Fix CentOS 6.5 cloud image for openstack resize
Change-Id: Ib8795703e3a812a0cc7a681a78380e53b3f0e689 Closes-bug: #1304100
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iberezovskiy
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1cdbb44856
@ -1,23 +1,56 @@
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We have CentOS 6.4 and 6.5 cloud images. Recommended is CentOS 6.5 (http://sahara-files.mirantis.com/CentOS-6.5-cloud-init.qcow2).
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For preparing your own CentOS cloud image with pre-installed cloud-init you should follow this guide:
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`CentOS cloud image. <http://docs.openstack.org/image-guide/content/centos-image.html>`_ Use the latest version of cloud-init package from `testing repository <http://pkgs.org/centos-6/epel-testing-i386/cloud-init-0.7.4-2.el6.noarch.rpm.html>`_
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Prepare your own CentOS cloud image:
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In the end you should check installation of cloud-init package.
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You should mount your image and check some files. Follow this example to mount cloud image using qemu:
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1. Create disk image with qcow2 format
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.. sourcecode:: bash
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sudo modprobe nbd max_part=63
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sudo qemu-nbd -c /dev/nbd0 CentOS_image_name.qcow2
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sudo partprobe /dev/nbd0
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sudo mount /dev/nbd0p1 /mnt/qemu
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sudo chroot /mnt/qemu
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qemu-img create -f qcow2 -o preallocation=metadata /tmp/centos-6-cloud.qcow2 2G
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Check files:
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2. Install CentOS, You should use one partition and no swap. Get netinstall ISO from http://isoredirect.centos.org/centos/6/isos/x86_64/.
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1. File '/etc/cloud/cloud.cfg' should contain these lines:
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.. sourcecode:: bash
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virt-install --name=centos-6-cloud --disk path=/tmp/centos-6-cloud.qcow2,format=qcow2 -r 1024 --vcpus=1 --hvm -c /tmp/CentOS-6.5-x86_64-netinstall.iso
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3. Login into your new image and modify '/etc/sysconfig/network-scripts/ifcfg-eth0' to look like this
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.. sourcecode:: bash
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DEVICE="eth0"
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BOOTPROTO="dhcp"
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NM_CONTROLLED="no"
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ONBOOT="yes"
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TYPE="Ethernet"
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4. Add EPEL repository and update OS
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.. sourcecode:: bash
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wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
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rpm -ivh epel-release-6-8.noarch.rpm
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5. Install cloud-utils and cloud-init
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.. sourcecode:: bash
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yum install cloud-utils, cloud-init
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6. Download 'centos-image-mod.sh' and 'init-part' together in same directory, run 'centos-image-mod.sh'. This will modify initrd and grub.conf.
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.. sourcecode:: bash
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git clone https://github.com/jaryn/centos-image-resize
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cd centos-image-resize && ./centos-image-mod.sh
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6.1. Edit '/boot/grub/grub.conf', check if everything is OK. Also, may not be a bad idea to set timeout to 0.
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7. Delete '/etc/udev/rules.d/70-persistent-net.rules', this will be auto created during boot. Don't forget this, since you won't have functional network when you bring this image up on Openstack.
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8. Check files:
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File '/etc/cloud/cloud.cfg' should contain these lines:
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.. sourcecode:: cfg
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@ -31,4 +64,17 @@ Check files:
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Add them if they are not exist.
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2. File '/etc/fstab'. Check that fifth and sixth fields contain value '0'.
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File '/etc/fstab'. Check that fifth and sixth fields contain value '0'.
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9. Power down your virtual Centos
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10. Compress qcow2 image with
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.. sourcecode:: bash
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qemu-img convert -c /tmp/centos-6-cloud.qcow2 -O qcow2 /tmp/centos.qcow2
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Image /tmp/centos.qcow2 is now ready for upload to Openstack
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`Source for this doc <http://lists.openstack.org/pipermail/openstack-operators/2013-June/003131.html>`_
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@ -268,9 +268,7 @@ if [ -z "$PLUGIN" -o "$PLUGIN" = "vanilla" ]; then
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# CentOS cloud image:
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# - Disable including 'base' element for CentOS
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# - Export link and filename for CentOS cloud image to download
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# - Patameter 'DIB_IMAGE_SIZE' should be specified for CentOS only
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if [ -z "$IMAGE_TYPE" -o "$IMAGE_TYPE" = "centos" ]; then
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export DIB_IMAGE_SIZE=${IMAGE_SIZE:-"10"}
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# Read Create_CentOS_cloud_image.rst to know how to create CentOS image in qcow2 format
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export BASE_IMAGE_FILE="CentOS-6.5-cloud-init.qcow2"
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export DIB_CLOUD_IMAGES="http://sahara-files.mirantis.com"
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@ -293,7 +291,7 @@ if [ -z "$PLUGIN" -o "$PLUGIN" = "vanilla" ]; then
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disk-image-create $centos_elements_sequence -n -o $centos_image_name
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mv $centos_image_name.qcow2 ../
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fi
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unset BASE_IMAGE_FILE DIB_IMAGE_SIZE DIB_CLOUD_IMAGES
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unset BASE_IMAGE_FILE DIB_CLOUD_IMAGES
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fi
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fi
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@ -405,8 +403,6 @@ if [ -z "$PLUGIN" -o "$PLUGIN" = "cloudera" ]; then
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fi
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if [ -z "$IMAGE_TYPE" -o "$IMAGE_TYPE" = "centos" ]; then
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export DIB_IMAGE_SIZE=${IMAGE_SIZE:-"20"}
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# CentOS cloud image:
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# - Disable including 'base' element for CentOS
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# - Export link and filename for CentOS cloud image to download
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@ -419,7 +415,7 @@ if [ -z "$PLUGIN" -o "$PLUGIN" = "cloudera" ]; then
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disk-image-create $cloudera_elements_sequence -n -o $cloudera_centos_image_name
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mv $cloudera_centos_image_name.qcow2 ../
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unset BASE_IMAGE_FILE DIB_IMAGE_SIZE DIB_CLOUD_IMAGES
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unset BASE_IMAGE_FILE DIB_CLOUD_IMAGES
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fi
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fi
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