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  • Committer: Lee Trager
  • Date: 2015-08-31 20:46:57 UTC
  • mto: This revision was merged to the branch mainline in revision 231.
  • Revision ID: lee.trager@canonical.com-20150831204657-w80pe2wxsjsq9zba
Add import subcommnad for CentOS

The import command polls a specified URL containing a SHA256SUM file
containing qcow2 files ready for cloud deployments. meph2-util then downloads
the images, ensures all MAAS dependencies are installed, converts them into
root-tgz files and creates the simplestream.

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bin/maas-qcow2targz
 
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#!/bin/bash -e
 
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if [ $# -ne 3 ] && [ $# -ne 4 ]; then
 
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    echo "Usage: $0 <URL> <SHA256> <out file> [curtin file path]"
 
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    exit 1
 
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fi
 
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URL=$1
 
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IMG_NAME=$(basename $URL)
 
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SHA256=$2
 
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if [ $(dirname $3) == "." ]; then
 
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    OUT="${PWD}/${3}"
 
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else
 
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    OUT=$3
 
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fi
 
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CURTIN_PATH=$4
 
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if [ ! -f $URL ]; then
 
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    IMG_PATH=/tmp/$IMG_NAME
 
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    wget --continue $URL -O $IMG_PATH
 
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else
 
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    IMG_PATH=$URL
 
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fi
 
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echo "Checking given sha256sum..."
 
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if [ $(sha256sum $IMG_PATH | awk ' { print $1 } ') != $SHA256 ]; then
 
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    echo "Error: SHA256 of $IMG_PATH != $SHA256"
 
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    exit 1
 
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fi
 
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if [ $(file $IMG_PATH | grep -c 'XZ compressed data') -gt 0 ]; then
 
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    echo "Decompressing image..."
 
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    NEW_IMG_PATH=${IMG_PATH%%'.xz'}
 
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    [ -f "$NEW_IMG_PATH" ] && rm $NEW_IMG_PATH
 
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    unxz $IMG_PATH
 
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    IMG_PATH=${NEW_IMG_PATH}
 
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fi
 
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echo "Mounting image..."
 
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sudo modprobe nbd max_path=8
 
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sudo qemu-nbd -c /dev/nbd0 $IMG_PATH
 
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mnt_point=$(mktemp -d '/tmp/maas-qcow2targz-XXX')
 
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sudo mount /dev/nbd0p1 $mnt_point
 
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if [ -d "$CURTIN_PATH" ]; then
 
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    sudo mkdir -p $mnt_point/curtin
 
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    sudo cp $CURTIN_PATH/* $mnt_point/curtin/
 
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    sudo chmod +x $mnt_point/curtin/*
 
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fi
 
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# CentOS 7 removed python-oauth which is required for cloud-init to
 
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# authenticate with the MAAS metadata service. Until cloud-init from CentOS
 
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# supports python-oauth2 we need to pull python-oauth from EPEL7-testing
 
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if [ -f "${mnt_point}/etc/os-release" ] && \
 
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    [ $(grep -c "centos:7" "${mnt_point}/etc/os-release") -ge 1 ]; then
 
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    echo "CentOS 7 detected! Adding python-oauth for MAAS cloud-init..."
 
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    wget \
 
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        https://kojipkgs.fedoraproject.org//packages/python-oauth/1.0.1/10.el7/noarch/python-oauth-1.0.1-10.el7.noarch.rpm \
 
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        -O ${mnt_point}/tmp/python-oauth-1.0.1-10.el7.noarch.rpm
 
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    sudo chroot ${mnt_point} \
 
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        /bin/bash -c "rpm -ivh /tmp/python-oauth-1.0.1-10.el7.noarch.rpm"
 
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    rm ${mnt_point}/tmp/python-oauth-1.0.1-10.el7.noarch.rpm
 
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fi
 
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mkdir -p $(dirname $OUT)
 
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echo "Taring up image contents..."
 
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pushd $mnt_point
 
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sudo tar -czf $OUT .
 
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popd
 
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echo "Cleaning up..."
 
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sudo umount $mnt_point
 
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rmdir $mnt_point
 
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sudo qemu-nbd -d /dev/nbd0
 
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rm $IMG_PATH
 
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echo "Done!"