add loki in helm and docker-compose (#290)

Signed-off-by: akihikokuroda <akihikokuroda2020@gmail.com>

docker-compose.yml

@@ -53,5 +53,27 @@ services:
     image: prom/prometheus:v2.42.0
     ports:
       - 9000:9090
+  loki:
+    image: grafana/loki:2.7.4
+    ports:
+      - "3100:3100"
+    command: -config.file=/etc/loki/local-config.yaml
+    networks:
+      - safe-tier
+
+  promtail:
+    image: grafana/promtail:2.7.4
+    volumes:
+      - /var/log:/var/log
+    command: -config.file=/etc/promtail/config.yml
+    networks:
+      - safe-tier
+
+  grafana:
+    image: grafana/grafana:latest
+    ports:
+      - "3000:3000"
+    networks:
+      - safe-tier
 networks:
   safe-tier:

infrastructure/helm/quantumserverless/Chart.lock

@@ -20,8 +20,14 @@ dependencies:
 - name: keycloak
   repository: https://charts.bitnami.com/bitnami
   version: 13.3.0
+- name: repository
+  repository: ""
+  version: 0.1.0
 - name: prometheus
   repository: https://prometheus-community.github.io/helm-charts
   version: 19.7.2
-digest: sha256:61b4adc88d3a07f0ed0b669cdcaf76de28f0ceb3af01905eebb20bc100b81215
-generated: "2023-03-14T15:46:28.318204316-04:00"
+- name: loki
+  repository: https://grafana.github.io/helm-charts
+  version: 4.8.0
+digest: sha256:996849006aacd6baed57c17db52ebeff1ff3a4af4322e09e52c2281724bb50c6
+generated: "2023-03-16T14:30:49.858207-04:00"

infrastructure/helm/quantumserverless/Chart.yaml

@@ -42,3 +42,8 @@ dependencies:
     condition: prometheusEnable
     version: 19.7.2
     repository: https://prometheus-community.github.io/helm-charts
+  - name: loki
+    condition: lokiEnable
+    version: 4.8.0
+    repository: https://grafana.github.io/helm-charts
+

infrastructure/helm/quantumserverless/README.md

@@ -8,6 +8,7 @@ Main configuration to setup your k8s cluster and the services that this project
 helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo add kuberay https://ray-project.github.io/kuberay-helm
 helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm repo add grafana https://grafana.github.io/helm-charts
 ```
 
 ```shell
@@ -123,6 +124,12 @@ For our Ray Charts dependencies we are using the configuration created by the Ra
 
 For our Prometheus dependency we are using the charts managed by the Prometheus community. To simplify the configuration we offered you with a straigh-forward initial parameters setup. But if you are interested in more complex configurations you have access to all the parameters in the chart's [values.yaml](https://github.com/prometheus-community/helm-charts/blob/main/charts/prometheus/values.yaml).
 
+**loki**
+
+- For our loki charts dependencies, we are using the single binary configuration created by Grafana project. To simplify the configuration we offered you with a straigh-forward initial parameters setup.
+But if you are interested in more complex configurations, you have access to all the parameters documented [here](https://grafana.com/docs/loki/next/installation/helm/) and source code of the helm charts are
+[here](https://github.com/grafana/loki/tree/main/production/helm/loki).
+
 ## Usage
 
 - Ray Api Server access needs the access token issued by the keycloak.  Here is the example to obtain the access token and send request to the Ray API Server

infrastructure/helm/quantumserverless/values.yaml

@@ -271,3 +271,29 @@ repositoryEnable: true
 prometheusEnable: true
 # prometheus:
 #    special configuration over the prometheus sub-chart
+
+# ===================
+# loki 
+# ===================
+
+lokiEnable: true
+
+loki:
+  loki:
+    commonConfig:
+      replication_factor: 1
+    storage:
+      type: 'filesystem'
+    auth_enabled: false
+  write:
+    replicas: 0
+  read:
+    replicas: 0
+  backend:
+    replicas: 0
+  singleBinary:
+    replicas: 1
+  gateway:
+    service:
+      type: NodePort
+