# Python APM Agent for Flask doesn't report metrics **URL:** \ **Category:** APM\ **Tags:** python\ **Created:** [March 11, 2020, 9:26am UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083 "2020-03-11T09:26:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![francois.tarlier](https://avatars.discourse-cdn.com/v4/letter/f/b5ac83/32.png) [@francois.tarlier](https://discuss.elastic.co/u/francois.tarlier)\ **Post date:** [March 11, 2020, 9:26am UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083/1 "2020-03-11T09:26:42Z")
I'm trying to do a simple example in Flask by following the documentation and online tutorials to see how the flask integration works. I managed to have the span and request working, but I have no **metrics** reported in Kibana. also the app.logger doesn't seems to report the logs into Kibana When I start the Flask server I get the following message : `No handlers could be found for logger "elasticapm.metrics"` **Here is my code:** ```auto import logging from flask import Flask from flask import request from flask import render_template import elasticapm from elasticapm.contrib.flask import ElasticAPM from elasticapm.handlers.logging import LoggingHandler DEBUG = True app = Flask( __name__ ) apm = ElasticAPM(app, service_name="flask-app", logging=logging.INFO) @app.route('/') def bar(): """Index.""" try: 1 / 0 except ZeroDivisionError: app.logger.error('I cannot math', exc_info=True) @app.route('/login', methods=['GET', 'POST']) def login(): """Login.""" if request.method == 'POST': return "post method" else: return "get method" @app.route('/api/') def api(entity): """API.""" limit = int(request.args.get("limit", 0)) entities = get_entity(entity, limit=limit) nb = len(entities) app.logger.info("Found {nb} {entity} with limit to {limit}".format( nb=nb, entity=entity, limit=limit)) return render_template('api.html', entity=entity, entities=entities, nb=nb) @elasticapm.capture_span() def get_entity(entity, limit=0): """Call to in house DB.""" entities = db.find(entity, limit=limit ) return entities if __name__ == ' __main__': handler = LoggingHandler(client=apm.client) handler.setLevel(logging.INFO) app.logger.addHandler(handler) app.config['ELASTIC_APM'] = { 'DEBUG': DEBUG } app.run(host="127.0.0.1", port="8080", debug=DEBUG) ``` **Kibana version** : 7.6.0 **Elasticsearch version** : 7.6.0 **APM Server version** : 7.6.0 **APM Agent language and version** : elastic-apm==5.4.3 Flask==1.1.1 **Original install method (e.g. download page, yum, deb, from source, etc.) and version**: docker **Fresh install or upgraded from other version?** local install using docker-compose ---
**Author:** ![basepi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/basepi/32/53056_2.png) [@basepi](https://discuss.elastic.co/u/basepi)\ **Post date:** [March 11, 2020, 7:41pm UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083/2 "2020-03-11T19:41:17Z")
Welcome to the forum, @francois.tarlier! I found one issue in your code. You need to do the `app.config` piece before you set up the `apm` object, or APM is set up without those config values: ```python app = Flask( __name__ ) app.config["ELASTIC_APM"] = {"DEBUG": DEBUG} apm = ElasticAPM(app, service_name="flask-app", logging=logging.INFO) ``` Additionally, did you install `psutil`? You'll need that to get any of the system metrics. I took your code, with the one change I showed above, did ```auto pip install flask 'elastic-apm[flask]' psutil python app.py curl localhost:8080/login ``` And saw both transactions and metrics in my local kibana instance. My guess is that `elasticapm.metrics` is trying to send the following warning to the logs: ```auto Could not register elasticapm.metrics.sets.cpu.CPUMetricSet metricset: psutil not found. Install it to get system and process metrics ``` But it's failing because something is odd in the logging. (Probably related to running it in `docker` -- I didn't tweak the logging at all but I am running it in a local virtualenv.) Keep me posted if that code change and installing `psutil` fix the issue for you! ---
**Author:** ![francois.tarlier](https://avatars.discourse-cdn.com/v4/letter/f/b5ac83/32.png) [@francois.tarlier](https://discuss.elastic.co/u/francois.tarlier)\ **Post date:** [March 13, 2020, 9:06am UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083/3 "2020-03-13T09:06:34Z")
Thank you, I was missing the psutil like you mentioned. I would recommand to make it more abvious in the documentation or maybe as requirement in elasticapm module. It is specified in the middle of the documentation in metrics as : `if you do **not** use Linux, you need to install [`psutil`](https://pypi.org/project/psutil/) for this metric set.` It is also needed for OSX. Thanks a lot for your quick feedback. F. ---
**Author:** ![basepi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/basepi/32/53056_2.png) [@basepi](https://discuss.elastic.co/u/basepi)\ **Post date:** [March 13, 2020, 2:45pm UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083/4 "2020-03-13T14:45:54Z")
Thanks for the feedback! In fact, as a result of my investigation of your issue, I added a troubleshooting doc, which includes the note about `psutil`: [https://github.com/elastic/apm-agent-python/pull/756](https://github.com/elastic/apm-agent-python/pull/756) Interestingly, my coworker pointed out that `psutil` is only required on non-linux systems. (In your case, docker is probably the culprit.) Have a great day! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 3, 2020, 10:45am UTC](https://discuss.elastic.co/t/python-apm-agent-for-flask-doesnt-report-metrics/223083/5 "2020-04-03T10:45:57Z")
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