monokube

Monorepo deployment management

Works with lerna, yarn, and stand-alone monorepos

$ monokube --image-root stevelacy

building 1 package(s)
Step 1/8 : FROM golang:1.14.11-alpine3.11 as build_image
...
 ---> 18d162cff2a9
Successfully tagged stevelacy/example-1:1.2.3-d80f667
built image: stevelacy/example-1:1.2.3-d80f667
The push refers to repository [docker.io/stevelacy/example-1]
...
running deployments
deployment.apps/example-1 configured
service/example-1-staged unchanged
Waiting for deployment "example-1" rollout to finish: 1 out of 3 new replicas have been updated...
Waiting for deployment "example-1" rollout to finish: 2 out of 3 new replicas have been updated...
Waiting for deployment "example-1" rollout to finish: 1 old replicas are pending termination...
deployment "example-1" successfully rolled out
running post-deployment tasks
service/example-1 unchanged
ingress.extensions/example-1 configured
deployment "example-1" successfully rolled out
all done

All together:

monokube \
	--image-root stevelacy \
	--docker-args="--build-arg PACKAGE={{ .Name }}" \
	--cluster-name $CLUSTER_NAME \
	--only-packages example-1 \
	--diff "0132547" \
	--path ./packages \
	--skip-packages example-1 \
	--command post-deploy

Installing

Download the latest linux-amd64.tar.gz or view the releases list here

tar -xf monokube-linux-amd64.tar.gz
chmod +x monokube
./monokube

To install it globally to your usr/bin:

sudo mv monokube /usr/local/bin

Arguments

Image Root

--image-root String required

This sets the root of a docker image.

Example:

--image-root stevelacy becomes stevelacy/package
--image-root gcr.io/project becomes gcr.io/project/package

Command

--command String optional pre-build | build | pre-deploy | deploy | post-deploy

If this flag is not provided, all tasks will be run in order: pre-build build pre-deploy deploy post-deploy

If the flag is provided only that task will be run

Note for all .sh scripts: The env is modified to include:

• PACKAGE="package-name"
• IMAGE_ROOT="--image-root || imageRoot"

pre-build

applies all kubernetes pre-build manifests and runs all pre-build.sh scripts Both of these files are either applied or run, yaml is applied before sh:

• pre-build.yaml
• pre-build.sh

build

builds all docker images

pre-deploy

applies all kubernetes pre-deploy manifests and runs all pre-deploy.sh scripts Both of these files are either applied or run, yaml is applied before sh:

• pre-deploy.yaml
• pre-deploy.sh

deploy

applies all kubernetes manifests

post-deploy

applies all kubernetes post-deploy manifests and runs all post-deploy.sh scripts Both of these files are either applied or run, yaml is applied before sh:

• post-deploy.yaml
• post-deploy.sh

Path

--path String optional Default: packages

monokube looks for packages in the path provided or in the packages key of a lerna.json file.

Dry Run

--dry-run Bool optional

This will build all docker images and run a deployment with --dry-run set. It does not push the images.

Output

--output (-o) String optional yaml | json

Docker Args

--docker-args String optional

This is passed into the docker build command directly.

Example:

--docker-args="--build-arg PACKAGE={{ .Name }}"
--docker-args="--compress --memory 512"

Cluster Name

--cluster-name String optional

If provided only the packages with the --cluster-name in their kube/deploy.yaml will be deployed

--cluster-name dev

./packages/example-1/kube/deploy.yaml

{
	"clusters": [ "dev" ]
}

Diff

--diff String optional

Deploys a package only when there are changes between the current repo HEAD and the provided git commit

Skip Packages

--skip-packages String optional

Skip building or deploying provided packages

--skip-packages example-1 example-2

Only Packages

--only-packages String optional

Only build or deploy provided packages

--only-packages example-1 example-2

Templating

deployment.yaml manifest in the package/kube/ folder is templated with the provided arguments and the ENV

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Name }}
  namespace: {{ .Env.NAMESPACE }}
  labels:
    app: {{ .Name }}
    version: {{ .Version }}

Default values provided:

Name:     package folder name
Image:    built docker image
Version:  `version` field from `package/package.json`
Env:      key/value map of the current ENV