ELK watcher by Go

This project calls the REST API of Elastic Search, especially the index data, at regular intervals. It may look like the paid features in the ELK stack -- watcher.

go build
chmod +x ./elk-watcher

Export environment variable

Before starting this app, the following env variables need to be set.

export ELASTIC_USERNAME="username"
export ELASTIC_PASSWORD="password"
# URL for ElasticSearch REST API
export ELASTIC_URL="http://elastic_hostname/index_name/_search"
export DINGTALK_TOKEN="access_token"
export DINGTALK_SECRET="dingtalk_secret"
# interval (pattern with `10s`, `1m`, `3h`)
export DURATION="60s"

Run it by this command:

./elk-watcher

Run as container

docker run --name=watcher -itd -e ELASTIC_USERNAME="username" \
  ELASTIC_PASSWORD="password" \
  ELASTIC_URL="http://elastic_hostname/index_name/_search" \
  DINGTALK_TOKEN="access_token" \
  DINGTALK_SECRET="dingtalk_secret"
  DURATION="60s" \
  lawrence2018/watcher:latest

Of course, we can deploy this with Kubernetes.

kubectl apply -f deployment.yml