Using https://github.com/helm/charts/tree/master/stable/elasticsearch-exporter and trying to pass the part below via --set parameter but so far no luck.
podAnnotations:
prometheus.io/scrape: "true"
prometheus.io/port: "9108"so far I tried helm install --name prometheus-elasticsearch-exporter stable/elasticsearch-exporter with
--set podAnnotations."prometheus.io/scrape"=true,podAnnotations."prometheus.io/port"=9108
--set podAnnotations[0]."prometheus.io/scrape"=true,podAnnotations[0]."prometheus.io/port"=9108
--set podAnnotations."prometheus\.io\/scrape"=true,podAnnotations."prometheus\.io\/port"=9108
--set podAnnotations={"prometheus.io/scrape":true,"prometheus.io/port":9108}
--set podAnnotations={"prometheus.io/scrape"=true\,"prometheus.io/port"=9108}and unfortunately, none of those worked.
More details can be found in here
Try the following:
--set-string podAnnotations."prometheus\.io/scrape"=true \
--set-string podAnnotations."prometheus\.io/port"=9108You need to escape the annotation key strings correctly, as described precisely in the doc you linked:
Similarly, you can escape dot sequences as well, which may come in handy when charts use the
toYamlfunction to parse annotations, labels and node selectors. The syntax for--set nodeSelector."kubernetes\.io/role"=masterbecomesnodeSelector: kubernetes.io/role: master
You should use set-string instead of set because you want the annotation values to be strings rather than boolean true and number 9018.
Here's the result I'm getting using those flags:
$ helm template . \
--set-string podAnnotations."prometheus\.io/scrape"=true \
--set-string podAnnotations."prometheus\.io/port"=9108 \
| grep -C 5 annotations
template:
metadata:
labels:
app: elasticsearch-exporter
release: "release-name"
annotations:
prometheus.io/port: "9108"
prometheus.io/scrape: "true"
spec:
restartPolicy: Always