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From: Denis S. <dar...@gm...> - 2011-04-30 17:56:36
|
I will give it a thorough check to this. I sounds really interesting. On Sat, Apr 30, 2011 at 1:45 PM, Jon Ander Hernandez <jo...@gm...>wrote: > We should definitely replace in the end the actual chroot mode > (kestrel-images --chroot) with a Linux Container (LXC) mode. That way > we will be able to allow common users to scale root privileges on the > images without any fear. > > http://en.wikipedia.org/wiki/LXC > https://help.ubuntu.com/community/LXC > > Another interesting idea, is to use LXC to simulate multiple nodes > without any complete virtualization (no performance gain, but it can > be used in universities to teach parallel programming without the need > of a real cluster). > > Regards, > > JonAn. > > > ------------------------------------------------------------------------------ > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. Delivers lowest initial > acquisition cost and overall TCO of any competing solution. > http://p.sf.net/sfu/whatsupgold-sd > _______________________________________________ > Kestrelhpc-developers mailing list > Kes...@li... > https://lists.sourceforge.net/lists/listinfo/kestrelhpc-developers > |
|
From: Jon A. H. <jo...@gm...> - 2011-04-30 17:45:49
|
We should definitely replace in the end the actual chroot mode (kestrel-images --chroot) with a Linux Container (LXC) mode. That way we will be able to allow common users to scale root privileges on the images without any fear. http://en.wikipedia.org/wiki/LXC https://help.ubuntu.com/community/LXC Another interesting idea, is to use LXC to simulate multiple nodes without any complete virtualization (no performance gain, but it can be used in universities to teach parallel programming without the need of a real cluster). Regards, JonAn. |
|
From: Jon A. H. <jo...@gm...> - 2011-04-28 18:55:51
|
KestrelHPC is something simple :
- Edits or generates (based on templates) some configuration files on
the front end and on the nodes images.
We need to create entries on the nfs's export file (/etc/exports)
We need to configure the dnsmasq
We need to create config files for pxelinux
We need to edit sshd config (disable the public key based
authentication on some circunstances)
We need to edit ssh config (we need to avoid issues with the
known_hosts file).
etc...
- Installs packages on the node images.
Some basic utils:
- ethtool to set the WOL mode
- beep
- python for the rpc
- etc...
Some extras:
Like plymouth or openmpi when plymouth and openmpi modules are installed.
- Installs some files on the node images.
- num-of-cpus : which gets the number of cpus parsing /dev/cpuinfo
- kestrel_connect : which sends a connect event to the kestrel rpc daemon.
- etc...
Probably tons of this things can be avoided to get a minimal
functional hpc cluster, but we want to get a good tool for getting
good hpc clusters :
- Easy to configure
- Easy to extend
- Secure
So we ended creating a set of stages :
- Event scripts.
- Install scripts.
- Configure scripts.
- Package scripts.
The problem is that each time we add a new abstraction/stage, the more
difficult it gets to understand how everything works and what they do.
My first idea was to give good names to each script on each stage, so
I created a naming convention (host|image_service_description or
image_service_description_chroot if it was supposed to be run on a
chroot). I also splitted many scripts to try to make each script
simpler (one script, one functionality).
The problem is, that script names tend to get too large and I also end
modifying their names too much ruinning the user override capability.
Although I give the script large descriptive names, they are never
enough to explain what they do. But it also got worse for me, it
became harder to locate on which script I was modifying or installing
a file on the image.
So... we need to return to the simplicity:
- Scripts need to map the edited/created files.
Examples :
install/image/sbin/dhclient-script(edit,sh)
install/image/etc/apt/apt.conf.d/99kestrel
install/image/etc/hostname
install/image/etc/init.d/kestrel_disconnect(Ubuntu)
install/image/etc/init.d/kestrel_connect(Debian)
configure/image/sbin/kestrel_connect
configure/image/etc/fstab("nfs4",edit,sh)
configure/image/etc/ssh/sshd_config(edit,sh)
- Pros :
- It is much easier to understand what files we are editing.
- It is much easier to review. Could have anyone spotted before
that we were editing the apt configuration?
- We can use distinct templates for Ubuntu and Debian.
