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| G__81 | hello everyone. Let me introduce myself.This is Balaji from India and i live in chennai. I am a software developer and i work for a telecommunication company | 12:16 |
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| dash123 | btw: please don't find it rude if i turn offline in another 45 mins cause my hostel lan will be out from 11:00 utc to 13:30 UTC...i'll be sure to read the logs | 12:16 |
| l0nwlf_ | G__81: we'r waiting | 12:16 |
| G__81 | I work on building software for routers and switches basically into protocol development. that's about me | 12:16 |
| G__81 | l0nwlf_, i am just giving an introduction about myself :) | 12:17 |
| spevack | G__81: carry on :) | 12:17 |
| G__81 | ok today we are gonna discuss about setting up a virtual router environment in fedora | 12:17 |
| dash123 | fire away....me too from T.N | 12:17 |
| spevack | introductions are very useful :) | 12:17 |
| * spevack is quiet now | 12:18 | |
| ... signoff!#fedora-classroom -> neverho0d(Read error: 110 (Connection timed out)) | 12:18 | |
| ... join!#fedora-classroom -> rockydd(n=rocky@114.92.162.89) | 12:18 | |
| G__81 | ok whats a virtual router environment. Its an environment through which you could test your router software. when i say router software it could be your module which runs on Linux | 12:18 |
| ... join!#fedora-classroom -> _darkstar(n=L3thal@39.32.177.41-get-oneprice-adsl-for-only-R169.cybersmart.co.za) | 12:18 | |
| ... join!#fedora-classroom -> neverho0d(n=psv@vpn-pool-78-139-211-149.tomtel.ru) | 12:19 | |
| _darkstar | hello | 12:19 |
| G__81 | It could also be that you have modified your Linux kernel or added functionality to your Linux kernel which would do routing or switching of IP Packets. | 12:19 |
| _darkstar | how long till classes start :? | 12:19 |
| G__81 | _darkstar, just started | 12:19 |
| _darkstar | awesome :) | 12:19 |
| ... leave!#fedora-classroom -> SteelSide("oops wrong class :x") | 12:19 | |
| G__81 | now we rre going to convert our machine into many nodes within much we could do packet routing | 12:20 |
| l0nwlf_ | router software ..what's the difference between the hardware router and this one conceptually ? | 12:20 |
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| G__81 | yeah good question. | 12:20 |
| G__81 | generally you have 2 planes one you have the control plane and the other data plane | 12:21 |
| ... signoff!#fedora-classroom -> qwp0`(Read error: 113 (No route to host)) | 12:21 | |
| G__81 | now when i say router software. It could be in 2 places it could be in your data plane as well as in control plane | 12:21 |
| G__81 | the control plane basically runs some protocols which could be termed as router software | 12:21 |
| G__81 | this is the software part of it | 12:22 |
| G__81 | now lets say you have Linux kernel running and you have a network processor. example (Wintegra) and you could program this Network Processor to do packet routing | 12:22 |
| G__81 | this is the hardware | 12:23 |
| ... join!#fedora-classroom -> ixs(i=andreas@lacht.ueber.gattinnen-im-netz.de) | 12:23 | |
| jcapel | protocols like bgp or ospf? or other kind of protocols? | 12:23 |
| G__81 | so here the software does not come into picture and since you program it in the hardware, the packet switching and routing is gonna be extremely fast | 12:23 |
| G__81 | jcapel, exactly | 12:23 |
| G__81 | it could be bgp, ospf,rip etc | 12:23 |
| G__81 | today we are gonna look into how to setup this environment using User Mode Linux | 12:24 |
| G__81 | in Fedora | 12:24 |
| ... signoff!#fedora-classroom -> _darkstar(Read error: 104 (Connection reset by peer)) | 12:24 | |
| G__81 | User Mode Linux could be termed as a way throuh which different Nodes are simulated and there by creating a virtual network environment | 12:24 |
| G__81 | any questions till now ? | 12:25 |
| l0nwlf_ | well I've one question but it's kind of off-topic | 12:25 |
| G__81 | off-topic ? | 12:25 |
| l0nwlf_ | well then , on a financial basis hardware routers should become extinct if software routers can make things do : why do they exist ? | 12:25 |
| G__81 | l0nwlf_, its something like this it depends on the place you deploy the routers. If you have a Linux box running fedora and you deploy it in a place where you dont have too much of traffic you could get along but just imagine you place it in a place where you have extreme load | 12:27 |
| ... join!#fedora-classroom -> mxcarron(n=maxime@fedora/Pingoomax) | 12:27 | |
| l0nwlf_ | yeah , understood | 12:27 |
| dash123 | g__81: can we say we'll be basically trying to emulate the router through our computer?? | 12:27 |
