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resource.go
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resource.go
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package scyllacluster
import (
"fmt"
"maps"
"path"
"sort"
"strconv"
"strings"
scylladbassets "github.com/scylladb/scylla-operator/assets/scylladb"
scyllav1 "github.com/scylladb/scylla-operator/pkg/api/scylla/v1"
"github.com/scylladb/scylla-operator/pkg/features"
"github.com/scylladb/scylla-operator/pkg/helpers"
"github.com/scylladb/scylla-operator/pkg/helpers/slices"
"github.com/scylladb/scylla-operator/pkg/naming"
"github.com/scylladb/scylla-operator/pkg/pointer"
appsv1 "k8s.io/api/apps/v1"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
networkingv1 "k8s.io/api/networking/v1"
policyv1 "k8s.io/api/policy/v1"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/klog/v2"
)
const (
scyllaAgentConfigVolumeName = "scylla-agent-config-volume"
scyllaAgentAuthTokenVolumeName = "scylla-agent-auth-token-volume"
scylladbServingCertsVolumeName = "scylladb-serving-certs"
scylladbClientCAVolumeName = "scylladb-client-ca"
scylladbUserAdminVolumeName = "scylladb-user-admin"
scylladbAlternatorServingCertsVolumeName = "scylladb-alternator-serving-certs"
)
const (
rootUID int64 = 0
rootGID int64 = 0
)
const (
portNameCQL = "cql"
portNameCQLSSL = "cql-ssl"
portNameCQLShardAware = "cql-shard-aware"
portNameCQLSSLShardAware = "cql-ssl-shard-aware"
portNameThrift = "thrift"
alternatorInsecurePort = 8000
alternatorInsecurePortName = "alternator"
alternatorTLSPort = 8043
alternatorTLSPortName = "alternator-tls"
)
func IdentityService(c *scyllav1.ScyllaCluster) *corev1.Service {
svcLabels := map[string]string{}
maps.Copy(svcLabels, c.Labels)
maps.Copy(svcLabels, naming.ClusterLabels(c))
svcLabels[naming.ScyllaServiceTypeLabel] = string(naming.ScyllaServiceTypeIdentity)
svcAnnotations := map[string]string{}
maps.Copy(svcAnnotations, c.Annotations)
return &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: naming.IdentityServiceName(c),
Namespace: c.Namespace,
Labels: svcLabels,
Annotations: svcAnnotations,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(c, scyllaClusterControllerGVK),
},
},
Spec: corev1.ServiceSpec{
Type: corev1.ServiceTypeClusterIP,
Selector: naming.ClusterLabels(c),
Ports: servicePorts(c),
},
}
}
func MemberService(sc *scyllav1.ScyllaCluster, rackName, name string, oldService *corev1.Service, jobs map[string]*batchv1.Job) (*corev1.Service, error) {
svcLabels := map[string]string{}
if sc.Spec.ExposeOptions != nil && sc.Spec.ExposeOptions.NodeService.Labels != nil {
maps.Copy(svcLabels, sc.Spec.ExposeOptions.NodeService.Labels)
} else {
maps.Copy(svcLabels, sc.Labels)
}
maps.Copy(svcLabels, naming.ClusterLabels(sc))
svcLabels[naming.DatacenterNameLabel] = sc.Spec.Datacenter.Name
svcLabels[naming.RackNameLabel] = rackName
svcLabels[naming.ScyllaServiceTypeLabel] = string(naming.ScyllaServiceTypeMember)
var replaceAddr string
var hasReplaceLabel bool
if oldService != nil {
replaceAddr, hasReplaceLabel = oldService.Labels[naming.ReplaceLabel]
}
// Only new service should get the replace address, old service keeps "" until deleted.