- Contras :
- Now it is more difficult to spot what service made necessary to
modify some files.
So... How it works?
Now will use flags:
- Mark if a file is generated using a template (by default) or if
we are editing it :
- Template based
install/image/etc/hostname
- Edited
install/image/sbin/dhclient-script(edit,sh)
We run sed to avoid any call from dhclient-script to ifconfig.
- Create different template for different releases :
install/image/etc/init.d/kestrel_disconnect(Ubuntu)
install/image/etc/init.d/kestrel_disconnect(Ubuntu_11.04)
install/image/etc/init.d/kestrel_connect(Debian)
install/image/etc/init.d/kestrel_connect(Debian_squeeze)
etc...
- Mark if it is a shell script run under a chroot (by default on images)
configure/image/etc/ssh/sshd_config(edit,sh, chroot)
Edit files normally use set_variable function to set some variables :
set_variable <key> <value> <file> [<separator_re> <separator>]
$ cat configure/image/etc/ssh/sshd_config(edit,sh, chroot)
#!/bin/bash
set_variable "AuthorizedKeysFile"
"/${HOME_MODE#/}/%u/.ssh/authorized_keys" ${FILE} ""
- Label a modification:
configure/image/etc/fstab("nfs4",edit,sh)
configure/image/etc/fstab("gfs",edit,sh)
We can edit /etc/fstab from multiple services: nfs4, GFS, etc...
Suggestions? Comments?
I have almost converted every script to the new system, but this will
require much more testing for KestrelHPC 2.1.
Regards,
JonAn.
|
|
From: Denis S. <dar...@gm...> - 2011-04-28 17:55:48
|
Great Work Jonan!
The testing part I shall soon start it. The maturity of KestrelHPC is
getting to a really great great point.
Keep up the great work!
Denis
PS: Thanks to the whole community also for testing KestrelHPC and helping in
the development of the project.
On Thu, Apr 28, 2011 at 1:39 PM, Jon Ander Hernandez <jo...@gm...>wrote:
> Task already done :
>
> - Added bash autocomplete support.
>
> - kestrel-nodes now checks if the kestrel daemon is running.
> If it is not running it tries to start the daemon or returns an error
> message (probably there is a configuration issue, or the network
> device is not ready).
>
> - kestrel daemon starts from an if-up.d script, when a network device
> with the configured ip is found.
> A change to the net device requires restarting the daemon, now it is
> done automatically.
>
> - Improved exported home handling.
> Exporting the home dir by default imposes a critical security concern
> when installed on a _non dedicated_ computer/frontend (everything
> would be exposed throught the nfs export to the LAN: ssh public keys,
> gpg keys...).
> Now by default we export a dedicated directory /kestrel/${user} to the
> nodes. We also create a link /home/${user}/kestrel pointing to
> /kestrel/${user}. The directory can be changed using the HOME_DIR
> variable. If the user decides to export /home/${user} dir, then the
> ssh public key based authentication is disabled on the frontend.
>
> - New Plymouth module.
> Plymouth is a KMS (Kernel Mode Setting, it does not require any X
> server) based graphical splash screen. This module install plymouth on
> the nodes, and adds a kestrel theme which shows an informative message
> on the nodes.
>
> - New Videowall module.
> It simplifies the creation of video walls using Xdmx and Chromium. It
> requires more testing.
>
> - kestrel-lib refactoring.
> kestrel-lib has been splitted on to 4 files :
>
> - defaults-lib : functions related to the configuration stuff.
> - kestrel-chroot-lib : helper functions to be using under chrooted
> scripts.
> - kestrel-status-lib : node status functions (connected,
> disconnected, etc...).
> - kestrel-lib : Everything else.
>
> The rationale behing this :
>
> - defaults-lib: Most of the utils don't require all the
> funcionality, only the configuration stuff.
> - kestrel-chroot-lib: Only some functions need (make sense) to be
> available from the scripts run under the chroot.
> - kestrel-status-lib: This is probably one the most important parts
> of kestrel which previously was "lost" under tons of the functions
> available on kestrel-lib.
>
> - Lots of fixes.
>
>
> Things to do :
>
> - Finnish the on going script refactoring (more on this on other email).
