From glykos at mbg.duth.gr  Fri May  1 06:53:03 2009
From: glykos at mbg.duth.gr (Nicholas M Glykos)
Date: Fri, 1 May 2009 16:53:03 +0300 (EEST)
Subject: [cAos] Problems remounting xfs partition read-only.
Message-ID: <Pine.LNX.4.62.0905011633400.8193@aspera.cluster.mbg.gr>


Dear All,

A power failure combined with me 'fixing' the non-broken UPS settings, 
resulted to an unclean shutdown of the head node in a caos NSA 1.0 cluster. 
The head node comes with with a RAID5 on a 3ware controller, and an xfs 
filesystem for / (ext2 for /boot). Upon restarting, the system dropped me 
to single user mode, from which I tried to 'xfs_check' and/or 'xfs_repair' 
the filesystem. My attempt to remount the xfs partition read-only using 
'mount -o remount,ro /dev/sdaX' gave no error message, but both /etc/mtab 
and my attempts to run xfs_check & xfs_repair showed that the filesystem 
was not read-only. I tried going to grub and adding a ' ro 1' to the 
kernel invocation, with the same negative results. Because this couldn't 
wait, the problem was solved by booting from a live CD and running 
xfs_repair from there (which, thankfully, showed no serious problems for 
the filesystem).

Any ideas about what I've missed again ?
Thanks,
Nicholas


-- 


          Dr Nicholas M. Glykos, Department of Molecular Biology
     and Genetics, Democritus University of Thrace, University Campus,
  Dragana, 68100 Alexandroupolis, Greece, Tel/Fax (office) +302551030620,
    Ext.77620, Tel (lab) +302551030615, http://utopia.duth.gr/~glykos/



From gmkurtzer at gmail.com  Fri May  1 08:59:45 2009
From: gmkurtzer at gmail.com (Greg Kurtzer)
Date: Fri, 1 May 2009 08:59:45 -0700
Subject: [cAos] Problems remounting xfs partition read-only.
In-Reply-To: <Pine.LNX.4.62.0905011633400.8193@aspera.cluster.mbg.gr>
References: <Pine.LNX.4.62.0905011633400.8193@aspera.cluster.mbg.gr>
Message-ID: <571f1a060905010859l10800790o2d51f5a2a463927b@mail.gmail.com>

To remount a file system in read-only, I always point it to the file
system mount point rather then the raw device (as long as it is
defined in the fstab):

# mount -o remount,ro /

That should have done the trick.

BTW, we are working on a Caos Live CD and are in testing now. If
anyone wishes to test it, please let me know.

Thanks,
Greg

On Fri, May 1, 2009 at 6:53 AM, Nicholas M Glykos <glykos at mbg.duth.gr> wrote:
>
> Dear All,
>
> A power failure combined with me 'fixing' the non-broken UPS settings,
> resulted to an unclean shutdown of the head node in a caos NSA 1.0 cluster.
> The head node comes with with a RAID5 on a 3ware controller, and an xfs
> filesystem for / (ext2 for /boot). Upon restarting, the system dropped me
> to single user mode, from which I tried to 'xfs_check' and/or 'xfs_repair'
> the filesystem. My attempt to remount the xfs partition read-only using
> 'mount -o remount,ro /dev/sdaX' gave no error message, but both /etc/mtab
> and my attempts to run xfs_check & xfs_repair showed that the filesystem
> was not read-only. I tried going to grub and adding a ' ro 1' to the
> kernel invocation, with the same negative results. Because this couldn't
> wait, the problem was solved by booting from a live CD and running
> xfs_repair from there (which, thankfully, showed no serious problems for
> the filesystem).
>
> Any ideas about what I've missed again ?
> Thanks,
> Nicholas
>
>
> --
>
>
> ? ? ? ? ?Dr Nicholas M. Glykos, Department of Molecular Biology
> ? ? and Genetics, Democritus University of Thrace, University Campus,
> ?Dragana, 68100 Alexandroupolis, Greece, Tel/Fax (office) +302551030620,
> ? ?Ext.77620, Tel (lab) +302551030615, http://utopia.duth.gr/~glykos/
>
> _______________________________________________
> cAos mailing list
> cAos at caoslinux.org
> http://lists.caosity.org/mailman/listinfo/caos
>



-- 
Greg Kurtzer
http://www.infiscale.com/
http://www.perceus.org/
http://www.caoslinux.org/


From ranjeet.rai at orkash.com  Mon May  4 00:57:18 2009
From: ranjeet.rai at orkash.com (ranjeet.rai at orkash.com)
Date: Mon, 04 May 2009 13:27:18 +0530
Subject: [cAos] configure diskless OS in CAOS NSA
Message-ID: <49FE9FDE.1080200@orkash.com>

Hi,

I am looking forward to configure diskless in CAOS. Please, help me with 
any technical documentation, if possible. What is the procedure to 
configure this where I want to RUN my OS using a ram disk in the client 
machine?