if !hasReplaceLabel || len(replaceAddr) != 0 {
rackStatus, ok := sc.Status.Racks[rackName]
if ok {
replaceAddr := rackStatus.ReplaceAddressFirstBoot[name]
if len(replaceAddr) != 0 {
svcLabels[naming.ReplaceLabel] = replaceAddr
}
}
}
svcAnnotations := map[string]string{}
if sc.Spec.ExposeOptions != nil && sc.Spec.ExposeOptions.NodeService.Annotations != nil {
maps.Copy(svcAnnotations, sc.Spec.ExposeOptions.NodeService.Annotations)
} else {
maps.Copy(svcAnnotations, sc.Annotations)
}
if oldService != nil {
_, hasLastCleanedUpRingHash := oldService.Annotations[naming.LastCleanedUpTokenRingHashAnnotation]
currentTokenRingHash, hasCurrentRingHash := oldService.Annotations[naming.CurrentTokenRingHashAnnotation]
if !hasLastCleanedUpRingHash && hasCurrentRingHash {
svcAnnotations[naming.LastCleanedUpTokenRingHashAnnotation] = currentTokenRingHash
}
}
cleanupJob, ok := jobs[naming.CleanupJobForService(name)]
if ok {
if len(cleanupJob.Annotations[naming.CleanupJobTokenRingHashAnnotation]) != 0 && cleanupJob.Status.CompletionTime != nil {
svcAnnotations[naming.LastCleanedUpTokenRingHashAnnotation] = cleanupJob.Annotations[naming.CleanupJobTokenRingHashAnnotation]
}
}
svc := &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: sc.Namespace,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(sc, scyllaClusterControllerGVK),
},
Labels: svcLabels,
Annotations: svcAnnotations,
},
Spec: corev1.ServiceSpec{
Type: corev1.ServiceTypeClusterIP,
Selector: naming.StatefulSetPodLabel(name),
Ports: servicePorts(sc),
PublishNotReadyAddresses: true,
},
}
if sc.Spec.ExposeOptions != nil && sc.Spec.ExposeOptions.NodeService != nil {
ns := sc.Spec.ExposeOptions.NodeService
switch ns.Type {
case scyllav1.NodeServiceTypeClusterIP:
svc.Spec.Type = corev1.ServiceTypeClusterIP
case scyllav1.NodeServiceTypeLoadBalancer:
svc.Spec.Type = corev1.ServiceTypeLoadBalancer
case scyllav1.NodeServiceTypeHeadless:
svc.Spec.Type = corev1.ServiceTypeClusterIP
svc.Spec.ClusterIP = corev1.ClusterIPNone
default:
return nil, fmt.Errorf("unsupported node service type %q", ns.Type)
}
svc.Annotations = helpers.MergeMaps(svcAnnotations, ns.Annotations)
svc.Spec.InternalTrafficPolicy = copyReferencedValue(ns.InternalTrafficPolicy)
svc.Spec.AllocateLoadBalancerNodePorts = copyReferencedValue(ns.AllocateLoadBalancerNodePorts)
svc.Spec.LoadBalancerClass = copyReferencedValue(ns.LoadBalancerClass)
svc.Spec.ExternalTrafficPolicy = getValueOrDefault(ns.ExternalTrafficPolicy, "")
}
return svc, nil
}
func servicePorts(cluster *scyllav1.ScyllaCluster) []corev1.ServicePort {
ports := []corev1.ServicePort{
{
Name: "inter-node-communication",
Port: 7000,
},
{
Name: "ssl-inter-node-communication",
Port: 7001,
},
{
Name: portNameCQL,
Port: 9042,
},
{
Name: portNameCQLSSL,
Port: 9142,
},
{
Name: portNameCQLShardAware,
Port: 19042,
},
{
Name: portNameCQLSSLShardAware,
Port: 19142,
},
{
Name: "jmx-monitoring",
Port: 7199,
},
{
Name: "agent-api",
Port: 10001,
},
{
Name: "prometheus",
Port: 9180,
},
{
Name: "agent-prometheus",
Port: 5090,
},
{
Name: "node-exporter",
Port: 9100,
},
{
Name: portNameThrift,
Port: 9160,
},
}
if cluster.Spec.Alternator != nil {
ports = append(ports, corev1.ServicePort{
Name: alternatorTLSPortName,
Port: alternatorTLSPort,
})
enableHTTP := cluster.Spec.Alternator.InsecureEnableHTTP
if cluster.Spec.Alternator.Port != 0 || (enableHTTP != nil && *enableHTTP) {
insecurePort := int32(alternatorInsecurePort)
if cluster.Spec.Alternator.Port != 0 {
insecurePort = cluster.Spec.Alternator.Port
}
ports = append(ports, corev1.ServicePort{
Name: alternatorInsecurePortName,
Port: insecurePort,
})
}
}
return ports
}
// StatefulSetForRack make a StatefulSet for the rack.