>
> - Testing, testing and more testing.
>
>
> Regards,
>
> JonAn.
>
>
> ------------------------------------------------------------------------------
> WhatsUp Gold - Download Free Network Management Software
> The most intuitive, comprehensive, and cost-effective network
> management toolset available today. Delivers lowest initial
> acquisition cost and overall TCO of any competing solution.
> http://p.sf.net/sfu/whatsupgold-sd
> _______________________________________________
> Kestrelhpc-developers mailing list
> Kes...@li...
> https://lists.sourceforge.net/lists/listinfo/kestrelhpc-developers
>
|
|
From: Jon A. H. <jo...@gm...> - 2011-04-28 17:39:29
|
Task already done :
- Added bash autocomplete support.
- kestrel-nodes now checks if the kestrel daemon is running.
If it is not running it tries to start the daemon or returns an error
message (probably there is a configuration issue, or the network
device is not ready).
- kestrel daemon starts from an if-up.d script, when a network device
with the configured ip is found.
A change to the net device requires restarting the daemon, now it is
done automatically.
- Improved exported home handling.
Exporting the home dir by default imposes a critical security concern
when installed on a _non dedicated_ computer/frontend (everything
would be exposed throught the nfs export to the LAN: ssh public keys,
gpg keys...).
Now by default we export a dedicated directory /kestrel/${user} to the
nodes. We also create a link /home/${user}/kestrel pointing to
/kestrel/${user}. The directory can be changed using the HOME_DIR
variable. If the user decides to export /home/${user} dir, then the
ssh public key based authentication is disabled on the frontend.
- New Plymouth module.
Plymouth is a KMS (Kernel Mode Setting, it does not require any X
server) based graphical splash screen. This module install plymouth on
the nodes, and adds a kestrel theme which shows an informative message
on the nodes.
- New Videowall module.
It simplifies the creation of video walls using Xdmx and Chromium. It
requires more testing.
- kestrel-lib refactoring.
kestrel-lib has been splitted on to 4 files :
- defaults-lib : functions related to the configuration stuff.
- kestrel-chroot-lib : helper functions to be using under chrooted scripts.
- kestrel-status-lib : node status functions (connected,
disconnected, etc...).
- kestrel-lib : Everything else.
The rationale behing this :
- defaults-lib: Most of the utils don't require all the
funcionality, only the configuration stuff.
- kestrel-chroot-lib: Only some functions need (make sense) to be
available from the scripts run under the chroot.
- kestrel-status-lib: This is probably one the most important parts
of kestrel which previously was "lost" under tons of the functions
available on kestrel-lib.
- Lots of fixes.
Things to do :
- Finnish the on going script refactoring (more on this on other email).
- Testing, testing and more testing.
Regards,
JonAn.
|
|
From: Jon A. H. <jo...@gm...> - 2011-04-13 10:14:11
|
Hello, 2011/4/13 Carachi <car...@gm...>: > Hi, > I want to know if Kestrelhpc support all types of MPI. MPI is only an interface (API) and there are multiple implementations of MPI. KestrelHPC-openmpi module install openmpi on the frontend and on the node image, and adds some event scripts which modify openmpi's hosts file when a node is waken up, or when is shut down. This way you can run mpi jobs over all the connected nodes without having to specify them one by one. > I will write an application in java, and I want use the JPPF framework > (http://www.jppf.org/). > Is compatible with Kestrel? We don't have a kestrel module for jppf, but you can install it by hand on your frontend and on the node image. Remember that the node images are hosted on /var/lib/kestrel/images/<image_name>, and that you can also use kestrel-images --chroot to open a terminal under the node image. Regards, JonAn. |
|
From: Carachi <car...@gm...> - 2011-04-13 08:37:26
|
