[Users] How to pxeboot ovrit node into memory automatically?

David Li david_li at sbcglobal.net
Tue Dec 17 22:24:02 UTC 2013


Hi Fabiand,

I have a iSCSI partition on my stateless node. But the problem is I can't format the partition. The same partition can be formatted and mounted on a regular machine without problems. 

[root at localhost ~]# mkfs.ext3 /dev/sda
mke2fs 1.42.7 (21-Jan-2013)
/dev/sda is entire device, not just one partition!
Proceed anyway? (y,n) y
/dev/sda is apparently in use by the system; will not make a filesystem here!


The error message doesn't seem to make sense as the iSCSI partition isn't used by any other machine.  

Any idea why this isn't working in a stateless node? 

David



>________________________________
> From: Fabian Deutsch <fabiand at redhat.com>
>To: David Li <david_li at sbcglobal.net> 
>Cc: "users at ovirt.org" <users at ovirt.org> 
>Sent: Thursday, December 12, 2013 7:40 AM
>Subject: Re: [Users] How to pxeboot ovrit node into memory automatically?
> 
>
>Am Mittwoch, den 11.12.2013, 17:32 -0800 schrieb David Li:
>> Hi Fabian,
>> 
>> I booted the new node stateless. But how can connect to it from ovirt
>> engine cli? The cli asks for three things: URL, user name and
>> password. I am not sure how to put them on the kernel boot option
>> line.
>> 
>> David
>> 
>> 
>> 
>
>Hey David,
>
>please take a look here to find the correct cmdline:
>https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Hypervisor_Deployment_Guide/sect-Deployment_Guide-Installing_Red_Hat_Enterprise_Virtualization_Hypervisors-RHEV_Hypervisor_Kernel_Parameters_and_Automated_Installation.html
>
>- fabian
>
>> 
>> ______________________________________________________________________
>> From: Fabian Deutsch <fabiand at redhat.com>; 
>> To: David Li <david_li at sbcglobal.net>; 
>> Cc: users at ovirt.org <users at ovirt.org>; 
>> Subject: Re: [Users] How to pxeboot ovrit node into memory
>> automatically? 
>> Sent: Wed, Dec 11, 2013 8:00:40 AM 
>> 
>> 
>> Am Dienstag, den 10.12.2013, 16:00 -0800 schrieb David Li:
>> > Hi Fabian,
>> > 
>> > 
>> > Does the stateless ovirt node have the VDSM built-in? 
>> 
>> Hey David,
>> 
>> stateless is a feature or a special mode of oVirt Node which is also
>> available on the "oVirt Node for oVirt Engine" image [1].
>> But please note that you will have to approve the Node in Engine after
>> each reboot if you use the stateless feature. This bug [2] might also
>> tackle the problem of a stateless Node.
>> 
>> - fabian
>> 
>> --
>> [1]
>> http://resources.ovirt.org/releases/3.3/iso/ovirt-node-iso-3.0.3-1.1.vdsm.fc19.iso
>> [2] https://bugzilla.redhat.com/show_bug.cgi?id=875088
>> 
>> > 
>> > David
>> > 
>> >        
>> >
>> ______________________________________________________________
>> >        From: Fabian Deutsch <fabiand at redhat.com>
>> >        To: David Li <david_li at sbcglobal.net> 
>> >        Cc: "users at ovirt.org" <users at ovirt.org> 
>> >        Sent: Thursday, December 5, 2013 11:47 PM
>> >        Subject: Re: [Users] How to pxeboot ovrit node into memory
>> >        automatically?
>> >        
>> >        
>> >        Am Donnerstag, den 05.12.2013, 16:30 -0800 schrieb David Li:
>> >        > Hi Fabian,
>> >        > 
>> >        > I think the bad route is a link local route 169.254.0.0/16.
>> >        I am not quite sure if it's a real bug but in my case I have
>> >        to remove this route.
>> >        > Also I am using ramdisk based node without a local disk.
>> Can
>> >        anything be persisted? 
>> >        
>> >        Hey David,
>> >        
>> >        when you refer to stateless mode, then no, nothing can be
>> >        persisted.
>> >        Regarding the bug - Please provide the whole cmdline you are
>> >        using to
