Argo CD App Deployer

This repository contains some helpers to integrate Argo CD Application updates with your CI system.

mkkubeconfig is a tool to help generate a KUBECONFIG file from a ServiceAccount's credentials.
deploy is a script that will attempt to update the tag for an Application's image.

`mkkubeconfig`

Create a ServiceAccount:

apiVersion: v1
kind: ServiceAccount
metadata:
  name: argocd-app-deployer
  namespace: argocd

Create a Role with minimal privileges:

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: argocd-app-deployer
  namespace: argocd
rules:
- apiGroups:
  - argoproj.io
  resources:
  - applications
  verbs:
  - get
  - update
  - patch

Create a RoleBinding:

apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: argocd-app-deployer
  namespace: argocd
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: argocd-app-deployer
subjects:
- kind: ServiceAccount
  name: argocd-app-deployer
  namespace: argocd

Generate a KUBECONFIG for the new ServiceAccount:

$ KUBECONFIG_BODY=$(docker run --rm -v ~/.kube:/root/.kube:ro codekoala/argocd-app-deployer:v0.0.5 mkkubeconfig argocd argocd-app-deployer | base64 -w 0)

Copy the encoded output and put it into your CI system. It could be as a variable that gets injected into your build environment, which you can then write out and use. For example:
```
$ mkdir -p ~/.kube/
$ echo "${KUBECONFIG_BODY}" | base64 -d > ~/.kube/config
```

`deploy`

Attempt to deploy an update:

$ docker run --rm -e KUBECONFIG_BODY="${KUBECONFIG_BODY}" codekoala/argocd-app-deployer:v0.0.5 deploy my-postgres postgres 11.2-alpine