feat(add-ons): Add observability stack with kube-prometheus-stack, loki and alloy
This commit is contained in:
@@ -0,0 +1,155 @@
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apiVersion: argoproj.io/v1alpha1
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kind: Application
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metadata:
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annotations:
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argocd.argoproj.io/sync-wave: "4"
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name: alloy
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namespace: argocd
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spec:
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destination:
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namespace: monitoring
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server: https://kubernetes.default.svc
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project: default
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source:
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chart: alloy
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helm:
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values: |
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alloy:
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configMap:
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content: |
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discovery.kubernetes "pods" {
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role = "pod"
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selectors {
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role = "pod"
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field = "spec.nodeName=" + sys.env("HOSTNAME")
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}
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}
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discovery.relabel "pods" {
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targets = discovery.kubernetes.pods.targets
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rule {
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source_labels = ["__meta_kubernetes_namespace"]
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target_label = "namespace"
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}
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rule {
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source_labels = ["__meta_kubernetes_pod_name"]
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target_label = "pod"
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}
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rule {
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source_labels = ["__meta_kubernetes_pod_container_name"]
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target_label = "container"
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}
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rule {
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source_labels = ["__meta_kubernetes_pod_label_app_kubernetes_io_name", "__meta_kubernetes_pod_label_app"]
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regex = "^;*([^;]+)(;.*)?$"
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target_label = "app"
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}
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rule {
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source_labels = ["__meta_kubernetes_pod_node_name"]
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target_label = "node"
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}
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rule {
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source_labels = ["__meta_kubernetes_pod_uid", "__meta_kubernetes_pod_container_name"]
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separator = "/"
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replacement = "/var/log/pods/*$1/*.log"
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target_label = "__path__"
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}
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}
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local.file_match "pods" {
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path_targets = discovery.relabel.pods.output
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}
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loki.source.file "pods" {
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targets = local.file_match.pods.targets
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forward_to = [loki.process.pods.receiver]
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}
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loki.process "pods" {
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stage.cri {}
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// Changes on every rotation and would start a new stream.
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stage.label_drop {
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values = ["filename"]
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}
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forward_to = [loki.write.default.receiver]
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}
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loki.relabel "journal" {
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forward_to = []
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rule {
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source_labels = ["__journal__systemd_unit"]
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target_label = "unit"
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}
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rule {
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source_labels = ["__journal__hostname"]
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target_label = "node"
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}
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rule {
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source_labels = ["__journal_priority_keyword"]
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target_label = "level"
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}
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}
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// Default paths include /run/log/journal, where Raspberry Pi OS keeps a volatile journal.
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loki.source.journal "node" {
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max_age = "12h"
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labels = {job = "node/journal"}
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relabel_rules = loki.relabel.journal.rules
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forward_to = [loki.write.default.receiver]
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}
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loki.write "default" {
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endpoint {
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url = "http://loki.monitoring.svc.cluster.local:3100/loki/api/v1/push"
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}
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}
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mounts:
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varlog: true
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extra:
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- name: machine-id
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mountPath: /etc/machine-id
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readOnly: true
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- name: run-journal
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mountPath: /run/log/journal
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readOnly: true
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- name: storage
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mountPath: /var/lib/alloy
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# Tail positions survive pod restarts, so logs are not shipped twice.
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storagePath: /var/lib/alloy
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resources:
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limits:
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cpu: 500m
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memory: 512Mi
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requests:
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cpu: 50m
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memory: 128Mi
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configReloader:
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resources:
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limits:
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cpu: 50m
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memory: 100Mi
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controller:
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volumes:
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extra:
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- name: machine-id
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hostPath:
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path: /etc/machine-id
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type: File
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- name: run-journal
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hostPath:
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path: /run/log/journal
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- name: storage
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hostPath:
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path: /var/lib/alloy
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type: DirectoryOrCreate
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repoURL: https://grafana.github.io/helm-charts
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targetRevision: 1.13.0
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syncPolicy:
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automated:
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prune: true
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selfHeal: true
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syncOptions:
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- CreateNamespace=true
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- ServerSideApply=true
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@@ -0,0 +1,180 @@
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apiVersion: argoproj.io/v1alpha1
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kind: Application
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metadata:
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annotations:
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argocd.argoproj.io/sync-wave: "3"
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name: kube-prometheus-stack
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namespace: argocd
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spec:
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destination:
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namespace: monitoring
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server: https://kubernetes.default.svc
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project: default
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sources:
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- chart: kube-prometheus-stack
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helm:
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values: |
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alertmanager:
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enabled: false
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kubelet:
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serviceMonitor:
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# The first rule is the chart's default, as lists are replaced; k3s also serves apiserver series here.
