e42198368f
When making a mistake in the volumes configuration the error message
thrown to the operator is something like the following:
Traceback (most recent call last):
File \"/var/lib/docker-puppet/docker-puppet.py\", line 394, in <module>
config_volumes = match_config_volumes(config_volume_prefix, v)
File \"/var/lib/docker-puppet/docker-puppet.py\", line 89, in match_config_volumes
volumes = config.get('volumes', [])
AttributeError: 'list' object has no attribute 'get'
Let's at least log *which* container had the failure.
Change-Id: I37af67a52f12d8a5d643b03c6796a07b23d47ab5
425 lines
17 KiB
Python
Executable File
425 lines
17 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Shell script tool to run puppet inside of the given docker container image.
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# Uses the config file at /var/lib/docker-puppet/docker-puppet.json as a source for a JSON
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# array of [config_volume, puppet_tags, manifest, config_image, [volumes]] settings
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# that can be used to generate config files or run ad-hoc puppet modules
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# inside of a container.
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import glob
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import json
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import logging
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import os
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import subprocess
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import sys
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import tempfile
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import time
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import multiprocessing
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logger = None
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def get_logger():
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global logger
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if logger is None:
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logger = logging.getLogger()
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ch = logging.StreamHandler(sys.stdout)
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if os.environ.get('DEBUG', False):
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logger.setLevel(logging.DEBUG)
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ch.setLevel(logging.DEBUG)
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else:
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logger.setLevel(logging.INFO)
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ch.setLevel(logging.INFO)
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formatter = logging.Formatter('%(asctime)s %(levelname)s: '
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'%(process)s -- %(message)s')
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ch.setFormatter(formatter)
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logger.addHandler(ch)
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return logger
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# this is to match what we do in deployed-server
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def short_hostname():
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subproc = subprocess.Popen(['hostname', '-s'],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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cmd_stdout, cmd_stderr = subproc.communicate()
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return cmd_stdout.rstrip()
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def pull_image(name):
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subproc = subprocess.Popen(['/usr/bin/docker', 'inspect', name],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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cmd_stdout, cmd_stderr = subproc.communicate()
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retval = subproc.returncode
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if retval == 0:
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log.info('Image already exists: %s' % name)
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return
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retval = -1
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count = 0
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log.info('Pulling image: %s' % name)
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while retval != 0:
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count += 1
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subproc = subprocess.Popen(['/usr/bin/docker', 'pull', name],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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cmd_stdout, cmd_stderr = subproc.communicate()
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retval = subproc.returncode
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if retval != 0:
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time.sleep(3)
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log.warning('docker pull failed: %s' % cmd_stderr)
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log.warning('retrying pulling image: %s' % name)
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if count >= 5:
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log.error('Failed to pull image: %s' % name)
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break
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if cmd_stdout:
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log.debug(cmd_stdout)
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if cmd_stderr:
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log.debug(cmd_stderr)
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def match_config_volumes(prefix, config):
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# Match the mounted config volumes - we can't just use the
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# key as e.g "novacomute" consumes config-data/nova
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try:
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volumes = config.get('volumes', [])
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except AttributeError:
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log.error('Error fetching volumes. Prefix: %s - Config: %s' % (prefix, config))
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raise
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return sorted([os.path.dirname(v.split(":")[0]) for v in volumes if
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v.startswith(prefix)])
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def get_config_hash(config_volume):
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hashfile = "%s.md5sum" % config_volume
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log.debug("Looking for hashfile %s for config_volume %s" % (hashfile, config_volume))
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hash_data = None
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if os.path.isfile(hashfile):
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log.debug("Got hashfile %s for config_volume %s" % (hashfile, config_volume))
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with open(hashfile) as f:
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hash_data = f.read().rstrip()
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return hash_data
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def rm_container(name):
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if os.environ.get('SHOW_DIFF', None):
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log.info('Diffing container: %s' % name)
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subproc = subprocess.Popen(['/usr/bin/docker', 'diff', name],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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cmd_stdout, cmd_stderr = subproc.communicate()
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if cmd_stdout:
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log.debug(cmd_stdout)
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if cmd_stderr:
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log.debug(cmd_stderr)
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log.info('Removing container: %s' % name)
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subproc = subprocess.Popen(['/usr/bin/docker', 'rm', name],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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cmd_stdout, cmd_stderr = subproc.communicate()
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if cmd_stdout:
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log.debug(cmd_stdout)
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if cmd_stderr and \
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cmd_stderr != 'Error response from daemon: ' \
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'No such container: {}\n'.format(name):
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log.debug(cmd_stderr)
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process_count = int(os.environ.get('PROCESS_COUNT',
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multiprocessing.cpu_count()))
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log = get_logger()
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log.info('Running docker-puppet')
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config_file = os.environ.get('CONFIG', '/var/lib/docker-puppet/docker-puppet.json')
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# If specified, only this config_volume will be used
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config_volume_only = os.environ.get('CONFIG_VOLUME', None)
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log.debug('CONFIG: %s' % config_file)
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with open(config_file) as f:
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json_data = json.load(f)
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# To save time we support configuring 'shared' services at the same
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# time. For example configuring all of the heat services
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# in a single container pass makes sense and will save some time.
