| --- | Log | opened Mon Jun 09 00:00:33 2008 |
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| 03:54 | <nantes_geek> | yep |
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| 09:31 | <mwright> | Hey guys |
| 09:34 | <Pert> | hi |
| 09:36 | <mwright> | Anyone have a second to help me with Xen? My DomU's don't have any network interfaces >.> |
| 09:37 | <Pert> | mwright: what does your 'vif' line look like? |
| 09:37 | <mwright> | in my DomU config file its blank |
| 09:37 | <mwright> | so |
| 09:38 | <mwright> | vif = [ ' ' ] |
| 09:38 | <Pert> | how about your 'vif-script' line in /etc/xen/xend-config.sxp |
| 09:39 | <mwright> | (vif-script vif-bridge) |
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| 09:40 | <Pert> | mwright: that's odd. try it without the space between the 's. Mine looks like vif = [ '' ] |
| 09:41 | <Pert> | i can't see that being the problem but it's possible |
| 09:41 | <mwright> | sorry, I threw that space in to show it wasn't a quote |
| 09:41 | <mwright> | it doesn't actually have one |
| 09:41 | <Pert> | i see |
| 09:42 | <Pert> | are they PV VMs? |
| 09:42 | <Pert> | stupid question: do they show up when you do `ifconfig -a` |
| 09:43 | <mwright> | well, thats not a stupid question |
| 09:44 | <mwright> | I'm not a huge linux user and all of my virtualization experience is with VMware, so feel free to ask anything you feel like I might have already tried |
| 09:44 | <mwright> | and I did get an interface |
| 09:44 | <mwright> | eth4 now shows up >.> |
| 09:44 | <Pert> | hmm this is because its mac address is changing |
| 09:45 | <mwright> | so I should copy it and set it in the cfg file for the DomU? |
| 09:45 | <Pert> | i used to use vif = [ '' ] all the time but now a favour using vif = [ 'mac=blah' ] |
| 09:45 | <mwright> | k, bout to switch it then |
| 09:46 | <Pert> | mwright: yeah, use the MAC address from your distro's network configuration |
| 09:46 | <Pert> | /etc/sysconfig/network*/*eth0* maybe |
| 09:48 | <Pert> | in my domU configuration generator I use the following bit of perl to make a mac address in Xen's range: |
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| 09:48 | <Pert> | mac=`perl -e'printf(qq/%02X:%02X:%02X\n/, map {rand(255) } (0..2) )'` |
| 09:48 | <Pert> | then vif = [ 'mac=00:16:3E:$mac' ] |
| 09:48 | <mwright> | what do you use to generate configs? |
| 09:49 | <Pert> | my own horror of bash and perl |
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| 09:51 | <Pert> | mwright: http://jp-hosting.net/mkdomU.bash.html |
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| 09:54 | <mwright> | root |
| 09:54 | <mwright> | oops |
| 09:54 | <Pert> | at least it wan't your password |
| 09:55 | <mwright> | hahah |
| 09:55 | <mwright> | true |
| 09:55 | <Pert> | mwright: any luck? |
| 09:55 | <mwright> | though they're all internal and have temp passwords, so it wouldn't do much good for anyone |
| 09:56 | <mwright> | trying it now |
| 09:57 | <mwright> | well |
| 09:57 | <mwright> | I have an interface and its staying around |
| 09:57 | <Pert> | mwright: my script (URL above) is totally debian specific |
| 09:57 | <mwright> | but I still don't have any sort of network access |
| 09:58 | <mwright> | I'm leaving my config alone for the most part, but I'm running this on Ubuntu, so it should work alright =) |
| 09:58 | <Pert> | mwright: ok. what does your 'network-script' line in /etc/xen/xend-config.sxp say? |
| 09:58 | <mwright> | network-script network-bridge I believe |
| 09:59 | <mwright> | Yea |
| 10:00 | <Pert> | does `sudo brctl show` list a bridge with your 'peth0' and some 'vif's in? |
| 10:01 | <Pert> | personally in debian i like to change to (network-script network-dummy) |
| 10:01 | <Pert> | and to make the bridge manually |
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| 10:02 | <Pert> | i don't like the way the xen scripts fiddle things so that the bridge is called eth0 and eth0 is called peth0 or something |
