devstack源碼分析

# Additional repos
# ================

# Some distros need to add repos beyond the defaults provided by the vendor
# to pick up required packages.

# The Debian Wheezy official repositories do not contain all required packages,
# add gplhost repository.
if [[ "$os_VENDOR" =~ (Debian) ]]; then
    echo 'deb http://archive.gplhost.com/debian grizzly main' | sudo tee /etc/apt/sources.list.d/gplhost_wheezy-backports.list
    echo 'deb http://archive.gplhost.com/debian grizzly-backports main' | sudo tee -a /etc/apt/sources.list.d/gplhost_wheezy-backports.list
    apt_get update
    apt_get install --force-yes gplhost-archive-keyring
fi

if [[ is_fedora && $DISTRO =~ (rhel6) ]]; then
    # Installing Open vSwitch on RHEL6 requires enabling the RDO repo.
    RHEL6_RDO_REPO_RPM=${RHEL6_RDO_REPO_RPM:-"http://rdo.fedorapeople.org/openstack/openstack-grizzly/rdo-release-grizzly-3.noarch.rpm"}
    RHEL6_RDO_REPO_ID=${RHEL6_RDO_REPO_ID:-"openstack-grizzly"}
    if ! yum repolist enabled $RHEL6_RDO_REPO_ID | grep -q $RHEL6_RDO_REPO_ID; then
        echo "RDO repo not detected; installing"
        yum_install $RHEL6_RDO_REPO_RPM || \
            die $LINENO "Error installing RDO repo, cannot continue"
    fi

    # RHEL6 requires EPEL for many Open Stack dependencies
    RHEL6_EPEL_RPM=${RHEL6_EPEL_RPM:-"http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm"}
    if ! yum repolist enabled epel | grep -q 'epel'; then
        echo "EPEL not detected; installing"
        yum_install ${RHEL6_EPEL_RPM} || \
            die $LINENO "Error installing EPEL repo, cannot continue"
    fi
fi