timings-docker

This repo provides docker-compose support for the node/express based TIMINGS API only! This is not the API itself but merely a collection of scripts and configuration files to run the API in a docker based environment. For details about the API itself, please check out the repo here: https://github.com/godaddy/timings.

Also, see the FAQ section in the Wiki for more help & tips: https://github.com/Verkurkie/timings-docker/wiki/FAQ-page.

IMPORTANT

> IF YOU ARE UPDATING YOUR INSTALLATION OF THIS REPO, PLEASE READ THE UPDATING.md DOCUMENT!!

Usage

Before jumping into the installation & usage of this repo and the associated Docker container, please read the following notes. It is really crucial that you understand Docker and docker-compose, especially when upgrading this repo!!

• When you start the Docker infrastructure for the first time, a number of folders is created for logs and data files:

  [host folder]
    /elasticsearch
      /data
    /kibana
      /data
    /timings
      /logs
  

• As you use the API, elasticsearch data is stored on the local file system of the Docker Host! The data can be found in the ./elasticsearch/data/nodes/ folder

• When you upgrade this repo, there is a possibility that the docker-compose.yml file is pointing at newer versions of Elasticsearch and Kibana

  • ==>> in this scenario, please read the UPDATING.md document!
  • please make sure that you have migrated your elasticsearch data when upgrading to a new MAJOR version of elasticsearch/kibana!

Last but not least, please reference the system requirements to check if your system meets the needs.

Step 1. Clone it

Clone this repo to a folder of your choice:

$ git clone [email protected]/godaddy/timings-docker.git
Cloning into 'timings-docker'...
...
$ cd timings-docker

Step 2. Configure it

It is recommended that you create a custom config file. You can copy the sample config file (./timings-docker/timings/config/sample_default.json) and:

• save it in a location of your choice (example: /etc/timings/timings.json)
• edit the file according to your needs - see also here: https://github.com/godaddy/timings/blob/master/CONFIG.MD

Step 3. Run it

You should now be able to run the environment by running:

$ CONFIGFILE=/etc/timings/timings.json docker-compose up
WARNING: The HOSTNAME variable is not set. Defaulting to a blank string.
Starting elasticsearch ... done
Starting kibana        ... done
Starting timings       ... done
Attaching to elasticsearch, kibana, timings
timings          | [2021-03-01T09:33:45.171Z][info] - timings API - LOGGING - logs files stored in: ["/src/logs"]
timings          | [2021-03-01T09:33:45.175Z][info] - timings API - LOGGING - log level: INFO
timings          | [2021-03-01T09:33:45.514Z][info] - timings API - CONFIG - Using config ["/src/.config.js"]
timings          | [2021-03-01T09:33:45.514Z][info] - timings API - STATUS - Server v1.4.5 is running at http://08ed9a9ac258:80
timings          | [2021-03-01T09:33:45.522Z][info] - Elasticsearch - UTILS - [PORTCHECK] waiting for host [elasticsearch] at port [9200] ...
elasticsearch    | [2021-03-01T09:33:48,685][INFO ][o.e.n.Node               ] [66ca5bd94595] version[7.11.1], pid[7], build[default/docker/ff17057114c2199c9c1bbecc727003a907c0db7a/2021-02-15T13:44:09.394032Z], OS[Linux/4.19.128-microsoft-standard/amd64], JVM[AdoptOpenJDK/OpenJDK 64-Bit Server VM/15.0.1/15.0.1+9]
elasticsearch    | [2021-03-01T09:33:48,690][INFO ][o.e.n.Node               ] [66ca5bd94595] JVM home [/usr/share/elasticsearch/jdk], using bundled JDK [true]
... [more elasticsearch messages]

timings          | [2021-03-01T09:34:04.367Z][info] - Elasticsearch - UTILS - [HEALTHCHECK] status [yellow] of host [elasticsearch] is OK!
timings          | [2021-03-01T09:34:04.378Z][info] - Elasticsearch - UTILS - [INFO] found elastic v7.11.1 ...
timings          | [2021-03-01T09:34:04.426Z][info] - Elasticsearch - UTILS - [UPDATE] API and ELK are up-to-date!

