Server :: Tools For Monitoring Disk Io & Io Wait Times
Mar 29, 2010
I have a scenario where I want to monitor at disk performance (cpu and memory also if possible) on a RHEL 5 server functioning as a NAS. I have several machines that backup content to this server via scheduled cronjobs and I'm curious to see if the machine is hitting a bottleneck under load.I attempted to setup cacti on one of our LAMP servers and had a miserable time due to running PHP 5.3 and deprecated function issues.Can anyone recommend an alternative keeping in mind I have only very basic experience with SNMP?
I am looking for some monitoring tools (such as disk usage,memory usage, cpu,etc) for my linux machines. I came across two tools, cacti and splunk.Which one is better ? It will be nice if you can also let me know the reason.
We have few servers and we need to monitor mysql and ping (port 80) on our servers to send us email notification and also we need sms notification when something is wrong, we can ask our developer to write sms notification (which is very important for us) because we already have the API and only need a output from a good monitoring tools to show to our developer and ask him to write the notification program.
Our primary sever is centos with WHM installation and hosts about 600 websites.(need to monitor mysql & port 80 on this.)The secondary one is windows server with virtuzzu installation and host about 15 windows VPS (The server crashing some times and we need to findout its out of service ASAP .)Should we use monitoring websites such as hypersins.com or siteuptime.com (which is a little expensive for us especially because of international sms rates.) or there is nice tools we can easily configure and use !
i had configured disk alert and getting javamal alert for node down events but still im facing issue in getting disk space alert im following these below link [URL] im using foollowinglink for conf datacollection-config-xmlfile
dear can someone highly gui or text base/command line tool that use as "isp bandwidth monitoring tools in linux".i do have leased line,frame relay, wireless linke,dsl too. i want to monitor what is uploading and downloading.
I just need to ask about any existing tool in linux which can show us the CPU memory and swap utilizations of overall system for particular time duration and generate graphs.?i m a student of computer science and want this information of resource utilization for my project..kindly reply if any of u liux fans knows about such tools.
System activity monitoring tools - top, iotop, ntop, sar, collectl, etc - may be a good reference to judge the system activity when the system transitions to sleep state.But if I make the system transition to sleep state when i/o activity is zero during 15 minutes, for example, it won't sleep forever because slight i/o by daemons, etc occurs continuously even if no user i/o.So how can I judge the system activity to change the state by using those tools?
I am currently running a 64-bit Fedora 14 server which hosts a game server, a voice server, and remote desktop functionality, each on a distinct TCP port. I am currently using the built-in firewall to deny all traffic other than ICMP ping/pong and TCP traffic on those specific ports.I am looking for a graphical application which will let me monitor any connections being made to my server in order to keep an eye out for possible security concerns. To be more specific, I'd like to be able to see the source IP addresses, TCP/UDP ports, and individual bandwidth in use by external connections being made to the server, along with any other information that might be helpful in identifying a possible intrusion attempt.
I have a third party program (tightvnc) which I want to monitor and detect if it loses a connection with a client. I don't care if the client has the program open but isn't doing anything with it, I only want to know if the actual TCP connection is lost.
Since TCP takes forever to die on it's own I was thinking the best way to detect if a connection is lost is by bandwidth the bandwidth on the tcp port allocated to the VNC connection. Are there any tools built in to redhat (RHEL 5.2) which I could use to do this? Since I don't have full control of the operating system I would prefer to use built in tools rather then trying to get a new tool installed.
I am running CentOS with single hard-disk (no RAID). I frequently saw people lost data because of hard-disk damage or failure.I am wondering if there is a software for monitoring the hard-disk so that we would know in advance and do the backup because thing goes wrong.
Quote: The importance of security should never be underestimated. The consequences of losing data can be disastrous for any organisation. For example, the loss of a single unencrypted laptop may have huge repercussions. This could include breaching data protection legislation with the risk of a significant fine, a loss in the confidence of an organisation, as well as the risk that sensitive data may fall into the hands of a competitor or third party with malicious intent.
I'm running home server on Debian stable with DHCP, DNS, Mail, VDR, Filesharing and my Weatherstation as main services. The filesharing is used to mount homes at clients. The machine features an Athlon BE-2300, 3GB RAM, GB-LAN, 1TB and 1.5TB SATA HDD plus HDDs for backups. Mainboard has an NVIDIA chipset with
Code: nVidia Corporation MCP65 SATA Controller (rev a3) The primary disks are running in RAID1 + LVM.
I am just wondering if there are any tools for checking the life of the hard disk. I had my hard disk for 4 years. And now I think it is having some problems.Is there any tools I can use to check the condition of the hard disk?
currently my disk-space is growing very-very fast and in the same time I have a very limited amount of it.Last time I had this kind of problem, I had MySql persistence replication is on and disabling the feature fix the problem. I don't know what happened between now and then, the space is shrinking rapidly (600Meg in couple of days) and I only downloaded files for less than 10Meg in the same period.