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# To support this we merge shared settings together here.
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#
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# We key off of config_volume as this should be the same for a
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# given group of services. We are also now specifying the container
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# in which the services should be configured. This should match
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# in all instances where the volume name is also the same.
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configs = {}
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for service in (json_data or []):
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if service is None:
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continue
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if isinstance(service, dict):
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service = [
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service.get('config_volume'),
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service.get('puppet_tags'),
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service.get('step_config'),
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service.get('config_image'),
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service.get('volumes', []),
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]
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config_volume = service[0] or ''
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puppet_tags = service[1] or ''
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manifest = service[2] or ''
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config_image = service[3] or ''
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volumes = service[4] if len(service) > 4 else []
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if not manifest or not config_image:
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continue
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log.debug('config_volume %s' % config_volume)
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log.debug('puppet_tags %s' % puppet_tags)
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log.debug('manifest %s' % manifest)
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log.debug('config_image %s' % config_image)
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log.debug('volumes %s' % volumes)
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# We key off of config volume for all configs.
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if config_volume in configs:
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# Append puppet tags and manifest.
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log.debug("Existing service, appending puppet tags and manifest")
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if puppet_tags:
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configs[config_volume][1] = '%s,%s' % (configs[config_volume][1],
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puppet_tags)
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if manifest:
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configs[config_volume][2] = '%s\n%s' % (configs[config_volume][2],
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manifest)
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if configs[config_volume][3] != config_image:
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log.warning("Config containers do not match even though"
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" shared volumes are the same!")
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if volumes:
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configs[config_volume][4].extend(volumes)
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else:
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if not config_volume_only or (config_volume_only == config_volume):
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log.debug("Adding new service")
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configs[config_volume] = service
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else:
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log.debug("Ignoring %s due to $CONFIG_VOLUME=%s" %
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(config_volume, config_volume_only))
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log.info('Service compilation completed.')
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sh_script = '/var/lib/docker-puppet/docker-puppet.sh'
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with open(sh_script, 'w') as script_file:
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os.chmod(script_file.name, 0755)
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script_file.write("""#!/bin/bash
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set -ex
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mkdir -p /etc/puppet
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cp -a /tmp/puppet-etc/* /etc/puppet
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rm -Rf /etc/puppet/ssl # not in use and causes permission errors
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echo "{\\"step\\": $STEP}" > /etc/puppet/hieradata/docker.json
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TAGS=""
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if [ -n "$PUPPET_TAGS" ]; then
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TAGS="--tags \"$PUPPET_TAGS\""
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fi
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# Create a reference timestamp to easily find all files touched by
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# puppet. The sync ensures we get all the files we want due to
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# different timestamp.
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origin_of_time=/var/lib/config-data/${NAME}.origin_of_time
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touch $origin_of_time
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sync
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set +e
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FACTER_hostname=$HOSTNAME FACTER_uuid=docker /usr/bin/puppet apply --summarize \
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--detailed-exitcodes --color=false --logdest syslog --logdest console --modulepath=/etc/puppet/modules:/usr/share/openstack-puppet/modules $TAGS /etc/config.pp
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rc=$?
