An example conversion of a legacy custom jsonnet file to release-0.8
format can be seen by viewing and comparing this
release-0.3 jsonnet file (when the github
repo was under https://github.com/coreos/kube-prometheus...)
and the corresponding release-0.8 jsonnet file.
These two files have had necessary blank lines added so that they can be compared side-by-side and line-by-line on screen.
The conversion covers both the change of stopping using ksonnet after release-0.3 and also the major migration after release-0.7 as described in migration-guide.md
The sample files are intended as an example of format conversion and not necessarily best practice for the files in release-0.3 or release-0.8.
Below are three sample extracts of the conversion as an indication of the changes required.
| release-0.3 | release-0.8 |
|---|---|
local kp =
(import 'kube-prometheus/kube-prometheus.libsonnet') +
(import 'kube-prometheus/kube-prometheus-kubeadm.libsonnet') +
(import 'kube-prometheus/kube-prometheus-static-etcd.libsonnet') +
{
_config+:: {
// Override namespace
namespace: 'monitoring',
|
local kp =
(import 'kube-prometheus/main.libsonnet') +
// kubeadm now achieved by setting platform value - see 9 lines below
(import 'kube-prometheus/addons/static-etcd.libsonnet') +
(import 'kube-prometheus/addons/podsecuritypolicies.libsonnet') +
{
values+:: {
common+: {
namespace: 'monitoring',
},
// Add kubeadm platform-specific items,
// including kube-contoller-manager and kube-scheduler discovery
kubePrometheus+: {
platform: 'kubeadm',
}, |
| release-0.3 | release-0.8 |
|---|---|
// Add additional ingresses
// See https://github.com/coreos/kube-prometheus/...
// tree/master/examples/ingress.jsonnet
ingress+:: {
alertmanager:
ingress.new() +
ingress.mixin.metadata.withName('alertmanager') +
ingress.mixin.metadata.withNamespace($._config.namespace) +
ingress.mixin.metadata.withAnnotations({
'kubernetes.io/ingress.class': 'nginx-api',
}) +
ingress.mixin.spec.withRules(
ingressRule.new() +
ingressRule.withHost(alert_manager_host) +
ingressRule.mixin.http.withPaths(
ingressRuleHttpPath.new() +
ingressRuleHttpPath.mixin.backend
.withServiceName('alertmanager-operated') +
ingressRuleHttpPath.mixin.backend.withServicePort(9093)
),
) +
// Note we do not need a TLS secretName here as we are going to use the
// nginx-ingress default secret which is a wildcard
// secretName would need to be in the same namespace at this time,
// see https://github.com/kubernetes/ingress-nginx/issues/2371
ingress.mixin.spec.withTls(
ingressTls.new() +
ingressTls.withHosts(alert_manager_host)
),
|
// Add additional ingresses
// See https://github.com/prometheus-operator/kube-prometheus/...
// blob/main/examples/ingress.jsonnet
ingress+:: {
alertmanager: {
apiVersion: 'networking.k8s.io/v1',
kind: 'Ingress',
metadata: {
name: 'alertmanager',
namespace: $.values.common.namespace,
annotations: {
'kubernetes.io/ingress.class': 'nginx-api',
},
},
spec: {
rules: [{
host: alert_manager_host,
http: {
paths: [{
path: '/',
pathType: 'Prefix',
backend: {
service: {
name: 'alertmanager-operated',
port: {
number: 9093,
},
},
},
}],
},
}],
tls: [{
hosts: [alert_manager_host],
}],
},
}, |
| release-0.3 | release-0.8 |
|---|---|
// Additional prometheus rules
// See https://github.com/coreos/kube-prometheus/docs/...
// developing-prometheus-rules-and-grafana-dashboards.md
//
// cat my-prometheus-rules.yaml | \
// gojsontoyaml -yamltojson | \
// jq . > my-prometheus-rules.json
prometheusRules+:: {
groups+: import 'my-prometheus-rules.json',
},
};
|
// Additional prometheus rules
// See https://github.com/prometheus-operator/kube-prometheus/blob/main/...
// docs/developing-prometheus-rules-and-grafana-dashboards.md...
// #pre-rendered-rules
// cat my-prometheus-rules.yaml | \
// gojsontoyaml -yamltojson | \
// jq . > my-prometheus-rules.json
prometheusMe: {
rules: {
apiVersion: 'monitoring.coreos.com/v1',
kind: 'PrometheusRule',
metadata: {
name: 'my-prometheus-rule',
namespace: $.values.common.namespace,
labels: {
'app.kubernetes.io/name': 'kube-prometheus',
'app.kubernetes.io/part-of': 'kube-prometheus',
prometheus: 'k8s',
role: 'alert-rules',
},
},
spec: {
groups: import 'my-prometheus-rules.json',
},
},
},
};
...
+ { ['prometheus-my-' + name]: kp.prometheusMe[name] for name in std.objectFields(kp.prometheusMe) } |