From: Ronald E. P. <re...@un...> - 2002-12-17 06:19:55
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I just wanted to say hi and UML rocks. Ron |
From: Jeff D. <jd...@ka...> - 2002-12-17 18:39:31
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re...@un... said: > I just wanted to say hi and UML rocks. Woohoo! We need more posts like this. I'm getting kind of tired of the usual UML-crashed-and-I-lost-all-my-work-including-my-thesis-and- now-I'm-not-going-to-graduate-so-I'm-going-to-kill-you posts... Jeff :-) |
From: Geoff T. <ge...@ge...> - 2002-12-17 19:07:48
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Hi, * Jeff Dike (jd...@ka...) wrote: > re...@un... said: > > I just wanted to say hi and UML rocks. > > Woohoo! We need more posts like this. I'm getting kind of tired of the > usual UML-crashed-and-I-lost-all-my-work-including-my-thesis-and- > now-I'm-not-going-to-graduate-so-I'm-going-to-kill-you posts... Actually I beg to differ, those "UML-crashed-and-I-lost-all..." posts would be extremely entertaining to read and I'd like you to forward them to the lists. I think they could brighten up many of our lives by pointing out that, no matter how grim the mire of bug-hacking may get, there are those out there suffering a darwinism we can only imagine in our worst nightmares. But as you think there's not enough pointing out of the obvious going on; <AOL>Me too!</AOL> - UML rocks. I'm particularly enthused about this SKAS stuff - is the host-side of that likely to make its way into linus' tree or is that waxing too hopeful? Cheers, Geoff -- Geoff Thorpe ge...@ge... http://www.geoffthorpe.net/ |
From: Steve S. <sn...@fr...> - 2002-12-17 19:33:52
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On Tue, Dec 17, 2002 at 02:05:47PM -0500, Geoff Thorpe wrote: > But as you think there's not enough pointing out of the obvious going > on; <AOL>Me too!</AOL> - UML rocks. ;-) > I'm particularly enthused about this > SKAS stuff - is the host-side of that likely to make its way into linus' > tree or is that waxing too hopeful? As LWN said it, (i lost the url) it is unlikely that it will find its way onto 2.5 since SKAS (aka /proc/mm) is a *new* VM feature, which isn't a Good Thing in the middle of a *feature freeze*. But who knows... ;-) Steve -- GPG public key available from http://snide.free.fr/gpg/snide-free.fr.asc Or by email to "snide at free.fr" with "send key pub" as subject Fingerprint: 91E3 C5F1 2641 4D0F EDD0 7116 D187 5929 14A8 FDA2 |
From: James N. <jn...@nk...> - 2002-12-17 19:45:26
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On Tue, 2002-12-17 at 13:42, Jeff Dike wrote: > re...@un... said: > > I just wanted to say hi and UML rocks. > > Woohoo! We need more posts like this. I'm getting kind of tired of the > usual UML-crashed-and-I-lost-all-my-work-including-my-thesis-and- > now-I'm-not-going-to-graduate-so-I'm-going-to-kill-you posts... Well then, UML ROCKS! We've reduced over 20 servers (separated for security) into a handful of physical UML Host Servers over the last month, and haven't seen a crash since switching to SKAS in 2.4.19-37um. If we go a couple more weeks without a crash, I'll be ready to start moving web servers over to it and then we'll REALLY have a pile of servers. Performance has been _excellent_, and as soon as I find a program to import sar/sysstat data into RRDTool databases (or some other means of graphing), I'll post some graphs for everyone to look at. For now, I can just say that my busiest UML Host Server averages 99.04% idle. Thanks, Jeff! -James |
From: Ian C. <mai...@ic...> - 2002-12-18 13:54:18
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Hello, > I just wanted to say hi and UML rocks. Here here! > I'm getting kind of tired of the usual > UML-crashed-and-I-lost-all-my-work-including-my-thesis-and- > now-I'm-not-going-to-graduate-so-I'm-going-to-kill-you posts... Maybe you should add a "Use UML at your own risk" type thing on the uml site? Also, you should point out they should keep backups of important files :)) Bye for Now, Ian |
