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Make K8s retriable HTTP status code configurable (#2585)

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Configuration parameter is `kubernetes.retriable_http_codes` or `PATRONI_KUBERNETES_RETRIABLE_HTTP_CODES` environment variable.

These status codes are added to the default list of 500, 503, 504.

Close https://github.com/zalando/patroni/issues/2536
This commit is contained in:
Alexander Kukushkin
2023-03-10 09:38:12 +01:00
committed by GitHub
parent 8622fcea3d
commit eefa15b390
8 changed files with 54 additions and 8 deletions
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tests/test_config.py
+1
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@@ -61,6 +61,7 @@ class TestConfig(unittest.TestCase):
'PATRONI_KUBERNETES_LABELS': 'a: b: c',
'PATRONI_KUBERNETES_SCOPE_LABEL': 'a',
'PATRONI_KUBERNETES_PORTS': '[{"name": "postgresql"}]',
'PATRONI_KUBERNETES_RETRIABLE_HTTP_CODES': '401',
'PATRONI_ZOOKEEPER_HOSTS': "'host1:2181','host2:2181'",
'PATRONI_EXHIBITOR_HOSTS': 'host1,host2',
'PATRONI_EXHIBITOR_PORT': '8181',
tests/test_kubernetes.py
+11
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@@ -317,6 +317,17 @@ class TestKubernetesConfigMaps(BaseTestKubernetes):
def test_set_history_value(self):
self.k.set_history_value('{}')
@patch('patroni.dcs.kubernetes.logger.warning')
def test_reload_config(self, mock_warning):
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': '401, 403 '})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([401, 403]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': 402})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([402]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': [405, 406]})
self.assertEqual(self.k._api._retriable_http_codes, self.k._api._DEFAULT_RETRIABLE_HTTP_CODES | set([405, 406]))
self.k.reload_config({'loop_wait': 10, 'ttl': 30, 'retry_timeout': 10, 'retriable_http_codes': True})
mock_warning.assert_called_once()
class TestKubernetesEndpoints(BaseTestKubernetes):
tests/test_validator.py
+1
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@@ -59,6 +59,7 @@ config = {
"use_endpoints": False,
"pod_ip": "127.0.0.1",
"ports": [{"name": "string", "port": 1000}],
"retriable_http_codes": [401],
},
"postgresql": {
"listen": "127.0.0.2,::1:543",