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| 10:09 | <mwright> | sorry, had a business meeting |
| 10:09 | <mwright> | I'll go change that |
| 10:10 | <mwright> | can you help me with setting up manually then? |
| 10:10 | <Pert> | in an ubuntu dom0? |
| 10:11 | <mwright> | Yea |
| 10:11 | <Pert> | it doesn't make a difference BTW. it's just something i like to do |
| 10:11 | <Pert> | the important question is: 15:00:20 < Pert> does `sudo brctl show` list a bridge with your 'peth0' and some 'vif's in? |
| 10:11 | <mwright> | well, I'm sitll having network connectivity issues |
| 10:12 | <mwright> | nope |
| 10:12 | <mwright> | I have xenbr0 |
| 10:12 | <mwright> | oh wait |
| 10:12 | <mwright> | on the right |
| 10:12 | <mwright> | yes |
| 10:14 | <Pert> | it's called xenbr0? that's cool |
| 10:15 | <Pert> | does it have peth0 or eth0 in it? |
| 10:15 | <mwright> | huh, no |
| 10:16 | <mwright> | xenbr2 has peth2 in it though |
| 10:16 | <Pert> | eh? could you paste `sudo brctl show` to me in a PM or something? |
| 10:16 | <Pert> | i'm confused |
| 10:17 | <Pert> | if you cuold do it while a VM or two is running that'd be great |
| 10:20 | <mwright> | dino@dino:~$ sudo brctl show |
| 10:20 | <mwright> | bridge name bridge id STP enabled interfaces |
| 10:20 | <mwright> | xenbr0 8000.feffffffffff no vif1.0 |
| 10:20 | <mwright> | vif11.0 |
| 10:20 | <mwright> | vif4.0 |
| 10:20 | <mwright> | vif5.0 |
| 10:20 | <mwright> | xenbr2 8000.feffffffffff no vif0.2 |
| 10:20 | <mwright> | peth2 |
| 10:20 | <mwright> | that didn't work so well |
| 10:20 | <mwright> | well, it worked well enough |
| 10:20 | <mwright> | can you understand it? |
| 10:21 | <Pert> | yeah |
| 10:21 | <Pert> | do you use eth2 at all? |
| 10:22 | <mwright> | actually, that might be my primary interface |
| 10:23 | <mwright> | the weird thing is I have a vm running that has internet access |
| 10:23 | <mwright> | and they both have the same network settings |
| 10:23 | <Pert> | is it number 0? |
| 10:24 | <Pert> | (ID 0 when you do an `xm list`) |
| 10:24 | <mwright> | 1 |
| 10:24 | <mwright> | Dom0 is 0 |
| 10:25 | <Pert> | ah ok |
| 10:25 | <mwright> | and never mind |
| 10:25 | <mwright> | it looked like it did |
| 10:25 | <mwright> | but it has no actual connectivity |
| 10:25 | <Pert> | ok |
| 10:25 | <mwright> | just an interface and an IP |
| 10:25 | <mwright> | so maybe I should change my network-bridge |
| 10:25 | <mwright> | to xenbr2? |
| 10:25 | <Pert> | what interface on the dom0 has the IP? |
| 10:25 | <mwright> | since thats where my eth port is sitting |
| 10:26 | <mwright> | eth2 |
| 10:27 | <Pert> | yeah change it to (vif-script 'vif-bridge bridge=xenbr2') |
| 10:27 | <Pert> | then stop and start a domU |
| 10:27 | <mwright> | should I do the same for network-script network-bridge? |
| 10:27 | <Pert> | nope. that's doing its job |
| 10:28 | <Pert> | (making the two bridges for you) |
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| 10:29 | <mwright> | gotcha |
| 10:30 | <nantes_geek> | plop |
| 10:31 | <mwright> | heya nantes |
| 10:34 | <mwright> | is there anyway to force my eth5 to be eth0 |
| 10:34 | <mwright> | ? |
| 10:35 | <Pert> | mwright: my suggestion didn't work? |
| 10:36 | <mwright> | Nope =( |
| 10:36 | <nantes_geek> | mwright: you use udev ? |
| 10:37 | <Pert> | you set the mac to the one that the domU network config was expecting and it still came up with a new name? |
| 10:37 | <nantes_geek> | /etc/udev/rules.d/61-net_config.rules |
| 10:37 | <mwright> | no, it came up with the same name, so its still eth5 |
| 10:37 | <nantes_geek> | here |
| 10:37 | <Pert> | mwright: you didn't set it to the right mac address then |
| 10:38 | <wltjr> | anyone got any good links on xen routing? not understanding the relationship between veth0 ip and domU's gateway/ip address |
