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elasticsearch.go
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elasticsearch.go
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package storage
import (
"fmt"
"strconv"
"strings"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
v1 "github.com/jaegertracing/jaeger-operator/pkg/apis/jaegertracing/v1"
esv1 "github.com/jaegertracing/jaeger-operator/pkg/storage/elasticsearch/v1"
"github.com/jaegertracing/jaeger-operator/pkg/util"
)
const (
volumeName = "certs"
volumeMountPath = "/certs"
caPath = volumeMountPath + "/ca"
keyPath = volumeMountPath + "/key"
certPath = volumeMountPath + "/cert"
elasticsearchURL = "https://elasticsearch:9200"
)
// ShouldDeployElasticsearch determines whether a new instance of Elasticsearch should be deployed
func ShouldDeployElasticsearch(s v1.JaegerStorageSpec) bool {
if !strings.EqualFold(s.Type, "elasticsearch") {
return false
}
_, ok := s.Options.Map()["es.server-urls"]
return !ok
}
// ElasticsearchDeployment represents an ES deployment for Jaeger
type ElasticsearchDeployment struct {
Jaeger *v1.Jaeger
CertScript string
Secrets []corev1.Secret
}
// InjectStorageConfiguration changes the given spec to include ES-related command line options
func (ed *ElasticsearchDeployment) InjectStorageConfiguration(p *corev1.PodSpec) {
p.Volumes = append(p.Volumes, corev1.Volume{
Name: volumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: jaegerSecret.instanceName(ed.Jaeger),
},
},
})
// we assume jaeger containers are first
if len(p.Containers) > 0 {
p.Containers[0].Args = append(p.Containers[0].Args,
"--es.server-urls="+elasticsearchURL,
"--es.tls=true",
"--es.tls.ca="+caPath,
"--es.tls.cert="+certPath,
"--es.tls.key="+keyPath)
if util.FindItem("--es.timeout", p.Containers[0].Args) == "" {
p.Containers[0].Args = append(p.Containers[0].Args, "--es.timeout=15s")
}
if util.FindItem("--es.num-shards", p.Containers[0].Args) == "" {
// taken from https://github.com/openshift/cluster-logging-operator/blob/32b69e8bcf61a805e8f3c45c664a3c08d1ee62d5/vendor/github.com/openshift/elasticsearch-operator/pkg/k8shandler/configmaps.go#L38
// every ES node is a data node
p.Containers[0].Args = append(p.Containers[0].Args, fmt.Sprintf("--es.num-shards=%d", dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount)))
}
if util.FindItem("--es.num-replicas", p.Containers[0].Args) == "" {
p.Containers[0].Args = append(p.Containers[0].Args, fmt.Sprintf("--es.num-replicas=%d",
calculateReplicaShards(ed.Jaeger.Spec.Storage.Elasticsearch.RedundancyPolicy, int(dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount)))))
}
if strings.EqualFold(util.FindItem("--es-archive.enabled", p.Containers[0].Args), "--es-archive.enabled=true") {
p.Containers[0].Args = append(p.Containers[0].Args,
"--es-archive.server-urls="+elasticsearchURL,
"--es-archive.tls=true",
"--es-archive.tls.ca="+caPath,
"--es-archive.tls.cert="+certPath,
"--es-archive.tls.key="+keyPath,
)
if util.FindItem("--es-archive.timeout", p.Containers[0].Args) == "" {
p.Containers[0].Args = append(p.Containers[0].Args, "--es-archive.timeout=15s")
}
if util.FindItem("--es-archive.num-shards", p.Containers[0].Args) == "" {
// taken from https://github.com/openshift/cluster-logging-operator/blob/32b69e8bcf61a805e8f3c45c664a3c08d1ee62d5/vendor/github.com/openshift/elasticsearch-operator/pkg/k8shandler/configmaps.go#L38
// every ES node is a data node
p.Containers[0].Args = append(p.Containers[0].Args, fmt.Sprintf("--es-archive.num-shards=%d", dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount)))
}
if util.FindItem("--es-archive.num-replicas", p.Containers[0].Args) == "" {
p.Containers[0].Args = append(p.Containers[0].Args, fmt.Sprintf("--es-archive.num-replicas=%d",
calculateReplicaShards(ed.Jaeger.Spec.Storage.Elasticsearch.RedundancyPolicy, int(dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount)))))
}
}