// existingSts may be nil if it doesn't exist yet.
func StatefulSetForRack(r scyllav1.RackSpec, c *scyllav1.ScyllaCluster, existingSts *appsv1.StatefulSet, sidecarImage string, rackOrdinal int, inputsHash string) (*appsv1.StatefulSet, error) {
selectorLabels, err := naming.RackSelectorLabels(r, c)
if err != nil {
return nil, fmt.Errorf("can't get selector labels: %w", err)
}
requiredLabels := map[string]string{}
requiredLabels[naming.RackOrdinalLabel] = strconv.Itoa(rackOrdinal)
requiredLabels[naming.ScyllaVersionLabel] = c.Spec.Version
maps.Copy(requiredLabels, selectorLabels)
rackLabels := map[string]string{}
maps.Copy(rackLabels, c.Labels)
maps.Copy(rackLabels, requiredLabels)
rackTemplateLabels := map[string]string{}
if c.Spec.PodMetadata != nil && c.Spec.PodMetadata.Labels != nil {
maps.Copy(rackTemplateLabels, c.Spec.PodMetadata.Labels)
} else {
maps.Copy(rackTemplateLabels, c.Labels)
}
maps.Copy(rackTemplateLabels, requiredLabels)
rackAnnotations := map[string]string{}
maps.Copy(rackAnnotations, c.Annotations)
rackTemplateAnnotations := map[string]string{}
if c.Spec.PodMetadata != nil && c.Spec.PodMetadata.Annotations != nil {
maps.Copy(rackTemplateAnnotations, c.Spec.PodMetadata.Annotations)
} else {
maps.Copy(rackTemplateAnnotations, c.Annotations)
}
rackTemplateAnnotations[naming.PrometheusScrapeAnnotation] = naming.LabelValueTrue
rackTemplateAnnotations[naming.PrometheusPortAnnotation] = "9180"
rackTemplateAnnotations[naming.InputsHashAnnotation] = inputsHash
// VolumeClaims are not allowed to be edited by StatufulSet validation,
// which means we have to keep them static.
// ScyllaClusters forbid rack storage changes, but we have to be careful
// when defaulting the values from other places.
var existingDataPVCTemplate *corev1.PersistentVolumeClaim
if existingSts != nil {
pvc, _, ok := slices.Find(existingSts.Spec.VolumeClaimTemplates, func(pvc corev1.PersistentVolumeClaim) bool {
return pvc.Name == naming.PVCTemplateName
})
if !ok {
return nil, fmt.Errorf("can't find data PVC template %q in existing %q StatefulSet spec", naming.PVCTemplateName, naming.ObjRef(existingSts))
}
existingDataPVCTemplate = &pvc
}
dataVolumeClaimLabels := map[string]string{}
if r.Storage.Metadata != nil && r.Storage.Metadata.Labels != nil {
maps.Copy(dataVolumeClaimLabels, r.Storage.Metadata.Labels)
} else if existingSts == nil {
maps.Copy(dataVolumeClaimLabels, c.Labels)
} else {
if existingDataPVCTemplate == nil {
return nil, fmt.Errorf("data PVC template %q in existing %q StatefulSet spec is missing", naming.PVCTemplateName, naming.ObjRef(existingSts))
}
maps.Copy(dataVolumeClaimLabels, existingDataPVCTemplate.Labels)
}
maps.Copy(dataVolumeClaimLabels, selectorLabels)
dataVolumeClaimAnnotations := map[string]string{}
if r.Storage.Metadata != nil && r.Storage.Metadata.Annotations != nil {
maps.Copy(dataVolumeClaimAnnotations, r.Storage.Metadata.Annotations)
} else if existingSts == nil {
maps.Copy(dataVolumeClaimAnnotations, c.Annotations)
} else {
if existingDataPVCTemplate == nil {
return nil, fmt.Errorf("data PVC template %q in existing %q StatefulSet spec is missing", naming.PVCTemplateName, naming.ObjRef(existingSts))
}
maps.Copy(dataVolumeClaimAnnotations, existingDataPVCTemplate.Annotations)
}
placement := r.Placement
if placement == nil {
placement = &scyllav1.PlacementSpec{}
}
opt := true
storageCapacity, err := resource.ParseQuantity(r.Storage.Capacity)
if err != nil {
return nil, fmt.Errorf("cannot parse %q: %v", r.Storage.Capacity, err)
}
// Assume kube-proxy notices readiness change and reconcile Endpoints within this period
