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fix(computes): a VM migrates to its host's panel address when it has no migration address

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Without a migration address libvirt sends a migrating VM to the
destination's own host name, which the source host often cannot resolve:
a live migration to a host added without one failed ("Unable to resolve
address ..."), also when the other host had one. The destination's
address on the Computes page, which the panel reaches it at, is now the
default; the migration address stays for another network. A host the
panel reaches on its loopback keeps libvirt's default.
This commit is contained in:
catborise 2026-11-01 17:59:39 +03:00
parent 940e639149
commit cf991adad5
8 changed files with 74 additions and 23 deletions
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12
computes/tests/test_migration_address.py
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@ -26,11 +26,19 @@ class MigrationAddressTests(TestCase):
validate_migration_address(value)
def test_migration_uri(self):
cases = {"": None, "192.0.2.12": "tcp://192.0.2.12", "kvm102.example.org": "tcp://kvm102.example.org",
cases = {"192.0.2.12": "tcp://192.0.2.12", "kvm102.example.org": "tcp://kvm102.example.org",
"2001:db8::12": "tcp://[2001:db8::12]"}
for address, uri in cases.items():
with self.subTest(address=address):
self.assertEqual(Compute(migration_address=address).migration_uri, uri)
self.assertEqual(Compute(hostname="192.0.2.40", migration_address=address).migration_uri, uri)
def test_without_a_migration_address_the_panel_s_address_of_the_host_is_used(self):
# no DNS name of the host's own; a host the panel reaches on its loopback: libvirt's default
cases = {"192.0.2.40": "tcp://192.0.2.40", "kvm103.example.org": "tcp://kvm103.example.org",
"localhost": None, "LOCALHOST": None, "localhost.": None, "127.0.0.1": None}
for hostname, uri in cases.items():
with self.subTest(hostname=hostname):
self.assertEqual(Compute(hostname=hostname, migration_address="").migration_uri, uri)
def test_the_compute_form_saves_it(self):
self.client.force_login(get_user_model().objects.create_superuser("ma-admin", "ma@example.com", "pw"))