382 lines
14 KiB
Python
Executable File
382 lines
14 KiB
Python
Executable File
#!/usr/bin/env python
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# Launch a new OpenStack project infrastructure node.
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# Copyright (C) 2011-2012 OpenStack LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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#
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import argparse
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import os
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import shutil
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import subprocess
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import sys
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import threading
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import tempfile
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import time
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import traceback
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import dns
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import utils
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import openstack
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import os_client_config
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import paramiko
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SCRIPT_DIR = os.path.dirname(sys.argv[0])
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try:
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# This unactionable warning does not need to be printed over and over.
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import requests.packages.urllib3
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requests.packages.urllib3.disable_warnings()
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except:
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pass
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class JobDir(object):
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def __init__(self, keep=False):
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self.keep = keep
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self.root = tempfile.mkdtemp()
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self.inventory_root = os.path.join(self.root, 'inventory')
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os.makedirs(self.inventory_root)
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self.hosts = os.path.join(self.inventory_root, 'hosts')
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self.groups = os.path.join(self.inventory_root, 'groups')
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self.key = os.path.join(self.root, 'id_rsa')
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self.ansible_log = os.path.join(self.root, 'ansible_log.txt')
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# XXX if we need more, we might like to setup an ansible.cfg
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# file and use that rather than env vars. See
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# zuul/launcher/ansiblelaunchserver.py as an example
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self.env = os.environ.copy()
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self.env['ANSIBLE_LOG_PATH'] = self.ansible_log
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def __enter__(self):
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return self
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def __exit__(self, etype, value, tb):
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if not self.keep:
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shutil.rmtree(self.root)
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def run(cmd, **args):
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args['stdout'] = subprocess.PIPE
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args['stderr'] = subprocess.STDOUT
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print "Running: %s" % (cmd,)
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proc = subprocess.Popen(cmd, **args)
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out = ''
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for line in iter(proc.stdout.readline, ''):
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sys.stdout.write(line)
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sys.stdout.flush()
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out += line
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ret = proc.wait()
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print "Return code: %s" % (ret,)
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if ret != 0:
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raise subprocess.CalledProcessError(ret, cmd, out)
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return ret
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def stream_syslog(ssh_client):
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try:
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ssh_client.ssh('tail -f /var/log/syslog')
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except Exception:
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print "Syslog stream terminated"
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def bootstrap_server(server, key, name, volume_device, keep,
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mount_path, fs_label, environment):
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ip = server.public_v4
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ssh_kwargs = dict(pkey=key)
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print("--- Running initial configuration on host %s ---" % ip)
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for username in ['root', 'ubuntu', 'centos', 'admin']:
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ssh_client = utils.ssh_connect(ip, username, ssh_kwargs, timeout=600)
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if ssh_client:
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break
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if not ssh_client:
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raise Exception("Unable to log in via SSH")
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# cloud-init puts the "please log in as user foo" message and
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# subsequent exit() in root's authorized_keys -- overwrite it with
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# a normal version to get root login working again.
