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fix: tune cert-manager resource defaults #7

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Merged
patrickleet merged 1 commit into from
May 25, 2026
Merged

fix: tune cert-manager resource defaults #7

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54 changes: 19 additions & 35 deletions functions/render/200-cert-manager.yaml.gotmpl
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,24 @@
# Upstream: https://github.com/cert-manager/cert-manager
#

{{- $chartDefaults := dict
"crds" (dict "enabled" true)
"global" (dict "leaderElection" (dict "namespace" $state.namespace))
"resources" (dict
"requests" (dict "cpu" "15m" "memory" "100Mi")
"limits" (dict "cpu" "200m" "memory" "256Mi")
)
"cainjector" (dict "resources" (dict
"requests" (dict "cpu" "15m" "memory" "194Mi")
"limits" (dict "cpu" "100m" "memory" "512Mi")
))
"webhook" (dict "resources" (dict
"requests" (dict "cpu" "15m" "memory" "100Mi")
"limits" (dict "cpu" "100m" "memory" "256Mi")
))
}}
{{- $mergedValues := mergeOverwrite $chartDefaults ($state.values | default dict) }}

---
apiVersion: helm.m.crossplane.io/v1beta1
kind: Release
Expand All @@ -28,41 +46,7 @@ spec:
{{- toYaml $state.overrideAllValues | nindent 6 }}
{{- else }}
values:
crds:
enabled: true
global:
leaderElection:
namespace: {{ $state.namespace }}
# Burstable defaults: cert-manager controller, cainjector and webhook
# all ship as BestEffort by default and get OOM-evicted under node
# pressure. cainjector was observed at 163Mi on pat-local. Sized for
# a small-to-medium cluster; override via spec.values for big fleets.
resources:
requests:
cpu: 50m
memory: 128Mi
limits:
cpu: 200m
memory: 256Mi
cainjector:
resources:
requests:
cpu: 25m
memory: 192Mi
limits:
cpu: 100m
memory: 384Mi
webhook:
resources:
requests:
cpu: 25m
memory: 64Mi
limits:
cpu: 100m
memory: 128Mi
{{- if gt (len $state.values) 0 }}
{{- toYaml $state.values | nindent 6 }}
{{- end }}
{{- toYaml $mergedValues | nindent 6 }}
{{- end }}
rollbackLimit: 3
providerConfigRef:
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5 changes: 5 additions & 0 deletions tests/test-render/main.k
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,11 @@ _items = [
version = "v1.19.2"
}
namespace = "cert-manager"
values = {
resources.requests = {cpu = "15m", memory = "100Mi"}
cainjector.resources.requests = {cpu = "15m", memory = "194Mi"}
webhook.resources.requests = {cpu = "15m", memory = "100Mi"}
}
}
}
]
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