Hi, I want to know if Kestrelhpc support all types of MPI. I will write an application in java, and I want use the JPPF framework (http://www.jppf.org/). Is compatible with Kestrel? If not, there is some framework/library that I can use?? Thank you Carachi |
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 14:15:45
|
2011/3/15 pwillis <p.w...@te...>: > Hello, > > I just wanted to verify that Kestrel will run gfortran F90 > code with MPI. Is this the case? I have no experience with Frotran... but from what I know OpenMPI supports Fortran 90. http://www.open-mpi.org/doc/v1.4/man1/mpif77.1.php > Second question, is the MPI in kestrel MPICH2 or MPI_1 ? KestrelHPC-openmpi module uses openmpi ;-) http://www.open-mpi.org/doc/v1.4/ I've also considered writting a MPICH2 module, if you are interested in it I can finnish it this week. > FORTRAN code requires the MOD files (headers) to compile > against. They should be already installed. > Thanks Regards, JonAn. |
|
From: pwillis <p.w...@te...> - 2011-03-15 13:53:20
|
Hello, I just wanted to verify that Kestrel will run gfortran F90 code with MPI. Is this the case? Second question, is the MPI in kestrel MPICH2 or MPI_1 ? FORTRAN code requires the MOD files (headers) to compile against. Thanks P |
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 13:37:17
|
- Dracut 008+ I need to port everything to Dracut 008+ |
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 13:35:46
|
Hello everybody, Features expected on KestrelHPC 2.1+ - A Live CD/USB image. We will need to write an script which helps creating live cds which fit under a CD. KestrelHPC needs images, so we will need to make some magic there. Although the idea it is pretty simple, the images are a subset of a common system, so we can make use of hard links and share most of the files between the base system and the node images. I think it is posible if we uninstall OpenOffice/Evolution/Banshee/Gimp... and maybe there is room for some demo MPI software. We should join forces with technubuntu to do this. :-) - Autocomplete. It is an easy task but I need time to do it :-S - Charm++ The main issue is the licence. We can not package and distribute it :-S Regards, JonAn. |
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 13:15:09
|
Hello everybody, When sourceforge was attacked and I had to rewiew the SVN history I discovered that there is a lot of people inscribed to the project who I don't know (and who has never contributed to the project). KestrelHPC is almost run by me, so there is no need to have all those accounts and I will delete them. I'm sorry :-) Regards, JonAn. |
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 13:06:16
|
Hello everybody,
Planned changes for KestrelHPC 2.1 :
- Make the daemon start from an if-up.d script.
Now the daemon starts as a init.d script which can lead to race
conditions during the boot, because in Ubuntu the LSB init.d headers
are probably ignored. Also it can fail trying to open a socket with an
ip not set to any network device.
if-up.d scripts are run when a network interface is set. We will start
KestrelHPC daemon if the network device has the configured ip. We can
also stop KestrelHPC daemon the same way.
In this script we can also check if idmapd is running, fixing the
annoying idmapd bug on Ubuntu.
- kestrel-control may be renamed to kestrel-nodes.
This way fits better with the naming of the rest of commands.
- kestrel-nodes and kestrel-cron should check if the daemon is running.
This way we can avoid failures and give more util feedback about why
is kestrel failing. Which normally is because Kestrel is not correctly
configured.
- Improve the web.
- Add a new troubleshooting section.
- Add a brief explanation of HPC computing (people need to know
that an MPI cluster does not work with common aplications).
- Add some examples :
- Benchmarks with HPCC
- Break keys with John the Ripper
- Kerrighed module.
We will need help testing Kerrighed, but I think we could do it in time.
- Videowall module.
It only needs some testing.
Schedule :
- Beta release in 3 weeks
- Stable release in 5 weeks.
Regards,
JonAn.