| G__81 | and morever if you take big networks customers would always love to have scalability . For example :: some routers allow plugging in network cards which have network processors through which your routers reach gets more and your router becomes scalable | 12:28 |
| G__81 | dash123, yeah | 12:28 |
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| l0nwlf_ | dash123: I think so | 12:28 |
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| G__81 | dash123, routers can be visualized as computers running an OS with some more intelligence and this intelligence is given to it using routing protocols like BGP,OSPF | 12:29 |
| G__81 | addition to it if you want to make your computer running Fedora Linux as a router , you could download quagga and set it up and it becomes a router | 12:30 |
| G__81 | now lets now get into a little deeper | 12:30 |
| dash123 | ok | 12:30 |
| G__81 | to setup an User Mode Linux environment you would need the following, | 12:30 |
| G__81 | you need a kernel and you need a file system | 12:31 |
| G__81 | ok now let us zoom into the first part of the sentence | 12:31 |
| ... join!#fedora-classroom -> rwmjones_(n=rwmjones@87.127.66.208) | 12:32 | |
| G__81 | the kernel: kernel could be a vanilla kernel which could be downloaded from kernel.org and it could be built for User Mode Linux | 12:32 |
| G__81 | or you could download a prebuilt UML kernel | 12:32 |
| G__81 | now lets zoom into the second part of the sentence. | 12:32 |
| G__81 | The File system: The file system is needed because when the kernel boots generally in a system, it would need a root files system and hence we provide the same for User Mode Linux too. | 12:33 |
| G__81 | The file system could be either built on our own which could be highly customized or it could be downloaded from the internet too | 12:33 |
| G__81 | Now why at all is a file system built generally is the question to be asked | 12:34 |
| ... signoff!#fedora-classroom -> Jgouldie("Leaving") | 12:34 | |
| l0nwlf_ | G__81: In my case I have Fedora-10 , kernel : 2.6.27 , I think I do not need anything seperate regarding the kernel but about File system I think I had created it during Installation phase | 12:34 |
| l0nwlf_ | why File system : because in linux everything is treated as a files | 12:35 |
| G__81 | lets say we are going to put Linux in an embedded device where in the space is going to be very less. what we got to do here is we need to build the file system in such a way that it takes very less space | 12:35 |
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| G__81 | l0nwlf_, you would still need a kernel because the kernel that F-10 comes with is built for your system architecture i386 or 64 bit | 12:36 |
| G__81 | but we need to build the kernel specifically for User Mode Linux architecture. | 12:36 |
| l0nwlf_ | ok | 12:37 |
| ... signoff!#fedora-classroom -> dash123("http://www.mibbit.com ajax IRC Client") | 12:37 | |
| G__81 | this is a constraint when we are using User Mode Linux but if we are going to use qemu an other emulation tool, its not mandatory that you need to build a separate kernel because all qemu looks for is a kernel image | 12:37 |
| G__81 | got it ? | 12:37 |
| G__81 | can i move ahead ? | 12:37 |
| l0nwlf_ | yeah | 12:38 |
| cwickert | yes | 12:38 |
| G__81 | ok now | 12:38 |
| G__81 | now lets say we want to set it up | 12:38 |
| ... join!#fedora-classroom -> dash123(i=dce36163@gateway/web/ajax/mibbit.com/x-7b2f24a1a73da868) | 12:38 | |
| G__81 | what we need to do is download a version of kernel from kernel.org and compile it for User Mode Linux | 12:39 |
| G__81 | now how do we compile a kernel for User Mode Linux | 12:39 |
| G__81 | when you compile a kernel for User Mode Linux, you get a binary file instead of a kernel image, this file could be executed just like executing a ./a.out file | 12:40 |
| jcapel | is this step mandatory? I take it there are no packages in Fedora for this then? | 12:40 |
| l0nwlf_ | G__81: well what I downloaded now is a patch 2.6.29.bz2 :( | 12:40 |
| G__81 | jcapel, you dont need any packages its only the kernel | 12:41 |
| G__81 | that we need | 12:41 |
| jcapel | I mean a package containing a UML compiled kernel :) | 12:41 |
| l0nwlf_ | Do I need to download the new kernel 2.6.29 or 2.6.27(my architecture specific) | 12:41 |
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| G__81 | jcapel, fedora as far as i know has not packaged User Mode Linux in its repo but i would advice you to download the kernel source so that you get to know how its done :) | 12:42 |
| jcapel | ok! :) | 12:42 |
| G__81 | l0nwlf_, you could download any kernel source. the kernel sources are not architecture dependent | 12:42 |
| G__81 | its the way its built makes it architecture dependent | 12:42 |
| G__81 | got it ? | 12:42 |
| G__81 | can i proceed ? | 12:43 |