Best regards,

Ranjeet


From astevens at infiscale.com  Mon May  4 07:42:47 2009
From: astevens at infiscale.com (Arthur Stevens)
Date: Mon, 4 May 2009 07:42:47 -0700
Subject: [cAos] configure diskless OS in CAOS NSA
References: <49FE9FDE.1080200@orkash.com>
Message-ID: <A7B2FFA10C8C4AAD8746ABF6419A7970@computer>

You will need to use perceus (included with caos) to do that. 
http://www.perceus.org/docs/perceus-userguide-1.5.0.pdf

Best of luck,

Arthur
----- Original Message ----- 
From: <ranjeet.rai at orkash.com>
To: <caos at caoslinux.org>
Sent: Monday, May 04, 2009 12:57 AM
Subject: [cAos] configure diskless OS in CAOS NSA


> Hi,
>
> I am looking forward to configure diskless in CAOS. Please, help me with
> any technical documentation, if possible. What is the procedure to
> configure this where I want to RUN my OS using a ram disk in the client
> machine?
>
> Best regards,
>
> Ranjeet
> _______________________________________________
> cAos mailing list
> cAos at caoslinux.org
> http://lists.caosity.org/mailman/listinfo/caos
> 




From ranjeet.rai at orkash.com  Mon May  4 18:17:10 2009
From: ranjeet.rai at orkash.com (ranjeet.rai at orkash.com)
Date: Tue, 05 May 2009 06:47:10 +0530
Subject: [cAos] cAos Digest, Vol 25, Issue 4
In-Reply-To: <mailman.1.1241524801.4660.caos@caoslinux.org>
References: <mailman.1.1241524801.4660.caos@caoslinux.org>
Message-ID: <49FF9396.8070707@orkash.com>

Dear Arthur,

Thank you very much for the hint and I have working on the same. I have 
installed and configured perceus on the master node and booting a client 
with PXE enabled. It boot successfully and asks for a user name and 
password. I have used all the user name and password used during master 
node configuration. I am clueless on what user name and password to be 
used or from where it can be configured.

I feel, I am making some silly mistake. Please, help me to understand this.

Best regards,

Ranjeet Rai

caos-request at caoslinux.org wrote:
> Send cAos mailing list submissions to
> 	caos at caoslinux.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> 	http://lists.caosity.org/mailman/listinfo/caos
> or, via email, send a message with subject or body 'help' to
> 	caos-request at caoslinux.org
>
> You can reach the person managing the list at
> 	caos-owner at caoslinux.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of cAos digest..."
>
>
> Today's Topics:
>
>    1. Re: configure diskless OS in CAOS NSA (Arthur Stevens)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 4 May 2009 07:42:47 -0700
> From: "Arthur Stevens" <astevens at infiscale.com>
> Subject: Re: [cAos] configure diskless OS in CAOS NSA
> To: "Community-Assembled Operating System" <caos at caoslinux.org>
> Message-ID: <A7B2FFA10C8C4AAD8746ABF6419A7970 at computer>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
>
> You will need to use perceus (included with caos) to do that. 
> http://www.perceus.org/docs/perceus-userguide-1.5.0.pdf
>
> Best of luck,
>
> Arthur
> ----- Original Message ----- 
> From: <ranjeet.rai at orkash.com>
> To: <caos at caoslinux.org>
> Sent: Monday, May 04, 2009 12:57 AM
> Subject: [cAos] configure diskless OS in CAOS NSA
>
>
>   
>> Hi,
>>
>> I am looking forward to configure diskless in CAOS. Please, help me with
>> any technical documentation, if possible. What is the procedure to
>> configure this where I want to RUN my OS using a ram disk in the client
>> machine?
>>
>> Best regards,
>>
>> Ranjeet
>> _______________________________________________
>> cAos mailing list
>> cAos at caoslinux.org
>> http://lists.caosity.org/mailman/listinfo/caos
>>
>>     
>
>
>
>
> ------------------------------
>
> _______________________________________________
> cAos mailing list
> cAos at caoslinux.org
> http://lists.caosity.org/mailman/listinfo/caos
>
>
> End of cAos Digest, Vol 25, Issue 4
> ***********************************
>
>   