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metricRelabelings:
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- action: drop
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sourceLabels: [__name__, le]
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regex: (csi_operations|storage_operation_duration)_seconds_bucket;(0.25|2.5|15|25|120|600)(\.0)?
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- action: drop
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sourceLabels: [__name__]
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regex: (apiserver|etcd|kine)_.*
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# Scraped through ScrapeConfigs since ArgoCD ignores Endpoints; enabled for dashboards and rules.
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kubeControllerManager:
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service:
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enabled: false
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serviceMonitor:
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enabled: false
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kubeScheduler:
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service:
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enabled: false
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serviceMonitor:
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enabled: false
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kubeProxy:
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service:
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enabled: false
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serviceMonitor:
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enabled: false
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# k3s runs on SQLite (kine), there is no etcd to scrape.
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kubeEtcd:
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enabled: false
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prometheusOperator:
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admissionWebhooks:
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certManager:
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enabled: true
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resources:
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limits:
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cpu: 200m
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memory: 256Mi
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requests:
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cpu: 20m
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memory: 64Mi
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prometheusConfigReloader:
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resources:
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limits:
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cpu: 50m
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memory: 64Mi
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requests:
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cpu: 10m
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memory: 32Mi
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kube-state-metrics:
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resources:
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limits:
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cpu: 200m
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memory: 256Mi
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requests:
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cpu: 20m
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memory: 64Mi
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prometheus-node-exporter:
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resources:
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limits:
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cpu: 200m
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memory: 128Mi
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requests:
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cpu: 20m
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memory: 32Mi
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prometheus:
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prometheusSpec:
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retention: 90d
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retentionSize: 45GB
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# Pick up monitors and rules from every namespace, not just this release.
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podMonitorSelectorNilUsesHelmValues: false
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probeSelectorNilUsesHelmValues: false
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ruleSelectorNilUsesHelmValues: false
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scrapeConfigSelectorNilUsesHelmValues: false
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serviceMonitorSelectorNilUsesHelmValues: false
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resources:
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limits:
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cpu: "1"
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memory: 3Gi
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requests:
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cpu: 200m
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memory: 1Gi
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storageSpec:
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volumeClaimTemplate:
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spec:
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accessModes:
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- ReadWriteOnce
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resources:
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requests:
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storage: 50Gi
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grafana:
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admin:
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existingSecret: grafana-admin
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additionalDataSources:
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- name: Loki
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type: loki
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uid: loki
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url: http://loki.monitoring.svc.cluster.local:3100
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envValueFrom:
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GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET:
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secretKeyRef:
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name: grafana-oidc
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key: client-secret
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GF_DATABASE_PASSWORD:
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secretKeyRef:
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name: grafana-db
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key: password
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grafana.ini:
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database:
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type: postgres
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host: postgres-rw.postgres.svc.cluster.local:5432
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name: grafana
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user: grafana
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ssl_mode: require
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server:
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root_url: https://grafana.whyredfire.dev
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auth:
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# Break-glass admin login stays reachable at /login?disableAutoLogin=true
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oauth_auto_login: true
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signout_redirect_url: https://auth.whyredfire.dev/application/o/grafana/end-session/
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auth.generic_oauth:
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enabled: true
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name: Authentik
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client_id: grafana
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scopes: openid profile email
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auth_url: https://auth.whyredfire.dev/application/o/authorize/
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token_url: https://auth.whyredfire.dev/application/o/token/
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api_url: https://auth.whyredfire.dev/application/o/userinfo/
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use_pkce: true
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login_attribute_path: preferred_username
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role_attribute_path: contains(groups, 'admins') && 'Admin'
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role_attribute_strict: true
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resources:
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limits:
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cpu: 500m
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memory: 512Mi
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requests:
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cpu: 50m
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memory: 256Mi
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sidecar:
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dashboards:
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searchNamespace: ALL
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resources:
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limits:
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cpu: 100m
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memory: 256Mi
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requests:
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cpu: 10m