| l0nwlf_ | yeah | 12:43 |
| jcapel | yes | 12:43 |
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| G__81 | and if there are any questions for which i dont know any answer i shall send it by email :) | 12:43 |
| G__81 | so forgive me on that :) | 12:43 |
| G__81 | ok lets proceed | 12:43 |
| G__81 | now once the kernel is downloaded | 12:44 |
| G__81 | you need to untar the kernel source | 12:44 |
| G__81 | first | 12:44 |
| G__81 | and once is unzipped, get into the kernel source directory and issue the following command | 12:44 |
| G__81 | make menuconfig ARCH=um | 12:44 |
| G__81 | what does this mean | 12:45 |
| dash123 | user mode i guess? | 12:45 |
| G__81 | this means that you are going to configure the kernel specifically for User Mode Linux | 12:45 |
| G__81 | yeah dash123 right :) | 12:45 |
| l0nwlf_ | is um like a keyword just mile m32 | 12:45 |
| G__81 | Tip: this is the way to configure a kernel for an other architecture and do a cross compilation from there on | 12:45 |
| l0nwlf_ | s/mile/like/ | 12:46 |
| G__81 | its a keyword | 12:46 |
| _darkstar | question | 12:46 |
| G__81 | and hence it has to be case sensitive | 12:46 |
| _darkstar | oops wrong place | 12:46 |
| G__81 | and if you forget to give ARCH=um it means that you are configuring it for your architecture which could be i386/686/AMD | 12:47 |
| G__81 | got it? | 12:47 |
| G__81 | _darkstar, whats the question | 12:47 |
| G__81 | ok let me proceed | 12:47 |
| G__81 | now once this step is done | 12:48 |
| ... signoff!#fedora-classroom -> huiser("leaving") | 12:48 | |
| G__81 | you would get a window in the terminal | 12:48 |
| G__81 | with the kernel options | 12:48 |
| _darkstar | it doesnt concern this topic sorry :) | 12:48 |
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| G__81 | now those are the options that the kernel presents to you in this user mode linux architecture. so if you want to really play with the kernel in trying to know what would happen if i remove a particular option or if i add a particular option, this is the place to try it | 12:49 |
| l0nwlf_ | wowww...I had always wished to , never tried yet | 12:50 |
| G__81 | now you need to save the configuration that you have made when you have make ARCH=um even if you have not changed anything in the window you need to save the config. | 12:50 |
| G__81 | how do you save the config ? | 12:50 |
| G__81 | you could see 3 buttons | 12:51 |
| G__81 | select, exit and help | 12:51 |
| jcapel | it should ask when you exit, iirc | 12:51 |
| G__81 | jcapel, it doent do that if you have not altered even a single option | 12:51 |
| G__81 | so what you need to do is click on the save an alternate configuration file option | 12:52 |
| G__81 | once you click that it shows a window where it shows .config just leave that and press OK | 12:52 |
| G__81 | it means your config file is saved | 12:52 |
| G__81 | now if you are really curious to know what does a kernel config file contain just do a cat of .config | 12:53 |
| G__81 | cat .config and you would see the options | 12:53 |
| dash123 | you did select-> save an alternate configuration file->ok | 12:53 |
| dash123 | ? | 12:53 |
| G__81 | yeah | 12:53 |
| dash123 | ok | 12:53 |
| G__81 | correct | 12:53 |
| G__81 | these options are very important and here is where a distribution place an important role in setting up the system | 12:54 |
| G__81 | compiling whats needed and not compiling whats not needed | 12:54 |
| G__81 | this is what makes a kernel so customizable | 12:54 |
| G__81 | i hope you have heard about Kernel Modules | 12:55 |
| dash123 | ...will wiki it later... | 12:55 |
| G__81 | Kernel Modules are loadable modules in the kernel. It gets loaded when its necessary on the fly and hence it removes the concept of restarting the system | 12:55 |
| l0nwlf_ | G__81: I got some error | 12:56 |
| G__81 | the device drivers in the linux kernel are written as kernel modules and hence when a device is plugged into the system the appropriate module is loaded | 12:56 |
| l0nwlf_ | http://www.mibbit.com/pb/5EQ0Fx | 12:56 |
| G__81 | l0nwlf_, whats the error | 12:56 |
| G__81 | hm ok the reason is this | 12:56 |
| l0nwlf_ | My kernel just downloaded ...so i was forced to start a bit late | 12:56 |
| G__81 | good that you got this error otherwise people wouldnt have known it :) | 12:57 |
| G__81 | if you want to configure a kernel there are many options | 12:57 |
| G__81 | one make menuconfig the others are make xconfig or make qtconfig . Now if you do make menuconfig the window that comes up needs ncurses-devel package | 12:57 |
| G__81 | and hence if its not installed you would get that error | 12:58 |
| G__81 | and if you do make qtconfig if you dont have qt package installed you would get an error | 12:58 |