kubeProxyEndpointsSyncPeriodSeconds := 5
loadBalancerSyncPeriodSeconds := 60
readinessFailureThreshold := 1
readinessPeriodSeconds := 10
minReadySeconds := kubeProxyEndpointsSyncPeriodSeconds
minTerminationGracePeriodSeconds := readinessFailureThreshold*readinessPeriodSeconds + kubeProxyEndpointsSyncPeriodSeconds
if c.Spec.ExposeOptions != nil && c.Spec.ExposeOptions.NodeService != nil && c.Spec.ExposeOptions.NodeService.Type == scyllav1.NodeServiceTypeLoadBalancer {
// Any "upstream" Load Balancer should notice Endpoint readiness change within this period.
minTerminationGracePeriodSeconds = loadBalancerSyncPeriodSeconds
minReadySeconds = loadBalancerSyncPeriodSeconds
}
if c.Spec.MinTerminationGracePeriodSeconds != nil {
minTerminationGracePeriodSeconds = int(*c.Spec.MinTerminationGracePeriodSeconds)
}
if c.Spec.MinReadySeconds != nil {
minReadySeconds = int(*c.Spec.MinReadySeconds)
}
sts := &appsv1.StatefulSet{
ObjectMeta: metav1.ObjectMeta{
Name: naming.StatefulSetNameForRack(r, c),
Namespace: c.Namespace,
Labels: rackLabels,
Annotations: rackAnnotations,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(c, scyllaClusterControllerGVK),
},
},
Spec: appsv1.StatefulSetSpec{
Replicas: pointer.Ptr(r.Members),
// Use a common Headless Service for all StatefulSets
ServiceName: naming.IdentityServiceName(c),
Selector: &metav1.LabelSelector{
MatchLabels: selectorLabels,
},
PodManagementPolicy: appsv1.OrderedReadyPodManagement,
UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
Type: appsv1.RollingUpdateStatefulSetStrategyType,
RollingUpdate: &appsv1.RollingUpdateStatefulSetStrategy{
Partition: pointer.Ptr(int32(0)),
},
},
MinReadySeconds: int32(minReadySeconds),
// Template for Pods
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: rackTemplateLabels,
Annotations: rackTemplateAnnotations,
},
Spec: corev1.PodSpec{
HostNetwork: c.Spec.Network.HostNetworking,
DNSPolicy: c.Spec.Network.GetDNSPolicy(),
SecurityContext: &corev1.PodSecurityContext{
RunAsUser: pointer.Ptr(rootUID),
RunAsGroup: pointer.Ptr(rootGID),
},
ReadinessGates: c.Spec.ReadinessGates,
Volumes: func() []corev1.Volume {
volumes := []corev1.Volume{
{
Name: "shared",
VolumeSource: corev1.VolumeSource{
EmptyDir: &corev1.EmptyDirVolumeSource{},
},
},
{
Name: "scylla-config-volume",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: stringOrDefault(r.ScyllaConfig, "scylla-config"),
},
Optional: &opt,
},
},
},
{
Name: "scylladb-managed-config",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: naming.GetScyllaDBManagedConfigCMName(c.Name),
},
Optional: pointer.Ptr(false),
},
},
},
{
Name: scyllaAgentConfigVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: stringOrDefault(r.ScyllaAgentConfig, "scylla-agent-config-secret"),
Optional: &opt,
},
},
},
{
Name: "scylla-client-config-volume",
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: "scylla-client-config-secret",
Optional: &opt,
},
},
},
{
Name: scyllaAgentAuthTokenVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: naming.AgentAuthTokenSecretName(c.Name),
},
},
},
}
if utilfeature.DefaultMutableFeatureGate.Enabled(features.AutomaticTLSCertificates) {
volumes = append(volumes, []corev1.Volume{
{
Name: scylladbServingCertsVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: naming.GetScyllaClusterLocalServingCertName(c.Name),
},
},
},
{
Name: scylladbClientCAVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: naming.GetScyllaClusterLocalClientCAName(c.Name),
},
},
},
{
Name: scylladbUserAdminVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: naming.GetScyllaClusterLocalUserAdminCertName(c.Name),
},
},
},
}...)
