557 lines
21 KiB
Python
557 lines
21 KiB
Python
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# Copyright (c) 2006-2009 Mitch Garnaat http://garnaat.org/
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# Copyright (c) 2010 Chris Moyer http://coredumped.org/
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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"""
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High-level abstraction of an EC2 server
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"""
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import boto.ec2
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from boto.mashups.iobject import IObject
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from boto.pyami.config import BotoConfigPath, Config
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from boto.sdb.db.model import Model
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from boto.sdb.db.property import StringProperty, IntegerProperty, BooleanProperty, CalculatedProperty
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from boto.manage import propget
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from boto.ec2.zone import Zone
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from boto.ec2.keypair import KeyPair
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import os, time
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from contextlib import closing
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from boto.exception import EC2ResponseError
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from boto.compat import six, StringIO
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InstanceTypes = ['m1.small', 'm1.large', 'm1.xlarge',
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'c1.medium', 'c1.xlarge',
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'm2.2xlarge', 'm2.4xlarge']
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class Bundler(object):
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def __init__(self, server, uname='root'):
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from boto.manage.cmdshell import SSHClient
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self.server = server
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self.uname = uname
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self.ssh_client = SSHClient(server, uname=uname)
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def copy_x509(self, key_file, cert_file):
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print('\tcopying cert and pk over to /mnt directory on server')
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self.ssh_client.open_sftp()
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path, name = os.path.split(key_file)
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self.remote_key_file = '/mnt/%s' % name
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self.ssh_client.put_file(key_file, self.remote_key_file)
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path, name = os.path.split(cert_file)
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self.remote_cert_file = '/mnt/%s' % name
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self.ssh_client.put_file(cert_file, self.remote_cert_file)
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print('...complete!')
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def bundle_image(self, prefix, size, ssh_key):
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command = ""
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if self.uname != 'root':
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command = "sudo "
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command += 'ec2-bundle-vol '
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command += '-c %s -k %s ' % (self.remote_cert_file, self.remote_key_file)
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command += '-u %s ' % self.server._reservation.owner_id
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command += '-p %s ' % prefix
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command += '-s %d ' % size
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command += '-d /mnt '
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if self.server.instance_type == 'm1.small' or self.server.instance_type == 'c1.medium':
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command += '-r i386'
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else:
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command += '-r x86_64'
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return command
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def upload_bundle(self, bucket, prefix, ssh_key):
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command = ""
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if self.uname != 'root':
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command = "sudo "
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command += 'ec2-upload-bundle '
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command += '-m /mnt/%s.manifest.xml ' % prefix
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command += '-b %s ' % bucket
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command += '-a %s ' % self.server.ec2.aws_access_key_id
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command += '-s %s ' % self.server.ec2.aws_secret_access_key
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return command
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def bundle(self, bucket=None, prefix=None, key_file=None, cert_file=None,
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size=None, ssh_key=None, fp=None, clear_history=True):
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iobject = IObject()
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if not bucket:
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bucket = iobject.get_string('Name of S3 bucket')
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if not prefix:
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prefix = iobject.get_string('Prefix for AMI file')
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if not key_file:
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key_file = iobject.get_filename('Path to RSA private key file')
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if not cert_file:
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cert_file = iobject.get_filename('Path to RSA public cert file')
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if not size:
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size = iobject.get_int('Size (in MB) of bundled image')
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if not ssh_key:
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ssh_key = self.server.get_ssh_key_file()
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self.copy_x509(key_file, cert_file)
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if not fp:
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fp = StringIO()
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fp.write('sudo mv %s /mnt/boto.cfg; ' % BotoConfigPath)
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fp.write('mv ~/.ssh/authorized_keys /mnt/authorized_keys; ')
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if clear_history:
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fp.write('history -c; ')
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fp.write(self.bundle_image(prefix, size, ssh_key))
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fp.write('; ')
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fp.write(self.upload_bundle(bucket, prefix, ssh_key))
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fp.write('; ')
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fp.write('sudo mv /mnt/boto.cfg %s; ' % BotoConfigPath)
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fp.write('mv /mnt/authorized_keys ~/.ssh/authorized_keys')
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command = fp.getvalue()
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print('running the following command on the remote server:')
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print(command)
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t = self.ssh_client.run(command)
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print('\t%s' % t[0])
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print('\t%s' % t[1])
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print('...complete!')
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print('registering image...')
