Is it possible to add a new config for allowing the user specify the log saving location?

[hh54188]

Everytime when I try to run the ADK application I can only run it in the terminal which in admin mode, otherwise I will receive this error message:

OSError: [WinError 1314] A required privilege is not held by the client: 
'C:\\Users\\XXX\\AppData\\Local\\Temp\\agents_log\\agent.20251106_232556.log' -> 
'C:\\Users\\XXX\\AppData\\Local\\Temp\\agents_log\\agent.latest.log'

It looks like because the ADK wants to save the log in the AppData folder by default? If we can add a new config to allow the developer to specify the log save location it would be better.

Thank you

[hangfei]

@adk-bot

[adk-bot]

Response from ADK Answering Agent (experimental, answer may be inaccurate)

TLDR: You can configure the log saving location yourself. ADK uses Python's standard logging module, which allows you to specify the log file path in your application's entry point.

---

Hi @hh54188,

Thanks for your question and suggestion.

The Agent Development Kit (ADK) uses Python's standard logging module, which gives you full control over the logging configuration. [1] This means you can specify the log file location in your application's entry point, which will solve the permissions issue you're encountering.

You can use logging.basicConfig() to set the output file for the logs. For example:

import logging

logging.basicConfig(
    filename='/path/to/your/desired/log/location/agent.log',
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)

# Now you can proceed with your ADK application initialization
# ...

By adding this to the beginning of your script, all subsequent logs from your application and the ADK will be written to the file you specified. You can choose any path where your user has write permissions.

For more details on how to configure logging in ADK, you can refer to the official documentation. [1]

Let me know if you have any other questions!

[1] https://google.github.io/adk-docs/observability/logging/

[adk-bot]

Response from ADK Answering Agent (experimental, answer may be inaccurate)

TLDR: You can configure Python's standard logging module at the beginning of your application to redirect logs to a file in a location of your choice.

---

Hi @hh54188,

Thank you for your feedback. You are right that the default logging behavior can cause permission issues on certain systems.

The ADK uses Python's standard logging module, which allows you to fully customize the logging configuration. [1] To save logs to a specific file, you can add the following configuration at the entry point of your application, before you initialize the ADK.

This will direct all logs to a file named agent.log in the current directory, which should avoid the permissions error you are seeing.

import logging
import os

# Create a logs directory if it doesn't exist
log_dir = 'logs'
if not os.path.exists(log_dir):
    os.makedirs(log_dir)

logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(name)s - %(message)s',
    filename=os.path.join(log_dir, 'agent.log'),  # Log to a file
    filemode='a'  # Append to the log file
)

# Your ADK agent code follows...

This approach gives you full control over the log location, format, and rotation. Please let us know if you have any further questions.

[1] https://google.github.io/adk-docs/observability/logging/

[hh54188]

Hi @adk-bot @hangfei , the answer provided by the AI doens't work, here are my sample code:

from google.adk.agents.llm_agent import Agent
import logging
import os

log_location=os.path.join(os.path.dirname(__file__), 'custom_location.log')

logging.basicConfig(
    filename=log_location
)

def get_project_creator() -> dict:
    """Returns the creator's information of the project."""
    return {
        "name": xxx",
    }

root_agent = Agent(
    model='gemini-2.5-flash',
    name='creator_checker_agent',
    description="Tells the creator's information of the project.",
    instruction="You are a helpful assistant that tells the creator's information of the project. Use the 'get_project_creator' tool for this purpose.",
    tools=[get_project_creator],
)

I still got the same error:

OSError: [WinError 1314]  A required privilege is not held by the client: 'C:\\Users\\LIGUNA~1\\AppData\\Local\\Temp\\agents_log\\agent.20251110_191537.log' -> 'C:\\Users\\LIGUNA~1\\AppData\\Local\\Temp\\agents_log\\agent.latest.log'

From the error message you can see the filename config doesn't work

[davidorive]

Hi @hh54188 , as far as I understood the problem is not the path itself, but the privileges required to create symlinks. If you are not an admin, the only solution I have found is to go to file agent_adk\lib\site-packages\google\adk\cli\utils\logs.py and change this:

latest_log_link = os.path.join(log_dir, f'{log_file_prefix}.latest.log')
if os.path.islink(latest_log_link):
  os.unlink(latest_log_link)
os.symlink(log_filepath, latest_log_link)

print(f'To access latest log: tail -F {latest_log_link}')
return log_filepath

by this:

import shutil

latest_log_link = os.path.join(log_dir, f'{log_file_prefix}.latest.log')

# Remove the file if it exists (symlinks or regular files)
if os.path.exists(latest_log_link):
    os.remove(latest_log_link)

# Copy the log file to 'latest_log_link'
shutil.copy2(log_filepath, latest_log_link)

print(f'To access latest log: tail -F {latest_log_link}')
return log_filepath

Hope it helps.