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deployment_exporter_builder.go
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deployment_exporter_builder.go
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package elasticsearch
import (
"fmt"
"github.com/disaster37/k8sbuilder"
elasticsearchcrd "github.com/webcenter-fr/elasticsearch-operator/apis/elasticsearch/v1"
appv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/utils/ptr"
)
// BuildDeploymentExporter permit to generate deployment for exporter
func buildDeploymentExporters(es *elasticsearchcrd.Elasticsearch) (dpls []appv1.Deployment, err error) {
if !es.Spec.Monitoring.IsPrometheusMonitoring() {
return nil, nil
}
dpls = make([]appv1.Deployment, 0, 1)
cb := k8sbuilder.NewContainerBuilder()
ptb := k8sbuilder.NewPodTemplateBuilder()
exporterContainer := &corev1.Container{}
// Initialise Kibana container from user provided
cb.WithContainer(exporterContainer).
Container().Name = "exporter"
// Command and arguments
scheme := "https"
if !es.Spec.Tls.IsTlsEnabled() {
scheme = "http"
}
cb.Container().Args = []string{
fmt.Sprintf("--es.uri=%s://%s.%s.svc:9200", scheme, GetGlobalServiceName(es), es.Namespace),
"--es.ssl-skip-verify",
"--es.all",
"--collector.clustersettings",
"--collector.cluster-info",
"--es.indices",
"--es.indices_settings",
"--es.indices_mappings",
"--es.aliases",
"--es.ilm",
"--es.shards",
"--es.snapshots",
"--es.slm",
"--es.data_stream",
}
// Compute Env
cb.WithEnv([]corev1.EnvVar{
{
Name: "ES_USERNAME",
Value: "elastic",
},
{
Name: "ES_PASSWORD",
ValueFrom: &corev1.EnvVarSource{
SecretKeyRef: &corev1.SecretKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: GetSecretNameForCredentials(es),
},
Key: "elastic",
},
},
},
})
// Compute ports
cb.WithPort([]corev1.ContainerPort{
{
Name: "exporter",
ContainerPort: 9114,
Protocol: corev1.ProtocolTCP,
},
})
// Compute resources
if es.Spec.Monitoring.Prometheus.Resources != nil {
cb.WithResource(es.Spec.Monitoring.Prometheus.Resources)
} else {
cb.WithResource(&corev1.ResourceRequirements{
Requests: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("25m"),
corev1.ResourceMemory: resource.MustParse("64Mi"),
},
Limits: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("100m"),
corev1.ResourceMemory: resource.MustParse("512Mi"),
},
})
}
// Compute image
cb.WithImage(GetExporterImage(es))
// Compute image pull policy
cb.WithImagePullPolicy(es.Spec.Monitoring.Prometheus.ImagePullPolicy)
// Compute security context
cb.WithSecurityContext(&corev1.SecurityContext{
Capabilities: &corev1.Capabilities{
Drop: []corev1.Capability{
"ALL",
},
},
RunAsNonRoot: ptr.To[bool](true),
RunAsUser: ptr.To[int64](1000),
})
// Compute liveness
cb.WithLivenessProbe(&corev1.Probe{
TimeoutSeconds: 10,
PeriodSeconds: 30,
FailureThreshold: 3,
SuccessThreshold: 1,
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/healthz",
Port: intstr.FromInt(9114),
},
},
})
// Compute readiness
cb.WithReadinessProbe(&corev1.Probe{
TimeoutSeconds: 10,
PeriodSeconds: 30,
FailureThreshold: 3,
SuccessThreshold: 1,
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/healthz",
Port: intstr.FromInt(9114),
},
},
})
// Compute startup
cb.WithStartupProbe(&corev1.Probe{
InitialDelaySeconds: 10,
TimeoutSeconds: 5,
PeriodSeconds: 10,
FailureThreshold: 30,
SuccessThreshold: 1,
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/healthz",
Port: intstr.FromInt(9114),
},
},
})
// Compute labels
ptb.WithLabels(map[string]string{
"exporter": "true",
"elasticsearch": "true",
}, k8sbuilder.Merge)
// Compute containers
ptb.WithContainers([]corev1.Container{*cb.Container()}, k8sbuilder.Merge)
// Pod template name
ptb.PodTemplate().Name = GetExporterDeployementName(es)
// Image pull secret
ptb.PodTemplate().Spec.ImagePullSecrets = es.Spec.Monitoring.Prometheus.ImagePullSecrets
// Compute Deployment
dpl := &appv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Namespace: es.Namespace,
Name: GetExporterDeployementName(es),
Labels: getLabels(es),
Annotations: getAnnotations(es),
},
Spec: appv1.DeploymentSpec{
Replicas: ptr.To[int32](1),
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{
"exporter": "true",
"elasticsearch": "true",
},
},
Template: *ptb.PodTemplate(),
},
}
dpls = append(dpls, *dpl)
return dpls, nil
}