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self.image_id = self.server.ec2.register_image(name=prefix, image_location='%s/%s.manifest.xml' % (bucket, prefix))
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return self.image_id
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class CommandLineGetter(object):
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def get_ami_list(self):
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my_amis = []
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for ami in self.ec2.get_all_images():
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# hack alert, need a better way to do this!
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if ami.location.find('pyami') >= 0:
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my_amis.append((ami.location, ami))
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return my_amis
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def get_region(self, params):
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region = params.get('region', None)
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if isinstance(region, basestring):
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region = boto.ec2.get_region(region)
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params['region'] = region
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if not region:
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prop = self.cls.find_property('region_name')
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params['region'] = propget.get(prop, choices=boto.ec2.regions)
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self.ec2 = params['region'].connect()
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def get_name(self, params):
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if not params.get('name', None):
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prop = self.cls.find_property('name')
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params['name'] = propget.get(prop)
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def get_description(self, params):
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if not params.get('description', None):
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prop = self.cls.find_property('description')
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params['description'] = propget.get(prop)
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def get_instance_type(self, params):
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if not params.get('instance_type', None):
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prop = StringProperty(name='instance_type', verbose_name='Instance Type',
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choices=InstanceTypes)
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params['instance_type'] = propget.get(prop)
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def get_quantity(self, params):
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if not params.get('quantity', None):
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prop = IntegerProperty(name='quantity', verbose_name='Number of Instances')
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params['quantity'] = propget.get(prop)
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def get_zone(self, params):
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if not params.get('zone', None):
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prop = StringProperty(name='zone', verbose_name='EC2 Availability Zone',
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choices=self.ec2.get_all_zones)
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params['zone'] = propget.get(prop)
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def get_ami_id(self, params):
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valid = False
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while not valid:
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ami = params.get('ami', None)
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if not ami:
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prop = StringProperty(name='ami', verbose_name='AMI')
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ami = propget.get(prop)
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try:
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rs = self.ec2.get_all_images([ami])
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if len(rs) == 1:
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valid = True
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params['ami'] = rs[0]
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except EC2ResponseError:
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pass
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def get_group(self, params):
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group = params.get('group', None)
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if isinstance(group, basestring):
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group_list = self.ec2.get_all_security_groups()
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for g in group_list:
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if g.name == group:
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group = g
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params['group'] = g
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if not group:
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prop = StringProperty(name='group', verbose_name='EC2 Security Group',
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choices=self.ec2.get_all_security_groups)
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params['group'] = propget.get(prop)
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def get_key(self, params):
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keypair = params.get('keypair', None)
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if isinstance(keypair, basestring):
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key_list = self.ec2.get_all_key_pairs()
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for k in key_list:
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if k.name == keypair:
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keypair = k.name
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params['keypair'] = k.name
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if not keypair:
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prop = StringProperty(name='keypair', verbose_name='EC2 KeyPair',
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choices=self.ec2.get_all_key_pairs)
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params['keypair'] = propget.get(prop).name
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def get(self, cls, params):
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self.cls = cls
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self.get_region(params)
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self.ec2 = params['region'].connect()
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self.get_name(params)
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self.get_description(params)
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self.get_instance_type(params)
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self.get_zone(params)
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self.get_quantity(params)
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self.get_ami_id(params)
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self.get_group(params)
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self.get_key(params)
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class Server(Model):
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#
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# The properties of this object consists of real properties for data that
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# is not already stored in EC2 somewhere (e.g. name, description) plus
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# calculated properties for all of the properties that are already in
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# EC2 (e.g. hostname, security groups, etc.)
