devstack/tools/install_prereqs.sh
Davanum Srinivas 51ecf0a869 Introduce a PYTHON env var
* $PYTHON will have the path to python runtime to be used
* Use $PYTHON to run all the scripts

Change-Id: Ib5ab7820fc18cae5e50ea47302b610494197ad47
2017-01-05 18:41:29 -05:00

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#!/usr/bin/env bash
# **install_prereqs.sh**
# Install system package prerequisites
#
# install_prereqs.sh [-f]
#
# -f Force an install run now
FORCE_PREREQ=0
while getopts ":f" opt; do
case $opt in
f)
FORCE_PREREQ=1
;;
esac
done
# If ``TOP_DIR`` is set we're being sourced rather than running stand-alone
# or in a sub-shell
if [[ -z "$TOP_DIR" ]]; then
# Keep track of the DevStack directory
TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
# Import common functions
source $TOP_DIR/functions
# Determine what system we are running on. This provides ``os_VENDOR``,
# ``os_RELEASE``, ``os_PACKAGE``, ``os_CODENAME``
# and ``DISTRO``
GetDistro
# Needed to get ``ENABLED_SERVICES``
source $TOP_DIR/stackrc
# Prereq dirs are here
FILES=$TOP_DIR/files
fi
# Minimum wait time
PREREQ_RERUN_MARKER=${PREREQ_RERUN_MARKER:-$TOP_DIR/.prereqs}
PREREQ_RERUN_HOURS=${PREREQ_RERUN_HOURS:-2}
PREREQ_RERUN_SECONDS=$((60*60*$PREREQ_RERUN_HOURS))
NOW=$(date "+%s")
LAST_RUN=$(head -1 $PREREQ_RERUN_MARKER 2>/dev/null || echo "0")
DELTA=$(($NOW - $LAST_RUN))
if [[ $DELTA -lt $PREREQ_RERUN_SECONDS && -z "$FORCE_PREREQ" ]]; then
echo "Re-run time has not expired ($(($PREREQ_RERUN_SECONDS - $DELTA)) seconds remaining) "
echo "and FORCE_PREREQ not set; exiting..."
return 0
fi
# Make sure the proxy config is visible to sub-processes
export_proxy_variables
# Install Packages
# ================
# Install package requirements
PACKAGES=$(get_packages general,$ENABLED_SERVICES)
PACKAGES="$PACKAGES $(get_plugin_packages)"
if is_ubuntu && echo $PACKAGES | grep -q dkms ; then
# Ensure headers for the running kernel are installed for any DKMS builds
PACKAGES="$PACKAGES linux-headers-$(uname -r)"
fi
install_package $PACKAGES
if [[ -n "$SYSLOG" && "$SYSLOG" != "False" ]]; then
if is_ubuntu || is_fedora; then
install_package rsyslog-relp
elif is_suse; then
install_package rsyslog-module-relp
else
exit_distro_not_supported "rsyslog-relp installation"
fi
fi
if python3_enabled; then
install_python3
export PYTHON=$(which python${PYTHON3_VERSION} 2>/dev/null || which python3 2>/dev/null)
else
export PYTHON=$(which python 2>/dev/null)
fi
# Mark end of run
# ---------------
date "+%s" >$PREREQ_RERUN_MARKER
date >>$PREREQ_RERUN_MARKER