>> >        boot the node, to give me a chance to reproduce it.
>> >        
>> >        - fabian
>> >        
>> >        > David
>> >        > 
>> >        > 
>> >        > 
>> >        > ----- Original Message -----
>> >        > > From: Fabian Deutsch <fabiand at redhat.com>
>> >        > > To: David Li <david_li at sbcglobal.net>
>> >        > > Cc: "users at ovirt.org" <users at ovirt.org>
>> >        > > Sent: Wednesday, December 4, 2013 11:17 AM
>> >        > > Subject: Re: [Users] How to pxeboot ovrit node into
>> memory
>> >        automatically?
>> >        > > 
>> >        > > Am Montag, den 02.12.2013, 13:53 -0800 schrieb David Li:
>> >        > >>  Hi Fabian,
>> >        > >> 
>> >        > >>  Everytime the ovirt node boots up, it adds a route
>> entry
>> >        that I have to 
>> >        > > manually remove. Otherwise it messed up my routing. 
>> >        > >>  How do I modify the boot scripts to automatically
>> remove
>> >        it?
>> >        > > 
>> >        > > Hey David,
>> >        > > 
>> >        > > could you file a bug for that route problem?
>> >        > > 
>> >        > > You can try the following workaround:
>> >        > > 
>> >        > > # Create /etc/rc.d/rc.local with the commands to run
>> >        > > $ vi /etc/rc.d/rc.local
>> >        > > $ chmod a+x /etc/rc.d/rc.local
>> >        > > $ persist /etc/rc.d/rc.local
>> >        > > 
>> >        > > /etc/rc.d/rc.local should then be run on every boot.
>> >        > > 
>> >        > > - fabian
>> >        > > 
>> >        > >>  ----- Original Message -----
>> >        > >>  > From: Fabian Deutsch <fabiand at redhat.com>
>> >        > >>  > To: David Li <david_li at sbcglobal.net>
>> >        > >>  > Cc: "users at ovirt.org" <users at ovirt.org>
>> >        > >>  > Sent: Monday, October 28, 2013 7:45 AM
>> >        > >>  > Subject: Re: [Users] How to pxeboot ovrit node into
>> >        memory 
>> >        > > automatically?
>> >        > >>  > 
>> >        > >>  > Am Montag, den 28.10.2013, 07:42 -0700 schrieb David
>> >        Li:
>> >        > >>  >> 
>> >        > >>  >>  Hi Fabian,
>> >        > >>  >> 
>> >        > >>  >>  Yes rootpwd worked too! Thanks.
>> >        > >>  >> 
>> >        > >>  >>  Two new problems:
>> >        > >>  >> 
>> >        > >>  >>  But I found there is no networking for the
>> stateless
>> >        node.
>> >        > >>  >>  What kernel boot options are used to either use
>> DHCP
>> >        or 
>> >        > > statically 
>> >        > >>  > configure the IP address for an interface on the
>> node?
>> >        > >>  >> 
>> >        > >>  >>  I also need to have the sshd enabled. Is there a
>> >        kernel option 
>> >        > > for that?
>> >        > >>  > 
>> >        > >>  > Hey David,
>> >        > >>  > 
>> >        > >>  > here you can find all the supported boot params in
>> >        ovirt node:
>> >        > >>  > 
>> >        > >
>> >
>> http://gerrit.ovirt.org/gitweb?p=ovirt-node.git;a=blob;f=scripts/ovirt-init-functions.sh.in;h=c4280caefb89c77afc1e8bec8c925aa7f3039733;hb=HEAD#l214
>> >        > >>  > 
>> >        > >>  > Greetings
>> >        > >>  > fabian
>> >        > >>  > 
>> >        > >>  >>  David
>> >        > >>  >> 
>> >        > >>  >> 
>> >        > >>  >> 
>> >        > >>  >>  ----- Original Message -----
>> >        > >>  >>  > From: Fabian Deutsch <fabiand at redhat.com>
>> >        > >>  >>  > To: David Li <david_li at sbcglobal.net>
>> >        > >>  >>  > Cc: "users at ovirt.org" <users at ovirt.org>
>> >        > >>  >>  > Sent: Friday, October 25, 2013 9:10 AM
>> >        > >>  >>  > Subject: Re: [Users] How to pxeboot ovrit node
>> >        into memory 
>> >        > >>  > automatically?
>> >        > >>  >>  > 
>> >        > >>  >>  > Am Freitag, den 25.10.2013, 08:57 -0700 schrieb