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#
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name = StringProperty(unique=True, verbose_name="Name")
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description = StringProperty(verbose_name="Description")
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region_name = StringProperty(verbose_name="EC2 Region Name")
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instance_id = StringProperty(verbose_name="EC2 Instance ID")
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elastic_ip = StringProperty(verbose_name="EC2 Elastic IP Address")
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production = BooleanProperty(verbose_name="Is This Server Production", default=False)
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ami_id = CalculatedProperty(verbose_name="AMI ID", calculated_type=str, use_method=True)
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zone = CalculatedProperty(verbose_name="Availability Zone Name", calculated_type=str, use_method=True)
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hostname = CalculatedProperty(verbose_name="Public DNS Name", calculated_type=str, use_method=True)
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private_hostname = CalculatedProperty(verbose_name="Private DNS Name", calculated_type=str, use_method=True)
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groups = CalculatedProperty(verbose_name="Security Groups", calculated_type=list, use_method=True)
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security_group = CalculatedProperty(verbose_name="Primary Security Group Name", calculated_type=str, use_method=True)
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key_name = CalculatedProperty(verbose_name="Key Name", calculated_type=str, use_method=True)
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instance_type = CalculatedProperty(verbose_name="Instance Type", calculated_type=str, use_method=True)
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status = CalculatedProperty(verbose_name="Current Status", calculated_type=str, use_method=True)
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launch_time = CalculatedProperty(verbose_name="Server Launch Time", calculated_type=str, use_method=True)
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console_output = CalculatedProperty(verbose_name="Console Output", calculated_type=open, use_method=True)
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packages = []
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plugins = []
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@classmethod
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def add_credentials(cls, cfg, aws_access_key_id, aws_secret_access_key):
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if not cfg.has_section('Credentials'):
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cfg.add_section('Credentials')
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cfg.set('Credentials', 'aws_access_key_id', aws_access_key_id)
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cfg.set('Credentials', 'aws_secret_access_key', aws_secret_access_key)
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if not cfg.has_section('DB_Server'):
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cfg.add_section('DB_Server')
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cfg.set('DB_Server', 'db_type', 'SimpleDB')
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cfg.set('DB_Server', 'db_name', cls._manager.domain.name)
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@classmethod
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def create(cls, config_file=None, logical_volume = None, cfg = None, **params):
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"""
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Create a new instance based on the specified configuration file or the specified
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configuration and the passed in parameters.
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If the config_file argument is not None, the configuration is read from there.
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Otherwise, the cfg argument is used.
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The config file may include other config files with a #import reference. The included
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config files must reside in the same directory as the specified file.
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The logical_volume argument, if supplied, will be used to get the current physical
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volume ID and use that as an override of the value specified in the config file. This
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may be useful for debugging purposes when you want to debug with a production config
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file but a test Volume.
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The dictionary argument may be used to override any EC2 configuration values in the
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config file.
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"""
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if config_file:
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cfg = Config(path=config_file)
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if cfg.has_section('EC2'):
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# include any EC2 configuration values that aren't specified in params:
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for option in cfg.options('EC2'):
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if option not in params:
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params[option] = cfg.get('EC2', option)
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getter = CommandLineGetter()
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getter.get(cls, params)
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region = params.get('region')
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ec2 = region.connect()
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cls.add_credentials(cfg, ec2.aws_access_key_id, ec2.aws_secret_access_key)
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ami = params.get('ami')
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kp = params.get('keypair')
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group = params.get('group')
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zone = params.get('zone')
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# deal with possibly passed in logical volume:
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if logical_volume != None:
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cfg.set('EBS', 'logical_volume_name', logical_volume.name)
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cfg_fp = StringIO()
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cfg.write(cfg_fp)
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# deal with the possibility that zone and/or keypair are strings read from the config file:
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if isinstance(zone, Zone):
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zone = zone.name
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if isinstance(kp, KeyPair):
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kp = kp.name
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reservation = ami.run(min_count=1,
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max_count=params.get('quantity', 1),
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key_name=kp,
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security_groups=[group],
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instance_type=params.get('instance_type'),
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placement = zone,
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user_data = cfg_fp.getvalue())
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l = []
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i = 0
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elastic_ip = params.get('elastic_ip')
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instances = reservation.instances
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if elastic_ip is not None and instances.__len__() > 0:
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instance = instances[0]
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print('Waiting for instance to start so we can set its elastic IP address...')
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# Sometimes we get a message from ec2 that says that the instance does not exist.