| G__81 | so l0nwlf_ you would need the package ncurses-devel package | 12:58 |
| G__81 | to be installed | 12:58 |
| G__81 | any questions ? | 12:59 |
| G__81 | can i move ahead ? | 12:59 |
| l0nwlf_ | it's being downloaded currently :) | 12:59 |
| l0nwlf_ | sure | 12:59 |
| G__81 | ok now | 12:59 |
| G__81 | we have configured the kernel for User Mode Linux Arch and now we need to compile it | 12:59 |
| G__81 | to compile it we do | 12:59 |
| G__81 | make ARCH=um | 12:59 |
| G__81 | and it gets compiled for the UML architecture | 12:59 |
| ... signoff!#fedora-classroom -> dash123("http://www.mibbit.com ajax IRC Client") | 13:00 | |
| G__81 | again i reiterate if you dont give ARCH=um it gets compiled for the host architecture | 13:00 |
| ... join!#fedora-classroom -> dash12(i=425a688e@gateway/web/ajax/mibbit.com/x-8ea2a9f516eab4e9) | 13:00 | |
| G__81 | actually we are cross compiling the kernel for an other architecture. To give you an other example: if you have an i386 system and you want the kernel to be compiled for PPC, you would need to give make ARCH=ppc to compile it for ppc | 13:01 |
| G__81 | now once the compilation is over | 13:01 |
| G__81 | you would see a file called linux in the folder | 13:01 |
| G__81 | that's the final binary | 13:01 |
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| * G__81 waits | 13:03 | |
| * jcapel is compiling :) | 13:03 | |
| * l0nwlf_ is compiling | 13:03 | |
| ... signoff!#fedora-classroom -> about_config(Client Quit) | 13:04 | |
| * dash12 's internet is down(on proxy tunneling)...will experiment later | 13:04 | |
| G__81 | can i proceed? | 13:05 |
| ... join!#fedora-classroom -> kulll(n=kulll@203.82.79.2) | 13:05 | |
| l0nwlf_ | yeah | 13:05 |
| G__81 | ok fine | 13:05 |
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| jcapel | yeah, still compiling, but go on | 13:05 |
| G__81 | yeah not a problem | 13:06 |
| l0nwlf_ | same here ..it's still compiling but please move ahead | 13:06 |
| G__81 | you could do it and incase you have a problem later you could send me an email i could help you out | 13:06 |
| l0nwlf_ | thanks | 13:06 |
| dash12 | ok...proceed | 13:06 |
| G__81 | ok now once the compilation is done you would see a binary file called linux in your folder | 13:07 |
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| G__81 | this is the binary that would be used to start User Mode Linux | 13:07 |
| G__81 | now how do we start UML we need a filesystem | 13:07 |
| G__81 | today i shall talk on how to get this up and runnin i could give have a separate session on how to build an embedded file system | 13:07 |
| G__81 | for Linux | 13:08 |
| G__81 | now to get a file system you could download a file system which is pre built | 13:08 |
| l0nwlf_ | how and where .. do e get inbuilt file system just like kernel | 13:08 |
| G__81 | http://uml.nagafix.co.uk/filesystems/Fedora10/ | 13:09 |
| G__81 | download it from that link | 13:09 |
| G__81 | wow........ its got f 10 itself :) | 13:09 |
| G__81 | download either the x86 or x64 one | 13:09 |
| G__81 | if your host is x86 dowload the x86 version | 13:10 |
| G__81 | so your environment would be in sync with the host | 13:10 |
| G__81 | got it ? | 13:10 |
| G__81 | now once the file system is downloaded and once the kernel is also built | 13:11 |
| G__81 | we need to run the first virtual instance | 13:11 |
| G__81 | how | 13:11 |
| G__81 | the following is the way | 13:11 |
| ... signoff!#fedora-classroom -> stephanhuiser("leaving") | 13:11 | |
| l0nwlf_ | well can you just tell a little bit more about inbuilt FS | 13:13 |
| G__81 | yeah sure | 13:13 |
| G__81 | whats a prebuilt FS | 13:13 |
| l0nwlf_ | I was amazed seeing this fedora inbuilt FS | 13:13 |
| G__81 | its actually not in built. its pre built fs :) | 13:14 |
| l0nwlf_ | oops , sorry :) | 13:14 |
| G__81 | what generally happens is this | 13:14 |
| G__81 | this pre built fs is again created by a person | 13:14 |
| G__81 | so what he would have done is this | 13:15 |
| G__81 | he would have created a raw file system using a tool and you would need to format that file system for either ext2 or ext3 once its done | 13:15 |
| G__81 | you get a file system | 13:15 |
| G__81 | and of course you need to mention the space you would need | 13:16 |
| G__81 | lets say | 13:16 |
| G__81 | you need 3 Gig of file system you can create a raw file using dd command and then format it using mkfs command and you get the file system for 3 Gig | 13:16 |
| G__81 | so you have 3 Gig of space in that file | 13:16 |
| G__81 | now once you do that you would need some basic tools in that file system right ? | 13:17 |
| G__81 | otherwise the linux kernel cannot boot | 13:17 |
| l0nwlf_ | yeah | 13:17 |
| G__81 | the very basic stuff atleast | 13:17 |
