[ilugd] [Commercial] Linux Open Source Jobs Site Announced
We are launching a section of Muktware[1] called - Linux and Open Source Jobs. Under this section, you can search and apply for Linux and Open Source Jobs. If you are an employer or looking for full time employees, experts for contract-based projects, freshers and trainees, you can post job openings and find right candidates for your firm. If you are an engineering student looking for Jobs in the Linux and Open Source industry, you can search for appropriate jobs and apply with one click. The service is available for free of cost. Why to advertise your jobs with Muktware? Muktware has a massive reach in the global market, with a strong presence in India. So, your advertisements will reach out to a wider audience. Since Muktware is an web-magazine we reach out to those who are not aware of regional or Linux specific job sites. Thus Muktware's jobs site offers you a coverage wider than any jobs only site can offer. Its extremely easy to post jobs on Muktware. Just register with us and start posting jobs. Select Employer as the Account time during registration to be able to post jobs. [1] http://www.muktware.com/user [2] http://jobs.muktware.com/ [3] Register http://www.muktware.com/user If you have any query, please write to us at editor at muktware.com -- bSwapnil Bhartiya/bbr Editor: Muktware.combr Skype: No Way...its non-free. Looking for alternativesbr Facebook: http://facebook.com/mukwtarebr Twitter: http://twitter.com/muktware ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] Fork Bomb and User Limit: Some Serious Concerns.
On Wednesday 08 Jun 2011, Ankit Chaturvedi wrote: Is there a way we can tweak the ulimit - user limit for all users. http://www.linuxforums.org/forum/security/90836-user-limits-linux.h tml - wasn't so helpful. Try 'setrlimit' to set RLIMIT_NPROC to some agreeable value. NPROC is the number of processes a user can create. Limiting them will atleast leave you with enough resources to start a shell and kill the offending process (bash in this case). ulimit will not work if you don't have pam_limits module for your kernel (it's not built by default). Try loading pam_limits module manuallly and see if the limits in /etc/security/limits.conf are honored then. There is no definite solution to preventing a fork_bomb as such, but patches like this http://grsecurity.net/ may help you finding which user started the fork bomb, though it might be an overkill for single user systems. So will any of these solutions work when the user is logged in as root? In general, how are you going to prevent root from destroying your system? -- Raj -- Raj Mathurr...@kandalaya.org http://kandalaya.org/ GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F PsyTrance Chill: http://schizoid.in/ || It is the mind that moves ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] Fork Bomb and User Limit: Some Serious Concerns.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 (राज माथुर) writes: On Wednesday 08 Jun 2011, Ankit Chaturvedi wrote: Is there a way we can tweak the ulimit - user limit for all users. http://www.linuxforums.org/forum/security/90836-user-limits-linux.h tml - wasn't so helpful. Try 'setrlimit' to set RLIMIT_NPROC to some agreeable value. NPROC is the number of processes a user can create. Limiting them will atleast leave you with enough resources to start a shell and kill the offending process (bash in this case). ulimit will not work if you don't have pam_limits module for your kernel (it's not built by default). Try loading pam_limits module manuallly and see if the limits in /etc/security/limits.conf are honored then. There is no definite solution to preventing a fork_bomb as such, but patches like this http://grsecurity.net/ may help you finding which user started the fork bomb, though it might be an overkill for single user systems. So will any of these solutions work when the user is logged in as root? In general, how are you going to prevent root from destroying your system? % getent passwd root root:x:65535:65535:root:/root:/bin/sh Or, maybe SELinux :) - -- Ashish SHUKLA “UNIX is user-friendly, it just chooses its friends.” (Andreas Bogk) -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.17 (FreeBSD) iQIcBAEBCgAGBQJN7yWzAAoJEMdGz6nnT6Sw1K4P/jdPtb2Gp9QspdEY85lQCGpS yX+6V/tZnwNb/hb/FOWdeX0KDOrFh1FZl2Np21CkMlI/yWgRDpXQ6rgwo+CRWlLu u+O8j7E65LUs3/wtRRdw7kfU+OtagcfUXmUKbWU+yhnMIaFlvaVKRVOBTOj8H5q5 cnoOkyc27PAjC2WBAHlf7RMAZ9bEhpXufr100ZsFbpVuiHnAtG3xOE5Fc4BOPPQu ZQkwoEWk1Gb9RM8KeBPI8tfaC4StDtVEuxoKKPDbD92Rq7rd/Ce6VszfO1AOj3vh Aw9/gUAAoyYn0LUvApABLM4hLVYpsBQInBvMKrgoySha2Oj6vHR7HytUvxNoFx/4 ZA4xkZvgeUkDsCG2lbamWuzQMasxGm9lvFIokAOqDFyXZSRvb1AtnTYDkvzAhp8s P3G6kib9YyFNRbboG7hyrugZNMHJrRXK4DC2O4m48hhKjxrub6gAsnlBa50zufpv EZi82izHKwHQyQUIH/zxda8aQFbfg/pONzQb/rXfIuADqyW7j8uB9iM0sVvNUWEn XaY/AWPs0jrnMP2uL90FIjl+W6A8cIqmgrlur4NQN3Nf3l2vdSFTnuclvkCyvXST sjjt2V21j9hFCK3R+WLBVFnl7TcqGJMHZXKEpogEv38WzS9a2sUKlqZBaonbsdu+ KupDTWphaygPtFgSOn2M =FwOs -END PGP SIGNATURE- ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] Fork Bomb and User Limit: Some Serious Concerns.
