Jon Davies created AIRFLOW-2726:
-----------------------------------
Summary: Kubernetes init container has no resiliency against
unavailable DB
Key: AIRFLOW-2726
URL: https://issues.apache.org/jira/browse/AIRFLOW-2726
Project: Apache Airflow
Issue Type: Bug
Reporter: Jon Davies
If one runs:
```
~/git/incubator-airflow/scripts/ci/kubernetes$ kubectl apply
--namespace=testing-airflow -f kube/
```
The container fails with:
```
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not
translate host name "postgres-airflow" to address: Name or service not known
```
...and then the pod tries to go into a Running state before
CrashLoopBackOff'ing about:
```
sqlalchemy.exc.InvalidRequestError: This Session's transaction has been rolled
back due to a previous exception during flush. To begin a new transaction with
this Session, first issue Session.rollback(). Original exception was:
(psycopg2.ProgrammingError) relation "log" does not exist
LINE 1: INSERT INTO log (dttm, dag_id, task_id, event, execution_dat...
```
The init container should catch the unavailable DB and retry.
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