Troubleshooting

This page contains some advice about errors and problems commonly encountered during the development of Meetup Data Scraper.

max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

When using docker on some machines, you will need to manually extend the max virtual memory. For CentOS & Ubuntu use:

$ sudo sysctl -w vm.max_map_count=262144

Or add it permanently use:

$ echo "vm.max_map_count=262144" | sudo tee -a /etc/sysctl.conf
$ sudo reboot

For more detils go to -> https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html

Build faild -> out of memory

Building need quit a lot of RAM, if container like elasticsearch run in background you can ran out of memory. So you need to stop all all containers.:

$ docker-compose -f production.yml stop

Error when starting container under Windows

ERROR: for flask-meetup-data-scraper_flask_1 Cannot start service flask: error while creating mount source path /host_mnt/c/Users/.../dev/flask-meetup-data-scraper: mkdir /host_mnt/c: file exists

When the error comes, in most cases is it enought to just delete all unused container.

Delte unused docker containers