Helmfig

Are you tired of writing values.yaml for configmap of your project when you are helmifying them? Helmfig is a handy tool that can generate the content of your configmap object and its parameters for values.yaml based on a config example file.

Currently, we just support YAML config structure, but we will support JSON and ENV in the future.

What actually it does

Assume that you have a file named config.example.yaml like the one below. You want to helmify your project, so you need a configmap object file and an appropriate values for that configmap. Helmfig generate them for you.

config.example.yaml

logger:
  level: info
  syslog:
    enabled: false
    server_address: localhost:514
    network: udp
    priority: info
nats_streaming:
  address: "127.0.0.1:4222"
  connect_wait: 1s
  pub_ack_wait: 2s
  max_pub_acks_in_flight: 5
  ping_interval: 2
  ping_max_out: 150
  cluster_id: test-cluster
  client_id: app

Configmap output:

logger:
  level: '{{ logger.level }}'
  syslog:
    enabled: '{{ logger.syslog.enabled }}'
    network: '{{ logger.syslog.network }}'
    priority: '{{ logger.syslog.priority }}'
    server_address: '{{ logger.syslog.serverAddress }}'
nats_streaming:
  address: '{{ natsStreaming.address }}'
  client_id: '{{ natsStreaming.clientId }}'
  cluster_id: '{{ natsStreaming.clusterId }}'
  connect_wait: '{{ natsStreaming.connectWait }}'
  max_pub_acks_in_flight: '{{ natsStreaming.maxPubAcksInFlight }}'
  ping_interval: '{{ natsStreaming.pingInterval }}'
  ping_max_out: '{{ natsStreaming.pingMaxOut }}'
  pub_ack_wait: '{{ natsStreaming.pubAckWait }}'

Values output:

logger:
  level: info
  syslog:
    enabled: false
    network: udp
    priority: info
    serverAddress: localhost:514
natsStreaming:
  address: 127.0.0.1:4222
  clientId: app
  clusterId: test-cluster
  connectWait: 1s
  maxPubAcksInFlight: 5
  pingInterval: 2
  pingMaxOut: 150
  pubAckWait: 2s

How to use it?

Download released binary

1. Go to release page of the repo and download the appropriate released binary with regard to your OS and arch.

2. Put it in one of PATH directories

3. Run it by simply typing helmfig in your desired terminal.

Build from source

1. Install a golang compiler (at least version 1.16).

2. Clone the project and compile it:

git clone https://github.com/snapp-incubator/helmfig.git
cd helmfig
go build .

3. Put your config.example.yaml near the compiled binary and run it via:

./helmfig yaml

4. If everything is OK, two files will be generated: configmap.yaml and values.yaml. You can use them in helm chart of your desired application

License

Apache-2.0 License, see LICENSE.