}
if c.Spec.Alternator != nil {
volumes = append(volumes, corev1.Volume{
Name: scylladbAlternatorServingCertsVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: naming.GetScyllaClusterAlternatorLocalServingCertName(c.Name),
Optional: pointer.Ptr(false),
},
},
})
}
return volumes
}(),
Tolerations: placement.Tolerations,
InitContainers: []corev1.Container{
{
Name: naming.SidecarInjectorContainerName,
Image: sidecarImage,
ImagePullPolicy: corev1.PullIfNotPresent,
Command: []string{
"/bin/sh",
"-c",
fmt.Sprintf("cp -a /usr/bin/scylla-operator %s", naming.SharedDirName),
},
Resources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("50Mi"),
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("50Mi"),
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: "shared",
MountPath: naming.SharedDirName,
ReadOnly: false,
},
},
},
},
Containers: []corev1.Container{
{
Name: naming.ScyllaContainerName,
Image: ImageForCluster(c),
ImagePullPolicy: corev1.PullIfNotPresent,
Ports: containerPorts(c),
// TODO: unprivileged entrypoint
Command: func() []string {
cmd := []string{
path.Join(naming.SharedDirName, "scylla-operator"),
"sidecar",
fmt.Sprintf("--feature-gates=%s", func() string {
features := utilfeature.DefaultMutableFeatureGate.GetAll()
res := make([]string, 0, len(features))
for name := range features {
res = append(res, fmt.Sprintf("%s=%t", name, utilfeature.DefaultMutableFeatureGate.Enabled(name)))
}
sort.Strings(res)
return strings.Join(res, ",")
}()),
fmt.Sprintf("--nodes-broadcast-address-type=%s", func() scyllav1.BroadcastAddressType {
if c.Spec.ExposeOptions != nil && c.Spec.ExposeOptions.BroadcastOptions != nil {
return c.Spec.ExposeOptions.BroadcastOptions.Nodes.Type
}
return scyllav1.BroadcastAddressTypeServiceClusterIP
}()),
fmt.Sprintf("--clients-broadcast-address-type=%s", func() scyllav1.BroadcastAddressType {
if c.Spec.ExposeOptions != nil && c.Spec.ExposeOptions.BroadcastOptions != nil {
return c.Spec.ExposeOptions.BroadcastOptions.Clients.Type
}
return scyllav1.BroadcastAddressTypeServiceClusterIP
}()),
"--service-name=$(SERVICE_NAME)",
"--cpu-count=$(CPU_COUNT)",
// TODO: make it configurable
"--loglevel=2",
}
if len(c.Spec.ExternalSeeds) > 0 {
cmd = append(cmd, fmt.Sprintf("--external-seeds=%s", strings.Join(c.Spec.ExternalSeeds, ",")))
}
return cmd
}(),
Env: []corev1.EnvVar{
{
Name: "SERVICE_NAME",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "metadata.name",
},
},
},
{
Name: "CPU_COUNT",
ValueFrom: &corev1.EnvVarSource{
ResourceFieldRef: &corev1.ResourceFieldSelector{
ContainerName: naming.ScyllaContainerName,
Resource: "limits.cpu",
Divisor: resource.MustParse("1"),
},
},
},
},
Resources: r.Resources,
VolumeMounts: func() []corev1.VolumeMount {
mounts := []corev1.VolumeMount{
{
Name: naming.PVCTemplateName,
MountPath: naming.DataDir,
},
{
Name: "shared",
MountPath: naming.SharedDirName,
ReadOnly: true,
},
{
Name: "scylla-config-volume",
MountPath: naming.ScyllaConfigDirName,
ReadOnly: true,
},
{
Name: "scylladb-managed-config",
MountPath: naming.ScyllaDBManagedConfigDir,
ReadOnly: true,
},
{
Name: "scylla-client-config-volume",
MountPath: naming.ScyllaClientConfigDirName,
ReadOnly: true,
},
}
if utilfeature.DefaultMutableFeatureGate.Enabled(features.AutomaticTLSCertificates) {
mounts = append(mounts, []corev1.VolumeMount{
{
Name: scylladbServingCertsVolumeName,
MountPath: "/var/run/secrets/scylla-operator.scylladb.com/scylladb/serving-certs",
ReadOnly: true,
},
{
Name: scylladbClientCAVolumeName,
MountPath: "/var/run/secrets/scylla-operator.scylladb.com/scylladb/client-ca",
ReadOnly: true,
},
{
Name: scylladbUserAdminVolumeName,
MountPath: "/var/run/secrets/scylla-operator.scylladb.com/scylladb/user-admin",
ReadOnly: true,
},
}...)