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memory: 64Mi
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testFramework:
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enabled: false
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repoURL: https://prometheus-community.github.io/helm-charts
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targetRevision: 91.8.2
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- path: add-ons/kube-prometheus-stack
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repoURL: https://gitea.whyredfire.dev/whyredfire/gitops.git
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targetRevision: main
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syncPolicy:
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automated:
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prune: true
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selfHeal: true
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syncOptions:
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- CreateNamespace=true
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- ServerSideApply=true
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@@ -1,10 +1,13 @@
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apiVersion: kustomize.config.k8s.io/v1beta1
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kind: Kustomization
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resources:
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- alloy.yaml
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- argocd-dashboard.yaml
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- authentik.yaml
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- cert-manager.yaml
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- cnpg.yaml
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- kube-prometheus-stack.yaml
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- loki.yaml
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- postgres.yaml
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- sealed-secrets.yaml
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- traefik.yaml
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@@ -0,0 +1,119 @@
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apiVersion: argoproj.io/v1alpha1
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kind: Application
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metadata:
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annotations:
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argocd.argoproj.io/sync-wave: "4"
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name: loki
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namespace: argocd
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spec:
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destination:
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namespace: monitoring
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server: https://kubernetes.default.svc
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project: default
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sources:
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- chart: loki
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helm:
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values: |
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loki:
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auth_enabled: false
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commonConfig:
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replication_factor: 1
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schemaConfig:
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configs:
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- from: "2026-09-01"
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store: tsdb
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object_store: s3
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schema: v13
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index:
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prefix: loki_index_
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period: 24h
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storage:
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bucketNames:
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chunks: loki
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ruler: loki
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s3:
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endpoint: http://garage.garage.svc.cluster.local:3900
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region: garage
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accessKeyId: ${LOKI_S3_ACCESS_KEY_ID}
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secretAccessKey: ${LOKI_S3_SECRET_ACCESS_KEY}
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s3ForcePathStyle: true
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insecure: true
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ingester:
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chunk_encoding: zstd
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compactor:
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retention_enabled: true
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delete_request_store: s3
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limits_config:
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retention_period: 2160h
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singleBinary:
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replicas: 1
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extraEnvFrom:
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- secretRef:
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name: loki-s3
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resources:
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limits:
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cpu: "1"
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memory: 2Gi
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requests:
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cpu: 100m
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memory: 512Mi
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# Memory limits sit ~20% above memcached's allocation.
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chunksCache:
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allocatedMemory: 512
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resources:
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limits:
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cpu: 500m
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memory: 614Mi
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requests:
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cpu: 50m
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memory: 614Mi
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resultsCache:
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allocatedMemory: 128
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resources:
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limits:
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cpu: 500m
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memory: 154Mi
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requests:
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cpu: 50m
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memory: 154Mi
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memcachedExporter:
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resources:
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limits:
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cpu: 100m
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memory: 64Mi
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requests:
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cpu: 10m
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memory: 16Mi
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sidecar:
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resources:
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limits:
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cpu: 100m
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memory: 256Mi
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requests:
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cpu: 10m
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memory: 64Mi
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# Grafana and Alloy talk to Loki directly, there is a single tenant.
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gateway:
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enabled: false
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lokiCanary:
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enabled: false
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test:
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enabled: false
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backend:
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replicas: 0
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read:
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replicas: 0
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write:
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replicas: 0
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repoURL: https://grafana-community.github.io/helm-charts
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targetRevision: 18.13.7
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- path: add-ons/loki
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repoURL: https://gitea.whyredfire.dev/whyredfire/gitops.git
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targetRevision: main
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syncPolicy:
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automated:
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prune: true
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selfHeal: true
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syncOptions:
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- CreateNamespace=true
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- ServerSideApply=true
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Reference in New Issue
Block a user