From: Fermin G. M. <ga...@di...> - 2002-12-19 16:23:09
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Hello everyone. I plan to use virtual network support of UML to=20 simulate *complex* network topologies (until now all test has been with the simple configurations described in the HOWTO). For example (ASCII diagram,=20 see with Courier): UML1 ---------- UML2 ------ UML3 | \ | | | \ | | | \ | | UML3 UML4 UML5 ------ UML6 | \ | \ | \ UML7 Host enviroment ---- Internet =20 - Are posible these network scenarios (I suppose yes, using eth<n> param properly and configuring=20 bridges, uml_swtichs and taps in the host enviroment)? - Have somebody test similar scenarios or can provide me with some examples, papers, experiences, related information, etc.? Thanks very much in advance! ------- Ferm=EDn DIT UPM |
From: James N. <jn...@nk...> - 2002-12-19 17:19:46
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On Thu, 2002-12-19 at 11:15, Fermin Galan Marquez wrote: > I plan to use virtual network support of UML to > simulate *complex* network topologies (until now > all test has been with the simple configurations > described in the HOWTO). For example (ASCII diagram, > see with Courier): > > > UML1 ---------- UML2 ------ UML3 > | \ | | > | \ | | > | \ | | > UML3 UML4 UML5 ------ UML6 > | \ > | \ > | \ > UML7 Host enviroment ---- Internet > > - Are posible these network scenarios (I suppose yes, > using eth<n> param properly and configuring > bridges, uml_swtichs and taps in > the host enviroment)? Yeah, I use bridged TAP devices to simulate network our firewalled network topologies. Basically, create the TAP interfaces, create the bridge interfaces, and add the TAP interfaces to the bridges in order to create networks. > - Have somebody test similar scenarios or can > provide me with some examples, papers, > experiences, related information, etc.? I'm working on a set of scripts to make this configuration a bit more intuitive (and includes configuring the UML Nodes as well), but here's an example of creating a network topology using TAPs and bridges: tapctl -t uml1-eth0 # \ # \ tapctl -t uml2-eth0 # > Network1 # / tapctl -t uml3-eth0 # / tapctl -t uml3-eth1 # ---> Host environment --> Internet tapctl -t uml3-eth2 # \ # > Network2 tapctl -t uml4-eth0 # / tapctl -t uml4-eth1 # \ # > Network3 tapctl -t uml5-eth0 # / ## ## Create the networks. ## brctl addbr Network1 brctl addbr Network2 brctl addbr Network3 ## ## Add the interfaces to the networks ## brctl addif Network1 uml1-eth0 brctl addif Network1 uml2-eth0 brctl addif Network1 uml3-eth0 brctl addbr Network2 uml3-eth2 brctl addbr Network2 uml4-eth0 brctl addbr Network3 uml4-eth1 brctl addbr Network3 uml5-eth0 ## ## Setup the link to the Host Environment ifconfig uml3-eth1 XXX.XXX.XXX.XXX netmask YYY.YYY.YYY.YYY -James |
From: Fermin G. M. <ga...@di...> - 2002-12-19 17:11:03
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On 19 Dec 2002, James Neal wrote: > I'm working on a set of scripts to make this configuration a bit more > intuitive (and includes configuring the UML Nodes as well), but here's > an example of creating a network topology using TAPs and bridges: It's the first time that I hear about tapctl comand and my Linux distribution doen't include it. Where could I find it? I look your script carefully. Thanks again! -------- Ferm=EDn DIT UPM |
From: James N. <jn...@nk...> - 2002-12-19 19:00:19
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On Thu, 2002-12-19 at 12:03, Fermin Galan Marquez wrote: > On 19 Dec 2002, James Neal wrote: > > > I'm working on a set of scripts to make this configuration a bit more > > intuitive (and includes configuring the UML Nodes as well), but here's > > an example of creating a network topology using TAPs and bridges: > > It's the first time that I hear about > tapctl comand and my Linux distribution > doen't include it. Where could I find it? Whoops! I meant 'tunctl'. I was doing it from memory. > I look your script carefully. Thanks again! Hope it helps. -James |