[Rdo-list] Automatic resizing of root partitions in RDO Icehouse
St. George, Allan L.
ALLAN.L.ST.GEORGE at leidos.com
Tue May 13 13:17:25 UTC 2014
Great, I’m glad it helped. I wanted my spawn to automatically join/report to foreman, which is why I included it on my image.
I’m not familiar with RDO docs, but I wouldn’t have any problem with the document being posted.
V/R,
Allan
From: Elías David [mailto:elias.moreno.tec at gmail.com]
Sent: Saturday, May 10, 2014 12:59 PM
To: St. George, Allan L.
Cc: Kashyap Chamarthy; rdo-list at redhat.com
Subject: Re: [Rdo-list] Automatic resizing of root partitions in RDO Icehouse
Hey, thanks! this method indeed worked nicely with CentOS 6.5 image in RDO Icehouse! :D
I didn't do the puppet part since I've no puppet server to test but it wasn't needed, also I used virt-sparcify instead of step 13 qemu-image convert
I also tried the oz-install method but it failed everytime with the following exception:
"raise oz.OzException.OzException("No disk activity in %d seconds, failing. %s" % (inactivity_timeout, screenshot_text))"
No matter the install type (url or iso) and didn't matter creating this in different machines with different specs (more ram, cpu, fast disks...)
Anyhow, thank you all for the help and tips! very appreciated ;)
Any chance to include this method in RDO docs?
On Fri, May 9, 2014 at 8:34 AM, St. George, Allan L. <ALLAN.L.ST.GEORGE at leidos.com<mailto:ALLAN.L.ST.GEORGE at leidos.com>> wrote:
I'm sure someone could make this better, but this is what I've been using and it works well:
V/R,
Allan
1. Create disk image with QCOW2 format
qemu-img create -f qcow2 /tmp/centos-6.5-working.qcow2 10G
2. Install CentOS; Install onto a single ext4 partition mounted to “/” (no /boot, /swap, etc.)
virt-install --virt-type {kvm or qemu} --name centos-6.5 --ram 1024 \
--cdrom=/tmp/CentOS-6.5-x86_64-minimal.iso \
--disk /tmp/centos-6.5-working.qcow2,format=qcow2 \
--network network=default \
--graphics vnc,listen=0.0.0.0 --noautoconsole \
--os-type=linux --os-variant=rhel6
3. Eject the disk and reboot the virtual machine
virsh attach-disk --type cdrom --mode readonly centos-6.5 "" hdc
virsh destroy centos-6.5
virsh start centos-6.5
4. After reboot, login into your new image and modify '/etc/sysconfig/network-scripts/ifcfg-eth0' to look like this
DEVICE="eth0"
BOOTPROTO="dhcp"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
5. Add EPEL repository and update OS
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh https://yum.puppetlabs.com/el/6/products/x86_64/puppetlabs-release-6-7.noarch.rpm
6. Update yum and install cloud-init
yum -y update
yum install cloud-utils cloud-init parted git
cd /tmp
git clone https://github.com/flegmatik/linux-rootfs-resize.git (installed in place of cloud-initramfs-tools)
cd linux-rootfs-resize
./install
Edit /etc/cloud/cloud.cfg
Add the line:
user: ec2-user
Under “cloud_init_modules”, add:
- resolv-conf
7. Install and configure puppet
yum install puppet
edit /etc/hosts and add entry for foreman
edit /etc/puppet/puppet.conf and add the following lines:
[main]
pluginsync = true
[agent]
runinterval=1800
server = {server.domain}
chkconfig puppet on
8. Enable the instance to access the metadata service
echo "NOZEROCONF=yes" >> /etc/sysconfig/network
9. Configure /etc/ssh/sshd_config
Uncomment the following lines:
PermitRootLogin yes
PasswordAuthentication yes
10. Power down your virtual Centos machine
11. Clean up the virtual machine of MAC address, etc.
virt-sysprep -d centos-6.5
12. Undefine the libvirt domain
virsh undefine centos-6.5
13. Compress QCOW2 image with
qemu-img convert -c /tmp/centos-6.5-working.qcow2 -O qcow2 /tmp/centos.qcow2
Image /tmp/centos-6.5.qcow2 is now ready for upload to Openstack
-----Original Message-----
From: Kashyap Chamarthy [mailto:kchamart at redhat.com<mailto:kchamart at redhat.com>]
Sent: Wednesday, May 07, 2014 11:49 PM
To: St. George, Allan L.
Cc: rdo-list at redhat.com<mailto:rdo-list at redhat.com>; Elías David
Subject: Re: [Rdo-list] Automatic resizing of root partitions in RDO Icehouse
On Wed, May 07, 2014 at 02:31:43PM +0000, St. George, Allan L. wrote:
> I haven’t had the time to work with Icehouse yet, but I have outlined
> instruction that are used to create Havana CentOS images that resize
> automatically upon spawning via linux-rootfs-resize.
