sltd

Tag ELB from service label in kubernetes cluster for Datadog monitoring. Service Label to Tag by Daemon = sltd

• kube_namespace filter in Metrics Explorer

• Kubernetes with ELB requests and status in Dashboard

• Dashboard with 2XX / request_count

"q": "100 * sum:aws.elb.httpcode_backend_2xx{$pod,$replication_controller,$namespace,$cluster,$scope,$kube_name,$kube_deployment}.as_count() / sum:aws.elb.request_count{$pod,$replication_controller,$namespace,$cluster,$scope,$kube_name,$kube_deployment}.as_count()"

Table of Contents

• sltd
  • Table of Contents
  • Requirements
  • Installation
    • Using Homebrew (OS X only)
    • Precompiled binary
    • From source
    • Run in a Docker container
  • Usage
    • kubeconfig file
    • Options
  • Development
  • Deployment Guide
    • Kubernetes
  • Author
  • License

Created by gh-md-toc

Requirements

• Kubernetes 1.3 or later
• AWS Credentials keys (need DescribeTags, AddTags, RemoveTags)

Installation

Using Homebrew (OS X only)

Formula is available at koudaiii/homebrew-tools.

$ brew tap koudaiii/tools
$ brew install sltd

Precompiled binary

Precompiled binaries for Windows, OS X, Linux are available at Releases.

From source

$ go get -d github.com/koudaiii/sltd
$ cd $GOPATH/src/github.com/koudaiii/sltd
$ make deps
$ make install

Run in a Docker container

docker image is available at quay.io/koudaiii/sltd.

# -t is required to colorize logs
$ docker run \
    --rm \
    -t \
    -e AWS_ACCESS_KEY_ID="XXXXXXX" \
    -e AWS_SECRET_ACCESS_KEY="XXXX" \
    -e AWS_DEFAULT_REGION="ap-northeast-1" \
    -e AWS_REGION="ap-northeast-1" \
    -v $HOME/.kube/config:/.kube/config \
    quay.io/koudaiii/sltd:latest \
    --in-cluster=false

Usage

• sltd make tag ELB from labels in kubernetes cluster.

  • cluster name is kubernetescluster key
  • namespace is kube_namespace key
  • service name is kube_name key

• --onetime option

$ sltd --onetime

• --sync-interval option

$ sltd  --sync-interval=10s

kubeconfig file

if sltd uses out of cluster, ~/.kube/config as default.

Options

Option	Description	Required	Default
--onetime=bool	run one time and exit.	optional	false
--in-cluster=bool	if sltd uses out of cluster,need --in-cluster=false	optional	true
--sync-interval=string	the time duration between template processing.	optional	60s
-h, -help	Print command line usage
-v, -version	Print version

Development

Clone this repository and build using make.

$ go get -d github.com/koudaiii/sltd
$ cd $GOPATH/src/github.com/koudaiii/sltd
$ make

Deployment Guide

Kubernetes

      containers:
      - image: "quay.io/koudaiii/sltd:latest"
        name: sltd
          resources:
            requests:
              cpu: 100m
              memory: 30Mi
          command:
            - "/sltd"
          args:
            - "--sync-interval=600s"
        env:
        - name: AWS_DEFAULT_REGION
          value: "ap-northeast-1"
        - name: AWS_REGION
          value: "ap-northeast-1"
        - name: AWS_ACCESS_KEY_ID
          valueFrom:
            secretKeyRef:
              name: dotenv
              key: aws-access-key-id
        - name: AWS_SECRET_ACCESS_KEY
          valueFrom:
            secretKeyRef:
              name: dotenv
              key: aws-secret-access-key

Author

@koudaiii

License