forked from rook/rook
Travis Nielsen
87e2b09453
Some log messages indicate when the upgrade checks will be performed. If the Ceph image hasn't changed, the upgrade checks are skipped. The messages were confusing if running a Rook upgrade. Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
365 lines
12 KiB
Go
365 lines
12 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package mon
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import (
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"fmt"
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"os"
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"path"
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cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
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rook "github.com/rook/rook/pkg/apis/rook.io/v1alpha2"
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"github.com/rook/rook/pkg/clusterd"
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"github.com/rook/rook/pkg/daemon/ceph/client"
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"github.com/rook/rook/pkg/operator/ceph/config"
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opspec "github.com/rook/rook/pkg/operator/ceph/spec"
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cephver "github.com/rook/rook/pkg/operator/ceph/version"
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"github.com/rook/rook/pkg/operator/k8sutil"
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apps "k8s.io/api/apps/v1"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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// Full path of command used to invoke the monmap tool
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monmaptoolCommand = "/usr/bin/monmaptool"
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// Full path of the command used to invoke the Ceph mon daemon
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cephMonCommand = "ceph-mon"
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monmapFile = "monmap"
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)
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func (c *Cluster) getLabels(daemonName string) map[string]string {
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// Mons have a service for each mon, so the additional pod data is relevant for its services
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// Use pod labels to keep "mon: id" for legacy
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labels := opspec.PodLabels(AppName, c.Namespace, "mon", daemonName)
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// Add "mon_cluster: <namespace>" for legacy
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labels[monClusterAttr] = c.Namespace
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return labels
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}
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func (c *Cluster) makeDeployment(monConfig *monConfig) *apps.Deployment {
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d := &apps.Deployment{
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ObjectMeta: metav1.ObjectMeta{
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Name: monConfig.ResourceName,
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Namespace: c.Namespace,
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Labels: c.getLabels(monConfig.DaemonName),
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},
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}
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k8sutil.AddRookVersionLabelToDeployment(d)
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cephv1.GetMonAnnotations(c.spec.Annotations).ApplyToObjectMeta(&d.ObjectMeta)
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opspec.AddCephVersionLabelToDeployment(c.ClusterInfo.CephVersion, d)
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k8sutil.SetOwnerRef(&d.ObjectMeta, &c.ownerRef)
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pod := c.makeMonPod(monConfig)
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replicaCount := int32(1)
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d.Spec = apps.DeploymentSpec{
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Selector: &metav1.LabelSelector{
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MatchLabels: c.getLabels(monConfig.DaemonName),
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},
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Template: v1.PodTemplateSpec{
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ObjectMeta: pod.ObjectMeta,
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Spec: pod.Spec,
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},
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Replicas: &replicaCount,
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Strategy: apps.DeploymentStrategy{
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Type: apps.RecreateDeploymentStrategyType,
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},
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}
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return d
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}
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func (c *Cluster) makeDeploymentPVC(m *monConfig) (*v1.PersistentVolumeClaim, error) {
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template := c.spec.Mon.VolumeClaimTemplate
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volumeMode := v1.PersistentVolumeFilesystem
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pvc := &v1.PersistentVolumeClaim{
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ObjectMeta: metav1.ObjectMeta{
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Name: m.ResourceName,
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Namespace: c.Namespace,
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Labels: c.getLabels(m.DaemonName),
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},
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Spec: v1.PersistentVolumeClaimSpec{
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AccessModes: []v1.PersistentVolumeAccessMode{
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v1.ReadWriteOnce,
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},
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Resources: template.Spec.Resources,
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StorageClassName: template.Spec.StorageClassName,
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VolumeMode: &volumeMode,
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},
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}
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k8sutil.AddRookVersionLabelToObjectMeta(&pvc.ObjectMeta)
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cephv1.GetMonAnnotations(c.spec.Annotations).ApplyToObjectMeta(&pvc.ObjectMeta)
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opspec.AddCephVersionLabelToObjectMeta(c.ClusterInfo.CephVersion, &pvc.ObjectMeta)
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k8sutil.SetOwnerRef(&pvc.ObjectMeta, &c.ownerRef)
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// k8s uses limit as the resource request fallback
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if _, ok := pvc.Spec.Resources.Limits[v1.ResourceStorage]; ok {
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return pvc, nil
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}
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// specific request in the crd
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if _, ok := pvc.Spec.Resources.Requests[v1.ResourceStorage]; ok {
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return pvc, nil
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}
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req, err := resource.ParseQuantity(cephMonDefaultStorageRequest)
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if err != nil {
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return nil, err
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}
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if pvc.Spec.Resources.Requests == nil {
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pvc.Spec.Resources.Requests = v1.ResourceList{}
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}
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pvc.Spec.Resources.Requests[v1.ResourceStorage] = req
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return pvc, nil
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}
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/*
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* Pod spec
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*/
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func (c *Cluster) setPodPlacement(pod *v1.PodSpec, p rook.Placement, nodeSelector map[string]string) {
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p.ApplyToPodSpec(pod)
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pod.NodeSelector = nodeSelector
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// when a node selector is being used, skip the affinity business below
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if nodeSelector != nil {
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return
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}
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// label selector for monitors used in anti-affinity rules
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monAntiAffinity := v1.PodAffinityTerm{
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LabelSelector: &metav1.LabelSelector{
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MatchLabels: map[string]string{
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k8sutil.AppAttr: AppName,
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},
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},
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TopologyKey: v1.LabelHostname,
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}
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// set monitor pod anti-affinity rules. when monitors should never be
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// co-located (e.g. not AllowMultiplePerHost or HostNetworking) then the
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// anti-affinity rule is made to be required during scheduling, otherwise it
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// is merely a preferred policy.