| dash12 | tools like the grub in fedora?? | 13:18 |
| jcapel | kernel done :) | 13:18 |
| G__81 | there is a tool called busybox | 13:18 |
| G__81 | anyone heard of it ? | 13:18 |
| jcapel | yes | 13:18 |
| cwickert | yes | 13:18 |
| spevack | G__81: just wanted to remind you of the time, though the :30 class is also yours :) | 13:18 |
| l0nwlf_ | my kernel compilation failed :( | 13:18 |
| ranna | query: the person would have created a raw file system...... can you exact steps.. i mean the website link, if any you know | 13:18 |
| ranna | like you gave for pre-builf FS :) | 13:19 |
| jcapel | slightly offtopic: i've now got a vmlinux and linux file, are these the same? | 13:19 |
| G__81 | busybox is a software which is used on 90 % of the embedded devices with which you can create a basic file system with necessary tools | 13:19 |
| G__81 | spevack, yeah sure thanks :) | 13:19 |
| l0nwlf_ | "cannot find -lutil" | 13:20 |
| G__81 | ranna, i am not sure of a link but if you would want a way to use busybox and create a file system i could write a wiki page on it in fedora unity and can send out that link to you | 13:20 |
| dash12 | lease do...wud be interested to know | 13:21 |
| dash12 | *please | 13:21 |
| G__81 | yeah sure :) | 13:21 |
| jcapel | l0nwlf_: yum groupinstall "Development Tools" should give you everything you need | 13:21 |
| jcapel | although it's probably just one package | 13:21 |
| ranna | sure g_81, thank you | 13:21 |
| ... join!#fedora-classroom -> mharris(n=mharris@fedora/mharris) | 13:22 | |
| jcapel | that's missing, that is | 13:22 |
| dash12 | ok so what is busybox | 13:22 |
| l0nwlf_ | jcapel: thanks | 13:22 |
| jcapel | l0nwlf_: after that just make ARCH=um again, should pick up where it got stuck | 13:22 |
| G__81 | busybox is an utility through which you can create an embedded file system with basic utilities like you would have rpm command and other stuff installed if you want you could also have deb installed | 13:23 |
| l0nwlf_ | Development tool is getting installed | 13:23 |
| G__81 | hence by this way you create a file system from scratch | 13:23 |
| G__81 | when i say embedded file system i mean a file system which is so less in space | 13:23 |
| ... signoff!#fedora-classroom -> openpercept(Read error: 104 (Connection reset by peer)) | 13:23 | |
| zer0c00l | G_81: ramdisk? | 13:23 |
| G__81 | and thats how you see linux runs on almost all devices | 13:23 |
| ... join!#fedora-classroom -> LynuxDevil(n=LynuxDev@unaffiliated/ferret0567/x-681468) | 13:24 | |
| G__81 | no not a ramdisk ramdisk is non volatile | 13:24 |
| G__81 | basically | 13:24 |
| LynuxDevil | ok | 13:24 |
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| G__81 | zer0c00l, i ll give you an example | 13:24 |
| zer0c00l | ok | 13:24 |
| ... signoff!#fedora-classroom -> kulll(Connection timed out) | 13:25 | |
| G__81 | zer0c00l, lets say you have 5 MB of space in your embedded device and you have customized your kernel compilation so that it occupies so less space say some 2 MB and now you need to have a file system for 3 MB you cannot create it with general tools | 13:25 |
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| zer0c00l | G__81, ok | 13:26 |
| LynuxDevil | hello | 13:26 |
| LynuxDevil | I am a Linux user for 3+ years, and a Windows user since age 4, 5, or 6. I am now 15 | 13:26 |
| G__81 | you would need a file system with basic utilities for 3 MB and this needs to be done by some utility which gives you a stripped version of the image of all the commands like ls, date, find, grep etc | 13:26 |
| G__81 | thats what busybox does for you | 13:26 |
| LynuxDevil | ah...NVRAM fun stuff! | 13:26 |
| G__81 | so in 5 MB you will have the kernel + your File system running in your device | 13:26 |
| l0nwlf_ | kool | 13:26 |
| LynuxDevil | so...any other instructions for me? | 13:27 |
| spevack | G__81: 3 minutes until the next class | 13:27 |
| G__81 | if you guys want a separate session on busybox i can do it for you | 13:27 |
| jcapel | before we're out of time, once I have this kernel and FS-image, how do I start it? | 13:27 |
| G__81 | yeah sure | 13:27 |
| spevack | G__81: but there is no one after you, so there's flexibility :) | 13:27 |
| G__81 | yeah thanks spevack :) | 13:28 |
| jcapel | by the way, I find this very interesting, so thanks. :) | 13:28 |
| G__81 | ./linux ubd0=your_File_System mem=1024M | 13:28 |
| G__81 | this would get your UML stuff started | 13:28 |
| G__81 | if you want it be more clear | 13:28 |
| G__81 | lets say your kernel binary is in /home/xxx/kernel | 13:29 |
| G__81 | you could give | 13:29 |
| G__81 | /home/xxx/kernel/linux ubd0=File_System_path/File_system | 13:29 |
| G__81 | the file system which you would have downloaded would be a tar file so you need to uncompress it first | 13:29 |
