Another task is already deleting logs on this worker node.

[gfelot]

Trying to using the log_cleaner script.
I have a simple installation where the DAG finish to show like this :

But everytime the DAG run I got the message :

Another task is already deleting logs on this worker node.     Skipping it!
If you believe you're receiving this message in error, kindly check     if /tmp/airflow_log_cleanup_worker.lock exists and delete it.

I can delete the file mention but still have the same issue all the time. The logs are not remove even if the DAG finish as success.

How can I fix this ?

[Jaroslaw-Rachwalski]

The issue is with running the tasks on one worker. Chaining tasks on one worker could help.
@gfelot try this:

from airflow.models.baseoperator import chain
for log_cleanup_id in range(1, NUMBER_OF_WORKERS + 1):

    log_cleanup_op_worker_list = []
    for dir_id, directory in enumerate(DIRECTORIES_TO_DELETE):

        log_cleanup_op = BashOperator(
            task_id='log_cleanup_worker_num_' +
            str(log_cleanup_id) + '_dir_' + str(dir_id),
            bash_command=log_cleanup,
            params={
                "directory": str(directory),
                "sleep_time": int(log_cleanup_id)*3},
            dag=dag)

        log_cleanup_op_worker_list.append(log_cleanup_op)
    
    chain(start, *log_cleanup_op_worker_list)