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if username != 'root':
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ssh_client.ssh("sudo cp ~/.ssh/authorized_keys"
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" ~root/.ssh/authorized_keys")
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ssh_client.ssh("sudo chmod 644 ~root/.ssh/authorized_keys")
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ssh_client.ssh("sudo chown root.root ~root/.ssh/authorized_keys")
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ssh_client = utils.ssh_connect(ip, 'root', ssh_kwargs, timeout=600)
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# Something up with RAX images that they have the ipv6 interface in
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# /etc/network/interfaces but eth0 hasn't noticed yet; reload it
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ssh_client.ssh('(ifdown eth0 && ifup eth0) || true')
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if server.public_v6:
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ssh_client.ssh('ping6 -c5 -Q 0x10 review.openstack.org '
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'|| ping6 -c5 -Q 0x10 wiki.openstack.org')
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ssh_client.scp(os.path.join(SCRIPT_DIR, '..', 'make_swap.sh'),
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'make_swap.sh')
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ssh_client.ssh('bash -x make_swap.sh')
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if volume_device:
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ssh_client.scp(os.path.join(SCRIPT_DIR, '..', 'mount_volume.sh'),
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'mount_volume.sh')
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ssh_client.ssh('bash -x mount_volume.sh %s %s %s' %
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(volume_device, mount_path, fs_label))
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# This next chunk should really exist as a playbook, but whatev
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ssh_client.scp(os.path.join(SCRIPT_DIR, '..', 'install_puppet.sh'),
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'install_puppet.sh')
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ssh_client.ssh('bash -x install_puppet.sh')
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# Zero the ansible inventory cache so that next run finds the new server
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inventory_cache = '/var/cache/ansible-inventory/ansible-inventory.cache'
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if os.path.exists(inventory_cache):
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with open(inventory_cache, 'w'):
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pass
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with JobDir(keep) as jobdir:
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# Update the generated-groups file globally and incorporate it
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# into our inventory
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# Remove cloud and region from the environment to work
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# around a bug in occ
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expand_env = os.environ.copy()
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for env_key in expand_env.keys():
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if env_key.startswith('OS_'):
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expand_env.pop(env_key, None)
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expand_env['ANSIBLE_LOG_PATH'] = jobdir.ansible_log
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# Regenerate inventory cache, throwing an error if there is an issue
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# so that we don't generate a bogus groups file
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try:
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run(['/etc/ansible/hosts/openstack_inventory', '--list'],
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env=expand_env)
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except subprocess.CalledProcessError as e:
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print "Inventory regeneration failed"
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print e.output
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raise
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run('/usr/local/bin/expand-groups.sh',
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env=expand_env,
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stderr=subprocess.STDOUT)
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# Write out the private SSH key we generated
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with open(jobdir.key, 'w') as key_file:
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key.write_private_key(key_file)
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os.chmod(jobdir.key, 0o600)
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# Write out inventory
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with open(jobdir.hosts, 'w') as inventory_file:
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inventory_file.write(
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"{host} ansible_host={ip} ansible_user=root".format(
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host=name, ip=server.interface_ip))
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os.symlink('/etc/ansible/hosts/generated-groups',
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jobdir.groups)
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t = threading.Thread(target=stream_syslog, args=(ssh_client,))
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t.daemon = True
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t.start()
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ansible_cmd = [
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'ansible-playbook',
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'-i', jobdir.inventory_root, '-l', name,
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'--private-key={key}'.format(key=jobdir.key),
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"--ssh-common-args='-o StrictHostKeyChecking=no'",
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'-e', 'target={name}'.format(name=name),
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]
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if environment is not None:
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ansible_cmd += [
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'-e',
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'puppet_environment={env}'.format(env=environment)]
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# Run the remote puppet apply playbook limited to just this server
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# we just created
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for playbook in [
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'set-hostnames.yaml',
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'remote_puppet_adhoc.yaml']:
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run(ansible_cmd + [
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os.path.join(SCRIPT_DIR, '..', 'playbooks', playbook)],
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env=jobdir.env)
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try:
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ssh_client.ssh("reboot")
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except Exception as e:
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# Some init system kill the connection too fast after reboot.
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# Deal with it by ignoring ssh errors when rebooting.
