Heat templates for deploying OpenStack
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#!/usr/bin/env python
#
# 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.
# Shell script tool to run puppet inside of the given docker container image.
# Uses the config file at /var/lib/docker-puppet/docker-puppet.json as a source for a JSON
# array of [config_volume, puppet_tags, manifest, config_image, [volumes]] settings
# that can be used to generate config files or run ad-hoc puppet modules
# inside of a container.
import glob
import json
import logging
import os
import subprocess
import sys
import tempfile
import time
import multiprocessing
from paunch import runner as containers_runner
logger = None
RUNNER = containers_runner.DockerRunner(
'docker-puppet')
def get_logger():
global logger
if logger is None:
logger = logging.getLogger()
ch = logging.StreamHandler(sys.stdout)
if os.environ.get('DEBUG', False):
logger.setLevel(logging.DEBUG)
ch.setLevel(logging.DEBUG)
else:
logger.setLevel(logging.INFO)
ch.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s %(levelname)s: '
'%(process)s -- %(message)s')
ch.setFormatter(formatter)
logger.addHandler(ch)
return logger
# this is to match what we do in deployed-server
def short_hostname():
subproc = subprocess.Popen(['hostname', '-s'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
cmd_stdout, cmd_stderr = subproc.communicate()
return cmd_stdout.rstrip()
def pull_image(name):
log.info('Pulling image: %s' % name)
retval = -1
count = 0
while retval != 0:
count += 1
subproc = subprocess.Popen(['/usr/bin/docker', 'pull', name],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
cmd_stdout, cmd_stderr = subproc.communicate()
retval = subproc.returncode
if retval != 0:
time.sleep(3)
log.warning('docker pull failed: %s' % cmd_stderr)
log.warning('retrying pulling image: %s' % name)
if count >= 5:
log.error('Failed to pull image: %s' % name)
break
if cmd_stdout:
log.debug(cmd_stdout)
if cmd_stderr:
log.debug(cmd_stderr)
def match_config_volumes(prefix, config):
# Match the mounted config volumes - we can't just use the
# key as e.g "novacomute" consumes config-data/nova
volumes = config.get('volumes', [])
return sorted([os.path.dirname(v.split(":")[0]) for v in volumes if
v.startswith(prefix)])
def get_config_hash(config_volume):
hashfile = "%s.md5sum" % config_volume
log.debug("Looking for hashfile %s for config_volume %s" % (hashfile, config_volume))
hash_data = None
if os.path.isfile(hashfile):
log.debug("Got hashfile %s for config_volume %s" % (hashfile, config_volume))
with open(hashfile) as f:
hash_data = f.read().rstrip()
return hash_data
def rm_container(name):
if os.environ.get('SHOW_DIFF', None):
log.info('Diffing container: %s' % name)
subproc = subprocess.Popen(['/usr/bin/docker', 'diff', name],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
cmd_stdout, cmd_stderr = subproc.communicate()
if cmd_stdout:
log.debug(cmd_stdout)
if cmd_stderr:
log.debug(cmd_stderr)
log.info('Removing container: %s' % name)
subproc = subprocess.Popen(['/usr/bin/docker', 'rm', name],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
cmd_stdout, cmd_stderr = subproc.communicate()
if cmd_stdout:
log.debug(cmd_stdout)
if cmd_stderr and \
cmd_stderr != 'Error response from daemon: ' \
'No such container: {}\n'.format(name):
log.debug(cmd_stderr)
process_count = int(os.environ.get('PROCESS_COUNT',
multiprocessing.cpu_count()))
log = get_logger()
log.info('Running docker-puppet')
config_file = os.environ.get('CONFIG', '/var/lib/docker-puppet/docker-puppet.json')
# If specified, only this config_volume will be used
config_volume_only = os.environ.get('CONFIG_VOLUME', None)
log.debug('CONFIG: %s' % config_file)
with open(config_file) as f:
json_data = json.load(f)
