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A webthings-compliant network measurement tool from M-Lab.

Project description


Murakami is a tool for creating an automated internet measurement service, running in a Docker container. A Murakami measurement container can be configured to automatically run supported tests four times a day using a randomized schedule, and export each test result to a local storage device, to one or more remote servers via SCP, or to a Google Cloud Storage bucket. Results are saved as individual files in JSON new line format (.jsonl).

Supported Measurement Tests

Murakami Deployment Scenarios

Murakami supports three types of container deployment scenarios on supported systems:

Supported Operating Systems

Murakami supports Linux operating systems like Ubuntu, Debian, etc. Windows is not supported. Mac OS is supportable as a standalone device, but is not completely compatible with the Webthings interface. Balena cloud has not beed tested on Mac OS.

TO DO: test deployment on MacOS

Murakami Configurations and Customization

A Murkami container can be configured flexibly depending on the deployment scenario. If you simply run a Murakami container using M-Lab's pre-built images on Dockerhub, by default all tests are configured to run four times daily at randomized intervals, but no data exporters enabled. This section focuses on which options can be configured using the file murakami.toml OR using environment variables. Examples are provided in later sections of this document.

The Murakami container can be customized using:

  • environment variables on the command line when running docker (Standalone, Local Managed)
  • environment variables in a file, passed on the command line when running docker (Standalone, Local Managed)
  • customizing the murakami.toml configuration file (Standalone, Local Managed, Balena Cloud)
  • environment variables in your Balena Cloud project, or per device (Balena Cloud)

The table below summarizes the options you can configure in murakami.toml and how to format the options as command line variables at the command line.

murakami.toml corresponding environment variable options/examples function
port = 80 MURAKAMI_SETTINGS_PORT 80, 8080 Sets the web port used by the Murakami WebThing code
loglevel = "DEBUG" MURAKAMI_SETTINGS_LOGLEVEL DEBUG, ?, ? Sets the log level for the Murakami service
immediate = 1 MURAKAMI_SETTINGS_IMMEDIATE 0, 1, true, false If set to 1 or true, instructs the container to run the first set of tests when it starts
location = "Baltimore" MURAKAMI_SETTINGS_LOCATION any string Optional - If set, value is used in exported test file names.
network_type = "home" MURAKAMI_SETTINGS_NETWORK_TYPE any string Optional - If set, value is used in exported test file names
connection_type = "wired" MURAKAMI_SETTINGS_CONNECTION_TYPE any string Optional - If set, value is used in exported test file names
[exporters] The 'exporters' configuration sections OR environment variables define where test data should be saved or exported. For each exporter all variables listed must be defined.
[exporters.local] The 'local' exporter defines where on the system's local disk to save test results.
enabled = true MURAKAMI_EXPORTERS_LOCAL_ENABLED 0, 1, true, false
path = "/data/" MURAKAMI_EXPORTERS_LOCAL_PATH Any system path available to the Murakami container service may be used to save local data.
[exporters.scp] The 'scp' exporter defines a remote server where data should be copied. The server must be configured to allow secure copy via SSH using a private key file.
enabled = true MURAKAMI_EXPORTERS_SCP_ENABLED 0, 1, true, false
target = "" MURAKAMI_EXPORTERS_SCP_TARGET hostname:path/ Defines the remote server and system path where the SCP exporter should save data. A server's IP address is also supported.
port = 22 MURAKAMI_EXPORTERS_SCP_PORT 22, alternate SCP port used by the remote server Defines the port used by the remote server for the server's SCP/SSH service.
username = "murakami" MURAKAMI_EXPORTERS_SCP_USERNAME remote server username Defines the username to be used by the SCP exporter.
private_key = "/murakami/keys/id_rsa_murakami" MURAKAMI_EXPORTERS_SCP_PRIVATE_KEY The system path within the Murakami container where the SCP user's private SSH key is located.
[exporters.gcs] The 'gcs' exporter defines a storage bucket in a Google Cloud Storage project where test data should be saved.
enabled = true MURAKAMI_EXPORTERS_GCS_ENABLED 0, 1, true, false
target = "gs://murakami-gcs-test/" MURAKAMI_EXPORTERS_GCS_TARGET gs://bucketname Defines the GCS storage bucket name where data should be stored.
service_account = "" MURAKAMI_EXPORTERS_GCS_SERVICE_ACCOUNT The name of the GCS service account which has access to write data to the GCS storage bucket.
key = "/murakami/keys/murakami-gcs-serviceaccount.json" MURAKAMI_EXPORTERS_GCS_KEY The system path within the Murakami container where the GCS service account's JSON keyfile is located.

Multiple exporters of any type are supported as well. For example if you wanted to define two different SCP servers or GCS storage buckets where data should be exported, the config file exporters section might look like this:


  type = "gcs"
  enabled = true
  target = "gs://murakami-storage-bucket-archive/"
  service_account = ""
  key = "/murakami/keys/murakami-gcs-serviceaccount.json"

  type = "gcs"
  enabled = true
  target = "gs://murakami-storage-bucket-access/"
  service_account = ""
  key = "/murakami/keys/murakami-gcs-serviceaccount.json"

OR as environment variables:

MURAKAMI_EXPORTERS_GCS1_TARGET = "gs://murakami-storage-bucket-archive/"
MURAKAMI_EXPORTERS_GCS1_KEY = "/murakami/keys/murakami-gcs-serviceaccount.json"

MURAKAMI_EXPORTERS_GCS2_TARGET = "gs://murakami-storage-bucket-access/"
MURAKAMI_EXPORTERS_GCS2_KEY = "/murakami/keys/murakami-gcs-serviceaccount.json"

M-Lab Supported Dockerhub Images and Tags

TO DO Describe how we structure tags for different system architectures here.

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