k8s-pod-notifier

Notify Pod status to Slack

Requirements

• Kubernetes 1.3 or above
• Slack API (OAuth2) access token
  • Permission scopes channels:read and chat:write:bot are required

Installation

From source

$ go get -d github.com/dtan4/k8s-pod-notifier
$ cd $GOPATH/src/github.com/dtan4/k8s-pod-notifier
$ make deps
$ make install

Run in a Docker container

Docker image is available at quay.io/dtan4/k8s-pod-notifier.

# -t is required to colorize logs
$ docker run \
    --rm \
    -t \
    -v $HOME/.kube/config:/.kube/config \
    quay.io/dtan4/k8s-pod-notifier:latest

Usage

In Kubernetes cluster

Just add --in-cluster flag.

Deployment manifest sample:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: k8s-pod-notifier
spec:
  minReadySeconds: 30
  strategy:
    type: RollingUpdate
  replicas: 1
  template:
    metadata:
      name: k8s-pod-notifier
      labels:
        name: k8s-pod-notifier
        role: daemon
    spec:
      containers:
      - image: quay.io/dtan4/k8s-pod-notifier:latest
        name: k8s-pod-notifier
        env:
        - name: SLACK_API_TOKEN
          valueFrom:
            secretKeyRef:
              name: k8s-pod-notifier
              key: slack-api-token
        - name: SLACK_CHANNEL
          valueFrom:
            secretKeyRef:
              name: k8s-pod-notifier
              key: slack-channel
        command:
          - "/k8s-pod-notifier"
          - "--in-cluster"
          - "--fail"
          - "--labels"
          - "role=job"

Local machine

k8s-pod-notifier uses ~/.kube/config as default. You can specify another path by KUBECONFIG environment variable or --kubeconfig option. --kubeconfig option always overrides KUBECONFIG environment variable.

$ export SLACK_API_TOKEN=xxxxx
$ export SLACK_CHANNEL=notifications
$ KUBECONFIG=/path/to/kubeconfig k8s-pod-notifier
# or
$ k8s-pod-notifier --kubeconfig=/path/to/kubeconfig

Options

Option	Description	Required	Default
--context=CONTEXT	Kubernetes context
--in-cluster	Execute in Kubernetes cluster
--kubeconfig=KUBECONFIG	Path of kubeconfig		~/.kube/config
--labels=LABELS	Label filter query (e.g. app=APP,role=ROLE)
--namespace=NAMESPACE	Kubernetes namespace		All namespaces
--success	Notify success of Pod only
--fail	Notify failure of Pod only
--slack-api-token=SLACK_API_TOKEN	Slack API token	Required, or set SLACK_API_TOKEN env
--slack-channel=SLACK_CHANNEL	Slack channel to post	Required, or set SLACK_CHANNEL env
-h, -help	Print command line usage
-v, -version	Print version

Development

Go 1.7 or above is required. Clone this repository and build using make.

$ go get -d github.com/dtan4/k8s-pod-notifier
$ cd $GOPATH/src/github.com/dtan4/k8s-pod-notifier
$ make

Author

Daisuke Fujita (@dtan4)

License