}
if c.Spec.Alternator != nil {
mounts = append(mounts, corev1.VolumeMount{
Name: scylladbAlternatorServingCertsVolumeName,
MountPath: "/var/run/secrets/scylla-operator.scylladb.com/scylladb/alternator-serving-certs",
ReadOnly: true,
})
}
return mounts
}(),
// Add CAP_SYS_NICE as instructed by scylla logs
SecurityContext: &corev1.SecurityContext{
RunAsUser: pointer.Ptr(rootUID),
RunAsGroup: pointer.Ptr(rootGID),
Capabilities: &corev1.Capabilities{
Add: []corev1.Capability{"SYS_NICE"},
},
},
StartupProbe: &corev1.Probe{
// Initial delay should be big, because scylla runs benchmarks
// to tune the IO settings.
// TODO: Lower the timeout when we fix probes. We have temporarily changed them from 5s
// to 30s to survive cluster overload.
// Relevant issue: https://github.com/scylladb/scylla-operator/issues/844
TimeoutSeconds: int32(30),
FailureThreshold: int32(40),
PeriodSeconds: int32(10),
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Port: intstr.FromInt(naming.ScyllaDBAPIStatusProbePort),
Path: naming.LivenessProbePath,
},
},
},
LivenessProbe: &corev1.Probe{
// TODO: Lower the timeout when we fix probes. Currently we need them raised
// because scylla doesn't respond under load. (#844)
TimeoutSeconds: int32(10),
FailureThreshold: int32(12),
PeriodSeconds: int32(10),
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Port: intstr.FromInt(naming.ScyllaDBAPIStatusProbePort),
Path: naming.LivenessProbePath,
},
},
},
ReadinessProbe: &corev1.Probe{
// TODO: Lower the timeout when we fix probes. We have temporarily changed them from 5s
// to 30s to survive cluster overload.
// Relevant issue: https://github.com/scylladb/scylla-operator/issues/844
TimeoutSeconds: int32(30),
FailureThreshold: int32(readinessFailureThreshold),
PeriodSeconds: int32(readinessPeriodSeconds),
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Port: intstr.FromInt(naming.ScyllaDBAPIStatusProbePort),
Path: naming.ReadinessProbePath,
},
},
},
// Before a Scylla Pod is stopped, execute nodetool drain to
// flush the memtable to disk, finish existing requests and stop listening for connections.
// Sleep is required to give chance to Load Balancers to acknowledge Pod going down with their
// probes.
Lifecycle: &corev1.Lifecycle{
PreStop: &corev1.LifecycleHandler{
Exec: &corev1.ExecAction{
Command: []string{
"/usr/bin/bash",
"-euExo",
"pipefail",
"-O",
"inherit_errexit",
"-c",
fmt.Sprintf("nodetool drain & sleep %d & wait", minTerminationGracePeriodSeconds),
},
},
},
},
},
{
// ScyllaDB doesn't provide readiness or liveness probe,
// so we use our own probe sidecar to expose such endpoints.
