git-to-k8s

git-to-k8s

Small tool to automate the git to url flow on k8s

Installation

npm install -g git-to-k8s

Get Started

Dependencies

• helm initialized in Kubernetes cluster
• docker available and logged in already to registry
• git available

Steps for a normal project:

• commit project code to git repo
• included deployment attributes and charts in package.json
• use custom tool clone the repo, build images and push to container registry
• launch deployment with helm on k8s (helm install or helm upgrade)

Sample package.json:

{
  "deploy": {
    "registry": "(optional, default registry for images)",
    "images": [
      {
        "prepare": "npm build (optional)",
        "dockerfile": "(optional, default: Dockerfile)",
        "name": "app1",
        "tag": "0.1.1",
        "path": "(optional, default: .)",
        "registry": "(optional, registry for images)"
      }
    ],
    "charts": [
      {
        "path": "charts (optional, default: charts)",
        "values": "values.prod.yaml",
        "release": "px.app1"
      }
    ]
  }
}

Commands

$ npm i -g git-to-k8s

$ git-to-k8s --help
Usage: git-to-k8s [--dry] [-b branch] [--purge] repo_url

$ git-to-k8s https://github.com/devfans/git-to-k8s 
 Checking dependencies... 
 Target git remote url: https://github.com/devfans/git-to-k8s 
 Total 4 steps to run 
 Step: 1 / 4 - Clone repo to local temp work directory 
 - shell: mkdir -p /var/tmp/git-to-k8s  
 - shell: cd /var/tmp/git-to-k8s  
 - shell: rm -rf git-to-k8s  
 - shell: git clone --depth=1 https://github.com/devfans/git-to-k8s /var/tmp/git-to-k8s/git-to-k8s  
Cloning into '/var/tmp/git-to-k8s/git-to-k8s'...
 - shell: cd git-to-k8s  
 Step: 2 / 4 - build docker images and push to registry 
 - shell: docker build -t devfans/test:0.0.1 -f sample/Dockerfile sample  
Sending build context to Docker daemon  18.43kB
Step 1/4 : FROM node:alpine
 ---> cc3ade82a1f2
Step 2/4 : COPY package.json package.json
 ---> Using cache
 ---> 0cec40705c46
Step 3/4 : RUN npm install --production
 ---> Using cache
 ---> 4171db2c8f89
Step 4/4 : CMD npm start
 ---> Using cache
 ---> 1c8b6cab22ae
Successfully built 1c8b6cab22ae
Successfully tagged devfans/test:0.0.1
 - shell: docker push devfans/test:0.0.1  
The push refers to repository [docker.io/devfans/test]
c7762379164b: Preparing
6cfb3c56ee53: Preparing
1fe401b6b7c6: Preparing
b15aad9c911d: Preparing
2aebd096e0e2: Preparing
c7762379164b: Layer already exists
6cfb3c56ee53: Layer already exists
1fe401b6b7c6: Layer already exists
b15aad9c911d: Layer already exists
2aebd096e0e2: Layer already exists
0.0.1: digest: sha256:1375e4af0340bac927b89481b236ca128a8c600ff3f2e6a7f52413ab5f954757 size: 1369
 Step: 3 / 4 - deploy charts 
 - shell: helm install --name test-git-to-k8s -f sample/charts/test/values.yaml ./sample/charts/test  
NAME:   test-git-to-k8s
LAST DEPLOYED: Thu Dec 27 07:53:31 2018
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1beta1/Deployment
NAME             AGE
test-git-to-k8s  0s

==> v1/Pod(related)

NAME                              READY  STATUS   RESTARTS  AGE
test-git-to-k8s-5fd6576659-9cxzl  0/1    Pending  0         0s

==> v1/Service

NAME             AGE
test-git-to-k8s  0s


 Step: 4 / 4 - Clean up 
 - shell: rm -rf /var/tmp/git-to-k8s