes. I suspect the number after "p=" is a process id (pid) ... but for a process that has long since terminated by the time I see the message. So, if there was a process termination log mechanism that recorded the pid, the time of termination, the reason for termination, and the process name (at time of termination), that would probably allow me to determine who's causing those errors to be logged! (No, I'm not running Chrome on my Mac, and "ps -ef | grep -i goog" gets no hits either ... I'm not consciously running any Google apps on the Mac) thanks, Stan [email protected]

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• ftp server monitoring

  - by Supra Man

  I need to monitor some ftp servers for any changes in file structure, things that I need to monitor is how many times an file is downloaded (not sure if possible), if files are changed or not, if files are deleted or not, if ftp server still exists, i would like this to be something that i can run server=side and would like a sms message or email if any of the above changes have occured any one have any experience or would recommend an particular language or script? thanks just for reference, i don't want to install an ftp server, i just want something to help me monitor other remote ftp servers by periodically logging in

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• Monitoring User Login time

  - by beakersoft

  Hi, i have recently been given the task of trying to work out why the login time (not machine boot time) for some of our users seems slow. The vast majority of clients (95%) are running on XP sp3, Windows 2003 domain controlers. Most users have the same model of machine. I would like to be able to see how long each of the polices are taking to load (if possable split user and computer) and any other info that might help (services starting etc) I changed the userenvdebuglevel reg option to generate the userenv.log file but it did'nt contain very much info Thanks Luke

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• Network and log monitoring and vulnerability scanning

  - by user137799

  I am trying to find out if there is any application or service in UNIX that will - 1. Monitor network interfaces for bandwidth usage 2. When network flaps occur send out a e-mail. 3. When duplicate mac-addresses or loop occurs in network - send out alerts. 4. Do a network vulnerability scan and be able to detect utorrent application on our network. Need to know which linux distribution will be best to support that specific application Thanks

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• There is any monitoring hosted solution?

  - by Jader Dias

  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 returning a expected result).

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• Nagios remote monitoring: NRPE Vs. SSH

  - by sam

  We use Nagios to monitor quite a few (~130) servers. We monitor CPU, Disk, RAM and a few other things on each server. I've always used SSH to run the remote commands, purely because it requires little to no additional config on the remote server, just install nagios-plugins, create the nagios user and add the SSH key, all of which I've automated into a shell script. I've never actually considered the performance implications of using SSH over NRPE. I'm not too bothered about the load hit on the Nagios server (It's probably over-speced for what it does, it's never been over 10% CPU), but we run each remote check every 30 seconds and each server has 5 different checks performed. I assume SSH requires more resources for each check but is there a huge difference? (I.E. enough of a difference to warrant the switch to NRPE). If it's any help, we monitor a mix of physical servers (Normally with 8, 12 or 16 physical cores) and Amazon EC2 medium/large instances.

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• Monitoring instantaneous network throughput at one second intervals?

  - by Shaddi

  For a testing setup I have, I need to monitor the throughput through a "router"* at regular intervals of around 5 seconds or less (sub-second intervals would be very nice, but not required). Ideally, I would be able to generate a file which contained both the number of bytes and packets seen during each interval. I will eventually be generating a time-series of throughput from this data. On a previous setup using an older version of FreeBSD, there was a tool called "bpfmon" which gave me this information. However, I need to do this under a modern version of Linux (namely, Ubuntu 11.04). I have looked at both iptraf and iftop, but these do not appear to provide the resolution I need, nor do they seem to easily allow scraping the data I need. I understand iptables statistics may be able to give me what I'm after, but the examples I've seen of this seem to rely on repeatedly reading and resetting traffic counters, which seems like it could give inaccurate as read/reset is not an atomic operation. I already capture a tcpdump trace of the traffic I'm interested in on the link I want to monitor, so I am open to approaches which simply parse that. I feel like this must be a common problem though, so I am hoping there will be a standard "best practice" tool for accomplishing this. *I say "router" in quotes because I am really talking about a machine with two bridged NICs through which all the traffic I'm interested in passes.

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• Monitoring apache's caching.

  - by Synchro

  I'm running mod_mem_cache with mod_cache, but I don't seem to have any way of telling whether images are served from the cache or not, so I can't tell how well it's working. Is there some way of seeing via mod_status, adding cache status headers to responses or similar? The servers it's on are quite happily handling sustained loads of about 200 requests/sec, but I can't tell if/how much the caching is helping that.

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• monitoring service to detect when email is not received

  - by DGM

  I would like to monitor an email server - not whether the port is open and receiving, but rather that a "canary" message sent every so often actually arrives somewhere else. I have had a problem with a server getting firewalled off and no one noticing that cron jobs are not coming from the machine for a few weeks. Of course, the machine itself cannot send out a notification if it is having problems, so this requires an outside service. Any ideas?

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• Looking for Hard Drive Health Monitoring software

  - by RandyMorris

  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 computers that could monitor hard drive health and give a warning if the drive looks like a failure is imminent. I have tried hdd health but it does not give me very useful information. I am not interested in drive space, just want a heads up before a drive failure. Anyone know anything like this?

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• Server monitoring service

  - by ro

  Is there a service that can monitor my web server and annoy me with phone calls (and or email) when it detects that its unresponsive to HTTP requests?

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

  - by Kyle Brandt

  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 really sure if each DC needs to be monitored, each NTDS connection, or each DC * Each NTDS connection. For the purposes of fitting into a standard alerting methodology, perfmon counters that would allow me to alert if replication was behind X minutes seems like it might be ideal.

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• ASP.Net Web Farm Monitoring

  - by cisellis

  I am looking for suggestions on doing some simple monitoring of an ASP.Net web farm as close to real-time as possible. The objectives of this question are to: Identify the best way to monitor several Windows Server production boxes during short (minutes long) period of ridiculous load Receive near-real-time feedback on a few key metrics about each box. These are simple metrics available via WMI such as CPU, Memory and Disk Paging. I am defining my time constraints as soon as possible with 120 seconds delayed being the absolute upper limit. Monitor whether any given box is up (with "up" being defined as responding web requests in a reasonable amount of time) Here are more details, things I've tried, etc. I am not interested in logging. We have logging solutions in place. I have looked at solutions such as ELMAH which don't provide much in the way of hardware monitoring and are not visible across an entire web farm. ASP.Net Health Monitoring is too broad, focuses too much on logging and is not acceptable for deep analysis. We are on Amazon Web Services and we have looked into CloudWatch. It looks great but messages in the forum indicate that the metrics are often a few minutes behind, with one thread citing 2 minutes as the absolute soonest you could expect to receive the feedback. This would be good to have for later analysis but does not help us real-time Stuff like JetBrains profiler is good for testing but again, not helpful during real-time monitoring. The closest out-of-box solution I've seen is Nagios which is free and appears to measure key indicators on any kind of box, including Windows. However, it appears to require a Linux box to run itself on and a good deal of manual configuration. I'd prefer to not spend my time mining config files and then be up a creek when it fails in production since Linux is not my main (or even secondary) environment. Are there any out-of-box solutions that I am missing? Obviously a windows-based solution that is easy to setup is ideal. I don't require many bells and whistles. In the absence of an out-of-box solution, it seems easy for me to write something simple to handle what I need. I've been thinking a simple client-server setup where the server requests a few WMI metrics from each client over http and sticks them in a database. We could then monitor the metrics via a query or a dashboard or something. If the client doesn't respond, it's effectively down. Any problems with this, best practices, or other ideas? Thanks for any help/feedback.

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