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Version: 1.27.X

Thanos

Thanos is an opensource Prometheus setup that allows having 2 important features:

  1. high availability on Prometheus (setting more Prometheus replicas)
  2. long term storage capacity relying on an external object storage

Image repository and tag​

  • Thanos components versions: v0.30.2
  • Thanos components image: registry.sighup.io/fury/thanos/thanos:v0.30.2

Requirements​

Setup in Fury Module​

KFD Thanos package has 2 different possible deployment setups thanos-minio using a MinIO instance for storage and thanos-s3 using an S3 bucket as storage. Each one can be configured to proxy a single Prometheus instance or 3 Prometheus instances simultaneously:

thanos-minio 
    single
    triple
thanos-s3 
    single
    triple

Depending on the number of replicas you choose in the Prometheus section, you must use the corresponding Thanos configuration for the Query component:

With MinIO you have an all-in-one solution including storage, instead with the module s3 variant, you can manage the storage on top a bucket. Please take a look at how to modify the objectstore.yml to patch your credentials in the correct way.

# description: config + credentials for access to object storage
secretGenerator:
- name: thanos-objstore-secret
  namespace: monitoring
  files:
    - objstore.yml=objstore.yml

If you want to use another kind of Object Storage than minIO or s3 you can import the s3 module and override the entire configuration, take a look at how to do the changes in the Thanos storage lis page

Deployment​

Before deploying this, please take a look at how to modify Thanos. You can deploy Thanos by running the following command:

kustomize build | kubectl apply -f - --server-side

Accessing Thanos frontend UI​

You can access the Thanos dashboard by port-forwarding the service thanos-query-frontend with:

kubectl port-forward svc/thanos-query-frontend 9090:9090 --namespace monitoring

Now you can go to http://127.0.0.1:9090 on your browser to manage the query frontend.

Even though the port forward is useful for a quick test. It is better to create an ingress for the Thanos Query Frontend. There is no ingress defined by default with the package, you can add one with something like this:

apiVersion: extensions/v1
kind: Ingress
metadata:
    name: thanos
    namespace: monitoring
    annotations:
        forecastle.stakater.com/expose: "true"
        forecastle.stakater.com/icon: "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRQIi0w9WqMmkCcjgC03kxOFhkdeDuV2UIgKo9xfiugGSjRLxstEw"
    labels:
        app: thanos-query-frontend
spec:
    ingressClassName: internal  # if you are not using dual-nginx, adjust accordingly
    rules:
        - host: thanos.example.com
          http:
            paths:
            - path: "/"
                pathType: Prefix
                backend:
                  service:
                    name: thanos-query-frontend
                    port:
                      name: http