I'm trying to upgrade a helm chart,
I get the error function "pod" not defined which make sense because I really have no such function.
The "pod" is coming from a json file which I convert into a configmap and helm is reading this value as a function and not as a straight string which is part of the json file.
This is a snippet of my configmap:
# Generated from 'pods' from https://raw.githubusercontent.com/coreos/prometheus-operator/master/contrib/kube-prometheus/manifests/grafana-dashboardDefinitions.yaml
# Do not change in-place! In order to change this file first read following link:
# https://github.com/helm/charts/tree/master/stable/prometheus-operator/hack
{{- if and .Values.grafana.enabled .Values.grafana.defaultDashboardsEnabled }}
apiVersion: v1
kind: ConfigMap
metadata:
name: {{ printf "%s-%s" (include "prometheus-operator.fullname" $) "services-health" | trunc 63 | trimSuffix "-" }}
labels:
{{- if $.Values.grafana.sidecar.dashboards.label }}
{{ $.Values.grafana.sidecar.dashboards.label }}: "1"
{{- end }}
app: {{ template "prometheus-operator.name" $ }}-grafana
{{ include "prometheus-operator.labels" $ | indent 4 }}
data:
services-health.json: |-
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"targets": [
{
"expr": "{__name__=~\"kube_pod_container_status_ready\", container=\"aggregation\",kubernetes_namespace=\"default\",chart=\"\"}",
"format": "time_series",
"instant": false,
"intervalFactor": 2,
"legendFormat": "{{pod}}",
"refId": "A"
}
}
{{- end }}
The error I get is coming from this line: "legendFormat": "{{pod}}",
And this is the error I get:
helm upgrade --dry-run prometheus-operator-chart /home/ubuntu/infra-devops/helm/vector-chart/prometheus-operator-chart/ Error: UPGRADE FAILED: parse error in "prometheus-operator/templates/grafana/dashboards/services-health.yaml": template: prometheus-operator/templates/grafana/dashboards/services-health.yaml:1213: function "pod" not defined
I tried to escape it but nothing worked. Anyone get idea about how I can work around this issue?
Escaping gotpl placeholders is possible using backticks. For example, in your scenario, instead of using {{ pod }}
you could write {{` {{ pod }} `}}
.