>
> If interested, I’ll forward it along.
That'd be useful. It'd be even better if you could make a quick RDO wiki page[1] that'll be indexed by the search engines.
[1] http://openstack.redhat.com/
PS: If you're a Markdown user, you can convert Markdown -> WikiMedia (RDO uses WikiMedia for wiki) trivially like this:
$ pandoc -f markdown -t Mediawiki foo.md<http://foo.md> -o foo.wiki
>
> From: rdo-list-bounces at redhat.com<mailto:rdo-list-bounces at redhat.com> [mailto:rdo-list-bounces at redhat.com<mailto:rdo-list-bounces at redhat.com>]
> On Behalf Of Elías David Sent: Tuesday, May 06, 2014 12:57 PM To:
> Kashyap Chamarthy Cc: rdo-list at redhat.com<mailto:rdo-list at redhat.com> Subject: Re: [Rdo-list]
> Automatic resizing of root partitions in RDO Icehouse
>
>
> Hi thanks for the answers!
>
> But how is the support right now in OpenStack with centos/fedora
> images regarding the auto resizing during boot? does the disk size set
> in the flavor is respected or not, or does it work only with fedora
> and newer kernels than what CentOS uses...things like that is what I'm
> looking for On May 6, 2014 4:09 AM, "Kashyap Chamarthy"
> <kchamart at redhat.com<mailto:kchamart at redhat.com><mailto:kchamart at redhat.com<mailto:kchamart at redhat.com>>> wrote: On Mon, May
> 05, 2014 at 10:22:26PM -0430, Elías David wrote:
> > Hello all,
> >
> > I would like to know what's the current state of auto resizing the
> > root partition in current RDO Icehouse, more specifically, CentOS
> > and Fedora images.
> >
> > I've read many versions of the story so I'm not really sure what
> > works and what doesn't.
> >
> > For instance, I've read that currently, auto resizing of a CentOS
> > 6.5 image for would require the filesystem to be ext3 and I've also
> > read that auto resizing currently works only with kernels >= 3.8, so
> > what's really the deal with this currently?
> >
> > Also, it's as simple as having cloud-init, dracut-modules-growroot
> > and cloud-initramfs-tools installed on the image or are there any
> > other steps required for the auto resizing to work?
>
>
> I personally find[1] virt-resize (which works the same way on any
> images) very useful when I'd like to do resizing, as it works
> consistent well.
>
> I just tried on a Fedora 20 qcow2 cloud image with these below four
> commands and their complete output.
>
> 1. Examine the root filesystem size _inside_ the cloud image:
>
> $ virt-filesystems --long --all -h -a fedora-latest.x86_64.qcow2
>
> Name Type VFS Label MBR Size Parent /dev/sda1
> filesystem ext4 _/ - 1.9G - /dev/sda1 partition -
> - 83 1.9G /dev/sda /dev/sda device - - -
> 2.0G -
>
> 2. Create a new qcow2 disk of 10G:
>
> $ qemu-img create -f qcow2 -o preallocation=metadata \
> newdisk.qcow2 10G
>
> 3. Perform the resize operation:
>
> $ virt-resize --expand /dev/sda1 fedora-latest.x86_64.qcow2 \
> newdisk.qcow2 Examining fedora-latest.x86_64.qcow2 ... **********
>
> Summary of changes:
>
> /dev/sda1: This partition will be resized from 1.9G to 10.0G. The
> filesystem ext4 on /dev/sda1 will be expanded using the
> 'resize2fs' method.
>
> ********** Setting up initial partition table on newdisk.qcow2 ...
> Copying /dev/sda1 ... 100%
> ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒⟧
> 00:00 Expanding /dev/sda1 using the 'resize2fs' method ...
>
> Resize operation completed with no errors. Before deleting the
> old disk, carefully check that the resized disk boots and works
> correctly.
>
> 4. Examine the root file system size in the new disk (should reflect
> correctly):
>
> $ virt-filesystems --long --all -h -a newdisk.qcow2 Name
> Type VFS Label MBR Size Parent /dev/sda1 filesystem
> ext4 _/ - 10G - /dev/sda1 partition - - 83
> 10G /dev/sda /dev/sda device - - - 10G -
>
>
> Hope that helps.
>
>
> [1]
>
> http://kashyapc.com/2013/04/13/resize-a-fedora-19-guest-with-libguestf
> s-tools/
>
>
>
> -- /kashyap
> _______________________________________________
> Rdo-list mailing list
> Rdo-list at redhat.com<mailto:Rdo-list at redhat.com>
> https://www.redhat.com/mailman/listinfo/rdo-list
--
/kashyap
--
Elías David.
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