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if e.rc == -1:
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pass
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else:
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raise
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def build_server(cloud, name, image, flavor,
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volume, keep, network, boot_from_volume, config_drive,
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mount_path, fs_label, availability_zone, environment):
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key = None
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server = None
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create_kwargs = dict(image=image, flavor=flavor, name=name,
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reuse_ips=False, wait=True,
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boot_from_volume=boot_from_volume,
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network=network,
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config_drive=config_drive)
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if availability_zone:
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create_kwargs['availability_zone'] = availability_zone
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if volume:
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create_kwargs['volumes'] = [volume]
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key_name = 'launch-%i' % (time.time())
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key = paramiko.RSAKey.generate(2048)
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public_key = key.get_name() + ' ' + key.get_base64()
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cloud.create_keypair(key_name, public_key)
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create_kwargs['key_name'] = key_name
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try:
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server = cloud.create_server(**create_kwargs)
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except Exception:
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try:
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cloud.delete_keypair(key_name)
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except Exception:
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print "Exception encountered deleting keypair:"
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traceback.print_exc()
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raise
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try:
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cloud.delete_keypair(key_name)
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server = cloud.get_openstack_vars(server)
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if volume:
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volume = cloud.get_volume(volume)
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volume_device = cloud.get_volume_attach_device(volume,
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server['id'])
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else:
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volume_device = None
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bootstrap_server(server, key, name, volume_device, keep,
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mount_path, fs_label, environment)
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print('UUID=%s\nIPV4=%s\nIPV6=%s\n' % (
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server.id, server.public_v4, server.public_v6))
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except Exception:
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print "****"
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print "Server %s failed to build!" % (server.id)
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try:
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if keep:
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print "Keeping as requested"
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# Write out the private SSH key we generated, as we
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# may not have got far enough for ansible to run
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with open('/tmp/%s.id_rsa' % server.id, 'w') as key_file:
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key.write_private_key(key_file)
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os.chmod(key_file.name, 0o600)
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print "Private key saved in %s" % key_file.name
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print "Run to delete -> openstack server delete %s" % \
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(server.id)
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else:
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cloud.delete_server(server.id, delete_ips=True)
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except Exception:
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print "Exception encountered deleting server:"
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traceback.print_exc()
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print "The original exception follows:"
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print "****"
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# Raise the important exception that started this
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raise
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return server
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument("name", help="server name")
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parser.add_argument("--cloud", dest="cloud", required=True,
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help="cloud name")
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parser.add_argument("--region", dest="region",
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help="cloud region")
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parser.add_argument("--flavor", dest="flavor", default='1GB',
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help="name (or substring) of flavor")
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parser.add_argument("--image", dest="image",
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default="Ubuntu 16.04 LTS (Xenial Xerus) (PVHVM)",
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help="image name")
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parser.add_argument("--environment", dest="environment",
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help="Puppet environment to use",
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default=None)
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parser.add_argument("--volume", dest="volume",
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help="UUID of volume to attach to the new server.",
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default=None)
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parser.add_argument("--mount-path", dest="mount_path",
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help="Path to mount cinder volume at.",
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default=None)
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parser.add_argument("--fs-label", dest="fs_label",
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help="FS label to use when mounting cinder volume.",
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default=None)
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parser.add_argument("--boot-from-volume", dest="boot_from_volume",
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help="Create a boot volume for the server and use it.",
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action='store_true',
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default=False)
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parser.add_argument("--keep", dest="keep",
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help="Don't clean up or delete the server on error.",
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action='store_true',
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default=False)
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parser.add_argument("--verbose", dest="verbose", default=False,
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action='store_true',
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help="Be verbose about logging cloud actions")
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parser.add_argument("--network", dest="network", default=None,
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help="network label to attach instance to")
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parser.add_argument("--config-drive", dest="config_drive",
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help="Boot with config_drive attached.",
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action='store_true',
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default=False)
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parser.add_argument("--az", dest="availability_zone", default=None,
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help="AZ to boot in.")
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options = parser.parse_args()
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openstack.enable_logging(debug=options.verbose)
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cloud_kwargs = {}
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if options.region:
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cloud_kwargs['region_name'] = options.region
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cloud = openstack.connect(cloud=options.cloud, **cloud_kwargs)
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flavor = cloud.get_flavor(options.flavor)
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if flavor:
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print "Found flavor", flavor.name
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else:
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print "Unable to find matching flavor; flavor list:"
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for i in cloud.list_flavors():
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print i.name
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sys.exit(1)
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image = cloud.get_image_exclude(options.image, 'deprecated')
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if image:
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print "Found image", image.name
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else:
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print "Unable to find matching image; image list:"
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for i in cloud.list_images():
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print i.name
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sys.exit(1)
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server = build_server(cloud, options.name, image, flavor,
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options.volume, options.keep,
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options.network, options.boot_from_volume,
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options.config_drive,
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options.mount_path, options.fs_label,
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options.availability_zone,
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options.environment)
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dns.print_dns(cloud, server)
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if __name__ == '__main__':
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main()
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