| jcapel | do I need to run this as root, or will any user with the privileges on that file system do? | 13:29 |
| LynuxDevil | UML...mmmmm.... | 13:29 |
| G__81 | jcapel, thanks :) | 13:30 |
| LynuxDevil | is UML faster than VirtualBox? | 13:30 |
| ... join!#fedora-classroom -> yosii(n=yosi@ppp-70-247-74-104.dsl.ltrkar.swbell.net) | 13:30 | |
| G__81 | you dont need to be a super user | 13:30 |
| LynuxDevil | yeah | 13:30 |
| G__81 | LynuxDevil, yeah its | 13:30 |
| LynuxDevil | yeah | 13:30 |
| LynuxDevil | but is it faster? | 13:30 |
| LynuxDevil | it is? | 13:30 |
| G__81 | yes | 13:30 |
| G__81 | LynuxDevil, but generally selecting a proper virtualization tool depends on what you want to do | 13:31 |
| jcapel | cool, it's running :) | 13:31 |
| G__81 | jcapel, hey great :) | 13:31 |
| spevack | for those who are here for Introduction to Netlink Sockets, we'll be starting in a few minutes. The previous class is just finishing up | 13:31 |
| G__81 | do you get the fedora prompt ? | 13:31 |
| LynuxDevil | G__81: oh, servers | 13:31 |
| LynuxDevil | G__81: Maybe play a little game now and then | 13:32 |
| LynuxDevil | G__81: nothing serious | 13:32 |
| l0nwlf_ | An error occurred while extracting files. (null) | 13:32 |
| jcapel | G__81: I get dropped into a shell | 13:32 |
| G__81 | yeah | 13:32 |
| G__81 | now this is the first step | 13:32 |
| jcapel | it's complaining about a missing modules.dep though | 13:33 |
| G__81 | spevack, can i extend this session or should i stop it now and continue this as part 2 later ? | 13:33 |
| G__81 | jcapel, yeah we could correct it though | 13:33 |
| G__81 | just create a directory in the path it says | 13:33 |
| G__81 | /lib/modules/2.6/29/modules.dep | 13:33 |
| G__81 | just create this | 13:33 |
| G__81 | and it should stop complaining :) | 13:33 |
| LynuxDevil | oh, let's have a class on using and configuring GNU Screen, including starting it up on login with a script if it's safe as to not mess up SCP/SFTP/RSYNC over SSH | 13:34 |
| jcapel | touching it is enough? | 13:34 |
| G__81 | yeah its enough | 13:34 |
| LynuxDevil | I love GNU SCreen | 13:34 |
| spevack | G__81: i think you should see who is here for Netlink Sockets | 13:34 |
| LynuxDevil | show people what you can do with it | 13:34 |
| G__81 | create the directories and do a touch of modules.dep | 13:34 |
| spevack | G__81: and ask them what they prefer | 13:34 |
| LynuxDevil | I am here for Netlink Sockets | 13:34 |
| LynuxDevil | It's some kernel <-> Userspace communication thing, right? | 13:34 |
| G__81 | yeah | 13:35 |
| spevack | anyone else for Netlink Sockets? And do you mind waiting until :45 to start? | 13:35 |
| jcapel | G__81: worked, great. I had to do a mount -o remount,rw / for that first | 13:35 |
| * dash12 is happy as long as he gets the logs of this class so no problem with extending | 13:35 | |
| mharris | I'm here to lurk on Netlink Sockets, but don't care what time it starts as I don't have to be anywhere :) | 13:35 |
| spevack | LynuxDevil: is it ok if we delay the start a little bit? | 13:35 |
| jcapel | and had to mount /proc as well, but seems to be functioning now :) | 13:35 |
| G__81 | yeah great :) | 13:36 |
| spevack | G__81: i say, just carry on. But tell us what time you think you want to start Netlink Sockets | 13:36 |
| LynuxDevil | spevack: absolutely | 13:36 |
| LynuxDevil | I am just hanging out :) | 13:36 |
| * zer0c00l please update this class is irc , i missed first 15 mins :( | 13:36 | |
| spevack | zer0c00l: we'll post logs | 13:36 |
| zer0c00l | ok | 13:36 |
| LynuxDevil | like...Listening to "Weird Al" Yankovic :) | 13:36 |
| G__81 | spevack, i guess we could start at 11:45 UTC | 13:36 |
| mharris | What's that in universal time? | 13:37 |
| mharris | ie: EST :) | 13:37 |
| LynuxDevil | or CST? | 13:37 |
| * mharris runs | 13:37 | |
| ... join!#fedora-classroom -> toxa(n=toxa@92.127.96.67) | 13:37 | |
| LynuxDevil | oh, CDT | 13:37 |
| LynuxDevil | s/oh/or/ | 13:37 |
| zer0c00l | date -u gives u time in utc mharris | 13:37 |
| LynuxDevil | oh | 13:37 |
| G__81 | ok now coming back to UML | 13:37 |
| mharris | zer0c00l: I'm kidding... I know UTC ;) | 13:37 |
| LynuxDevil | I forgot | 13:37 |
| G__81 | jcapel, what you have got is the first step | 13:37 |
| LynuxDevil | nrb | 13:37 |
| LynuxDevil | brb* | 13:38 |
| mharris | I just like to think the world revolves around EST rather than UTC :) | 13:38 |
| LynuxDevil | mharris: it never did :) | 13:38 |
| spevack | ok, netlink sockets will start in 7 minutes then :) | 13:38 |
| G__81 | now to come out of user mode linux you need to do power off in the UML shell and you get out of UML | 13:38 |
| LynuxDevil | oh, does anybody know how to get Amarok 2 to play MP3s? | 13:38 |
