pshrivastava27 commented on issue #29432:
URL: https://github.com/apache/airflow/issues/29432#issuecomment-1437887986
> @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.
Thanks for the help! @hussein-awala
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