config_kit

Configuration Kit(config_kit)

Introduction

config_kit is a tool to manage the application configuration using consul as back service as configuration store, and support configuration versioning, rollout or rollback control.

How to Use

To understand config_kit, first we need to understand basic configuration management approaches using in config_kit. Next we will provide quick starting for you to experience config_kit functionalities.

Seven Types of Configuration Management

config_kit provides command line(ck) to init, bootstrap, deploy, rollout, rollback for appication configuration

• init: init is to initialize metadata for specific data center, which will including the informaction of data center name and entitled environment for the data center

ck init -n 'moidc' -e 'Laxino.MO.Staging' -c 'stg0'

• describe: retrieve inforamation about all configuration or app configuration

describe all information of configuration

ck describe

describe one application information of configuration

ck describe --app axle

describe specified version of an application of configuration

ck describe --app axle --version 1.0.0

• get: get is to retrive the full contents of the configuration

get current version full configuration information

ck get

get current version full configuration information and output to yaml format

ck get -o yaml

get current version full configuration of an application

ck get --app axle -o yaml

get specify version configuration of an application

ck get --app axle --version 1.0.0 -o yaml

• bootstrap: bootstrap is to create a application configuration tied specified version, and will not take active after bootstrap.

bootstrap from file

ck bootstrap --from-file file:///config/int0 --app all --version 1.0.0

bootstrap from git

ck bootstrap --from-git ssh://git_repository/config.git --app all --version=1.0.0

• deploy: deploy is not only to creat a application configuration, but also set as default configuration for active after deploy

• rollout: rollout is to activate specified version.

• rollback: TBD

Setup Consul Storage

To setup consul, we using docker to run a testing consul server, if you need a consul server in production, pls using stack file in cluster folder.

docker container run -d --name=consul -p 8400:8400 -p 8500:8500 -p 8600:53/udp consul

You can open urs http://localhost:8500 to access UI of consul

Prepare the configuration data

To create configuration data, pls refere to README in config folder, and two configuration data for axle and infra is placed in same folder as well.

Default Setting of config_kit

In order to simplified process for new user, we have default settings in config_kit to shorten start step for new user.

In config_kit

• default consul server: http://localhost:8500
• default configuration data: ./config (where example configuration is ready for you)

Let's Go

Assume consul container is up and running, so we can use deploy command to deploy the first configuration in config folder

ck bootstrap

Then open http://localhost:8500 to check the configuration data.

How to manage configuration data

Todo

Cli

• provide deployment summary for deploy command;
• provide bootstrp summary for bootstrap command;
• provide rollback summary for rollback command;
• provide rollout summary fro rollout command;
• support --pretty options in get command for output formatting;
• enhance error output for all comamnds;

Configuration

• support change configuration throught environment;

Data Loader

• support load configuration data from git repository;
• support checksum for loaded data;
• join all array elements with comma;

Doc

• provide writing configuration data file guideline;
• complete manage configuration data section;

Manager

• provide API to integrate with d13n, which can get configuration data from application;

Thank you!

Pls let me know if you have any problems.