mirror of
https://github.com/outbackdingo/patroni.git
synced 2026-08-25 14:53:37 +00:00
Alexander KukushkinandGitHub
bc15813de0
Create permanent physical replication slots on standby nodes and use `pg_replication_slot_advance()` function to move them forward. The `restart_lsn` is advanced based on values stored in the `/status` key by the primary node. When slot is created on a replica it could be ahead the same slot on the primary and therefore there is some period of time when it doesn't protect WAL files from being recycled.
35 lines
2.1 KiB
Gherkin
35 lines
2.1 KiB
Gherkin
Feature: permanent slots
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Scenario: check that physical permanent slots are created
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Given I start postgres0
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Then postgres0 is a leader after 10 seconds
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And there is a non empty initialize key in DCS after 15 seconds
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When I issue a PATCH request to http://127.0.0.1:8008/config with {"slots": {"test_physical": {"type": "physical"}}, "postgresql": {"parameters": {"wal_level": "logical"}}}
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Then I receive a response code 200
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And Response on GET http://127.0.0.1:8008/config contains slots after 10 seconds
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Then postgres0 has a physical replication slot named test_physical after 10 seconds
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And I start postgres1
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@slot-advance
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Scenario: check that logical permanent slots are created
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Given I run patronictl.py restart batman postgres0 --force
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And I issue a PATCH request to http://127.0.0.1:8008/config with {"slots": {"test_logical": {"type": "logical", "database": "postgres", "plugin": "test_decoding"}}}
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Then postgres0 has a logical replication slot named test_logical with the test_decoding plugin after 10 seconds
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@slot-advance
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Scenario: check that permanent slots are created on the replica
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Given postgres1 has a logical replication slot named test_logical with the test_decoding plugin after 10 seconds
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Then Logical slot test_logical is in sync between postgres0 and postgres1 after 10 seconds
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And postgres1 has a physical replication slot named test_physical after 2 seconds
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@slot-advance
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Scenario: check that permanent slots are advanced on the replica
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Given I add the table replicate_me to postgres0
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And I get all changes from physical slot test_physical on postgres0
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When I get all changes from logical slot test_logical on postgres0
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Then Logical slot test_logical is in sync between postgres0 and postgres1 after 10 seconds
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And Physical slot test_physical is in sync between postgres0 and postgres1 after 10 seconds
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Scenario: check permanent physical replication slot after failover
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Given I shut down postgres0
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Then postgres1 has a physical replication slot named test_physical after 10 seconds
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