From 7bcdf2ff965b6e25ec4d4fe6713f7c3da0bfb801 Mon Sep 17 00:00:00 2001
From: Finn <finn@finn.io>
Date: Thu, 15 Aug 2024 12:11:37 -0700
Subject: [PATCH] raise some CPU limits to reduce CPU throttling

---
 k8s/keycloak/database.yaml                           |  1 +
 .../kube-prometheus/blackbox-exporter-patches.yaml   |  9 +++++++++
 .../kube-state-metrics-deployment-patches.yaml       |  3 +++
 k8s/operators/kube-prometheus/kustomization.yaml     | 12 ++++++++++++
 .../kube-prometheus/node-exporter-ds-patches.yaml    |  3 +++
 5 files changed, 28 insertions(+)
 create mode 100644 k8s/operators/kube-prometheus/blackbox-exporter-patches.yaml
 create mode 100644 k8s/operators/kube-prometheus/kube-state-metrics-deployment-patches.yaml
 create mode 100644 k8s/operators/kube-prometheus/node-exporter-ds-patches.yaml

diff --git a/k8s/keycloak/database.yaml b/k8s/keycloak/database.yaml
index 8b51691..6eaf957 100644
--- a/k8s/keycloak/database.yaml
+++ b/k8s/keycloak/database.yaml
@@ -3,6 +3,7 @@ kind: postgresql
 metadata:
   name: keycloak-database
 spec:
+  spiloFSGroup: 103 # https://github.com/zalando/postgres-operator/issues/988
   teamId: keycloak
   volume:
     size: 1Gi
diff --git a/k8s/operators/kube-prometheus/blackbox-exporter-patches.yaml b/k8s/operators/kube-prometheus/blackbox-exporter-patches.yaml
new file mode 100644
index 0000000..342a25c
--- /dev/null
+++ b/k8s/operators/kube-prometheus/blackbox-exporter-patches.yaml
@@ -0,0 +1,9 @@
+- op: replace
+  path: /spec/template/spec/containers/0/resources/limits/cpu
+  value: 200m
+- op: replace
+  path: /spec/template/spec/containers/1/resources/limits/cpu
+  value: 200m
+- op: replace
+  path: /spec/template/spec/containers/2/resources/limits/cpu
+  value: 200m
diff --git a/k8s/operators/kube-prometheus/kube-state-metrics-deployment-patches.yaml b/k8s/operators/kube-prometheus/kube-state-metrics-deployment-patches.yaml
new file mode 100644
index 0000000..8530643
--- /dev/null
+++ b/k8s/operators/kube-prometheus/kube-state-metrics-deployment-patches.yaml
@@ -0,0 +1,3 @@
+- op: replace
+  path: /spec/template/spec/containers/2/resources/limits/cpu
+  value: 500m
diff --git a/k8s/operators/kube-prometheus/kustomization.yaml b/k8s/operators/kube-prometheus/kustomization.yaml
index b3eff7b..ec0d77a 100644
--- a/k8s/operators/kube-prometheus/kustomization.yaml
+++ b/k8s/operators/kube-prometheus/kustomization.yaml
@@ -47,6 +47,18 @@ patches:
     target:
       kind: Deployment
       name: prometheus-operator
+  - path: blackbox-exporter-patches.yaml
+    target:
+      kind: Deployment
+      name: blackbox-exporter
+  - path: node-exporter-ds-patches.yaml
+    target:
+      kind: DaemonSet
+      name: node-exporter
+  - path: kube-state-metrics-deployment-patches.yaml
+    target:
+      kind: Deployment
+      name: kube-state-metrics
 secretGenerator:
   - name: grafana-config
     namespace: monitoring
diff --git a/k8s/operators/kube-prometheus/node-exporter-ds-patches.yaml b/k8s/operators/kube-prometheus/node-exporter-ds-patches.yaml
new file mode 100644
index 0000000..29d7cf9
--- /dev/null
+++ b/k8s/operators/kube-prometheus/node-exporter-ds-patches.yaml
@@ -0,0 +1,3 @@
+- op: replace
+  path: /spec/template/spec/containers/1/resources/limits/cpu
+  value: 250m