Above example is showing the main log output messages of the [timings] service that you should look for! During the first startup, you should ultimately see a line that says [UPDATE] API and ELK are up-to-date! or [TEMPLATE] created/updated [cicd-perf] in case the API was updated! This confirms that the API waited for Elasticsearch to be healthy and it updated the template for cicd-perf* in Elasticsearch.

$ CONFIGFILE=/etc/timings/timings.json docker-compose up

NOTE: The first time you install this or when you use the pull / --build argument(s), Docker will (re-)build the containers! The output will look different and the entire process will take a bit longer to complete.

You should use CONFIGFILE=/etc/timings/timings.json docker-compose pull && docker-compose up --build every time the timings images is updated. This ensures you're getting the latest container!

Step 4. Check it

After the containers have started, you can test the app by browsing to the following URLs (where hostname is the name of you Docker host system):

Service	Link
timings	http://hostname
elasticsearch	http://hostname:9200
kibana	http://hostname:5601

Other considerations

Depending on your host system, you may need to make some further adjustments or you can consider a few optional settings. Keep reading below.

Update docker-compose file [optional]

Instead of using the CONFIGFILE variable to start docker-compose, you can reference your config file in the docker-compose.yml file:

• Update ./timings-docker/docker-compose.yml and uncomment + edit the volumes section for the timings service to map your config file to the container's /src/config/default.json file:

  volumes
  volumes:
    - "${CONFIGFILE}:/src/config/default.json"   <<-- edit this line
    - ./timings/logs:/timings/logs

If you don't use a custom config file, the API will use default values. Settings such as the ElasticSearch host (ES_HOST), Kibana host (KB_HOST), etc. don't need to be included because they are already defined in the docker-compose yaml file.

Host specific settings

Before you can run the API you may have to make a few modifications to your docker host:

Add user to docker group [Linux only]

You have to add your user account to the docker group and logging out & back in again. If you don't do this, you have to run docker-compose with sudo which is not recommended! You can use the following command:

sudo usermod -aG docker ${USER}

Custom elasticsearch data directory [optional]

This is optional. By defaults, the elasticsearch container will use the timings-docker/elasticsearch/data directory on the docker host to store its data. If you want to use a different location, you can edit the volumes section of the timings-docker/docker-compose.yml file and point to the desired location:

  elasticsearch:
    ...
    volumes:
      - ./elasticsearch/data:/usr/share/elasticsearch/data    <<-- edit this line
    ...

Set permissions for the data & logging directories [Linux only]

You need to set the necessary read/write permissions to the data and logging directories! Depending on how you are running docker-compose, the permissions may look different

In this example, we're setting full permissions on all of the directories:

$ sudo chmod 777 ./elasticsearch/data
$ sudo chmod 777 ./kibana/data
$ sudo chmod 777 ./timings/logs

System requirements

• Linux or Windows based OS with the following pre-requisites:

  • Docker and docker-compose
    • Docker: https://docs.docker.com/engine/installation/
    • Docker-compose: https://docs.docker.com/compose/install/
  • Windows Subsystem for Linux (Windows only)
    • To support the wait-for-it.sh script (until we have a PowerShell equivalent)
    • More info: https://msdn.microsoft.com/en-us/commandline/wsl/install-win10 and https://msdn.microsoft.com/commandline/wsl/install-on-server

• Min. 4GB memory for elasticsearch (8+GB is recommended)

• Storage space for elasticsearch data

  • required amount depends on test frequency. As an indicator, running the API for ~6 mo at GoDaddy with ~40,000 tests/day produced ~170Gb of data.
  • storage can also be mounted remotely (see here)