Name: "scylladb-api-status-probe",
Image: sidecarImage,
ImagePullPolicy: corev1.PullIfNotPresent,
Command: []string{
"/usr/bin/scylla-operator",
"serve-probes",
"scylladb-api-status",
fmt.Sprintf("--port=%d", naming.ScyllaDBAPIStatusProbePort),
"--service-name=$(SERVICE_NAME)",
"--loglevel=2",
},
Env: []corev1.EnvVar{
{
Name: "SERVICE_NAME",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "metadata.name",
},
},
},
},
ReadinessProbe: &corev1.Probe{
TimeoutSeconds: int32(30),
FailureThreshold: int32(1),
PeriodSeconds: int32(5),
ProbeHandler: corev1.ProbeHandler{
TCPSocket: &corev1.TCPSocketAction{
Port: intstr.FromInt32(naming.ScyllaDBAPIStatusProbePort),
},
},
},
Resources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("40Mi"),
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("40Mi"),
},
},
},
},
ServiceAccountName: naming.MemberServiceAccountNameForScyllaCluster(c.Name),
Affinity: &corev1.Affinity{
NodeAffinity: placement.NodeAffinity,
PodAffinity: placement.PodAffinity,
PodAntiAffinity: placement.PodAntiAffinity,
},
ImagePullSecrets: c.Spec.ImagePullSecrets,
TerminationGracePeriodSeconds: pointer.Ptr(int64(900)),
},
},
VolumeClaimTemplates: []corev1.PersistentVolumeClaim{
{
ObjectMeta: metav1.ObjectMeta{
Name: naming.PVCTemplateName,
Labels: dataVolumeClaimLabels,
Annotations: dataVolumeClaimAnnotations,
},
Spec: corev1.PersistentVolumeClaimSpec{
AccessModes: []corev1.PersistentVolumeAccessMode{corev1.ReadWriteOnce},
StorageClassName: r.Storage.StorageClassName,
Resources: corev1.VolumeResourceRequirements{
Requests: corev1.ResourceList{
corev1.ResourceStorage: storageCapacity,
},
},
},
},
},
},
}
if len(c.Spec.ForceRedeploymentReason) != 0 {
sts.Spec.Template.Annotations[naming.ForceRedeploymentReasonAnnotation] = c.Spec.ForceRedeploymentReason
}
if existingSts != nil {
sts.ResourceVersion = existingSts.ResourceVersion
if sts.Spec.UpdateStrategy.Type == appsv1.RollingUpdateStatefulSetStrategyType &&
existingSts.Spec.UpdateStrategy.Type == appsv1.RollingUpdateStatefulSetStrategyType &&
existingSts.Spec.UpdateStrategy.RollingUpdate != nil &&
existingSts.Spec.UpdateStrategy.RollingUpdate.Partition != nil {
*sts.Spec.UpdateStrategy.RollingUpdate.Partition = *existingSts.Spec.UpdateStrategy.RollingUpdate.Partition
}
}
// Make sure we adjust if it was scaled in between.
if *sts.Spec.UpdateStrategy.RollingUpdate.Partition > *sts.Spec.Replicas {
sts.Spec.UpdateStrategy.RollingUpdate.Partition = pointer.Ptr(*sts.Spec.Replicas)
}
sysctlContainer := sysctlInitContainer(c.Spec.Sysctls, sidecarImage)
if sysctlContainer != nil {
sts.Spec.Template.Spec.InitContainers = append(sts.Spec.Template.Spec.InitContainers, *sysctlContainer)
}
for _, VolumeMount := range r.VolumeMounts {
sts.Spec.Template.Spec.Containers[0].VolumeMounts = append(
sts.Spec.Template.Spec.Containers[0].VolumeMounts, *VolumeMount.DeepCopy())
}
for _, Volume := range r.Volumes {
sts.Spec.Template.Spec.Volumes = append(
sts.Spec.Template.Spec.Volumes, *Volume.DeepCopy())
}
sts.Spec.Template.Spec.Containers = append(sts.Spec.Template.Spec.Containers, agentContainer(r, c))
return sts, nil
}
func containerPorts(c *scyllav1.ScyllaCluster) []corev1.ContainerPort {
ports := []corev1.ContainerPort{
{
Name: "intra-node",
ContainerPort: 7000,