# To save time we support configuring 'shared' services at the same
# time. For example configuring all of the heat services
# in a single container pass makes sense and will save some time.
# To support this we merge shared settings together here.
#
# We key off of config_volume as this should be the same for a
# given group of services. We are also now specifying the container
# in which the services should be configured. This should match
# in all instances where the volume name is also the same.
configs = {}
for service in (json_data or []):
if service is None:
continue
if isinstance(service, dict):
service = [
service.get('config_volume'),
service.get('puppet_tags'),
service.get('step_config'),
service.get('config_image'),
service.get('volumes', []),
]
config_volume = service[0] or ''
puppet_tags = service[1] or ''
manifest = service[2] or ''
config_image = service[3] or ''
volumes = service[4] if len(service) > 4 else []
if not manifest or not config_image:
continue
log.debug('config_volume %s' % config_volume)
log.debug('puppet_tags %s' % puppet_tags)
log.debug('manifest %s' % manifest)
log.debug('config_image %s' % config_image)
log.debug('volumes %s' % volumes)
# We key off of config volume for all configs.
if config_volume in configs:
# Append puppet tags and manifest.
log.debug("Existing service, appending puppet tags and manifest")
if puppet_tags:
configs[config_volume][1] = '%s,%s' % (configs[config_volume][1],
puppet_tags)
if manifest:
configs[config_volume][2] = '%s\n%s' % (configs[config_volume][2],
manifest)
if configs[config_volume][3] != config_image:
log.warn("Config containers do not match even though"
" shared volumes are the same!")
if volumes:
configs[config_volume][4].extend(volumes)
else:
if not config_volume_only or (config_volume_only == config_volume):
log.debug("Adding new service")
configs[config_volume] = service
else:
log.debug("Ignoring %s due to $CONFIG_VOLUME=%s" %
(config_volume, config_volume_only))
log.info('Service compilation completed.')
sh_script = '/var/lib/docker-puppet/docker-puppet.sh'
with open(sh_script, 'w') as script_file:
os.chmod(script_file.name, 0755)
script_file.write("""#!/bin/bash
set -ex
mkdir -p /etc/puppet
cp -a /tmp/puppet-etc/* /etc/puppet
rm -Rf /etc/puppet/ssl # not in use and causes permission errors
echo "{\\"step\\": $STEP}" > /etc/puppet/hieradata/docker_puppet.json
TAGS=""
if [ -n "$PUPPET_TAGS" ]; then
TAGS="--tags \"$PUPPET_TAGS\""
fi
# Create a reference timestamp to easily find all files touched by
# puppet. The sync ensures we get all the files we want due to
# different timestamp.
origin_of_time=/var/lib/config-data/${NAME}.origin_of_time
touch $origin_of_time
sync
set +e
# $::deployment_type in puppet-tripleo
export FACTER_deployment_type=containers
export FACTER_uuid=$(cat /sys/class/dmi/id/product_uuid | tr '[:upper:]' '[:lower:]')
FACTER_hostname=$HOSTNAME /usr/bin/puppet apply --summarize \
--detailed-exitcodes --color=false --logdest syslog --logdest console --modulepath=/etc/puppet/modules:/usr/share/openstack-puppet/modules $TAGS /etc/config.pp
rc=$?
set -e
if [ $rc -ne 2 -a $rc -ne 0 ]; then
exit $rc
fi
# Disables archiving
if [ -z "$NO_ARCHIVE" ]; then
archivedirs=("/etc" "/root" "/opt" "/var/lib/ironic/tftpboot" "/var/lib/ironic/httpboot" "/var/www" "/var/spool/cron" "/var/lib/nova/.ssh")
rsync_srcs=""
for d in "${archivedirs[@]}"; do
if [ -d "$d" ]; then
rsync_srcs+=" $d"
fi
done
# On stack update, if a password was changed in a config file,
# some services (e.g. mysql) must change their internal state
# (e.g. password in mysql DB) when paunch restarts them; and
# they need the old password to achieve that.
# For those services, we update the config hash to notify
# paunch that a restart is needed, but we do not update the
# password file in docker-puppet if the file already existed
# before and let the service regenerate it instead.
password_files="/root/.my.cnf"
exclude_files=""
for p in $password_files; do
if [ -f "$p" -a -f "/var/lib/config-data/${NAME}$p" ]; then
exclude_files+=" --exclude=$p"