| 10:38 | <Pert> | mwright: did you look in the domU's network config for the mac address? |
| 10:39 | <mwright> | Igrabbed it from the ifconfig output |
| 10:39 | <mwright> | my actual interface file doesn't have a mac address for eth0 |
| 10:39 | <mwright> | is there some way to set one? |
| 10:39 | <nantes_geek> | mwright: you edit what file ? |
| 10:40 | <nantes_geek> | this or not ? : /etc/udev/rules.d/61-net_config.rules |
| 10:40 | <mwright> | /etc/network/interfaces |
| 10:40 | <mwright> | I don't have that file |
| 10:40 | <nantes_geek> | what have you inside your /etc/udev ? |
| 10:40 | <mwright> | on DomU or Dom0? |
| 10:40 | <nantes_geek> | là où tu veux que ton eth5 soit eth0 |
| 10:41 | <nantes_geek> | where you want your eth5 become eth0 |
| 10:41 | <nantes_geek> | (sorry) |
| 10:42 | <nantes_geek> | you use debian ? |
| 10:42 | <nantes_geek> | http://www.debianhelp.co.uk/udev.htm |
| 10:42 | <mwright> | quite alright |
| 10:43 | <mwright> | Ubuntu, so yes |
| 10:44 | <nantes_geek> | oki that the same the things you need is here http://www.debianhelp.co.uk/udev.htm |
| 10:45 | <mwright> | Pert: is that the right place to grab it? |
| 10:47 | <icarus901> | net-persistent is the file name, or something very similar to it |
| 10:47 | <icarus901> | in /etc/udev/rules.d/ |
| 10:48 | <icarus901> | it will have ethX associated with some MAC |
| 10:48 | <icarus901> | just clear the entries |
| 10:48 | <icarus901> | set the MAC statically in the domU config |
| 10:48 | <icarus901> | and youre all set |
| 10:48 | <nantes_geek> | ... rtfm : http://www.debianhelp.co.uk/udev.htm |
| 10:50 | <mwright> | Yea, I'm reaidng =) |
| 10:50 | <mwright> | *reading |
| 10:50 | <nantes_geek> | :) |
| 10:50 | <wltjr> | udev's persistent net stuff is a pita IMHO |
| 10:51 | <nantes_geek> | me to, but it's the solution for this issue ^^ |
| 10:51 | <wltjr> | anyone familiar with xen on Gentoo? not sure if our stuff is current, and I think our docs could be improved |
| 10:51 | <wltjr> | nantes_geek: if you can get it to take, udev tends to blow my changes away, I have to hack things like setting the file r/o |
| 10:53 | <wltjr> | wrt to xen on Gentoo, we have a routed approach, but our docs are scarce, it brings up a veth0 with same IP as eth0, no mac, and adds a route to routing table for domU, but can't be reached no dom0 <-> domU |
| 10:53 | <nantes_geek> | wltjr: take a look here : http://www.antredugeek.fr/wiki/wiki/bridge%20shorewall%20et%20xen |
| 10:54 | <nantes_geek> | with a full bridged network |
| 10:54 | <wltjr> | nantes_geek: I was trying to avoid the bridged route, I was reading a fair amount reporting issues with the bridge, like it going away? |
| 10:55 | <wltjr> | nantes_geek: guess that's pre xenbr0, I am not sure we have support for that on Gentoo |
| 10:56 | <wltjr> | still very new to xen, but not to linux or routing, but have never done anything with bridges |
| 10:57 | <nantes_geek> | wltjr: i have had a lot of problems with the "current" network scripts, so, now i better like, fix the network conf, and use "real" interface in order to vif0.0 and peth0 |
| 10:57 | <wltjr> | nantes_geek: I am hoping to avoid the entire peth0 stuff |
| 10:58 | <wltjr> | nantes_geek: I like the Gentoo routed approach, just dealing with veth0, not sure about vif0.0 and the relationship there, much less domU |
| 10:58 | <nantes_geek> | in my script, xenbr0 is like a "hub swith" where you plug, the physical interface of the dom0 and the virtual vif of your domU |
| 10:59 | <wltjr> | nantes_geek: how are you starting xend? doesn't it's network scripts change what your script sets? |
| 10:59 | <nantes_geek> | /etc/init.d/xend start |
| 11:00 | <wltjr> | nantes_geek: so your still using the normal bridge scripts etc |
| 11:00 | <nantes_geek> | and the xend use my script instead of the current scripts |
| 11:00 | <wltjr> | nantes_geek: ah ok |
| 11:00 | <nantes_geek> | i only change the /etc/xen/script/network-bridge |
