def delete_unschedulable_pods(api: CoreV1Api, namespace: str):
"""
Delete pods that are unschedulable due to a missing persistent volume claim.
A stateful set may create a pod attached to a missing persistent volume
claim if the pod is recreated while the persistent volume claim is pending
delete.
When this happens, delete the pod so that the stateful set will create a
new persistent volume claim when it next creates the pod.
"""
for pod in api.list_namespaced_pod(namespace).items:
if _unschedulable_due_to_pvc(pod):
logger.info(f"deleting unschedulable pod: {pod.metadata.name}")
try:
api.delete_namespaced_pod(
name=pod.metadata.name,
namespace=namespace,
body=V1DeleteOptions(
grace_period_seconds=0,
propagation_policy="Background",
preconditions=V1Preconditions(
resource_version=pod.metadata.resource_version,
uid=pod.metadata.uid,
),
),
)
except ApiException as e:
if e.reason not in (CONFLICT, NOT_FOUND):
raise
logger.info(f"pod already deleted or updated: {pod.metadata.name}")
def restart_web_pods(api: CoreV1Api):
for pod in api.list_namespaced_pod("default").items:
if pod.metadata.labels.get("app") != "web":
continue
api.delete_namespaced_pod(
pod.metadata.name,
pod.metadata.namespace,
body=V1DeleteOptions(
grace_period_seconds=0,
propagation_policy="Background",
preconditions=V1Preconditions(
resource_version=pod.metadata.resource_version,
uid=pod.metadata.uid,
),
),
)
def delete_pod(core: CoreV1Api, namespace: str, pod_name: str):
core.delete_namespaced_pod(pod_name, namespace, V1DeleteOptions())