fi
done
# Exclude read-only mounted directories/files which we do not want
# to copy or delete.
ro_files="/etc/puppetlabs/ /opt/puppetlabs/ /etc/pki/ca-trust/extracted "
ro_files+="/etc/pki/ca-trust/source/anchors /etc/pki/tls/certs/ca-bundle.crt "
ro_files+="/etc/pki/tls/certs/ca-bundle.trust.crt /etc/pki/tls/cert.pem "
ro_files+="/etc/hosts /etc/localtime /etc/hostname"
for ro in $ro_files; do
if [ -e "$ro" ]; then
exclude_files+=" --exclude=$ro"
fi
done
rsync -a -R --delay-updates --delete-after $exclude_files $rsync_srcs /var/lib/config-data/${NAME}
# Also make a copy of files modified during puppet run
# This is useful for debugging
echo "Gathering files modified after $(stat -c '%y' $origin_of_time)"
puppet_generated_path=/var/lib/config-data/puppet-generated/${NAME}
mkdir -p ${puppet_generated_path}
rsync -a -R -0 --delay-updates --delete-after $exclude_files \
--files-from=<(find $rsync_srcs -newer $origin_of_time -not -path '/etc/puppet*' -print0) \
/ ${puppet_generated_path}
# Cleanup any special files that might have been copied into place
# previously because fixes for LP#1860607 did not cleanup and required
# manual intervention if a container hit this. We can safely remove these
# files because they should be bind mounted into containers
for ro in $ro_files; do
if [ -e "${puppet_generated_path}/${ro}" ]; then
rm -rf "${puppet_generated_path}/${ro}"
fi
done
# Write a checksum of the config-data dir, this is used as a
# salt to trigger container restart when the config changes
# note: while being excluded from the output, password files
# are still included in checksum computation
additional_checksum_files=""
excluded_original_passwords=""
for p in $password_files; do
if [ -f "$p" ]; then
additional_checksum_files+=" $p"
excluded_original_passwords+=" --exclude=/var/lib/config-data/*${p}"
fi
done
# We need to exclude the swift rings and their backup as those change over time and
# containers do not need to restart if they change
EXCLUDE=--exclude='*/etc/swift/backups/*'\ --exclude='*/etc/swift/*.ring.gz'\ --exclude='*/etc/swift/*.builder'\ --exclude='*/etc/libvirt/passwd.db'\ ${excluded_original_passwords}
# We need to repipe the tar command through 'tar xO' to force text
# output because otherwise the sed command cannot work. The sed is
# needed because puppet puts timestamps as comments in cron and
# parsedfile resources, hence triggering a change at every redeploy
tar -c --mtime='1970-01-01' $EXCLUDE -f - /var/lib/config-data/${NAME} $additional_checksum_files | tar xO | \
sed '/^#.*HEADER.*/d' | md5sum | awk '{print $1}' > /var/lib/config-data/${NAME}.md5sum
tar -c --mtime='1970-01-01' $EXCLUDE -f - ${puppet_generated_path} $additional_checksum_files --mtime='1970-01-01' | tar xO \
| sed '/^#.*HEADER.*/d' | md5sum | awk '{print $1}' > ${puppet_generated_path}.md5sum
fi
""")
def mp_puppet_config((config_volume, puppet_tags, manifest, config_image, volumes)):
log = get_logger()
log.info('Starting configuration of %s using image %s' % (config_volume,
config_image))
log.debug('config_volume %s' % config_volume)
log.debug('puppet_tags %s' % puppet_tags)
log.debug('manifest %s' % manifest)
log.debug('config_image %s' % config_image)
log.debug('volumes %s' % volumes)
with tempfile.NamedTemporaryFile() as tmp_man:
with open(tmp_man.name, 'w') as man_file:
man_file.write('include ::tripleo::packages\n')
man_file.write(manifest)
uname = RUNNER.unique_container_name('docker-puppet-%s' %
config_volume)
rm_container(uname)
pull_image(config_image)
dcmd = ['/usr/bin/docker', 'run',
'--user', 'root',
'--name', uname,
'--env', 'PUPPET_TAGS=%s' % puppet_tags,
'--env', 'NAME=%s' % config_volume,
'--env', 'HOSTNAME=%s' % short_hostname(),
'--env', 'NO_ARCHIVE=%s' % os.environ.get('NO_ARCHIVE', ''),
'--env', 'STEP=%s' % os.environ.get('STEP', '6'),
'--volume', '/etc/localtime:/etc/localtime:ro',
'--volume', '%s:/etc/config.pp:ro,z' % tmp_man.name,
'--volume', '/etc/puppet/:/tmp/puppet-etc/:ro,z',
'--volume', '/usr/share/openstack-puppet/modules/:/usr/share/openstack-puppet/modules/:ro',
'--volume', '%s:/var/lib/config-data/:z' % os.environ.get('CONFIG_VOLUME_PREFIX', '/var/lib/config-data'),
'--volume', 'tripleo_logs:/var/log/tripleo/',
# Syslog socket for puppet logs
'--volume', '/dev/log:/dev/log',
# OpenSSL trusted CA injection
'--volume', '/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro',
'--volume', '/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro',
'--volume', '/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro',
'--volume', '/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro',
# facter caching
'--volume', '/var/lib/container-puppet/puppetlabs/facter.conf:/etc/puppetlabs/facter/facter.conf:ro',
'--volume', '/var/lib/container-puppet/puppetlabs/:/opt/puppetlabs/:ro',
# script injection
'--volume', '%s:%s:z' % (sh_script, sh_script) ]
for volume in volumes:
if volume:
dcmd.extend(['--volume', volume])
dcmd.extend(['--entrypoint', sh_script])