},
{
Name: "tls-intra-node",
ContainerPort: 7001,
},
{
Name: "cql",
ContainerPort: 9042,
},
{
Name: "cql-ssl",
ContainerPort: 9142,
},
{
Name: "jmx",
ContainerPort: 7199,
},
{
Name: "prometheus",
ContainerPort: 9180,
},
{
Name: "node-exporter",
ContainerPort: 9100,
},
{
Name: "thrift",
ContainerPort: 9160,
},
}
if c.Spec.Alternator != nil {
ports = append(ports, corev1.ContainerPort{
Name: alternatorTLSPortName,
ContainerPort: alternatorTLSPort,
})
enableHTTP := c.Spec.Alternator.InsecureEnableHTTP
if c.Spec.Alternator.Port != 0 || (enableHTTP != nil && *enableHTTP) {
insecurePort := int32(alternatorInsecurePort)
if c.Spec.Alternator.Port != 0 {
insecurePort = c.Spec.Alternator.Port
}
ports = append(ports, corev1.ContainerPort{
Name: alternatorInsecurePortName,
ContainerPort: insecurePort,
})
}
}
return ports
}
func sysctlInitContainer(sysctls []string, image string) *corev1.Container {
if len(sysctls) == 0 {
return nil
}
opt := true
return &corev1.Container{
Name: "sysctl-buddy",
Image: image,
ImagePullPolicy: corev1.PullIfNotPresent,
SecurityContext: &corev1.SecurityContext{
Privileged: &opt,
},
Resources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("50Mi"),
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10m"),
corev1.ResourceMemory: resource.MustParse("50Mi"),
},
},
Command: []string{
"/bin/sh",
"-c",
fmt.Sprintf("sysctl -w %s", strings.Join(sysctls, " ")),
},
}
}
func agentContainer(r scyllav1.RackSpec, c *scyllav1.ScyllaCluster) corev1.Container {
cnt := corev1.Container{
Name: "scylla-manager-agent",
Image: agentImageForCluster(c),
ImagePullPolicy: corev1.PullIfNotPresent,
Args: []string{
"-c",
naming.ScyllaAgentConfigDefaultFile,
"-c",
path.Join(naming.ScyllaAgentConfigDirName, naming.ScyllaAgentConfigFileName),
"-c",
path.Join(naming.ScyllaAgentConfigDirName, naming.ScyllaAgentAuthTokenFileName),
},
Ports: []corev1.ContainerPort{
{
Name: "agent-rest-api",
ContainerPort: 10001,
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: naming.PVCTemplateName,
MountPath: naming.DataDir,
},
{
Name: scyllaAgentConfigVolumeName,
MountPath: path.Join(naming.ScyllaAgentConfigDirName, naming.ScyllaAgentConfigFileName),
SubPath: naming.ScyllaAgentConfigFileName,
ReadOnly: true,
},
{
Name: scyllaAgentAuthTokenVolumeName,
MountPath: path.Join(naming.ScyllaAgentConfigDirName, naming.ScyllaAgentAuthTokenFileName),
SubPath: naming.ScyllaAgentAuthTokenFileName,
ReadOnly: true,
},
},
Resources: r.AgentResources,
}
for _, vm := range r.AgentVolumeMounts {
cnt.VolumeMounts = append(cnt.VolumeMounts, *vm.DeepCopy())
}
return cnt
}
func MakePodDisruptionBudget(c *scyllav1.ScyllaCluster) *policyv1.PodDisruptionBudget {
maxUnavailable := intstr.FromInt(1)
selectorLabels := naming.ClusterLabels(c)
labels := map[string]string{}
maps.Copy(labels, c.Labels)
maps.Copy(labels, selectorLabels)
return &policyv1.PodDisruptionBudget{
ObjectMeta: metav1.ObjectMeta{
Name: naming.PodDisruptionBudgetName(c),
Namespace: c.Namespace,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(c, scyllaClusterControllerGVK),
},
Labels: labels,
Annotations: maps.Clone(c.Annotations),
},
Spec: policyv1.PodDisruptionBudgetSpec{
MaxUnavailable: &maxUnavailable,
Selector: metav1.SetAsLabelSelector(selectorLabels),
},