hussein-awala commented on issue #29432:
URL: https://github.com/apache/airflow/issues/29432#issuecomment-1437570393
@jose-lpa using `Variable.get()` in the dag script is not recommended
because the `DagFileProcessor` process the script each X minutes, and it loads
this variable from the DB. Also this solution works with Variable but not all
the other jinja templates.
@pshrivastava27 here is a solution for your need
```python
import datetime
import os
from airflow import models
from airflow.providers.cncf.kubernetes.operators.kubernetes_pod import (
KubernetesPodOperator,
)
from kubernetes.client import models as k8s_models
dvt_image = os.environ.get("DVT_IMAGE", "dev")
default_dag_args = {"start_date": datetime.datetime(2022, 1, 1)}
class PatchedResourceRequirements(k8s_models.V1ResourceRequirements):
template_fields = ("limits", "requests")
def pod_mem():
return "4000M"
def pod_cpu():
return "1000m"
with models.DAG(
"sample_dag",
schedule_interval=None,
default_args=default_dag_args,
render_template_as_native_obj=True,
user_defined_macros={
"pod_mem": pod_mem,
"pod_cpu": pod_cpu,
},
) as dag:
task_1 = KubernetesPodOperator(
task_id="task_1",
name="task_1",
namespace="default",
image=dvt_image,
cmds=["bash", "-cx"],
arguments=["echo hello"],
service_account_name="sa-k8s",
container_resources=PatchedResourceRequirements(
limits={
"memory": "{{ pod_mem() }}",
"cpu": "{{ pod_cpu() }}",
}
),
startup_timeout_seconds=1800,
get_logs=True,
image_pull_policy="Always",
config_file="/home/airflow/composer_kube_config",
dag=dag,
)
task_2 = KubernetesPodOperator.partial(
task_id="task_2",
name="task_2",
namespace="default",
image=dvt_image,
cmds=["bash", "-cx"],
service_account_name="sa-k8s",
container_resources=PatchedResourceRequirements(
limits={
"memory": "{{ pod_mem() }}",
"cpu": "{{ pod_cpu() }}",
}
),
startup_timeout_seconds=1800,
get_logs=True,
image_pull_policy="Always",
config_file="/home/airflow/composer_kube_config",
dag=dag,
).expand(arguments=[["echo hello"]])
task_1 >> task_2
```
You can do the same for the other classes if needed.
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