Quickstart Guide for Logstash not working

[lost-carrier]

Bug Report

What did you do?
Tried to setup Logstash according to Quickstart guide.

What did you expect to see?
Logstash up and running

What did you see instead? Under which circumstances?

Environment

• ECK version:

  2.11.1

• Kubernetes information:

  • K0S On premise

$ kubectl version
Client Version: v1.28.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.29.1+k0s

On https://www.elastic.co/guide/en/cloud-on-k8s/2.11/k8s-logstash-quickstart.html I copy-pasted the given example at the top...

cat <<EOF | kubectl apply -f -
apiVersion: logstash.k8s.elastic.co/v1alpha1
kind: Logstash
metadata:
  name: quickstart
spec:
[...]
  pipelines:
    - pipeline.id: main
      config.string: |
        input {
          beats {
            port => 5044
          }
        }
        output {
          elasticsearch {
            hosts => [ "${QS_ES_HOSTS}" ]
            user => "${QS_ES_USER}"
            password => "${QS_ES_PASSWORD}"
            ssl_certificate_authorities => "${QS_ES_SSL_CERTIFICATE_AUTHORITY}"
          }
        }
  services:
[...]

...and found the ${...} variables not getting filled once on Kubernetes.

When passed via shell (cat <<EOF | kubectl apply -f -...) instead of a file, those will need to be escaped!

            hosts => [ "\${QS_ES_HOSTS}" ]
            user => "\${QS_ES_USER}"
            password => "\${QS_ES_PASSWORD}"
            ssl_certificate_authorities => "\${QS_ES_SSL_CERTIFICATE_AUTHORITY}"

Not a huge issue, but keeps beginners (main quickstart audience, I guess) struggling...

[thbkrkr]

Thanks for reporting this.