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set -e
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if [ $rc -ne 2 -a $rc -ne 0 ]; then
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exit $rc
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fi
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# Disables archiving
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if [ -z "$NO_ARCHIVE" ]; then
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archivedirs=("/etc" "/root" "/opt" "/var/lib/ironic/tftpboot" "/var/lib/ironic/httpboot" "/var/www" "/var/spool/cron" "/var/lib/nova/.ssh")
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rsync_srcs=""
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for d in "${archivedirs[@]}"; do
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if [ -d "$d" ]; then
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rsync_srcs+=" $d"
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fi
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done
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rsync -a -R --delay-updates --delete-after $rsync_srcs /var/lib/config-data/${NAME}
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# Also make a copy of files modified during puppet run
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# This is useful for debugging
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echo "Gathering files modified after $(stat -c '%y' $origin_of_time)"
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mkdir -p /var/lib/config-data/puppet-generated/${NAME}
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rsync -a -R -0 --delay-updates --delete-after \
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--files-from=<(find $rsync_srcs -newer $origin_of_time -not -path '/etc/puppet*' -print0) \
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/ /var/lib/config-data/puppet-generated/${NAME}
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# Write a checksum of the config-data dir, this is used as a
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# salt to trigger container restart when the config changes
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tar -c -f - /var/lib/config-data/${NAME} --mtime='1970-01-01' | md5sum | awk '{print $1}' > /var/lib/config-data/${NAME}.md5sum
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tar -c -f - /var/lib/config-data/puppet-generated/${NAME} --mtime='1970-01-01' | md5sum | awk '{print $1}' > /var/lib/config-data/puppet-generated/${NAME}.md5sum
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fi
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""")
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def mp_puppet_config((config_volume, puppet_tags, manifest, config_image, volumes)):
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log = get_logger()
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log.info('Starting configuration of %s using image %s' % (config_volume,
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config_image))
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log.debug('config_volume %s' % config_volume)
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log.debug('puppet_tags %s' % puppet_tags)
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log.debug('manifest %s' % manifest)
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log.debug('config_image %s' % config_image)
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log.debug('volumes %s' % volumes)
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with tempfile.NamedTemporaryFile() as tmp_man:
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with open(tmp_man.name, 'w') as man_file:
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man_file.write('include ::tripleo::packages\n')
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man_file.write(manifest)
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rm_container('docker-puppet-%s' % config_volume)
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pull_image(config_image)
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dcmd = ['/usr/bin/docker', 'run',
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'--user', 'root',
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'--name', 'docker-puppet-%s' % config_volume,
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'--env', 'PUPPET_TAGS=%s' % puppet_tags,
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'--env', 'NAME=%s' % config_volume,
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'--env', 'HOSTNAME=%s' % short_hostname(),
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'--env', 'NO_ARCHIVE=%s' % os.environ.get('NO_ARCHIVE', ''),
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'--env', 'STEP=%s' % os.environ.get('STEP', '6'),
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'--volume', '/etc/localtime:/etc/localtime:ro',
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'--volume', '%s:/etc/config.pp:ro,z' % tmp_man.name,
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'--volume', '/etc/puppet/:/tmp/puppet-etc/:ro,z',
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'--volume', '/usr/share/openstack-puppet/modules/:/usr/share/openstack-puppet/modules/:ro,z',
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'--volume', '%s:/var/lib/config-data/:z' % os.environ.get('CONFIG_VOLUME_PREFIX', '/var/lib/config-data'),
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'--volume', 'tripleo_logs:/var/log/tripleo/',
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# Syslog socket for puppet logs
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'--volume', '/dev/log:/dev/log',
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# OpenSSL trusted CA injection
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'--volume', '/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro',
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'--volume', '/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro',
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'--volume', '/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro',
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'--volume', '/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro',
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# script injection
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'--volume', '%s:%s:z' % (sh_script, sh_script) ]
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for volume in volumes:
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if volume:
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dcmd.extend(['--volume', volume])
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dcmd.extend(['--entrypoint', sh_script])
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env = {}
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# NOTE(flaper87): Always copy the DOCKER_* environment variables as
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# they contain the access data for the docker daemon.
