openstack-ansible/scripts/os-cmd
Kyle L. Henderson 16127335f4 Fix os_cmd script for tty
Add the '-1' parameter to lxc-ls so each container is listed on a
single line, otherwise multiple container names were being listed
on a single line and causing the command to fail when in a tty.

Also use the '--filter' parameter to return only the utility
containers rather than having lxc-ls process and return each
container.

Change-Id: Ifcf1f13392d17464a088ce2928f434387ca39365
2017-05-16 13:08:39 -05:00

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#!/usr/bin/env bash
#
# Copyright 2016, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# What this script is for:
# This script runs the supplied commands in the utility container on
# localhost. It simplifies performing actions from the utility
# container. It's most useful for use with an AIO installation.
__check_cmd_avail ()
{
if [ "z$(which $1)" == "z" ]; then
echo "The command '$1' could not be found, exiting"
exit 1
fi
}
# Make sure we're running as root
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root. Exiting..." 2>&1
exit 1
fi
# Ensure a command was provided
if [ $# -eq 0 ]; then
echo "Usage: $(basename $0) <command>"
exit 1
fi
LXCATTACH="lxc-attach"
LXCLS="lxc-ls"
# Verify we have the commands we need
__check_cmd_avail ${LXCATTACH}
__check_cmd_avail ${LXCLS}
# Find the first utility container to execute in
UTIL=$(${LXCLS} -1 --filter utility | head -n 1)
if [ "z${UTIL}" == "z" ]; then
echo "*** Couldn't find a utility container. Exiting..."
exit 1
fi
${LXCATTACH} -n ${UTIL} -- bash -c ". /root/openrc && $*"