| 11:00 | <wltjr> | nantes_geek: I think there might be issues with the startup scripts on Gentoo as well |
| 11:01 | <wltjr> | atm if I try to bridge route, I can't boot domU, doesn't even try hangs just after xm create |
| 11:01 | <nantes_geek> | have you got a log ? |
| 11:01 | <wltjr> | s/to bridge/the bridged |
| 11:01 | <nantes_geek> | ( xend.log our xendebug |
| 11:01 | <nantes_geek> | or |
| 11:02 | <wltjr> | nantes_geek: didn't even think to look for logs, doh :o |
| 11:03 | <nantes_geek> | www.pastebin.ca |
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| 11:06 | <wltjr> | nantes_geek: one sec, emerging my piped pastebin app, nopaste |
| 11:07 | <nantes_geek> | oki |
| 11:07 | <wltjr> | ruby app and no ruby on server atm |
| 11:12 | <wltjr> | nantes_geek: was to big for rafe.net, I might need to clean it up, but otherwise http://pastebin.ca/1042976 |
| 11:13 | <wltjr> | going to delete it and start over with a smaller log history :) |
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| 11:15 | <nantes_geek> | re |
| 11:15 | <nantes_geek> | i look you paste |
| 11:15 | <nantes_geek> | +r |
| 11:15 | <wltjr> | nantes_geek: I have a smaller one |
| 11:16 | <wltjr> | ah finally got an error going the bridged route, I have to look into that |
| 11:16 | <wltjr> | but pretty sure I would prefer going routed to bridge |
| 11:16 | <mwright> | Pert: if you're still here, I just want to say thank you |
| 11:16 | <mwright> | I finally got a VM up and running |
| 11:16 | <mwright> | and a thank you to you too nantes_geek |
| 11:17 | <mwright> | it not being eth0 breaks it |
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| 11:19 | <nantes_geek> | ;) |
| 11:19 | <wltjr> | nantes_geek: looks like my hanging on bridged route is due to some issue with hotplug and scripts |
| 11:19 | <wltjr> | nantes_geek: http://rafb.net/p/2P8pc099.html |
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| 11:23 | <nantes_geek> | ok |
| 11:24 | <nantes_geek> | when you start you do " xm create " or " xm create -c " ? |
| 11:24 | <wltjr> | nantes_geek: -c |
| 11:24 | <nantes_geek> | is there something or not ? |
| 11:24 | <wltjr> | nantes_geek: as in the config file? |
| 11:25 | <nantes_geek> | yes |
| 11:26 | <wltjr> | nantes_geek: yes, I can pastebin that if you like http://rafb.net/p/8tZwYz33.html |
| 11:26 | <wltjr> | it's kinda mess, been trying all sorts of stuff |
| 11:27 | <nantes_geek> | thats you domU config ? |
| 11:27 | <wltjr> | FYI dom0 is on 192.168.0.0/24, I was thinking to put dom0 on 192.168.1.0/24 or other mask, and to nat or etc |
| 11:27 | <wltjr> | nantes_geek: yeah it's messy though |
| 11:28 | <wltjr> | vif ip should be 192.168.1.10, was trying 0.55 just to see if I could ping it from dom0 |
| 11:28 | <wltjr> | seems like some arp issue there, becuase dom0 never get's a reply to arp queries |
| 11:28 | <nantes_geek> | if you delete ip and gateway line and in the vif line specify something like : vif = [ 'bridge=xenbr0' ] |
| 11:28 | <nantes_geek> | is it running ? |
| 11:28 | <wltjr> | nantes_geek: let me try that |
| 11:29 | <wltjr> | nantes_geek: the routed approach fully boots, I just can't get networking going on either end so dom0 and domU can communicate |
| 11:29 | <wltjr> | one sec phone, brb |
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| 11:38 | <wltjr> | nantes_geek: ok sorry, tried to xenbr0, says it can't find that bridge, should I swap it out for your script? |
| 11:38 | <wltjr> | log of xenbr0 attempt http://rafb.net/p/KwZ4q120.html |
| 11:41 | <nantes_geek> | brctl show ? |
| 11:42 | <wltjr> | nantes_geek: shows a bridge but to peth1, could be some leftover cruft |
| 11:43 | <nantes_geek> | what's the bridge name ? |
| 11:46 | <wltjr> | nantes_geek: eth1, I had uncommented a bridge line that let you specify that, not good, just killed network, bring net back via kvm :) |
| 11:47 | <nantes_geek> | oki |