From gas5x at yahoo.com  Tue May  5 08:26:50 2009
From: gas5x at yahoo.com (Grigory Shamov)
Date: Tue, 5 May 2009 08:26:50 -0700 (PDT)
Subject: [cAos] cAos Digest, Vol 25, Issue 4
Message-ID: <20319.14858.qm@web111307.mail.gq1.yahoo.com>


Hi Ranjeet,

Can you ssh to your node, from your root account on your master?
The console root login on the nodes is by default disabled. But for ssh, there are ssh keys.

I understand that for regular users, you might want to have these perceus modules enabled (activated): passwdfile, groupfile, masterauth. 

--
With best regards,
Grigory Shamov
Chemistry,
University of Manitoba

--- On Mon, 5/4/09, ranjeet.rai at orkash.com <ranjeet.rai at orkash.com> wrote:

> From: ranjeet.rai at orkash.com <ranjeet.rai at orkash.com>
> Subject: Re: [cAos] cAos Digest, Vol 25, Issue 4
> To: caos at caoslinux.org
> Date: Monday, May 4, 2009, 6:17 PM
> Dear Arthur,
> 
> Thank you very much for the hint and I have working on the
> same. I have 
> installed and configured perceus on the master node and
> booting a client 
> with PXE enabled. It boot successfully and asks for a user
> name and 
> password. I have used all the user name and password used
> during master 
> node configuration. I am clueless on what user name and
> password to be 
> used or from where it can be configured.
> 
> I feel, I am making some silly mistake. Please, help me to
> understand this.
> 
> Best regards,
> 
> Ranjeet Rai
> 
> caos-request at caoslinux.org
> wrote:
> > Send cAos mailing list submissions to
> > ??? caos at caoslinux.org
> >
> > To subscribe or unsubscribe via the World Wide Web,
> visit
> > ??? http://lists.caosity.org/mailman/listinfo/caos
> > or, via email, send a message with subject or body
> 'help' to
> > ??? caos-request at caoslinux.org
> >
> > You can reach the person managing the list at
> > ??? caos-owner at caoslinux.org
> >
> > When replying, please edit your Subject line so it is
> more specific
> > than "Re: Contents of cAos digest..."
> >
> >
> > Today's Topics:
> >
> >? ? 1. Re: configure diskless OS in CAOS NSA
> (Arthur Stevens)
> >
> >
> >
> ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Mon, 4 May 2009 07:42:47 -0700
> > From: "Arthur Stevens" <astevens at infiscale.com>
> > Subject: Re: [cAos] configure diskless OS in CAOS NSA
> > To: "Community-Assembled Operating System" <caos at caoslinux.org>
> > Message-ID:
> <A7B2FFA10C8C4AAD8746ABF6419A7970 at computer>
> > Content-Type: text/plain; format=flowed;
> charset="iso-8859-1";
> > ??? reply-type=original
> >
> > You will need to use perceus (included with caos) to
> do that. 
> > http://www.perceus.org/docs/perceus-userguide-1.5.0.pdf
> >
> > Best of luck,
> >
> > Arthur
> > ----- Original Message ----- 
> > From: <ranjeet.rai at orkash.com>
> > To: <caos at caoslinux.org>
> > Sent: Monday, May 04, 2009 12:57 AM
> > Subject: [cAos] configure diskless OS in CAOS NSA
> >
> >
> >???
> >> Hi,
> >>
> >> I am looking forward to configure diskless in
> CAOS. Please, help me with
> >> any technical documentation, if possible.. What is
> the procedure to
> >> configure this where I want to RUN my OS using a
> ram disk in the client
> >> machine?
> >>
> >> Best regards,
> >>
> >> Ranjeet
> >> _______________________________________________
> >> cAos mailing list
> >> cAos at caoslinux.org
> >> http://lists.caosity.org/mailman/listinfo/caos
> >>
> >>? ???
> >
> >
> >
> >
> > ------------------------------
> >
> > _______________________________________________
> > cAos mailing list
> > cAos at caoslinux.org
> > http://lists.caosity.org/mailman/listinfo/caos
> >
> >
> > End of cAos Digest, Vol 25, Issue 4
> > ***********************************
> >
> >???
> 
> _______________________________________________
> cAos mailing list
> cAos at caoslinux.org
> http://lists..caosity.org/mailman/listinfo/caos
> 