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# Hopefully the following delay will giv eec2 enough time to get to a stable state:
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time.sleep(5)
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while instance.update() != 'running':
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time.sleep(1)
|
||
|
|
instance.use_ip(elastic_ip)
|
||
|
|
print('set the elastic IP of the first instance to %s' % elastic_ip)
|
||
|
|
for instance in instances:
|
||
|
|
s = cls()
|
||
|
|
s.ec2 = ec2
|
||
|
|
s.name = params.get('name') + '' if i==0 else str(i)
|
||
|
|
s.description = params.get('description')
|
||
|
|
s.region_name = region.name
|
||
|
|
s.instance_id = instance.id
|
||
|
|
if elastic_ip and i == 0:
|
||
|
|
s.elastic_ip = elastic_ip
|
||
|
|
s.put()
|
||
|
|
l.append(s)
|
||
|
|
i += 1
|
||
|
|
return l
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def create_from_instance_id(cls, instance_id, name, description=''):
|
||
|
|
regions = boto.ec2.regions()
|
||
|
|
for region in regions:
|
||
|
|
ec2 = region.connect()
|
||
|
|
try:
|
||
|
|
rs = ec2.get_all_reservations([instance_id])
|
||
|
|
except:
|
||
|
|
rs = []
|
||
|
|
if len(rs) == 1:
|
||
|
|
s = cls()
|
||
|
|
s.ec2 = ec2
|
||
|
|
s.name = name
|
||
|
|
s.description = description
|
||
|
|
s.region_name = region.name
|
||
|
|
s.instance_id = instance_id
|
||
|
|
s._reservation = rs[0]
|
||
|
|
for instance in s._reservation.instances:
|
||
|
|
if instance.id == instance_id:
|
||
|
|
s._instance = instance
|
||
|
|
s.put()
|
||
|
|
return s
|
||
|
|
return None
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def create_from_current_instances(cls):
|
||
|
|
servers = []
|
||
|
|
regions = boto.ec2.regions()
|
||
|
|
for region in regions:
|
||
|
|
ec2 = region.connect()
|
||
|
|
rs = ec2.get_all_reservations()
|
||
|
|
for reservation in rs:
|
||
|
|
for instance in reservation.instances:
|
||
|
|
try:
|
||
|
|
next(Server.find(instance_id=instance.id))
|
||
|
|
boto.log.info('Server for %s already exists' % instance.id)
|
||
|
|
except StopIteration:
|
||
|
|
s = cls()
|
||
|
|
s.ec2 = ec2
|
||
|
|
s.name = instance.id
|
||
|
|
s.region_name = region.name
|
||
|
|
s.instance_id = instance.id
|
||
|
|
s._reservation = reservation
|
||
|
|
s.put()
|
||
|
|
servers.append(s)
|
||
|
|
return servers
|
||
|
|
|
||
|
|
def __init__(self, id=None, **kw):
|
||
|
|
super(Server, self).__init__(id, **kw)
|
||
|
|
self.ssh_key_file = None
|
||
|
|
self.ec2 = None
|
||
|
|
self._cmdshell = None
|
||
|
|
self._reservation = None
|
||
|
|
self._instance = None
|
||
|
|
self._setup_ec2()
|
||
|
|
|
||
|
|
def _setup_ec2(self):
|
||
|
|
if self.ec2 and self._instance and self._reservation:
|
||
|
|
return
|
||
|
|
if self.id:
|
||
|
|
if self.region_name:
|
||
|
|
for region in boto.ec2.regions():
|
||
|
|
if region.name == self.region_name:
|
||
|
|
self.ec2 = region.connect()
|
||
|
|
if self.instance_id and not self._instance:
|
||
|
|
try:
|
||
|
|
rs = self.ec2.get_all_reservations([self.instance_id])
|
||
|
|
if len(rs) >= 1:
|
||
|
|
for instance in rs[0].instances:
|
||
|
|
if instance.id == self.instance_id:
|
||
|
|
self._reservation = rs[0]
|
||
|
|
self._instance = instance
|
||
|
|
except EC2ResponseError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
def _status(self):
|
||
|
|
status = ''
|
||
|
|
if self._instance:
|
||
|
|
self._instance.update()
|
||
|
|
status = self._instance.state
|
||
|
|
return status
|
||
|
|
|
||
|
|
def _hostname(self):
|
||
|
|
hostname = ''
|
||