env = {}
# NOTE(flaper87): Always copy the DOCKER_* environment variables as
# they contain the access data for the docker daemon.
for k in filter(lambda k: k.startswith('DOCKER'), os.environ.keys()):
env[k] = os.environ.get(k)
if os.environ.get('NET_HOST', 'false') == 'true':
log.debug('NET_HOST enabled')
dcmd.extend(['--net', 'host', '--volume',
'/etc/hosts:/etc/hosts:ro'])
dcmd.append(config_image)
log.debug('Running docker command: %s' % ' '.join(dcmd))
subproc = subprocess.Popen(dcmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, env=env)
cmd_stdout, cmd_stderr = subproc.communicate()
# puppet with --detailed-exitcodes will return 0 for success and no changes
# and 2 for success and resource changes. Other numbers are failures
if subproc.returncode not in [0, 2]:
log.error('Failed running docker-puppet.py for %s' % config_volume)
if cmd_stdout:
log.error(cmd_stdout)
if cmd_stderr:
log.error(cmd_stderr)
else:
if cmd_stdout:
log.debug(cmd_stdout)
if cmd_stderr:
log.debug(cmd_stderr)
# only delete successful runs, for debugging
rm_container(uname)
log.info('Finished processing puppet configs for %s' % (config_volume))
return subproc.returncode
# Holds all the information for each process to consume.
# Instead of starting them all linearly we run them using a process
# pool. This creates a list of arguments for the above function
# to consume.
process_map = []
for config_volume in configs:
service = configs[config_volume]
puppet_tags = service[1] or ''
manifest = service[2] or ''
config_image = service[3] or ''
volumes = service[4] if len(service) > 4 else []
if puppet_tags:
puppet_tags = "file,file_line,concat,augeas,cron,%s" % puppet_tags
else:
puppet_tags = "file,file_line,concat,augeas,cron"
process_map.append([config_volume, puppet_tags, manifest, config_image, volumes])
for p in process_map:
log.debug('- %s' % p)
# Fire off processes to perform each configuration. Defaults
# to the number of CPUs on the system.
log.info('Starting multiprocess configuration steps. Using %d processes.' %
process_count)
p = multiprocessing.Pool(process_count)
returncodes = list(p.map(mp_puppet_config, process_map))
config_volumes = [pm[0] for pm in process_map]
success = True
for returncode, config_volume in zip(returncodes, config_volumes):
if returncode not in [0, 2]:
log.error('ERROR configuring %s' % config_volume)
success = False
# Update the startup configs with the config hash we generated above
config_volume_prefix = os.environ.get('CONFIG_VOLUME_PREFIX', '/var/lib/config-data')
log.debug('CONFIG_VOLUME_PREFIX: %s' % config_volume_prefix)
startup_configs = os.environ.get('STARTUP_CONFIG_PATTERN', '/var/lib/tripleo-config/docker-container-startup-config-step_*.json')
log.debug('STARTUP_CONFIG_PATTERN: %s' % startup_configs)
infiles = glob.glob('/var/lib/tripleo-config/docker-container-startup-config-step_*.json')
for infile in infiles:
with open(infile) as f:
infile_data = json.load(f)
for k, v in infile_data.iteritems():
config_volumes = match_config_volumes(config_volume_prefix, v)
config_hashes = [get_config_hash(volume_path) for volume_path in config_volumes]
config_hashes = filter(None, config_hashes)
config_hash = '-'.join(config_hashes)
if config_hash:
env = v.get('environment', [])
env.append("TRIPLEO_CONFIG_HASH=%s" % config_hash)
log.debug("Updating config hash for %s, config_volume=%s hash=%s" % (k, config_volume, config_hash))
infile_data[k]['environment'] = env
outfile = os.path.join(os.path.dirname(infile), "hashed-" + os.path.basename(infile))
with open(outfile, 'w') as out_f:
os.chmod(out_f.name, 0600)
json.dump(infile_data, out_f, indent=2)
if not success:
sys.exit(1)