microns-nda-access

This guide will walk you through setting up the database container and the access methods for the microns_phase3_nda data.

The data and files for these can be found in the microns-explorer here.

or

you can download the container image tar file using the aws cli tool

aws s3 cp s3://bossdb-open-data/iarpa_microns/minnie/functional_data/two_photon_processed_data_and_metadata/database_v4/functional_data_database_container_image_v4.tar . --no-sign-request

Prerequisites

• ~117 GB of free disk space (around double that, ~222 GB, to load the image from the tar archive the first time)
• Docker
• docker-compose

Setup

This section comes in two parts, the first is the database containing the microns-phase3-nda schema and the second is for the container to access that data with DataJoint in a Jupyter notebook server that will come with tutorials or with the mysql-client.

If you know what you're doing and wish to handle importing the SQL file into an existing database yourself you can skip this next Database section and go straight to the Access section.

Database

The docker image must first be downloaded from the microns-explorer (in a tar archive format, link is at the top). Save this to an accessible location.

In the location where you've stored the downloaded image archive you then will load the image to your local filesystem:

docker load < functional_data_database_container_image_v4.tar

OR

docker load --input functional_data_database_container_image_v4.tar

To start the database you can either Docker or docker-compose:

The data is this database, started with both Docker or docker-compose, is not persistent and changes will be lost when exiting the container.

docker-compose

This would be the preferred method for starting the service as it is more fully configured.

docker-compose up -d database

Docker

Running the container without docker-compose is also an option.

docker run --network="host" --detach microns-phase3-nda-database:latest

Access

The data can be accessed in two ways, either with the mysql-client or through DataJoint in a Jupyter notebook service.

The default user and password for the database are:

username: root
password: microns123

Jupyter Notebook (DataJoint)

You can clone this access repository and build it yourself with Docker and docker-compose. Clone the repository at https://github.com/cajal/microns_phase3_nda.

Using the docker-compose you can start the service with:

docker-compose up -d notebook

which can then be accessed at http://localhost:8888/tree (this uses the default port of 8888).

http://localhost:8888 will send to Jupyter Lab, but the plots/graphics might not all work out-of-the-box without enabling jupyter lab extensions.

The database host will default to http://localhost:3306, or from the notebook container it can be accessed via the database link.

An external, persistent workspace can be mounted to the internal workspace folder by settings the EXTERNAL_NOTEBOOKS env variable to a folder of choice.

By default the notebooks will connect with the database using the environment variable defaults set in .env, so you should be able to access the data and python modules like below with the basic setup in these instructions:

import datajoint as dj

from phase3 import nda, func, utils

However, if it's wanted to manually set the connection credentials and/or host in a notebook, below is an example of that:

import datajoint as dj

dj.config['database.host'] = 'database'
dj.config['database.user'] = 'root'
df.config['database.password'] = 'microns123'

from phase3 import nda, func, utils

The pre-built image of the access container, microns-phase3-nda-notebook, can be downloaded from the microns-explorer linked above and loaded as a docker image the same way as the database archive above instead of building it yourself.

docker load --input functional_data_notebook_container_image_v4.tar

mysql-client

From the local machine you can access it this way

mysql -h 127.0.0.1 -u root -p

which will then prompt for the password (the default from above is microns123) and will open an interactive mysql terminal.

.env file

This docker-compose file is optimized to get a single machine up and running quickly with the database and notebook server. However, you might want to run a server and let many other clients connect to it, rather than having all the clients run their own database.

If so, you only need to run the notebook portion of the docker-compose file, but then you must modify the existing .env file to point to the host of an working database. To do so you need to modify the DJ_HOST variable of the .env file provided.

replacing the "<hostname>" with the hostname of the machine hosting the database (can use 127.0.1.1 if the notebook service has network_mode: 'host' enabled, but otherwise must use the network ip of the computer hosting the database container).

You can also replace the ./notebooks reference to a folder of your choice.

The links section of the notebook service in docker-compose.yml will also need to be commented out or it'll expect the database container image to be present.

Known Issues

• For Windows and Mac (where you have to allocate memory ahead of time for Docker) you might need to allocate 8-12 GB to Docker to ensure you aren't running into the upper limits of the default allocated memory limits. Otherwise you might run into a "Lost Connection to MYSQL database" exception, which can be temporarily fixed by restarting the notebook kernel.