|
|
From: Jon A. H. <jo...@gm...> - 2011-03-15 00:39:47
|
Hello, 2011/3/15 pwillis <p.w...@te...>: > Hello, > > I am using Ubuntu 10.10 as the base operating system. > > I am setting up Kestrel to run from a master node > with slave nodes booting over ethernet. > > I have 2 network cards, one for the MPI network > and one for moving files to and from the master. > > I am getting ready to set up dhcpd3 > > QUESTION: > > Does kestral install automatically setup dhcpd config? Yes it does, it is complety automatic. But note that it uses dnsmasq as dhcp and tftp server instead of dhcpd. We choose it because it was simpler to configure and because it also acts as a tftp server which is required for PXE. > QUESTION: > > Is there a preferred dhcp server? It is installed automatically as a dependency when you install the kestrelhpc package :-) > QUESTION: > > Is there a sample dhcp_server.config for > handling 2 interfaces? The config file is generated automatically by kestrel_reconfigure. The handling of the 2 interfaces is done by the ip. When you specify the frontend_ip variable on /etc/kestrel/kestrel.conf and reconfigure you create a config file which tells dnsmasq to act as a dhcp server on the interface with that ip. By the way, if you are trying kestrel check that the idmapd and kestrel daemon are up and working with : initctl status idmapd /etc/init.d/kestrel_daemon status We recently discovered a bug on Ubuntu's idmapd start service which make idmapd fail on start up and that makes also kestrel fail :-S Regards, JonAn. |
|
From: pwillis <p.w...@te...> - 2011-03-15 00:09:57
|
Hello, I am using Ubuntu 10.10 as the base operating system. I am setting up Kestrel to run from a master node with slave nodes booting over ethernet. I have 2 network cards, one for the MPI network and one for moving files to and from the master. I am getting ready to set up dhcpd3 QUESTION: Does kestral install automatically setup dhcpd config? QUESTION: Is there a preferred dhcp server? QUESTION: Is there a sample dhcp_server.config for handling 2 interfaces? Thanks for any info. P |
|
From: Jon A. H. <jo...@gm...> - 2011-02-06 17:34:46
|
2011/2/6 pwillis <p.w...@te...>: > Hello, > > Maybe this information should be added to the installation instructions > on the kestral web pages. The instructions that are on those pages > are not correct. Yes, those instructions are from an updated download page I've written this week, but I was waiting till I finnish the Debian compatible release/snapshot. |
|
From: pwillis <p.w...@te...> - 2011-02-06 17:06:02
|
Hello, Maybe this information should be added to the installation instructions on the kestral web pages. The instructions that are on those pages are not correct. Peter Jon Ander Hernandez wrote: > Hello pwillis, > >> 2011/2/5 pwillis <p.w...@te...>: >>> Hello, >>> >>> What version of Ubuntu does Kestral support? > > 2011/2/5 Denis Sánchez Argoitia <dar...@gm...>: >> Maverick. > > It should also work with Ubuntu 10.04 and 11.04. But you will have to > add the repositories manually, because launchpad doesn't compile the > packages for several distributions automatically, and I haven't had > time to learn how it works (it seems quite complex)... :-S > > I've been also adding support for Debian Squeeze this week, and It > will be also supported in the next release/snapshot. > > These are the steps to install it on Ubuntu 10.04, 11.04 and Debian Squeeze : > > - Gain root level : > > sudo -s > > - Add the repository : > > echo "deb http://ppa.launchpad.net/kestrel/kestrelhpc/ubuntu maverick > main" /etc/apt/sources.list.d/kestrelhpc.list > > - Add the PPA's Signing key : > > apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8475B36D > > - Update the packages > > apt-get update > > - Install KestrelHPC > > apt-get install --no-install-recommends kestrelhpc kestrelhpc-ganglia > kestrelhpc-openmpi > >> Thanks > > Regards, > > JonAn. > |
|
From: Jon A. H. <jo...@gm...> - 2011-02-06 16:59:30
|
Opppsss... Sorry a typo : 2011/2/6 Jon Ander Hernandez <jo...@gm...>: > - Add the repository : > > echo "deb http://ppa.launchpad.net/kestrel/kestrelhpc/ubuntu maverick > main" /etc/apt/sources.list.d/kestrelhpc.list echo "deb http://ppa.launchpad.net/kestrel/kestrelhpc/ubuntu maverick > main" /etc/apt/sources.list.d/kestrelhpc.list The ">" char is important, but Gmail thinks is part of the response. Regards, JonAn. |
|
From: Jon A. H. <jo...@gm...> - 2011-02-06 16:54:23
|
