openstack-ansible/scripts/scripts-library.sh
Jesse Pretorius 7b10c64007 Change ansible forks used
This patch changes the number of forks used by ansible when
using any of the convenience (and thus gate check) scripts
to the number of processors available on the deployment
system.

The previous values used were found to cause ssh connection
errors and it was found that reducing the number improved
the chances of success.

This patch also removes the forks setting from ansible.conf
so that ansible will use the default value when run in any
other way. This leaves the decision of setting the number
of forks to the deployer, as it should be.

Change-Id: I31ad7353344f7994063127ecfce8f4733769234c
Closes-Bug: #1479812
2015-07-30 15:11:14 +01:00

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#!/usr/bin/env bash
# Copyright 2014, 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.
## Vars ----------------------------------------------------------------------
LINE='----------------------------------------------------------------------'
MAX_RETRIES=${MAX_RETRIES:-5}
MIN_LXC_VG_SIZE_GB=${MIN_LXC_VG_SIZE_GB:-250}
REPORT_DATA=${REPORT_DATA:-""}
ANSIBLE_PARAMETERS=${ANSIBLE_PARAMETERS:-""}
STARTTIME="${STARTTIME:-$(date +%s)}"
# the number of forks is set as the number of CPU's present
FORKS=${FORKS:-$(grep -c ^processor /proc/cpuinfo)}
## Functions -----------------------------------------------------------------
# Used to retry a process that may fail due to random issues.
function successerator() {
set +e
# Get the time that the method was started.
OP_START_TIME="$(date +%s)"
RETRY=0
# Set the initial return value to failure.
false
while [ $? -ne 0 -a ${RETRY} -lt ${MAX_RETRIES} ];do
RETRY=$((${RETRY}+1))
if [ ${RETRY} -gt 1 ];then
$@ -vvvv
else
$@
fi
done
# If max retires were hit, fail.
if [ $? -ne 0 ] && [ ${RETRY} -eq ${MAX_RETRIES} ];then
echo -e "\nHit maximum number of retries, giving up...\n"
exit_fail
fi
# Print the time that the method completed.
OP_TOTAL_SECONDS="$[$(date +%s) - $OP_START_TIME]"
REPORT_OUTPUT="${OP_TOTAL_SECONDS} seconds"
REPORT_DATA+="- Operation: [ $@ ]\t${REPORT_OUTPUT}\tNumber of Attempts [ ${RETRY} ]\n"
echo -e "Run Time = ${REPORT_OUTPUT}"
