From 6d6ad68fa3e123d8508ad422f4144abd5a49196d Mon Sep 17 00:00:00 2001
From: Willian Paixao <willian@ufpa.br>
Date: Tue, 9 Apr 2024 12:46:31 +0200
Subject: [PATCH] feat(helm): install loki

---
 .../apps/observability/kustomization.yaml     |   1 +
 .../observability/loki/app/helmrelease.yaml   | 111 ++++++++++++++++++
 .../observability/loki/app/kustomization.yaml |   6 +
 kubernetes/apps/observability/loki/ks.yaml    |  21 ++++
 .../flux/repositories/helm/kustomization.yaml |   2 +-
 .../helm/{openebs.yaml => loki.yaml}          |   4 +-
 6 files changed, 142 insertions(+), 3 deletions(-)
 create mode 100644 kubernetes/apps/observability/loki/app/helmrelease.yaml
 create mode 100644 kubernetes/apps/observability/loki/app/kustomization.yaml
 create mode 100644 kubernetes/apps/observability/loki/ks.yaml
 rename kubernetes/flux/repositories/helm/{openebs.yaml => loki.yaml} (68%)

diff --git a/kubernetes/apps/observability/kustomization.yaml b/kubernetes/apps/observability/kustomization.yaml
index 781bd711e..22664f15c 100644
--- a/kubernetes/apps/observability/kustomization.yaml
+++ b/kubernetes/apps/observability/kustomization.yaml
@@ -4,4 +4,5 @@ kind: Kustomization
 resources:
   - ./namespace.yaml
   - ./kube-prometheus-stack/ks.yaml
+  - ./loki/ks.yaml
   - ./prometheus-blackbox-exporter/ks.yaml
diff --git a/kubernetes/apps/observability/loki/app/helmrelease.yaml b/kubernetes/apps/observability/loki/app/helmrelease.yaml
new file mode 100644
index 000000000..14599d60f
--- /dev/null
+++ b/kubernetes/apps/observability/loki/app/helmrelease.yaml
@@ -0,0 +1,111 @@
+---
+# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/helm.toolkit.fluxcd.io/helmrelease_v2beta2.json
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: &app loki
+  namespace: &namespace observability
+spec:
+  interval: 30m
+  timeout: 15m
+  chart:
+    spec:
+      chart: loki
+      version: 6.0.0
+      sourceRef:
+        kind: HelmRepository
+        name: loki
+        namespace: flux-system
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    cleanupOnFail: true
+    remediation:
+      strategy: rollback
+      retries: 3
+  values:
+    loki:
+      commonConfig:
+        replication_factor: 1
+      schemaConfig:
+        configs:
+          - from: "2020-10-24"
+            store: tsdb
+            object_store: filesystem
+            schema: v13
+            index:
+              prefix: index_
+              period: 24h
+      storage:
+        type: 'filesystem'
+      ingester:
+        chunk_encoding: snappy
+      tracing:
+        enabled: false
+      querier:
+        max_concurrent: 2
+    
+    gateway:
+      ingress:
+        enabled: true
+        hosts:
+          - host: &host loki.${SECRET_DOMAIN}
+            paths:
+              - path: /
+                pathType: Prefix
+        tls:
+          - hosts:
+              - *host
+
+    deploymentMode: SingleBinary
+    singleBinary:
+      replicas: 1
+      resources:
+        limits:
+          cpu: 3
+          memory: 4Gi
+        requests:
+          cpu: 2
+          memory: 2Gi
+      extraEnv:
+        - name: GOMEMLIMIT
+          value: 3750MiB
+    
+    memberlist:
+      service:
+        publishNotReadyAddresses: true
+
+    chunksCache:
+      writebackSizeLimit: 10MB
+    
+    minio:
+      enabled: false
+    
+    backend:
+      replicas: 0
+    read:
+      replicas: 0
+    write:
+      replicas: 0
+    ingester:
+      replicas: 0
+    querier:
+      replicas: 0
+    queryFrontend:
+      replicas: 0
+    queryScheduler:
+      replicas: 0
+    distributor:
+      replicas: 0
+    compactor:
+      replicas: 0
+    indexGateway:
+      replicas: 0
+    bloomCompactor:
+      replicas: 0
+    chunksCache:
+      enabled: false
+    bloomGateway:
+      replicas: 0
+    
diff --git a/kubernetes/apps/observability/loki/app/kustomization.yaml b/kubernetes/apps/observability/loki/app/kustomization.yaml
new file mode 100644
index 000000000..17cbc72b2
--- /dev/null
+++ b/kubernetes/apps/observability/loki/app/kustomization.yaml
@@ -0,0 +1,6 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./helmrelease.yaml
diff --git a/kubernetes/apps/observability/loki/ks.yaml b/kubernetes/apps/observability/loki/ks.yaml
new file mode 100644
index 000000000..8cefe44c9
--- /dev/null
+++ b/kubernetes/apps/observability/loki/ks.yaml
@@ -0,0 +1,21 @@
+---
+# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/kustomize.toolkit.fluxcd.io/kustomization_v1.json
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: &app loki
+  namespace: flux-system
+spec:
+  targetNamespace: observability
+  commonMetadata:
+    labels:
+      app.kubernetes.io/name: *app
+  path: ./kubernetes/apps/observability/loki/app
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: home-kubernetes
+  wait: false
+  interval: 30m
+  retryInterval: 1m
+  timeout: 15m
diff --git a/kubernetes/flux/repositories/helm/kustomization.yaml b/kubernetes/flux/repositories/helm/kustomization.yaml
index 56649f348..b8e251713 100644
--- a/kubernetes/flux/repositories/helm/kustomization.yaml
+++ b/kubernetes/flux/repositories/helm/kustomization.yaml
@@ -8,8 +8,8 @@ resources:
   - ./ingress-nginx.yaml
   - ./jetstack.yaml
   - ./k8s-gateway.yaml
+  - ./loki.yaml
   - ./longhorn.yaml
   - ./metrics-server.yaml
-  - ./openebs.yaml
   - ./prometheus-community-charts.yaml
   - ./stakater.yaml
diff --git a/kubernetes/flux/repositories/helm/openebs.yaml b/kubernetes/flux/repositories/helm/loki.yaml
similarity index 68%
rename from kubernetes/flux/repositories/helm/openebs.yaml
rename to kubernetes/flux/repositories/helm/loki.yaml
index d0f105e64..f3699df99 100644
--- a/kubernetes/flux/repositories/helm/openebs.yaml
+++ b/kubernetes/flux/repositories/helm/loki.yaml
@@ -2,8 +2,8 @@
 apiVersion: source.toolkit.fluxcd.io/v1beta2
 kind: HelmRepository
 metadata:
-  name: openebs
+  name: loki
   namespace: flux-system
 spec:
   interval: 1h
-  url: https://openebs.github.io/charts
+  url: https://grafana.github.io/helm-charts