if i am having say 10 number of linux machine over the network and want to setup password free SSH in round robin fashion means ssh from any machine to either machine. one way to do is generate the public key on every machine and put on other machine. is there any other shorter and simple way to do it?
View 5 RepliesDoes anyone know how to run 2 threads with round robin scheduling. & can we get the time of these threads when they are context switching. That means I want to know at how much time each thread is taking to run
View 3 Replies View RelatedI'm trying to configure my Red Hat server to use port bonding for two interfaces going to a switch, and I followed this redhat guide [URL]...-redhat-server but when I attempt to bring the bond up, it simply uses mode 0 (round robin) instead of mode 1, which I specifically configured in /etc/modprobe.conf by doing
Code:
options bond0 mode=1
Any ideas why the bond would continue to use round robin when I set it to active-backup?
Here is the senario...
2 round robin dns servers
x.x.x.1 mydomain.com (hostname)
x.x.x.2 mydomain.com (hostname)
My problem is that when I try and send an email that is part of the domain, it ends up trying to deliver it locally. I realize it is supposed to, but I don't want that for non-users of the server.
I want to be able to deliver certain emails []@mydomain.com remotely. (info@mydomain.com)
exim4 setup "internet site; mail is sent and received directly using SMTP". This works well as long as it is not an email from mydomain.com.
Is there a way to have exim check the users first and then deliver based on local user or not?
Next question. Is having the domain name as the hostname the best way to setup a round robin? (web server)
So we have DNS round robin set up for 4 servers. If we ping dns name (basically an alias) server_connect it resolves with different IP address in round robin format. I.E. x.x.x.1 x.x.x.2 for the 4 different server IP addresses. When we do nslookup server_connect it will come back first time as server1_connect server2_connect through server4_connect so the server is able to resolve through ping and nslookup resolving the initial dns name (alias) to the dns name associated in the round robin. Problem is when we try to connect with http or telnet it comes back host unrecognized. I can put one of the 4 round robin servers in /etc/hosts and it connects fine so I'm thinking that either one of three things.
1) ttl
2) It does double connection first to identify itself to the round robin server and then handshake but second time it hits for the handshake the IP and dns name is different than what it expected so it fails.
3) Since we are trying to telnet to dns alias and it is returning different dns name it fails.
2 and 3 seem most promising but now I'm at a stand still.Anyone else come across this issue and if so how did you resolve.
we use round robin DNS service for setting up a high availability solution ? i want to know whether it will work.
View 1 Replies View RelatedThe command: Code: ls -lRt Shows a recusrive listing, and sorts by modification time. But this in in tree fashion, where it first lists the contents of the current folder sorted by time, and then the contents of each child folder sorted by time. How would one accomplish this type of sort, but with an aggregate listing - all items recursively sorted together, rather than by individual folder?
View 3 Replies View RelatedI have two (or more) video files that I want to play side by side. I could do that simply by opening them in two seperate windows, but that would also seperate all the controls (play/pause/forward/...). I want to play them in a synchronized fashion so that pause/forwarding/... works on both videos simultaneously so that they always stay at the same timecode and they don't go out of sync. How would I accomplish that in Linux?
This is needed for viewing only, so compositing them into a new video file first should be avoided if possible, but if there isn't an easy way to do that, I welcome answers doing it with composition as well.
I want to use awk to list all the mount points, disk size and space available. Now I have all that info but I want to round the totals, so there is no delimiters, how can I do that?
PHP Code:
#!/bin/sh
date
df=`df -Pl | grep "^/dev" | awk '{print $6, $2/1024 , $4/1024}' | sed "s/%//"`
echo "$df"
[Code]...
I have a large amout of data (several GB) on a remote drive, that is transparently mounted via nfs. I'd like to copy these files into a subdirectory of where they are already residing, so everything stays on the same physical disk. For that reason, I would like to prevent an unnecessary round trip over the network.
It seems that cp files* subdir does the naive thing and reads all the data into memory and then writes it back. Is that true? Is there a special command that does the actual copying entirely on the server the disk is physically connected to?
The last round of updates to 10.04 changed the initrd image, which I wasn't expecting. How do I check the updates to make sure that this is in fact the expected behavior? I.e., how do I go back and check which updates were supposed to have been installed, check what was actually installed, and see which one modified the initrd and why?
View 4 Replies View RelatedI have been trying to install on my toshiba satellite c655 laptop the ubuntu operating system. Anytime it gets to where i can use it as a live DVD and I would want to install, it gets to stage 3 of 7 and gets stuck. No error messages are given, the install dialog can be minimized and other task done but the installation will never continue. Anyone with idea about how to go round it.
View 3 Replies View RelatedI have a dualboot system with Debian, how can I make both systems read and write ALL files on the computer?openSUSE can't open the Debian's HDD and the other way round.. how can I change that?
View 9 Replies View RelatedThe buttons on the left of the windows of Ubuntu 10.04 are square and not round?
View 1 Replies View RelatedCan anyone recommend a good all round flatbed scanner, (for 11.3)?Main use would be for document scanning, but should be able to cope with photos occasionally.
View 3 Replies View Relatednotice that the shutdown icon is not really round(on the upper right corner)? Have they fixed this one yet?
View 4 Replies View RelatedIs there any tools in linux same as "http-ping. This tool shows for any request :
1-The HTTP return code (and its brief textual description)
2-The number of bytes returned by the server (excluding headers)
3-The time taken to complete the request (i.e. round-trip time)
My Ubuntu system is occasionally becoming very sluggish. I'm running many things simultaneously and it's very difficult to tell which program is the culprit.
I suspect that the sluggishness is due to disk activity since the CPU usage is consistently under 50% on each of the 4 cores of the CPU, and over 30% of the 6GB of RAM are free.