set -e
}
function install_bits() {
# Use the successerator to run openstack-ansible with
# the appropriate number of forks
successerator openstack-ansible ${ANSIBLE_PARAMETERS} --forks ${FORKS} $@
}
function configure_diskspace() {
# If there are any block devices available other than the one
# used for the root disk, repurpose it for our needs.
MIN_LXC_VG_SIZE_B=$((${MIN_LXC_VG_SIZE_GB} * 1024 * 1024 * 1024))
# only do this if the lxc vg doesn't already exist
if ! vgs lxc > /dev/null 2>&1; then
blk_devices=$(lsblk -nrdo NAME,TYPE | awk '/d[b-z]+ disk/ {print $1}')
for blk_dev in ${blk_devices}; do
# dismount any mount points on the device
mount_points=$(awk "/^\/dev\/${blk_dev}[0-9]* / {print \$2}" /proc/mounts)
for mount_point in ${mount_points}; do
umount ${mount_point}
sed -i ":${mount_point}:d" /etc/fstab
done
# add a vg for lxc
blk_dev_size_b=$(lsblk -nrdbo NAME,TYPE,SIZE | awk "/^${blk_dev} disk/ {print \$3}")
if [ "${blk_dev_size_b}" -gt "${MIN_LXC_VG_SIZE_B}" ]; then
if ! vgs lxc > /dev/null 2>&1; then
parted --script /dev/${blk_dev} mklabel gpt
parted --align optimal --script /dev/${blk_dev} mkpart lxc 0% 80%
part_num=$(parted /dev/${blk_dev} print --machine | awk -F':' '/lxc/ {print $1}')
pvcreate -ff -y /dev/${blk_dev}${part_num}
vgcreate lxc /dev/${blk_dev}${part_num}
fi
# add a vg for cinder volumes, but only if it doesn't already exist
if ! vgs cinder-volumes > /dev/null 2>&1; then
parted --align optimal --script /dev/${blk_dev} mkpart cinder 80% 100%
part_num=$(parted /dev/${blk_dev} print --machine | awk -F':' '/cinder/ {print $1}')
pvcreate -ff -y /dev/${blk_dev}${part_num}
vgcreate cinder-volumes /dev/${blk_dev}${part_num}
fi
else
if ! grep '/var/lib/lxc' /proc/mounts 2>&1; then
parted --script /dev/${blk_dev} mklabel gpt
parted --script /dev/${blk_dev} mkpart lxc ext4 0% 100%
part_num=$(parted /dev/${blk_dev} print --machine | awk -F':' '/lxc/ {print $1}')
# Format, Create, and Mount it all up.
mkfs.ext4 /dev/${blk_dev}${part_num}
mkdir -p /var/lib/lxc
mount /dev/${blk_dev}${part_num} /var/lib/lxc
fi
fi
done
fi
}
function ssh_key_create() {
# Ensure that the ssh key exists and is an authorized_key
key_path="${HOME}/.ssh"
key_file="${key_path}/id_rsa"
# Ensure that the .ssh directory exists and has the right mode
if [ ! -d ${key_path} ]; then
mkdir -p ${key_path}
chmod 700 ${key_path}
fi
if [ ! -f "${key_file}" -a ! -f "${key_file}.pub" ]; then
rm -f ${key_file}*
ssh-keygen -t rsa -f ${key_file} -N ''
fi
# Ensure that the public key is included in the authorized_keys
# for the default root directory and the current home directory
key_content=$(cat "${key_file}.pub")
if ! grep -q "${key_content}" ${key_path}/authorized_keys; then
echo "${key_content}" | tee -a ${key_path}/authorized_keys
fi
}
function loopback_create() {
LOOP_FILENAME=${1}
LOOP_FILESIZE=${2}
LOOP_FILE_TYPE=${3} # thin, thick
LOOP_MOUNT_METHOD=${4} # swap, rc, none
if [ ! -f "${LOOP_FILENAME}" ]; then
if [ "${LOOP_FILE_TYPE}" = "thin" ]; then
truncate -s ${LOOP_FILESIZE} ${LOOP_FILENAME}
elif [ "${LOOP_FILE_TYPE}" = "thick" ]; then
fallocate -l ${LOOP_FILESIZE} ${LOOP_FILENAME} &> /dev/null || \
dd if=/dev/zero of=${LOOP_FILENAME} bs=1M count=$(( ${LOOP_FILESIZE} / 1024 / 1024 ))
else
exit_fail "No valid option ${LOOP_FILE_TYPE} found."
