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Author SHA1 Message Date
701f1d4ead
chore(deps): update docker.io/volkerraschek/helm docker tag to v3.16.4
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2025-01-12 23:38:53 +00:00
5 changed files with 8 additions and 64 deletions

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@ -63,35 +63,6 @@ for customizations. These can be configured in more detail via `values.yaml`.
The following examples serve as individual configurations and as inspiration for how deployment problems can be solved. The following examples serve as individual configurations and as inspiration for how deployment problems can be solved.
#### Avoid CPU throttling by defining a CPU limit
If the application is deployed with a CPU resource limit, Prometheus may throw a CPU throttling warning for the
application. This has more or less to do with the fact that the application finds the number of CPUs of the host, but
cannot use the available CPU time to perform computing operations.
The application must be informed that despite several CPUs only a part (limit) of the available computing time is
available. As this is a Golang application, this can be implemented using `GOMAXPROCS`. The following example is one way
of defining `GOMAXPROCS` automatically based on the defined CPU limit like `100m`. Please keep in mind, that the CFS
rate of `100ms` - default on each kubernetes node, is also very important to avoid CPU throttling.
Further information about this topic can be found [here](https://kanishk.io/posts/cpu-throttling-in-containerized-go-apps/).
> [!NOTE]
> The environment variable `GOMAXPROCS` is set automatically, when a CPU limit is defined. An explicit configuration is
> not anymore required.
```bash
helm install prometheus-postgres-exporter prometheus-exporters/prometheus-postgres-exporter \
--set 'config.database.secret.databaseUsername=postgres' \
--set 'config.database.secret.databasePassword=postgres' \
--set 'config.database.secret.databaseConnectionUrl="postgres.example.local:5432/postgres?ssl=disable"' \
--set 'prometheus.metrics.enabled=true' \
--set 'prometheus.metrics.serviceMonitor.enabled=true' \
--set 'deployment.postgresExporter.env.name=GOMAXPROCS' \
--set 'deployment.postgresExporter.env.valueFrom.resourceFieldRef.resource=limits.cpu' \
--set 'deployment.postgresExporter.resources.limits.cpu=100m'
```
#### TLS authentication and encryption #### TLS authentication and encryption
The first example shows how to deploy the metric exporter with TLS encryption. The verification of the custom TLS The first example shows how to deploy the metric exporter with TLS encryption. The verification of the custom TLS

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@ -29,6 +29,12 @@
], ],
"labels": [ "renovate" ], "labels": [ "renovate" ],
"packageRules": [ "packageRules": [
{
"addLabels": [ "renovate/automerge", "renovate/droneci" ],
"automerge": true,
"matchManagers": "droneci",
"matchUpdateTypes": [ "minor", "patch"]
},
{ {
"addLabels": [ "renovate/automerge", "renovate/npm" ], "addLabels": [ "renovate/automerge", "renovate/npm" ],
"automerge": true, "automerge": true,
@ -36,20 +42,6 @@
"matchManagers": [ "npm" ], "matchManagers": [ "npm" ],
"matchUpdateTypes": [ "minor", "patch"] "matchUpdateTypes": [ "minor", "patch"]
}, },
{
"addLabels": [ "renovate/automerge", "renovate/container" ],
"automerge": true,
"excludePackagePatterns": [
"prometheuscommunity/postgres-exporter"
],
"matchDatasources": [
"docker"
],
"matchUpdateTypes": [
"minor",
"patch"
]
},
{ {
"addLabels": [ "renovate/automerge", "renovate/documentation" ], "addLabels": [ "renovate/automerge", "renovate/documentation" ],
"automerge": true, "automerge": true,

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@ -9,17 +9,6 @@
{{- end }} {{- end }}
{{- end }} {{- end }}
{{/* env */}}
{{- define "prometheus-postgres-exporter.deployment.env" -}}
{{- $env := dict "env" (.Values.deployment.postgresExporter.env | default (list) ) }}
{{- if and (hasKey .Values.deployment.postgresExporter.resources "limits") (hasKey .Values.deployment.postgresExporter.resources.limits "cpu") }}
{{- $env = merge $env (dict "env" (list (dict "name" "GOMAXPROCS" "valueFrom" (dict "resourceFieldRef" (dict "resource" "limits.cpu"))))) }}
{{- end }}
{{ toYaml $env }}
{{- end -}}
{{/* envFrom */}} {{/* envFrom */}}
{{- define "prometheus-postgres-exporter.deployment.envFrom" -}} {{- define "prometheus-postgres-exporter.deployment.envFrom" -}}

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@ -34,10 +34,9 @@ spec:
{{- range .Values.deployment.postgresExporter.args }} {{- range .Values.deployment.postgresExporter.args }}
- {{ . | quote }} - {{ . | quote }}
{{- end }} {{- end }}
{{- $env := (include "prometheus-postgres-exporter.deployment.env" . | fromYaml) }} {{- with .Values.deployment.postgresExporter.env }}
{{- if and (hasKey $env "env") (gt (len $env.env) 0) }}
env: env:
{{- toYaml $env.env | nindent 8 }} {{- toYaml . | nindent 8 }}
{{- end }} {{- end }}
{{- $envFrom := (include "prometheus-postgres-exporter.deployment.envFrom" . | fromYaml) }} {{- $envFrom := (include "prometheus-postgres-exporter.deployment.envFrom" . | fromYaml) }}
{{- if hasKey $envFrom "envFrom" }} {{- if hasKey $envFrom "envFrom" }}

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@ -227,13 +227,6 @@ tests:
cpu: 25m cpu: 25m
memory: 100MB memory: 100MB
asserts: asserts:
- equal:
path: spec.template.spec.containers[0].env
value:
- name: GOMAXPROCS
valueFrom:
resourceFieldRef:
resource: limits.cpu
- equal: - equal:
path: spec.template.spec.containers[0].resources path: spec.template.spec.containers[0].resources
value: value: