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* Apply an upstream patch to prevent dnsmasq from segfaulting due to
bad data from nova-dhcpbridge. svn path=/nixpkgs/branches/modular-python/; revision=26661
This commit is contained in:
Eelco Dolstra
parent
601aeb1aa8
commit
fbfb7714d0
@ -12,6 +12,9 @@ stdenv.mkDerivation rec {
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sha256 = "0xd7cxn60vzhkvjwnj0i6jfcxaggwwyw2pnhl4qnb759q9hvk1b9";
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};
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patches =
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[ ./fix-dhcpbridge-output.patch ];
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pythonPath = with pythonPackages;
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[ setuptools eventlet greenlet gflags netaddr sqlalchemy carrot routes
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paste_deploy m2crypto ipy boto_1_9 twisted sqlalchemy_migrate
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@ -0,0 +1,124 @@
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Prevent dnsmasq from segfaulting.
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https://code.launchpad.net/~soren/nova/dnsmasq-leasesfile-init/+merge/52421
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diff -ru nova-2011.1.1-orig//bin/nova-dhcpbridge nova-2011.1.1//bin/nova-dhcpbridge
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--- nova-2011.1.1-orig//bin/nova-dhcpbridge 2011-02-24 19:51:54.000000000 +0100
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+++ nova-2011.1.1//bin/nova-dhcpbridge 2011-04-01 17:49:53.848659259 +0200
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@@ -94,7 +94,7 @@
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"""Get the list of hosts for an interface."""
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ctxt = context.get_admin_context()
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network_ref = db.network_get_by_bridge(ctxt, interface)
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- return linux_net.get_dhcp_hosts(ctxt, network_ref['id'])
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+ return linux_net.get_dhcp_leases(ctxt, network_ref['id'])
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def main():
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diff -ru nova-2011.1.1-orig//nova/network/linux_net.py nova-2011.1.1//nova/network/linux_net.py
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--- nova-2011.1.1-orig//nova/network/linux_net.py 2011-02-24 19:51:54.000000000 +0100
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+++ nova-2011.1.1//nova/network/linux_net.py 2011-04-01 17:50:37.315585644 +0200
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@@ -18,6 +18,7 @@
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"""
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import os
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+import calendar
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from nova import db
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from nova import flags
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@@ -48,6 +49,8 @@
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'location of nova-dhcpbridge')
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flags.DEFINE_string('routing_source_ip', '$my_ip',
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'Public IP of network host')
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+flags.DEFINE_integer('dhcp_lease_time', 120,
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+ 'Lifetime of a DHCP lease')
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flags.DEFINE_bool('use_nova_chains', False,
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'use the nova_ routing chains instead of default')
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@@ -218,8 +221,17 @@
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_confirm_rule("FORWARD", "-j nova-local")
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+def get_dhcp_leases(context, network_id):
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+ """Return a network's hosts config in dnsmasq leasefile format"""
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+ hosts = []
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+ for fixed_ip_ref in db.network_get_associated_fixed_ips(context,
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+ network_id):
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+ hosts.append(_host_lease(fixed_ip_ref))
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+ return '\n'.join(hosts)
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+
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+
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def get_dhcp_hosts(context, network_id):
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- """Get a string containing a network's hosts config in dnsmasq format"""
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+ """Get a string containing a network's hosts config in dhcp-host format"""
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hosts = []
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for fixed_ip_ref in db.network_get_associated_fixed_ips(context,
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network_id):
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@@ -310,8 +322,24 @@
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utils.get_my_linklocal(network_ref['bridge'])})
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+def _host_lease(fixed_ip_ref):
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+ """Return a host string for an address in leasefile format"""
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+ instance_ref = fixed_ip_ref['instance']
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+ if instance_ref['updated_at']:
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+ timestamp = instance_ref['updated_at']
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+ else:
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+ timestamp = instance_ref['created_at']
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+
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+ seconds_since_epoch = calendar.timegm(timestamp.utctimetuple())
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+
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+ return "%d %s %s %s *" % (seconds_since_epoch + FLAGS.dhcp_lease_time,
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+ instance_ref['mac_address'],
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+ fixed_ip_ref['address'],
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+ instance_ref['hostname'] or '*')
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+
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+
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def _host_dhcp(fixed_ip_ref):
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- """Return a host string for an address"""
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+ """Return a host string for an address in dhcp-host format"""
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instance_ref = fixed_ip_ref['instance']
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return "%s,%s.novalocal,%s" % (instance_ref['mac_address'],
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instance_ref['hostname'],
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diff -ru nova-2011.1.1-orig//nova/tests/test_network.py nova-2011.1.1//nova/tests/test_network.py
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--- nova-2011.1.1-orig//nova/tests/test_network.py 2011-02-24 19:51:54.000000000 +0100
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+++ nova-2011.1.1//nova/tests/test_network.py 2011-04-01 17:49:53.849659365 +0200
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@@ -20,6 +20,7 @@
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"""
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import IPy
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import os
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+import time
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from nova import context
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from nova import db
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@@ -320,6 +321,31 @@
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network['id'])
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self.assertEqual(ip_count, num_available_ips)
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+ def test_dhcp_lease_output(self):
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+ admin_ctxt = context.get_admin_context()
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+ address = self._create_address(0, self.instance_id)
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+ lease_ip(address)
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+ network_ref = db.network_get_by_instance(admin_ctxt, self.instance_id)
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+ leases = linux_net.get_dhcp_leases(context.get_admin_context(),
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+ network_ref['id'])
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+ for line in leases.split('\n'):
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+ seconds, mac, ip, hostname, client_id = line.split(' ')
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+ self.assertTrue(int(seconds) > time.time(), 'Lease expires in '
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+ 'the past')
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+ octets = mac.split(':')
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+ self.assertEqual(len(octets), 6, "Wrong number of octets "
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+ "in %s" % (max,))
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+ for octet in octets:
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+ self.assertEqual(len(octet), 2, "Oddly sized octet: %s"
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+ % (octet,))
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+ # This will throw an exception if the octet is invalid
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+ int(octet, 16)
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+
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+ # And this will raise an exception in case of an invalid IP
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+ IPy.IP(ip)
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+
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+ release_ip(address)
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+
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def is_allocated_in_project(address, project_id):
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"""Returns true if address is in specified project"""
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