| 11:47 | <wltjr> | nantes_geek: networking got all screwed up, having to restart server :( |
| 11:47 | <nantes_geek> | arf bad trip |
| 11:47 | <wltjr> | nantes_geek: I really do like the bridge approach |
| 11:48 | <wltjr> | nantes_geek: I do not like how it brings down interfaces, the whole peth0 crap, etc |
| 11:48 | <nantes_geek> | me to |
| 11:48 | <nantes_geek> | to complex for me |
| 11:49 | <wltjr> | nantes_geek: the routed approach on Gentoo seemed very elegant, but docs do not go into enough detail, something I am going to correct once I can get things working |
| 11:50 | <nantes_geek> | i have never test xen with gentoo, so i can't say anything ^^" |
| 11:51 | <wltjr> | nantes_geek: well our docs are just not detailed enuogh IMHO http://www.gentoo.org/doc/en/xen-guide.xml |
| 11:52 | <wltjr> | nantes_geek: ok, well I have networking working now in domU, but via a bridge, and have a bunch of interfaces now |
| 11:53 | <wltjr> | nantes_geek: I guess I can work with that, but had wanted to avoid the bridge, I hope it doesn't go away at some point like I have read |
| 11:56 | <wltjr> | nantes_geek: ty for your time and assistance, still need to research the routed approach a bit more, but might just fly with bridged for now |
| 11:58 | <nantes_geek> | ok |
| 11:58 | <nantes_geek> | if you found something great, thanks to report to me ;) |
| 11:59 | <wltjr> | nantes_geek: yep will do, will also update the gentoo doc for others as well |
| 11:59 | <nantes_geek> | ok many thanks ;) |
| 12:00 | <wltjr> | nantes_geek: yep same to you |
| 12:07 | <mwright> | Huh. Maybe you guys will have an idea of whats going on |
| 12:08 | <mwright> | I finall got my networking in CentOS running |
| 12:08 | <mwright> | but manually assigning an IP address using ifconfig |
| 12:08 | <mwright> | I can ping internal IP's just fine |
| 12:08 | <mwright> | but not external |
| 12:08 | <mwright> | is there somewhere I can set a gateway? |
| 12:11 | <mwright> | I think I figured out where I left it off |
| 12:11 | <nantes_geek> | mwright: iptables ? |
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| 12:13 | <mwright> | I was using the ifcfg-eth0 |
| 12:13 | <mwright> | but it doesn't seem to be working |
| 12:13 | <mwright> | so added set the ip and netmask using ifconfig |
| 12:13 | <mwright> | and route added the gw |
| 12:14 | <mwright> | restarting it now and making sure it works |
| 12:16 | <mwright> | had to add those manually again |
| 12:16 | <wltjr> | nantes_geek: one plus to bridge is no iptables or etc :) domU is just on net like any other machine, kinda nice |
| 12:16 | <nantes_geek> | /etc/init.d/iptables stop ? |
| 12:17 | <nantes_geek> | wltjr: not sure |
| 12:17 | <mwright> | I'm bridging |
| 12:17 | <mwright> | CentOS just doesn't seem to listen to config files for some reason >.> |
| 12:17 | <mwright> | I'm using 5.0 and not 5.1, but it shouldn't matter |
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| 14:16 | <ng_AW> | ++ |
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| 23:06 | <jblack> | Hi. I'm having a problem that's absolutely killing me. Networking is working for the most part, but I'm getting dropped packets; sometimes the dropps are big enough that daemons on domUs are affected. I verified this with netstat -i, and observering high values for TX-OVR |
| 23:07 | <jblack> | I have tried various 2.6.24 kernels (.16 - .19 or so), and a 2.6.22 kernel. I tried various kernel versions on both dom0 and domU |
| 23:09 | <jblack> | pardon, TX-DRP, not TX-OVR |
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| 23:37 | <jblack> | I found it! |
| 23:39 | <jblack> | The antispoofing rule sets a default policy of drop, which of course, drops packets. |
| 23:39 | <jblack> | so, I found 1/2 the problem. The other half is why are packets getting mismarked. |
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| --- | Log | closed Tue Jun 10 00:00:09 2008 |
