How to deploy Sentry on a Kubernetes cluster with an external custom ingress

Context and reasoning

Sentry can be installed on a Kubernetes cluster with the help of the official Sentry Helm chart. Here's how.

Pre-requisites

• A working Kubernetes installation and a distributes block storage for Kubernetes (I am using Longhorn on Rancher)


• A working helm tooling

Custom ingress

I could not make the included ingress configuration work. Here's a custom ingress that targets the -sentry-web service to the outside world.

apiVersion: networking.k8s.io/v1

kind: Ingress

metadata:

  name: "{{ .Release.Name }}-sentry"

  labels:

    {{- include "chart.labels" . | nindent 4 }}

  annotations:

    {{- include "ingress.annotations" . | nindent 4 }}  

spec:

  tls:

  - hosts:  

    - sentry.mywebsite.dev  

    secretName: "sentry.mywebsite.dev-tls"

  rules:

  - host: sentry.mywebsite.dev

    http:

      paths:

      - path: /

        pathType: Prefix

        backend:

          service:

            name: "{{ .Release.Name }}-sentry-web"

            port: 

              number: 9000

Install sentry

These are the helm chart values needed to kickstart the sentry installation:

  kafka:

    enabled: true

  user:

    create: true

    email: <REDACTED>

    password: <REDACTED>

  asHook: true

  sentry:

    singleOrganization: false

    worker:

      replicas: 2  

  auth:

    register: false

  hooks:

    activeDeadlineSeconds: 6500

  ingress:

    enabled: false  

  nginx:

    enabled: false

  clickhouse:

    enabled: true

    clickhouse:

      replicas: "1"  

  postgresql:

    enabled: true  

Bonus: use sentry in a helm chart

Most of the examples in this tutorial were made for a custom tooling chart that includes sentry. Here's the sentry version and the repository used:

...

- name: sentry

    alias: sentry

    version: 23.x

    repository: https://sentry-kubernetes.github.io/charts

    condition: sentry.enabled

...

Voilà! You have a fully working Sentry installation.

Consumption

Here's a quick Loki view at how much Sentry consumes of my cluster's resource with no app being monitored.

I will not provide the exact details of every measurement as the cluster's name is redacted, but as you can see, Sentry taxes a heavy toll on the cluster's resources. At rest it takes up to 13Gb of RAM!

Inspirations and references

• https://raslasarslas.medium.com/how-to-deploy-sentry-on-a-kubernetes-cluster-using-helm-600db31d4486