2011/6/8 Raj Mathur (राज माथुर) r...@linux-delhi.org On Wednesday 08 Jun 2011, Ankit Chaturvedi wrote: Is there a way we can tweak the ulimit - user limit for all users. http://www.linuxforums.org/forum/security/90836-user-limits-linux.h tml - wasn't so helpful. Try 'setrlimit' to set RLIMIT_NPROC to some agreeable value. NPROC is the number of processes a user can create. Limiting them will atleast leave you with enough resources to start a shell and kill the offending process (bash in this case). ulimit will not work if you don't have pam_limits module for your kernel (it's not built by default). Try loading pam_limits module manuallly and see if the limits in /etc/security/limits.conf are honored then. There is no definite solution to preventing a fork_bomb as such, but patches like this http://grsecurity.net/ may help you finding which user started the fork bomb, though it might be an overkill for single user systems. So will any of these solutions work when the user is logged in as root? Yes, RLIMITS are enforced by the kernel so are applicable to all users including root. GrSec patches too add functionality to kernel so I assume it should be the same. In general, how are you going to prevent root from destroying your system? Via kernel based limits, SELinux etc. However, a root user can modify rlimits so there is very little one can do to prevent damage. SELinux/Grsec patches can prevent this to some extent through least privilege access control policies. In other words, don't hand out root account or sudoer priv to everyone. In Ubuntu, remove all regular users from sudoers and add them to a less privileged group, keeping a few power users in admin/root group. -- Raj -- Raj Mathurr...@kandalaya.org http://kandalaya.org/ GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F PsyTrance Chill: http://schizoid.in/ || It is the mind that moves ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd -- -- Ankit Chaturvedi GPG: 05DE FDC5 468B 7D9F 9F45 72F1 F7B9 9E16 ECA2 CC23 http://www.google.com/profiles/ankit.chaturvedi ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] Fork Bomb and User Limit: Some Serious Concerns.
2011/6/8 Ashish SHUKLA ashish...@lostca.se: [...] So will any of these solutions work when the user is logged in as root? In general, how are you going to prevent root from destroying your system? % getent passwd root root:x:65535:65535:root:/root:/bin/sh I was going to suggest the L33T toor user, but had refrained. Or, maybe SELinux :) Have never understood SELinux: Isn't there only one command: setenforce 0 Regards, Gora ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] [OffTopic] Preview of the new website
On 08/06/11 9:34 AM, Anupam Jain wrote: On Tue, Jun 7, 2011 at 2:25 PM, Shamail sham...@inbox.com mailto:sham...@inbox.com wrote: On 07/06/11 1:47 PM, Raj Mathur (राज माथुर) wrote: On Tuesday 07 Jun 2011, Shamail wrote: I've been working on a project from some time, http://tunesdiary.com Its now open for preview, please have a look at it and tell me the goods and the bads. Hope you like my work. Does this have anything to do with FOSS, even tangentially? Might be, site uses Django, python, jquery and more OSS libraries, runs on ubuntu server... (atleast powered by OSS) My apologies if you thought it was for marketing reasons.. Its not yet released even. How about making this atleast marginally FOSS related by telling us something about the technical details of the implementation, so that it will help others using FOSS for web development. What are the FOSS components you are using and why? Where is the site hosted, what are the memory / processor requirements, and would you recommend that host? How many people in your team? How much development time? What's the business model here? Anything else you might think is relevant :) -- Anupam Hi, Yes sure.. So this one is basically built completely upon free software. I being a fan of OSS opted for choosing things that minimize the cost. It uses Django with a lot of third-party supporting libraries (like boto, twitter, oauth, eyeD3, titlecase, pyquery, mad, PIL to name a few), primarily for all the controllers that you see.. A little into for newbies in Django: Dango is an MTV(Model, Template, Viewer) framework that lets you separate your business logic with HTML/CSS as well as the data models. Having said that, it follows DRY (Don't repeat yourself) principles. As a result, the complete python code for this site is under 2000 lines. For those familiar with rails, its pretty much like rails. (Check out: http://www.youtube.com/watch?v=PLUS00QrYWw ) My initial thoughts to cook this up were 2 only, rails or django. As I am quite much comfortable in python, the choice became obvious. Rails demanded one month before I can start the project on, though I was very curious to learn it.. (might be next time). They say, rails have a very vibrant community, but now I can very well say, Django is equally good. http://groups.google.com/group/django-users supported me a lot. Further I am using MySQL for the DB layer. I earlier planned MongoDB for this, but then I thought it'll fall under the category of premature optimization so dropped the plan. MySQL everyone know, for MongoDB (http://www.mongodb.org/): MongoDB is a no-sql database which offers features like auto-shrading, map/reduce, gridFS. Its very fast, supports replication, and good thing is, its free! If you want to use it with Django, you might want to consult pymongo (python driver for MongoDB) and mongoengine. A Django like ORM for Mongo. Definitely if you are looking forward to a good scalable solution