fi
fi
if [ "${LOOP_MOUNT_METHOD}" = "rc" ]; then
if ! losetup -a | grep -q "(${LOOP_FILENAME})$"; then
LOOP_DEVICE=$(losetup -f)
losetup ${LOOP_DEVICE} ${LOOP_FILENAME}
fi
if ! grep -q ${LOOP_FILENAME} /etc/rc.local; then
sed -i "\$i losetup \$(losetup -f) ${LOOP_FILENAME}" /etc/rc.local
fi
fi
if [ "${LOOP_MOUNT_METHOD}" = "swap" ]; then
if ! swapon -s | grep -q ${LOOP_FILENAME}; then
mkswap ${LOOP_FILENAME}
swapon -a
fi
if ! grep -q "^${LOOP_FILENAME} " /etc/fstab; then
echo "${LOOP_FILENAME} none swap loop 0 0" >> /etc/fstab
fi
fi
}
function exit_state() {
set +x
TOTALSECONDS="$[$(date +%s) - $STARTTIME]"
info_block "Run Time = ${TOTALSECONDS} seconds || $(($TOTALSECONDS / 60)) minutes"
if [ "${1}" == 0 ];then
info_block "Status: Success"
else
info_block "Status: Failure"
fi
exit ${1}
}
function exit_success() {
set +x
exit_state 0
}
function exit_fail() {
set +x
log_instance_info
info_block "Error Info - $@"
exit_state 1
}
function print_info() {
PROC_NAME="- [ $@ ] -"
printf "\n%s%s\n" "$PROC_NAME" "${LINE:${#PROC_NAME}}"
}
function info_block(){
echo "${LINE}"
print_info "$@"
echo "${LINE}"
}
function log_instance_info() {
set +x
# Get host information post initial setup and reset verbosity
if [ ! -d "/openstack/log/instance-info" ];then
mkdir -p "/openstack/log/instance-info"
fi
get_instance_info &> /openstack/log/instance-info/host_info_$(date +%s).log
set -x
}
function get_repos_info() {
for i in /etc/apt/sources.list /etc/apt/sources.list.d/*; do
echo -e "\n$i"
cat $i
done
}
# Get instance info
function get_instance_info() {
set +x
info_block 'Current User'
whoami
info_block 'Available Memory'
free -mt || true
info_block 'Available Disk Space'
df -h || true
info_block 'Mounted Devices'
mount || true
info_block 'Block Devices'
lsblk -i || true
info_block 'Block Devices Information'
blkid || true
info_block 'Block Device Partitions'
for i in /dev/xv* /dev/sd* /dev/vd*; do
if [ -b "$i" ];then
parted --script $i print || true
fi
done
info_block 'PV Information'
pvs || true
info_block 'VG Information'
vgs || true
info_block 'LV Information'
lvs || true
info_block 'CPU Information'
which lscpu && lscpu || true
info_block 'Kernel Information'
uname -a || true
info_block 'Container Information'
which lxc-ls && lxc-ls --fancy || true
info_block 'Firewall Information'
iptables -vnL || true
iptables -t nat -vnL || true
iptables -t mangle -vnL || true
info_block 'Network Devices'
ip a || true
info_block 'Network Routes'
ip r || true
info_block 'DNS Configuration'
cat /etc/resolv.conf
info_block 'Trace Path from google'
tracepath 8.8.8.8 -m 5 || true
info_block 'XEN Server Information'
if (which xenstore-read);then
xenstore-read vm-data/provider_data/provider || echo "\nxenstore Read Failed - Skipping\n"
else
echo -e "\nNo xenstore Information\n"
fi
get_repos_info &> /openstack/log/instance-info/host_repo_info_$(date +%s).log || true
dpkg-query --list &> /openstack/log/instance-info/host_packages_info_$(date +%s).log
}
function print_report() {
# Print the stored report data
echo -e "${REPORT_DATA}"
}
## Signal traps --------------------------------------------------------------
# Trap all Death Signals and Errors
trap "exit_fail ${LINENO} $? 'Received STOP Signal'" SIGHUP SIGINT SIGTERM
trap "exit_fail ${LINENO} $?" ERR
## Pre-flight check ----------------------------------------------------------
# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
info_block "This script must be run as root"
exit_state 1
fi
# Check that we are in the root path of the cloned repo
if [ ! -d "etc" -a ! -d "scripts" -a ! -d "playbooks" ]; then
info_block "** ERROR **"
echo "Please execute this script from the root directory of the cloned source code."
echo -e "Example: /opt/os-ansible-deployment/\n"
exit_state 1
fi
## Exports -------------------------------------------------------------------
# Export known paths
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Export the home directory just in case it's not set
export HOME="/root"