Could anybody give me a pointer to a tool that can oversee growing directories or files or maybe a script that able to do this (possibly involving Cron). I try using "Find" but I cannot find any files that are suspiciously growing. I suspect it's a directory that is growing, but I don't know.
My DVD drive has gone bad and with new Fedora 14 just launched I decided to install the same through the usb flash disk.
First I used dd: dd if=/home/prabhat/Download/Fedora-14-i386.iso of=/dev/sdb
It went on nicely and copied the iso nicely. But I could not boot with it.
Second time I tried livecd-tools: livecd-iso-to-disk /home/prabhat/Download/Fedora-14-i386.iso /dev/sdb1
It went on nicely, and finally declared something like - usb disk is not live .... But here again when I tried to boot it says MISSING OS. I checked the contents of the flash disk. It contained raw DVD iso image, one images directory, one syslinux directory. I checked the contents of the images directory, and I found it had the install.img. And yes, the /dev/sdb1 is bootable.
I work as a part-time consultant developing webpages, both back end and front end.When developing a back end application I'm using a server running ubuntu server edition to host the application while I'm developing it.The problem comes when I want to upload my changes to the server, now I'm using Dropbox both on the client and the server, the problem is that sometimes I have to wait over a minute for the changes to be downloaded (when I'm working out-of-home that is) so I'm looking for a better alternative. My options seems to be:Some open source version of dropbox which syncs directly to my server (haven't found anyting that sounds viable though)
Mount my server via some protocol (NFS, SSHFS etc)
Push changes manually via FTP, git, svn or something else
I'd like the sync to be as transparent as possible, meaning I'd like to do as little manual work as possible.The client I'd like to connect runs either OSX or Ubuntu.The ultimate solution would be to use NFS + VPN though that would be alot of work to set up and also I don't like the security in NFS (matching UID's doesn't seem very secure to me)
I'm building a simple(?) socket server using threads to serve up a few requests. The spec is such that I have to listen to three ports at once, so I decided to use pthread to create three separate threads that would wait for connections, then spawn new threads to handle them.
The problem is that when I do this, for some reason the program never enters the wait loop and instead terminates (All three threads did get created since the messages get printed properly.) It gets to the line which prints "???", but not the line after the accept() call.I don't see an open port when I check for one either so I'm 99% sure they're terminating.Basically I have a main() method which has three calls to pthread_create, which should result in three threads being run that all wait for connections (listenOnPort). After each thread creation I print some info to make sure it's actually being created.
By the way, when I just run listenOnPortwithout threading, the server appears to enter the loop correctly and seems to be waiting for requests. It's only when I run the functions as threads that the problem seems to happen.The source is attached below. Any help will be appreciated. Much of the code is borrowed from a website (I can't post it because I am new here.) You need not worry about the handler_ methods because those are just methods that are run by the threads themselves.
Also--the original source was in C and I changed it to C++. Should I just use C? server.h Code: /* * server.h
I used to have a log file monitoring script on my server but after an auto update recently it seems to have disapperaed.Can anyone think of some log file analyzers that send outputs of ssh, amount of disk space used etc. as I cannot remember the name of the program at all.
I want to monitor RDS (mysql database of EC2) using Nagios. In command line ( I am able to do it but I dont know how to feed it in nagios . On nagios server if I execute the following command , I am able to fetch the information of database (RDS)
I wanted to know how can I cross compile SMS SERVER TOOL for an embedded computer and make just one binary file for it or how can I change all of its default files places like its demon and object file and gather all of them to one directory to execute and use and run.let me explain it better for you : I have an embedded computer with Linux OS that its file system is read only and I can not add any file to /usr /lib and ..... and I can just mount a SD memory card to it and copy all of my programs to it and run them from there as you understand I have two choices to choose, first make one big binary file for each program that I am doing it now and it is not a suitable solution and the second is finding the way to change default place of shared object file of my program.now you tell me what can I do to solving this problem.
This package contains tools to manage Debian based XEN virtual servers.
Using the scripts you can easily create fully configured Xen guest domains (domU) which can be listed, updated, or copied easily.
Homepage: [url] in the above output I am getting a line Conffiles and then you can see a series of /etc what are that and is it an error or some conflict?
I was looking for some software to run on my Debian vServer which monitors RAM, CPU and HDD usage. This tool should not require Gnome/KDE, so I guess I'll end up with a PHP tool. I did some search but came up with nothing. I'm using Parallels Power Panel (there might be a plugin or something like that?)