| l0nwlf_ | G__81: for some reasons I'm not able to extract filesystem | 13:38 |
| jcapel | I hate to be asking this, but could we limit the offtopic-chatter please? | 13:38 |
| G__81 | l0nwlf_, can you download it again ? | 13:39 |
| LynuxDevil | can we have a sort session on configuring all supported Fedora to be able to play DVD, rip DVD, MP3, and AAC? | 13:39 |
| LynuxDevil | jcapel: I want it to be a class | 13:39 |
| LynuxDevil | it's one of my pet peeves about Fedora | 13:39 |
| LynuxDevil | nothing special, just a short class would be much appreciated | 13:39 |
| l0nwlf_ | G__81: yeah , sure | 13:39 |
| LynuxDevil | like, before this starts | 13:39 |
| mharris | LynuxDevil: Probably legal issues with Fedora giving classes on how to use legally grey software. :) | 13:39 |
| LynuxDevil | mharris: I wouldn't worry about that | 13:40 |
| LynuxDevil | mharris: MP3 is not grey | 13:40 |
| LynuxDevil | mharris: MP3 creators said OK | 13:40 |
| mharris | Nor would I. The Fedora Project however... | 13:40 |
| LynuxDevil | mharris: so there you go | 13:40 |
| mharris | Not the place to have a legal debate. | 13:40 |
| spevack | guys, please don't chat over the class that G__81 is runnin :) | 13:40 |
| LynuxDevil | it's perfectly legal | 13:40 |
| jcapel | G__81: what would the next steps be to launch this in a background? do you usually launch this in a screen? | 13:40 |
| LynuxDevil | even encoding | 13:40 |
| spevack | let's save suggestions for future classes for a break in the sessions | 13:40 |
| * mharris agrees with spevack ... the discussion should move to #fedora-social | 13:40 | |
| LynuxDevil | alright | 13:40 |
| spevack | or add them to https://fedoraproject.org/wiki/Classroom | 13:40 |
| ranna | G_81... proceed with your class | 13:41 |
| LynuxDevil | I will add | 13:41 |
| G__81 | jcapel, yeah you would need a screen so that you could configure your IP addresses etc and could have host connectivity | 13:41 |
| G__81 | if everyone is clear till this step | 13:41 |
| G__81 | i can proceed to the next one | 13:41 |
| jcapel | ok! | 13:42 |
| LynuxDevil | mharris: , G__81 , spevack : I need a Feodra Wiki account please | 13:42 |
| l0nwlf_ | I'll need the log though | 13:42 |
| LynuxDevil | I only want legal stuff to be in this class | 13:42 |
| G__81 | now i am going to take up the next step of having host connectivity with UML | 13:43 |
| LynuxDevil | G__81: ok | 13:43 |
| l0nwlf_ | LynuxDevil: Can you please STOP CHATTING | 13:43 |
| G__81 | thats what i mean here | 13:43 |
| LynuxDevil | G__81: I am perfectly clear | 13:43 |
| LynuxDevil | l0nwlf_: it's related to the classroom | 13:43 |
| jcapel | LynuxDevil: not to the currently running class, please save discussing future sessions for after classes finish | 13:43 |
| G__81 | lets say you have UML running and you have an IP address configured in UML instance eg: 10.1.1.1 and now you want to do a ping from your host to the User Mode Linux instance | 13:43 |
| jcapel | or another channel | 13:43 |
| G__81 | how do you do it ? | 13:43 |
| G__81 | this is the interesting stuff | 13:43 |
| G__81 | download the uml utilities from this link | 13:44 |
| G__81 | http://user-mode-linux.sourceforge.net/downloads.html | 13:44 |
| LynuxDevil | yes, please tell us G__81 | 13:44 |
| LynuxDevil | G__81: does Fedora 10 include a package for those? Or RPMFusion? | 13:44 |
| G__81 | i guess UML utilities is packaged | 13:45 |
| G__81 | once you download it and unzip it | 13:45 |
| G__81 | do make to compile the package and then do sudo make install | 13:46 |
| G__81 | to install the package | 13:46 |
| G__81 | meanwhile i ll tell you why do you need this uml utilities | 13:46 |
| G__81 | UML utilities package contains some utilities to setup networking between the host and the UML instance | 13:46 |
| ... join!#fedora-classroom -> fcami(n=fcami@fedora/fcami) | 13:46 | |
| jcapel | ok, how do I configure my UML instance to have an IP address? I don't have "ip" or "ifconfig" in it | 13:46 |
| G__81 | you dont have ifconfig command itself ? | 13:47 |
| jcapel | nope | 13:47 |
| jcapel | oh I do, /sbin/ifconfgi | 13:47 |
| G__81 | did you look in as root ? | 13:47 |
| jcapel | just not in PATH | 13:47 |
| LynuxDevil | \hold on G__81 | 13:47 |
| G__81 | yeah | 13:47 |
| G__81 | sure | 13:47 |
| LynuxDevil | let me download an new UML, I know how to compile it | 13:47 |
| LynuxDevil | a new | 13:48 |
| LynuxDevil | ...UML... | 13:48 |
| G__81 | the networking connectivity between the host and the User Mode Linux gets done using the concept of TUN and TAP devices | 13:48 |
| LynuxDevil | yes | 13:49 |
| G__81 | have you all compiled and installed uml utilities ? | 13:49 |
| LynuxDevil | I heard that | 13:49 |
| LynuxDevil | I installed the package | 13:49 |