Hello pwillis, >2011/2/5 pwillis <p.w...@te...>: >> Hello, >> >> What version of Ubuntu does Kestral support? 2011/2/5 Denis Sánchez Argoitia <dar...@gm...>: > Maverick. It should also work with Ubuntu 10.04 and 11.04. But you will have to add the repositories manually, because launchpad doesn't compile the packages for several distributions automatically, and I haven't had time to learn how it works (it seems quite complex)... :-S I've been also adding support for Debian Squeeze this week, and It will be also supported in the next release/snapshot. These are the steps to install it on Ubuntu 10.04, 11.04 and Debian Squeeze : - Gain root level : sudo -s - Add the repository : echo "deb http://ppa.launchpad.net/kestrel/kestrelhpc/ubuntu maverick main" /etc/apt/sources.list.d/kestrelhpc.list - Add the PPA's Signing key : apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8475B36D - Update the packages apt-get update - Install KestrelHPC apt-get install --no-install-recommends kestrelhpc kestrelhpc-ganglia kestrelhpc-openmpi > Thanks Regards, JonAn. |
|
From: Denis S. A. <dar...@gm...> - 2011-02-05 21:52:36
|
Maverick. Cheers, Denis On Sat, Feb 5, 2011 at 4:42 PM, pwillis <p.w...@te...> wrote: > Hello, > > What version of Ubuntu does Kestral support? > > Thanks > > Peter > > > ------------------------------------------------------------------------------ > The modern datacenter depends on network connectivity to access resources > and provide services. The best practices for maximizing a physical server's > connectivity to a physical network are well understood - see how these > rules translate into the virtual world? > http://p.sf.net/sfu/oracle-sfdevnlfb > _______________________________________________ > Kestrelhpc-developers mailing list > Kes...@li... > https://lists.sourceforge.net/lists/listinfo/kestrelhpc-developers > |
|
From: pwillis <p.w...@te...> - 2011-02-05 21:43:05
|
Hello, What version of Ubuntu does Kestral support? Thanks Peter |
|
From: Jon A. H. <jo...@gm...> - 2011-02-04 16:36:07
|
2011/1/10 Denis Sánchez Argoitia <dar...@gm...>: > Hello there, > I want to give a push to the mailing list, so there it goes. > There is "bug" in the web page, in the documentation section -> Man pages, > every time you click on a command to see its man page, the title of the web, > not in the explorer window but the image of KestrelHPC at the top of the > web, disappears. I forgot about this issue and this email. Could you fix it? It only requires to change the path of the header on the CSS. Regards, JonAn. |
|
From: Jon A. H. <jo...@gm...> - 2011-02-04 16:32:17
|
Hello,
I have been readying about Kerrighed (Single System Image operating
system for clusters) :
https://wiki.ubuntu.com/EasyUbuntuClustering/UbuntuKerrighedClusterGuide
And we can add support for it, but we would need Debian packages for
it. Although they are not published in the main Download page, there
is a Debian repository, but... there are only amd64 packages :
http://kerrighed.org/debian/
They haven't published their source packages, so... we would need to
write down them, ask them for publish them, or... create our packages
porting their last published ones :
https://gforge.inria.fr/scm/viewvc.php/packages/deb/?root=kerrighed
Regards,
JonAn.
|
|
From: Jon A. H. <jo...@gm...> - 2011-01-28 15:33:47
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Hi again, 2011/1/28 Jon Ander Hernandez <jo...@gm...>: > Hi Dipietro, > > 2011/1/24 Dipietro Salvatore <dip...@gm...>: >> Hi, >> I try to install kestrelHPC but I have a problem with dnsmasq. >> I follow the documentation and the tftp server don't start. >> Why? Can you help me? > > Please send me your /etc/dnsmasq.conf. I've tried on a fresh ubuntu but it worked, some days ago a user reported me the same issue but after a reinstall it worked. It can be very useful for kestrel if you can help me discovering why sometimes fails. If you want to fix it quicky, comment everything on /etc/dnsmasq.conf a run again : sudo kestrel-reconfigure --frontend. Regards, JonAn. |
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From: Jon A. H. <jo...@gm...> - 2011-01-28 13:16:02
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Hi Dipietro, 2011/1/24 Dipietro Salvatore <dip...@gm...>: > Hi, > I try to install kestrelHPC but I have a problem with dnsmasq. > I follow the documentation and the tftp server don't start. > Why? Can you help me? Please send me your /etc/dnsmasq.conf. Regards, JonAn. |