Is there a tool that can show me in real time the number of disk IO operations per second and the amount of data read/written per second? Can all this info be broken down and displayed per process?
I want to write a shell script, so that at 9AM every morning a general will be sent automatically to my network users E-Mail ID. My users are as follows: akhtaruzzaman@a[URL], ariful.[URL] etc.
Below is my little effort:
# !/bin/bash
userlist=`cut -f 1 -d : /etc/passwd`
mail -s "mailbackup" << END
keep mailbackup in another drive daily for security purpose
I'm using my Linux (SLES 10) server as a File Server at this point. I need to set File Permissions to nested folders differently to different groups. For example:
homesharedengineering* should be read only for groupA
homesharedengineeringadmin should be read & write for groupB Plus read only for groupA
homesharedengineeringautocad should be read & write for groupC Plus read only for groupA
I've been using Webmin and Putty to set permissions but Putty only allows me the Default Group, it won't allow me to set several groups on the same directory. Webmin seems to allow me to add multiple groups (Webmin --> Others --> File Manager --> Info & ACL tab will provide extended abilities) but when I add multiple groups, they don't seem to take effect? I'm wondering if my setup at the 'Share' level or at the hierarchy of my folder structure (unix based) needs to be set specifically?
I have Windows 7 on my Dell Xps laptop, and I want to install Ubuntu or Fedora as a dual-boot. Will that cause my system to slow down?
View 2 Replies View RelatedPackageKit is a system designed to make installing and updating software on your computer easier. The primary design goal is to unify all the software graphical tools used in different distributions, and use some of the latest technology like PolicyKit to make the process suck less.
View 1 Replies View RelatedII'm a front-end web developer, I've always developed on Windows with technologies like XHTML, CSS, Javascript and Flash, I've dabbled with PHP and MySQL. I am well used to Windows workflows and tools, from Photoshop to Notepad++, Filezilla and WAMP server stacks to After Effects, and a swathe more - but always on Windows.I'm at a point where I think I need to start seriously developing on a Linux box, specifically at the moment to create web apps based on Node.js, but compiling tools and programs has become a task I'm more frequently required to do.
My question? I need to get my hands on a user-friendly install of Linux, but which one? I need common interface developer tools (lists welcome) to replace... well as many tools I have on Windows as possible.I need to be readily connected to the internet, I need OS updates to not destroy my workflow by crashing the OS, as I've seen Ubuntu do to various friends. I want efficiency, I need to be able to customise what I need to in order to perform development tasks.I guess this could be a long list, but - I don't have practical working knowledge of the Linux OS, nor how it "compares" to Windows (excuse my faux pas). I'm obviously willing to learn, but I'm far, far more keen to just... continue interface development, just on Linux instead of Windows.
A friend of mine helped me set up a server which includes Squirrel Mail.It?s CentOS 5.3.I have a person who would like to access Squirrel Mail at remote sites.My questions is, I can create an account on the server which has KDE and the usual general applications and he would have the remote access Squirrel Mail but he doesn?t need nor does he want to access KDE or anything else on my server. He just want an account so he can use Squirrel Mail.
View 1 Replies View RelatedI have the impression that not that many people understand the scope and limitations of GNU General Public License. This is somehow my basic understanding of it. If I take a program covered under the GNU license, first of all I have the right to get the source code. Second, I can modify it at will. Third, I can redistribute it as will too but the new code will necessarily will have the same GNU license. This made me wonder how people actually can charge for software derived from Linux, for instance, Red Hat. Well, my impression is that they really make profit only out of services. In this thread [URL] I think I found a lot of confusion, even from a moderator (not intended to offend). Red Hat is based on Linux and it is necessarily covered under GNU. Somebody probably bought the program from RHE and can make it available at no cost.
Nevertheless, the moderator decided to warn the user. In this article [URL] it says the following:"Our training is not designed to promote vendor lock-in. Though these courses are based on Red Hat Enterprise Linux, the source code for [RHEL] is available to the community via the GPL [GNU General Public License]," said Red Hat spokewoman Leigh Day. This thread [URL] shows yet more confused people. Is there is a glitch in this type of license that prevents programs like RHEL to be redistributed for free? Why their license page doesn't mention GNU license? Or the problem is just that people get overwhelmed by this license and are afraid to be penalized and get paralyzed? By the way, RHEL is just the example. The key question is about the license!!
I need to allow certain users (who do not have root access) to be able to stop and start specific daemons
View 2 Replies View RelatedWhat is the general opinion of the Mandriva and Debian distros? Mainly asking what kind of user you consider the distro to be for (beginners, advanced, total newb, whatever), and whether you think they offer as much to an extremely experienced user as they would to a newb.Those are my two favorite distros, and I really like Mandriva a lot. I'm trying to pick one to stick with throughout, but I'm not really sure if Mandriva is too automated and Windows-user oriented like Ubuntu (I haven't really delved into the deeper aspects of Linux so I have zero experience in this area now). This might sound a little elitist but I don't want to be using Mandriva and just be automatically dismissed as a newb on first impression just because I'm using Mandriva (although admittedly I am a bit of a newb at the moment, I don't plan on staying one).
View 4 Replies View RelatedIm trying to get a general understanding put simply.
View 6 Replies View RelatedFriends i am facing some issue with Linux i want to know how many kinds of file do we have in Linux and what are soft link and hard link mean and the difference. However i want to know also why do we use it in Linux
View 1 Replies View RelatedI have a computer on LAN running ssh. I can normally tunnel the GUI application usingssh computer-name -X program-nameBut I wam my full desktop to be running on a remote computer using ssh so that I can just use that computer remotely like a local desktop. For this I think I will need to run KDM (or GDM ) remotely, what configuration do I need to do to make this happen?
View 2 Replies View Related