>> >        David Li:
>> >        > >>  >>  >>  Hi Fabian,
>> >        > >>  >>  >> 
>> >        > >>  >>  >>  That kernel option worked for me!  The node is
>> >        booted 
>> >        > > up in RAM. 
>> >        > >>  > Thanks!
>> >        > >>  >>  >> 
>> >        > >>  >>  >>  My next question is:
>> >        > >>  >>  >> How do I specify the root login and passwd as
>> >        boot 
>> >        > > parameters? 
>> >        > >>  >>  > 
>> >        > >>  >>  > Hey David.
>> >        > >>  >>  > 
>> >        > >>  >>  > Nice that it worked! Were you able to register to
>> >        the 
>> >        > > Engine?
>> >        > >>  >>  > 
>> >        > >>  >>  > You can use the adminpw= and rootpw= kernel
>> >        arguments to set 
>> >        > > 
>> >        > >>  > passwords.
>> >        > >>  >>  > use
>> >        > >>  >>  > $ openssl passwd -salt 42
>> >        > >>  >>  > to create one or two passwords
>> >        > >>  >>  > 
>> >        > >>  >>  > Greetings
>> >        > >>  >>  > fabian
>> >        > >>  >>  > 
>> >        > >>  >>  >>  David
>> >        > >>  >>  >> 
>> >        > >>  >>  >> 
>> >        > >>  >>  >> 
>> >        > >>  >>  >> 
>> >        > >>  >>  >>  ----- Original Message -----
>> >        > >>  >>  >>  > From: Fabian Deutsch <fabiand at redhat.com>
>> >        > >>  >>  >>  > To: David Li <david_li at sbcglobal.net>
>> >        > >>  >>  >>  > Cc: "users at ovirt.org" 
>> >        > > <users at ovirt.org>
>> >        > >>  >>  >>  > Sent: Thursday, October 24, 2013 11:47 PM
>> >        > >>  >>  >>  > Subject: Re: [Users] How to pxeboot ovrit
>> >        node 
>> >        > > into memory 
>> >        > >>  >>  > automatically?
>> >        > >>  >>  >>  > 
>> >        > >>  >>  >>  > Am Donnerstag, den 24.10.2013, 16:26 -0700
>> >        schrieb 
>> >        > > David Li:
>> >        > >>  >>  >>  >>  Hi,
>> >        > >>  >>  >>  >> 
>> >        > >>  >>  >>  >>  I was following the instructions at 
>> >        > >>  >>  > http://www.ovirt.org/Node_PXE. My goal 
>> >        > >>  >>  >>  > is to use pxeboot (iPXE) to boot the node
>> >        entirely 
>> >        > > into RAM 
>> >        > >>  > with 
>> >        > >>  >>  > rootfs. What I 
>> >        > >>  >>  >>  > got now is an installation screen which
>> >        requires a 
>> >        > > local 
>> >        > >>  > storage. My 
>> >        > >>  >>  > system has 
>> >        > >>  >>  >>  > no disk and this doesn't quite work for me. 
>> >        > >>  >>  >>  >> 
>> >        > >>  >>  >>  >>  What's are the kernel parameters I need 
>> >        > > to use to 
>> >        > >>  > boot the 
>> >        > >>  >>  > node into 
>> >        > >>  >>  >>  > RAM automatically?  I am OK as the first step
>> >        with 
>> >        > > a 
>> >        > >>  > stateless node. 
>> >        > >>  >>  >>  > 
>> >        > >>  >>  >>  > Hey David,
>> >        > >>  >>  >>  > 
>> >        > >>  >>  >>  > the stateless mode is currently not
>> >        completely 
>> >        > > working with 
>> >        > >>  > oVirt
>> >        > >>  >>  >>  > Engine. That means a Node needs to be
>> >        approved 
>> >        > > each time it 
>> >        > >>  > boots into
>> >        > >>  >>  >>  > the stateless mode.
>> >        > >>  >>  >>  > The stateless mode can be entered by
>> >        appending 
>> >        > > stateless to 
>> >        > >>  > the 
>> >        > >>  >>  > default
>> >        > >>  >>  >>  > kernel arguments.
>> >        > >>  >>  >>  > 
>> >        > >>  >>  >>  > Greetings
>> >        > >>  >>  >>  > fabian
>> >        > >>  >>  >>  > 
>> >        > >>  >>  > 
>> >        > >>  > 
>> >        > > 
>> >        
>> >        
>> >        
>> >        
>> 
>> 
>
>
>
>
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