|
|
if self._instance:
|
||
|
|
hostname = self._instance.public_dns_name
|
||
|
|
return hostname
|
||
|
|
|
||
|
|
def _private_hostname(self):
|
||
|
|
hostname = ''
|
||
|
|
if self._instance:
|
||
|
|
hostname = self._instance.private_dns_name
|
||
|
|
return hostname
|
||
|
|
|
||
|
|
def _instance_type(self):
|
||
|
|
it = ''
|
||
|
|
if self._instance:
|
||
|
|
it = self._instance.instance_type
|
||
|
|
return it
|
||
|
|
|
||
|
|
def _launch_time(self):
|
||
|
|
lt = ''
|
||
|
|
if self._instance:
|
||
|
|
lt = self._instance.launch_time
|
||
|
|
return lt
|
||
|
|
|
||
|
|
def _console_output(self):
|
||
|
|
co = ''
|
||
|
|
if self._instance:
|
||
|
|
co = self._instance.get_console_output()
|
||
|
|
return co
|
||
|
|
|
||
|
|
def _groups(self):
|
||
|
|
gn = []
|
||
|
|
if self._reservation:
|
||
|
|
gn = self._reservation.groups
|
||
|
|
return gn
|
||
|
|
|
||
|
|
def _security_group(self):
|
||
|
|
groups = self._groups()
|
||
|
|
if len(groups) >= 1:
|
||
|
|
return groups[0].id
|
||
|
|
return ""
|
||
|
|
|
||
|
|
def _zone(self):
|
||
|
|
zone = None
|
||
|
|
if self._instance:
|
||
|
|
zone = self._instance.placement
|
||
|
|
return zone
|
||
|
|
|
||
|
|
def _key_name(self):
|
||
|
|
kn = None
|
||
|
|
if self._instance:
|
||
|
|
kn = self._instance.key_name
|
||
|
|
return kn
|
||
|
|
|
||
|
|
def put(self):
|
||
|
|
super(Server, self).put()
|
||
|
|
self._setup_ec2()
|
||
|
|
|
||
|
|
def delete(self):
|
||
|
|
if self.production:
|
||
|
|
raise ValueError("Can't delete a production server")
|
||
|
|
#self.stop()
|
||
|
|
super(Server, self).delete()
|
||
|
|
|
||
|
|
def stop(self):
|
||
|
|
if self.production:
|
||
|
|
raise ValueError("Can't delete a production server")
|
||
|
|
if self._instance:
|
||
|
|
self._instance.stop()
|
||
|
|
|
||
|
|
def terminate(self):
|
||
|
|
if self.production:
|
||
|
|
raise ValueError("Can't delete a production server")
|
||
|
|
if self._instance:
|
||
|
|
self._instance.terminate()
|
||
|
|
|
||
|
|
def reboot(self):
|
||
|
|
if self._instance:
|
||
|
|
self._instance.reboot()
|
||
|
|
|
||
|
|
def wait(self):
|
||
|
|
while self.status != 'running':
|
||
|
|
time.sleep(5)
|
||
|
|
|
||
|
|
def get_ssh_key_file(self):
|
||
|
|
if not self.ssh_key_file:
|
||
|
|
ssh_dir = os.path.expanduser('~/.ssh')
|
||
|
|
if os.path.isdir(ssh_dir):
|
||
|
|
ssh_file = os.path.join(ssh_dir, '%s.pem' % self.key_name)
|
||
|
|
if os.path.isfile(ssh_file):
|
||
|
|
self.ssh_key_file = ssh_file
|
||
|
|
if not self.ssh_key_file:
|
||
|
|
iobject = IObject()
|
||
|
|
self.ssh_key_file = iobject.get_filename('Path to OpenSSH Key file')
|
||
|
|
return self.ssh_key_file
|
||
|
|
|
||
|
|
def get_cmdshell(self):
|
||
|
|
if not self._cmdshell:
|
||
|
|
from boto.manage import cmdshell
|
||
|
|
self.get_ssh_key_file()
|
||
|
|
self._cmdshell = cmdshell.start(self)
|
||
|
|
return self._cmdshell
|
||
|
|
|
||
|
|
def reset_cmdshell(self):
|
||
|
|
self._cmdshell = None
|
||
|
|
|
||
|
|
def run(self, command):
|
||
|
|
with closing(self.get_cmdshell()) as cmd:
|
||
|
|
status = cmd.run(command)
|
||
|
|
return status
|
||
|
|
|
||
|
|
def get_bundler(self, uname='root'):
|
||
|
|
self.get_ssh_key_file()
|
||
|
|
return Bundler(self, uname)
|
||
|
|
|
||
|
|
def get_ssh_client(self, uname='root', ssh_pwd=None):
|
||
|
|
from boto.manage.cmdshell import SSHClient
|
||
|
|
self.get_ssh_key_file()
|
||
|
|
return SSHClient(self, uname=uname, ssh_pwd=ssh_pwd)
|
||
|
|
|
||
|
|
def install(self, pkg):
|
||
|
|
return self.run('apt-get -y install %s' % pkg)
|
||
|
|
|
||
|
|
|
||
|
|
|