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for k in filter(lambda k: k.startswith('DOCKER'), os.environ.keys()):
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env[k] = os.environ.get(k)
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if os.environ.get('NET_HOST', 'false') == 'true':
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log.debug('NET_HOST enabled')
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dcmd.extend(['--net', 'host', '--volume',
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'/etc/hosts:/etc/hosts:ro'])
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dcmd.append(config_image)
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log.debug('Running docker command: %s' % ' '.join(dcmd))
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subproc = subprocess.Popen(dcmd, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, env=env)
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cmd_stdout, cmd_stderr = subproc.communicate()
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# puppet with --detailed-exitcodes will return 0 for success and no changes
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# and 2 for success and resource changes. Other numbers are failures
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if subproc.returncode not in [0, 2]:
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log.error('Failed running docker-puppet.py for %s' % config_volume)
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if cmd_stdout:
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log.error(cmd_stdout)
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if cmd_stderr:
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log.error(cmd_stderr)
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else:
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if cmd_stdout:
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log.debug(cmd_stdout)
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if cmd_stderr:
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log.debug(cmd_stderr)
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# only delete successful runs, for debugging
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rm_container('docker-puppet-%s' % config_volume)
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log.info('Finished processing puppet configs for %s' % (config_volume))
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return subproc.returncode
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# Holds all the information for each process to consume.
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# Instead of starting them all linearly we run them using a process
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# pool. This creates a list of arguments for the above function
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# to consume.
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process_map = []
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for config_volume in configs:
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service = configs[config_volume]
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puppet_tags = service[1] or ''
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manifest = service[2] or ''
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config_image = service[3] or ''
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volumes = service[4] if len(service) > 4 else []
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if puppet_tags:
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puppet_tags = "file,file_line,concat,augeas,cron,%s" % puppet_tags
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else:
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puppet_tags = "file,file_line,concat,augeas,cron"
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process_map.append([config_volume, puppet_tags, manifest, config_image, volumes])
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for p in process_map:
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log.debug('- %s' % p)
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# Fire off processes to perform each configuration. Defaults
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# to the number of CPUs on the system.
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log.info('Starting multiprocess configuration steps. Using %d processes.' %
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process_count)
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p = multiprocessing.Pool(process_count)
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returncodes = list(p.map(mp_puppet_config, process_map))
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config_volumes = [pm[0] for pm in process_map]
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success = True
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for returncode, config_volume in zip(returncodes, config_volumes):
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if returncode not in [0, 2]:
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log.error('ERROR configuring %s' % config_volume)
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success = False
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# Update the startup configs with the config hash we generated above
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config_volume_prefix = os.environ.get('CONFIG_VOLUME_PREFIX', '/var/lib/config-data')
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log.debug('CONFIG_VOLUME_PREFIX: %s' % config_volume_prefix)
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startup_configs = os.environ.get('STARTUP_CONFIG_PATTERN', '/var/lib/tripleo-config/docker-container-startup-config-step_*.json')
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log.debug('STARTUP_CONFIG_PATTERN: %s' % startup_configs)
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infiles = glob.glob('/var/lib/tripleo-config/docker-container-startup-config-step_*.json')
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for infile in infiles:
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with open(infile) as f:
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infile_data = json.load(f)
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for k, v in infile_data.iteritems():
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config_volumes = match_config_volumes(config_volume_prefix, v)
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config_hashes = [get_config_hash(volume_path) for volume_path in config_volumes]
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config_hashes = filter(None, config_hashes)
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config_hash = '-'.join(config_hashes)
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if config_hash:
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env = v.get('environment', [])
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env.append("TRIPLEO_CONFIG_HASH=%s" % config_hash)
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log.debug("Updating config hash for %s, config_volume=%s hash=%s" % (k, config_volume, config_hash))
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infile_data[k]['environment'] = env
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outfile = os.path.join(os.path.dirname(infile), "hashed-" + os.path.basename(infile))
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with open(outfile, 'w') as out_f:
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os.chmod(out_f.name, 0600)
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json.dump(infile_data, out_f, indent=2)
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if not success:
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sys.exit(1)
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