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e196c1727e
We change seeds in `ScyllaCluster.server_start` to all currently running nodes. The previous code only pretended that it did it. After doing this change, writing tests that create multiple clusters is impossible. To allow it, we add the `seeds` parameter to `ManagerClient.server_start`. We use it to fix and simplify the only test that creates two clusters - `test_different_group0_ids`.
57 lines
2.5 KiB
Python
57 lines
2.5 KiB
Python
#
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# Copyright (C) 2023-present ScyllaDB
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#
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# SPDX-License-Identifier: AGPL-3.0-or-later
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#
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from test.pylib.manager_client import ManagerClient
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import asyncio
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import pytest
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@pytest.mark.asyncio
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async def test_different_group0_ids(manager: ManagerClient):
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"""
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The reproducer for #14448.
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The test starts two nodes with different group0_ids. The second node
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is restarted and tries to join the cluster consisting of the first node.
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gossip_digest_syn message should be rejected by the first node, so
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the second node will not be able to join the cluster.
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This test uses repair-based node operations to make this test easier.
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If the second node successfully joins the cluster, their tokens metadata
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will be merged and the repair service will allow to decommission the second node.
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If not - decommissioning the second node will fail with an exception
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"zero replica after the removal" thrown by the repair service.
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"""
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# Consistent topology changes are disabled to use repair based node operations.
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scylla_a = await manager.server_add(config={'force_gossip_topology_changes': True})
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scylla_b = await manager.server_add(start=False, config={'force_gossip_topology_changes': True})
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await manager.server_start(scylla_b.server_id, seeds=[scylla_b.ip_addr])
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await manager.server_stop(scylla_b.server_id)
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await manager.server_start(scylla_b.server_id, seeds=[scylla_a.ip_addr, scylla_b.ip_addr])
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log_file_a = await manager.server_open_log(scylla_a.server_id)
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log_file_b = await manager.server_open_log(scylla_b.server_id)
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# Wait for a gossip round to finish
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_, pending = await asyncio.wait([
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asyncio.create_task(log_file_b.wait_for(f'InetAddress {scylla_a.ip_addr} is now UP')), # The second node joins the cluster
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asyncio.create_task(log_file_a.wait_for(f'Group0Id mismatch')) # The first node discards gossip from the second node
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], return_when=asyncio.FIRST_COMPLETED)
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for task in pending:
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task.cancel()
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# Check if decommissioning the second node fails.
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# Repair service throws a runtime exception "zero replica after the removal"
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# when it tries to remove the only one node from the cluster.
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# If it is not thrown, it means that the second node successfully send a gossip
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# to the first node and they merged their tokens metadata.
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with pytest.raises(Exception, match='zero replica after the removal'):
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await manager.decommission_node(scylla_b.server_id)
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