      



From gas5x at yahoo.com  Tue May  5 13:12:14 2009
From: gas5x at yahoo.com (gas5x at yahoo.com)
Date: Tue, 5 May 2009 13:12:14 -0700 (PDT)
Subject: [cAos] hybridization again
Message-ID: <548403.2112.qm@web111306.mail.gq1.yahoo.com>


Dear Caos Users,

I've tried to understand the Hybridization concept, but somehow failed. :-(

The idea of having chunks of OS not in RAM but on exported system looks very attractive to me: I need Python and Perl on my compute nodes. They come with many little additional components, thus installation of an additional copy of Perl or Python in an exported directory like /usr/local likely to be quite troublesome to maintain. 

Having a single rpm-based installation on the server for all this stuff looks more attractive.

The Hybridization file of my capsule, /etc/perceus/vnfs/caos-nsa-node-1.0.8-1.stateless.x86_64, as well as the documentation, contains warnings ("you can NOT hybridize the directory that you configured to be the local state directory when Perceus was compiled".) But I cant find a guide on what and how can I hybridize.

Could someone advice me, or point to a piece of documentation -- how do I hybridize, what steps are to be done? Thank you!


--
With best regards,
Grigory Shamov
Chemistry,
University of Manitoba




      


From allen at up-link.net  Wed May  6 11:07:38 2009
From: allen at up-link.net (Allen)
Date: Wed, 6 May 2009 13:07:38 -0500
Subject: [cAos] SpamAssassin and cPanel
Message-ID: <25938a300905061107i75a9a300p732795042d6a4422@mail.gmail.com>

I need to block Windows executables as attachments. The server has
several domains hosted on it and we use cPanel to administer the
server and the domains.
There seems to be a configuration file somewhere in

/usr/lib/perl5/site_perl/5.8.8/Mail/SpamAssassin]

that needs  to be changed but I haven't found it after a couple of
days looking a FAQs and sample configurations.

Any assistance would be appreciated.

Allen
Up-Link Internet


From astevens at infiscale.com  Wed May  6 12:07:23 2009
From: astevens at infiscale.com (Arthur Stevens)
Date: Wed, 6 May 2009 12:07:23 -0700
Subject: [cAos] SpamAssassin and cPanel
References: <25938a300905061107i75a9a300p732795042d6a4422@mail.gmail.com>
Message-ID: <2109409BCB504EFDA894B9A6052E4CB4@computer>

If using Cpanel, I would ask them since they move stuff to a non standard 
dir and it likely is using their spamassasin than the package for Caos. They 
even use their own perl packages and stuff.

SpamAssasin would be used to set a flag anyways, not actually block stuff. 
That would be your mta, such as qmail. Spamassin could set a flag in the 
mail so it could get filtered elsewhere though.

A Link off google explaining some of this is at 
http://www.nabble.com/Rule-to-block-link-to-*.zip-*.exe-*.scr-...-td18779501.html

Best of luck,

Arthur



----- Original Message ----- 
From: "Allen" <allen at up-link.net>
To: <caos at caoslinux.org>
Sent: Wednesday, May 06, 2009 11:07 AM
Subject: [cAos] SpamAssassin and cPanel


>I need to block Windows executables as attachments. The server has
> several domains hosted on it and we use cPanel to administer the
> server and the domains.
> There seems to be a configuration file somewhere in
>
> /usr/lib/perl5/site_perl/5.8.8/Mail/SpamAssassin]
>
> that needs  to be changed but I haven't found it after a couple of
> days looking a FAQs and sample configurations.
>
> Any assistance would be appreciated.
>
> Allen
> Up-Link Internet
> _______________________________________________
> cAos mailing list
> cAos at caoslinux.org
> http://lists.caosity.org/mailman/listinfo/caos
>