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MICRO.MD

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Installation

####Note One can use the installer here to install all the dependencies together with the micro-service by configuring using the provided installer links.

Pre-requisites

  1. A cockroachdb instance for persistance. A systemd installer can be found here: https://github.com/tomogoma/cockroach-installer
  2. consul for service discovery. A systemd installer can be found here: https://github.com/tomogoma/consul-installer
  3. micro as a gateway and load balancer. A systemd installer can be found here: https://github.com/tomogoma/micro-installer

Install/Uninstall (Systemd only)

The app can either be installed or run directly.

  1. install 
    make install
  2. uninstall 
    make uninstall

Configuration and deployment

Configuring the service

Edit the configuration file. It is located at /etc/<name>/<name><version>.conf.yml after installation, and is documented for required values.

run the app with --help flag for options on custom configuration file and other options.

Running the Micro-Service

This section will be managed by SystemD if the respective installers were used.

  1. Make sure CockroachDB is running

    • Lack or misconfiguration of this will not stop the micro-service from starting, but requests will yield internal server errors until a connection to the db is established.

  2. Start consul

  3. Recommended: Start micro api with the proxy handler for access to the http API.

    micro api --handler=proxy

    More here: https://github.com/micro/examples/tree/master/greeter/api/rest

    You can set the systemd micro binary to use the proxy handler if installed using the systemd installer by following these steps:

    1. Open the unit file using your editor of choice 
      nano /etc/systemd/system/microapi.service
      and append --handler=proxy to the ExecStart=...micro api entry to end up with something like: 
      ExecStart=/usr/local/bin/micro api --handler=proxy
    2. Reload the SystemD daemon 
      systemctl daemon-reload
    3. Restart micro api 
      systemctl restart microapi

  4. Start the micro-service using one of the following methods:

    1. Using systemd after installation: 
      sudo systemctl start <name><version>
    2. Running directly from the repo folder 
      cd bin
./app
    3. Using the go toolchain e.g. 
      go build
      or 
      go install
      ...then executing the binary

Accessing the Services

The API docs for service access can be accessed on your browser:

  1. Via micro api with proxy handler

    http://localhost:8082/<version>/<name>/docs

    NOTE The app has to be running for this option to work.

  2. Static htm site in install/docs.