| jcapel | I used the package | 13:49 |
| LynuxDevil | I am not going to use a compile thing | 13:49 |
| LynuxDevil | only for my UML | 13:49 |
| G__81 | jcapel, used it ? | 13:49 |
| ... leave!#fedora-classroom -> fcami("gone") | 13:49 | |
| ... join!#fedora-classroom -> Adi1981(n=adi@host-195.116.125.36.tvksmp.pl) | 13:49 | |
| jcapel | well, installed | 13:49 |
| jcapel | yum install uml_utilities | 13:49 |
| G__81 | ok good now | 13:49 |
| ... join!#fedora-classroom -> dgrift_(n=dgrift@82-197-205-60.dsl.cambrium.nl) | 13:49 | |
| G__81 | just check in the command line whether you have a command called tunctl | 13:50 |
| LynuxDevil | mmm...can I compile a UML for ARM on x86? | 13:50 |
| G__81 | UML itself is a separate architecture | 13:50 |
| G__81 | so it does not know what it runs on | 13:50 |
| jcapel | yes, I have tunctl | 13:50 |
| G__81 | good so its installed | 13:50 |
| LynuxDevil | ok, well, I just need to compile a ARM binary for it | 13:50 |
| LynuxDevil | so...how to do that on Fedora 10? | 13:50 |
| l0nwlf_ | nope | 13:50 |
| l0nwlf_ | not installed | 13:50 |
| LynuxDevil | I just want to test ARM UML on x86 | 13:51 |
| LynuxDevil | just for fun | 13:51 |
| G__81 | l0nwlf_, whats the error ? | 13:51 |
| LynuxDevil | l0nwlf_: install the package uml_utilites | 13:51 |
| l0nwlf_ | ok | 13:51 |
| G__81 | or let me know the compilation error i ll solve it | 13:51 |
| ... signoff!#fedora-classroom -> sherry151("http://www.mibbit.com ajax IRC Client") | 13:51 | |
| l0nwlf_ | It aws simply 'bash: tunctl: command not found' | 13:52 |
| G__81 | did you do sudo make install? | 13:52 |
| G__81 | of the uml utilities | 13:52 |
| G__81 | i think its not installed then | 13:52 |
| l0nwlf_ | I'm installing uml_utilities | 13:52 |
| G__81 | ok now after installation | 13:52 |
| G__81 | we need to do add few more params in the User Mode Linux command | 13:53 |
| G__81 | let us add it to enable networking functionality | 13:53 |
| LynuxDevil | kernel almost done downloading | 13:53 |
| ... signoff!#fedora-classroom -> dash12("http://www.mibbit.com ajax IRC Client") | 13:53 | |
| LynuxDevil | l0nwlf_: that should do it | 13:53 |
| G__81 | /home/xxx/linux-2.6.28/linux ubd0=File_system mem=1024M eth0=tuntap,,,10.1.1.2 | 13:54 |
| G__81 | you see the new parameters eth0=tuntap,,,10.1.1.2 | 13:54 |
| LynuxDevil | rr...more ram would be nice | 13:54 |
| LynuxDevil | grr... | 13:54 |
| G__81 | i guess there is a limit i guess you could go upto 2 gig i believe but not sure | 13:54 |
| G__81 | you could probably try it | 13:55 |
| G__81 | now once you add those parameters and start User Mode Linux | 13:55 |
| G__81 | you would get the UML shell and log into the shell using root as the user name | 13:55 |
| G__81 | then do | 13:55 |
| G__81 | ifconfig eth0 10.1.1.1 up in User Mode Linux | 13:55 |
| G__81 | type ifconfig | 13:55 |
| G__81 | check whether the ip address is configured | 13:56 |
| G__81 | now in your host you would see a new interface thats got created by name tap0 | 13:56 |
| G__81 | do ifconfig in the host and see there would be a new interface that would have got created | 13:56 |
| G__81 | with IP 10.1.1.2 | 13:56 |
| G__81 | now try a ping from the host to UML ping 10.1.1.1 | 13:56 |
| G__81 | you should get ping responses | 13:57 |
| * G__81 waits | 13:57 | |
| cwickert | works4me | 13:57 |
| LynuxDevil | uhh...it's already past next class start time | 13:58 |
| LynuxDevil | that's fine, I'm just saying | 13:58 |
| G__81 | cwickert, ping works ? | 13:58 |
| LynuxDevil | I am getting the Linux 2.6.29.1 extracted | 13:58 |
| cwickert | G__81: yes | 13:58 |
| G__81 | great | 13:58 |
| spevack | G__81: I think we need to take a 5 minute break for you, and start the next class at :05, and invite these folks back after the next class to continue, if they want to | 13:59 |
| LynuxDevil | Pentium 4 POS....hey, you guys should use pbzip2 on a multiple CPU machine, it's faster than bzip2 and seems to work well | 13:59 |
| G__81 | so this is the basic environment though there are more options and tweaks too and you could create a topology too | 13:59 |
| LynuxDevil | alright... yes spevack | 13:59 |
| LynuxDevil | G__81: let's go to the next class, chop chop please :) | 14:00 |
| G__81 | if you want more sessions on UML and if you feel this was useful and interesting you could let me know i could take up | 14:00 |
| LynuxDevil | G__81: I do | 14:00 |
| cwickert | G__81: yes please | 14:00 |
| spevack | G__81: this was a fantastic class -- any class that can run 30 extra minutes is a good one :) | 14:00 |
| jcapel | please, this was really interesting :) thanks a lot | 14:00 |
| LynuxDevil | thank you very much G__81 for your knowledge and your help! | 14:00 |
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