right from the start, give a shot to Mongo, There might be something good waiting out there for you. I am using this in another project and very happy with it. Apart from this, other good nosql DB that you might want to try is Apache Cassendra which is Java based. But APIs are available for almost all the languages. For playing music and multimedia related stuff, the site uses a 1x1px FLEX applet hidden in the page. Flex is an open source SDK for building flash movies and better suited for development rather designing. I am running this currently on Joyent cloud (reason: they give you 10TB free bandwidth each month), because this is bandwidth hungry, I couldn't afford Amazon ($0.10 per GB). The system has 256MB of RAM, a processor giving me a performance of 1.5GHz single core kinda. So its very short in resources. So for this, I opted out of apache, switched to lighttpd, using Django over fastcgi running in multithreaded mode instead of prefork mode. The server uses Ubuntu 10.10 server (reason: I was most familiar with this, although they say, CentOS is a wiser choice for server, but ubuntu never let me down.) Guess what, its working for me and I am still expecting some real good traffic on this very server in $16. For those unaware: Lighttpd is a light-weight web server with very low memory footprint. It can serve almost all the frameworks under the hood, via FastCGI (Have found this good with Django, Rails and PHP) So for a server like above, you might want to try a benchmark with Lighty. One good thing about Lighty is that, its configuration file's grammar is very cool. Afa recommending a host is concerned, yes Joyent is giving me good performance. Choosing joyent was the matter of: * Cost, $16. * They accepted my Indian Bank master debit card for this :) - god knows how! Although, lately I got to know,
Re: [ilugd] Fork Bomb and User Limit: Some Serious Concerns.
Raj, Your approach is what I had in mind to distribute VMs to the interns. However they are supposed to take care of deploys on Lower Environment, and hence they some how obtain the root privilege. I guess I ll have to drive a sanity check for this once ! 2011/6/8 Gora Mohanty g...@mimirtech.com 2011/6/8 Ashish SHUKLA ashish...@lostca.se: [...] So will any of these solutions work when the user is logged in as root? In general, how are you going to prevent root from destroying your system? In general I dont want to tweak any of the root privileges, I still want root to do anything under the Sun. However Ankit's point is quite valid, fork bomb cam be prevented by setting a limit on number of processes by any user! I think I am gonna try that approach. Our other systems using BoKS successfully are able to limit users from executing certain commands. For example if I (as amarakshat) become root and want to change other user's password (eg, rajmathur), it wont allow. However In my department we do not have such software ! % getent passwd root root:x:65535:65535:root:/root:/bin/sh I was going to suggest the L33T toor user, but had refrained. Or, maybe SELinux :) Have never understood SELinux: Isn't there only one command: setenforce 0 Regards, Gora ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd -- Amar Akshat Wells Fargo Real Programmers always confuse Christmas and Halloween because Oct31 == Dec25. ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] [Ilugc] [Commercial] Linux Open Source Jobs Site Announced
On Wed, Jun 8, 2011 at 12:25 PM, Swapnil Bhartiya swapnil.bhart...@gmail.com wrote: We are launching a section of Muktware[1] called - Linux and Open Source Jobs. Under this section, you can search and apply for Linux and Open Source Jobs. If you are an employer or looking for full time employees, experts for contract-based projects, freshers and trainees, you can post job openings and find right candidates for your firm. If you are an engineering student looking for Jobs in the Linux and Open Source industry, you can search for appropriate jobs and apply with one click. The service is available for free of cost. You can also redirect to fossjobs.in !! ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
[ilugd] Trying to install webcam
Distro: Fedora 14 -- 2.6.35.13-91.fc14.i686 Webcam : Quantum 14 MP Night Vision To install on linux, the CD has source code on the first step, it asks to *run* *make* * * the output is like: [root@kapil uvcvideo_cur]# make Building USB Video Class driver... make[1]: Entering directory `/usr/src/kernels/2.6.35.13-91.fc14.i686' make[1]: *** No rule to make target `driver/uvcvideo_cur'. Stop. make[1]: Leaving directory `/usr/src/kernels/2.6.35.13-91.fc14.i686' make: *** [uvcvideo] Error 2 Any what to do? Regards Kapil ~ ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
Re: [ilugd] Trying to install webcam
From: Kapil Gupta navka...@gmail.com To: ilugd@lists.linux-delhi.org Sent: Thursday, 9 June 2011 8:18 AM Subject: [ilugd] Trying to install webcam Any what to do? Check if you've done the following :- a) Copy the source tree from CD to your home directory (or some similar place;) b) run the configure script (./configure typically should setup the development environment for the compiler/linker etc) c) if no errors, type `make` else install dependencies that configure complained about d) if no errors, type `make install` e) if you get errors now, then you need to contact the developer(s)/dive deeper/trawl the support forum for the solution With Warm Regards, Shivkumar twitter: shiv_jags linkedin: shivjags blog: outbackwifi.blogspot.com ___ Ilugd mailing list Ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd
