I am trying to override the Default rules in Kube-Prometheus-Stack. I have
enabled default rules when Kube-Prometheus-Stack was deployed. I tried with
jsonnet as shown in this example
https://github.com/prometheus-operator/kube-prometheus/blob/master/docs/developing-prometheus-rules-and-grafana-dashboards.md
.
But I think I am not following the steps correctly so its not working as
expected.
I followed the below steps..Kindly validate and please let me know what I
am missing here.
Created a jsonnet file (my-custom-update.jsonnet) to update a rule
"KubePodCrashLooping",
local filter = {
prometheusAlerts+:: {
groups: std.map(
function(group)
if group.name == 'kubernetes-apps' then
group {
rules: std.filter(function(rule)
rule.alert != "KubePodCrashLooping",
group.rules
)
}
else
group,
super.groups
),
},
};
local update = {
prometheusAlerts+:: {
groups: std.map(
function(group)
if group.name == 'kubernetes-apps' then
group {
rules: std.map(
function(rule)
if rule.alert == "KubePodCrashLooping" then
rule {
expr:
"kube_statefulset_status_replicas_ready{job=\"kube-state-metrics\",statefulset!=\"vault\"}
!=
kube_statefulset_status_replicas{job=\"kube-state-metrics\",statefulset!=\"vault\"}"
}
else
rule,
group.rules
)
}
else
group,
super.groups
),
},
};
local kp = (import 'kube-prometheus/kube-prometheus.libsonnet') + filter +
update + {
prometheusAlerts+:: (import 'prometheus-rules.json'),
};
{ ['00namespace-' + name]: kp.kubePrometheus[name] for name in
std.objectFields(kp.kubePrometheus) } +
{ ['0prometheus-operator-' + name]: kp.prometheusOperator[name] for name in
std.objectFields(kp.prometheusOperator) } +
{ ['node-exporter-' + name]: kp.nodeExporter[name] for name in
std.objectFields(kp.nodeExporter) } +
{ ['kube-state-metrics-' + name]: kp.kubeStateMetrics[name] for name in
std.objectFields(kp.kubeStateMetrics) } +
{ ['alertmanager-' + name]: kp.alertmanager[name] for name in
std.objectFields(kp.alertmanager) } +
{ ['prometheus-' + name]: kp.prometheus[name] for name in
std.objectFields(kp.prometheus) } +
{ ['prometheus-adapter-' + name]: kp.prometheusAdapter[name] for name in
std.objectFields(kp.prometheusAdapter) } +
{ ['grafana-' + name]: kp.grafana[name] for name in
std.objectFields(kp.grafana) }
Build this jsonnet file with the build.sh script provided in the document,
./build.sh my-custom-update.jsonnet
This has actually deleted the "KubePodCrashLooping" rule instead of
updating it. This created all the yaml files under manifests directory
I think I am missing something..Please advice.
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