p.Containers[0].VolumeMounts = append(p.Containers[0].VolumeMounts, corev1.VolumeMount{
Name: volumeName,
ReadOnly: true,
MountPath: volumeMountPath,
})
}
}
// InjectSecretsConfiguration changes the given spec to include the options for the index cleaner
func (ed *ElasticsearchDeployment) InjectSecretsConfiguration(p *corev1.PodSpec) {
p.Volumes = append(p.Volumes, corev1.Volume{
Name: volumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: curatorSecret.instanceName(ed.Jaeger),
},
},
})
// we assume jaeger containers are first
if len(p.Containers) > 0 {
// the size of arguments array should be always 2
p.Containers[0].Args[1] = elasticsearchURL
p.Containers[0].Env = append(p.Containers[0].Env,
corev1.EnvVar{Name: "ES_TLS", Value: "true"},
corev1.EnvVar{Name: "ES_TLS_CA", Value: caPath},
corev1.EnvVar{Name: "ES_TLS_KEY", Value: keyPath},
corev1.EnvVar{Name: "ES_TLS_CERT", Value: certPath},
corev1.EnvVar{Name: "SHARDS", Value: strconv.Itoa(int(dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount)))},
corev1.EnvVar{Name: "REPLICAS", Value: strconv.Itoa(calculateReplicaShards(ed.Jaeger.Spec.Storage.Elasticsearch.RedundancyPolicy, int(dataNodesCount(ed.Jaeger.Spec.Storage.Elasticsearch.NodeCount))))},
)
p.Containers[0].VolumeMounts = append(p.Containers[0].VolumeMounts, corev1.VolumeMount{
Name: volumeName,
ReadOnly: true,
MountPath: volumeMountPath,
})
}
}
// Elasticsearch returns an ES CR for the deployment
func (ed *ElasticsearchDeployment) Elasticsearch() *esv1.Elasticsearch {
uuid := strings.Replace(util.DNSName(ed.Jaeger.Namespace+ed.Jaeger.Name), "-", "", -1)
return &esv1.Elasticsearch{
ObjectMeta: metav1.ObjectMeta{
Namespace: ed.Jaeger.Namespace,
Name: esSecret.name,
Labels: map[string]string{
"app": "jaeger",
"app.kubernetes.io/name": esSecret.name,
"app.kubernetes.io/instance": ed.Jaeger.Name,
"app.kubernetes.io/component": "elasticsearch",
"app.kubernetes.io/part-of": "jaeger",
// We cannot use jaeger-operator label because our controllers would try
// to manipulate with objects created by ES operator.
//"app.kubernetes.io/managed-by": "jaeger-operator",
},
OwnerReferences: []metav1.OwnerReference{util.AsOwner(ed.Jaeger)},
},
Spec: esv1.ElasticsearchSpec{
ManagementState: esv1.ManagementStateManaged,
RedundancyPolicy: ed.Jaeger.Spec.Storage.Elasticsearch.RedundancyPolicy,
Spec: esv1.ElasticsearchNodeSpec{
Image: ed.Jaeger.Spec.Storage.Elasticsearch.Image,
Resources: ed.Jaeger.Spec.Storage.Elasticsearch.Resources,
},
Nodes: getNodes(uuid, ed.Jaeger.Spec.Storage.Elasticsearch),
},
}
}
func getNodes(uuid string, es v1.ElasticsearchSpec) []esv1.ElasticsearchNode {
if es.NodeCount <= 3 {
return []esv1.ElasticsearchNode{
{
NodeCount: es.NodeCount,
Storage: es.Storage,
NodeSelector: es.NodeSelector,
Roles: []esv1.ElasticsearchNodeRole{esv1.ElasticsearchRoleClient, esv1.ElasticsearchRoleData, esv1.ElasticsearchRoleMaster},
GenUUID: &uuid,
},
}
}
genuuidmaster := uuid + "master"
return []esv1.ElasticsearchNode{
{
NodeCount: 3,
Storage: es.Storage,
NodeSelector: es.NodeSelector,
Roles: []esv1.ElasticsearchNodeRole{esv1.ElasticsearchRoleMaster},
GenUUID: &genuuidmaster,
},
{
NodeCount: dataNodesCount(es.NodeCount),
Storage: es.Storage,
NodeSelector: es.NodeSelector,
Roles: []esv1.ElasticsearchNodeRole{esv1.ElasticsearchRoleClient, esv1.ElasticsearchRoleData},
GenUUID: &uuid,
},
}
}
func dataNodesCount(nodesCount int32) int32 {
if nodesCount > 3 {
return nodesCount - 3
}
return nodesCount
}
// taken from https://github.com/openshift/cluster-logging-operator/blob/1ead6701c7c7af9c0578aa66597261079b2781d5/vendor/github.com/openshift/elasticsearch-operator/pkg/k8shandler/defaults.go#L33
func calculateReplicaShards(policyType esv1.RedundancyPolicyType, dataNodes int) int {
switch policyType {
case esv1.FullRedundancy:
return dataNodes - 1
case esv1.MultipleRedundancy:
return (dataNodes - 1) / 2
case esv1.SingleRedundancy:
return 1
case esv1.ZeroRedundancy:
return 0
default:
return 1
}
}