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//
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// ApplyToPodSpec ensures that pod.Affinity is non-nil
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if pod.Affinity.PodAntiAffinity == nil {
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pod.Affinity.PodAntiAffinity = &v1.PodAntiAffinity{}
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}
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paa := pod.Affinity.PodAntiAffinity
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if c.Network.IsHost() || !c.spec.Mon.AllowMultiplePerNode {
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paa.RequiredDuringSchedulingIgnoredDuringExecution =
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append(paa.RequiredDuringSchedulingIgnoredDuringExecution, monAntiAffinity)
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} else {
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paa.PreferredDuringSchedulingIgnoredDuringExecution =
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append(paa.PreferredDuringSchedulingIgnoredDuringExecution, v1.WeightedPodAffinityTerm{
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Weight: 50,
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PodAffinityTerm: monAntiAffinity,
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})
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}
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}
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func (c *Cluster) makeMonPod(monConfig *monConfig) *v1.Pod {
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logger.Debugf("monConfig: %+v", monConfig)
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podSpec := v1.PodSpec{
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InitContainers: []v1.Container{
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c.makeChownInitContainer(monConfig),
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c.makeMonFSInitContainer(monConfig),
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},
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Containers: []v1.Container{
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c.makeMonDaemonContainer(monConfig),
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},
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RestartPolicy: v1.RestartPolicyAlways,
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// we decide later whether to use a PVC volume or host volumes for mons, so only populate
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// the base volumes at this point.
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Volumes: opspec.DaemonVolumesBase(monConfig.DataPathMap, keyringStoreName),
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HostNetwork: c.Network.IsHost(),
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PriorityClassName: cephv1.GetMonPriorityClassName(c.spec.PriorityClassNames),
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}
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if c.Network.IsHost() {
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podSpec.DNSPolicy = v1.DNSClusterFirstWithHostNet
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}
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: monConfig.ResourceName,
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Namespace: c.Namespace,
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Labels: c.getLabels(monConfig.DaemonName),
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},
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Spec: podSpec,
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}
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cephv1.GetMonAnnotations(c.spec.Annotations).ApplyToObjectMeta(&pod.ObjectMeta)
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return pod
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}
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/*
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* Container specs
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*/
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// Init and daemon containers require the same context, so we call it 'pod' context
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// PodSecurityContext detects if the pod needs privileges to run
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func PodSecurityContext() *v1.SecurityContext {
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privileged := false
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if os.Getenv("ROOK_HOSTPATH_REQUIRES_PRIVILEGED") == "true" {
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privileged = true
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}
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return &v1.SecurityContext{
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Privileged: &privileged,
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}
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}
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func (c *Cluster) makeChownInitContainer(monConfig *monConfig) v1.Container {
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return opspec.ChownCephDataDirsInitContainer(
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*monConfig.DataPathMap,
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c.spec.CephVersion.Image,
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opspec.DaemonVolumeMounts(monConfig.DataPathMap, keyringStoreName),
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cephv1.GetMonResources(c.spec.Resources),
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PodSecurityContext(),
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)
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}
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func (c *Cluster) makeMonFSInitContainer(monConfig *monConfig) v1.Container {
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return v1.Container{
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Name: "init-mon-fs",
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Command: []string{
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cephMonCommand,
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},
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Args: append(
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opspec.DaemonFlags(c.ClusterInfo, monConfig.DaemonName),
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// needed so we can generate an initial monmap
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// otherwise the mkfs will say: "0 no local addrs match monmap"
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config.NewFlag("public-addr", monConfig.PublicIP),
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"--mkfs",
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),
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Image: c.spec.CephVersion.Image,
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VolumeMounts: opspec.DaemonVolumeMounts(monConfig.DataPathMap, keyringStoreName),
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SecurityContext: PodSecurityContext(),
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// filesystem creation does not require ports to be exposed
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Env: opspec.DaemonEnvVars(c.spec.CephVersion.Image),
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Resources: cephv1.GetMonResources(c.spec.Resources),
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}
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}
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func (c *Cluster) makeMonDaemonContainer(monConfig *monConfig) v1.Container {
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podIPEnvVar := "ROOK_POD_IP"
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publicAddr := monConfig.PublicIP
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// Handle the non-default port for host networking. If host networking is not being used,
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// the service created elsewhere will handle the non-default port redirection to the default port inside the container.
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if c.Network.IsHost() && monConfig.Port != DefaultMsgr1Port {
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logger.Warningf("Starting mon %s with host networking on a non-default port %d. The mon must be failed over before enabling msgr2.",
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monConfig.DaemonName, monConfig.Port)
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publicAddr = fmt.Sprintf("%s:%d", publicAddr, monConfig.Port)
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}
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container := v1.Container{
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Name: "mon",
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Command: []string{
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cephMonCommand,
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},
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Args: append(
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opspec.DaemonFlags(c.ClusterInfo, monConfig.DaemonName),
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"--foreground",
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// If the mon is already in the monmap, when the port is left off of --public-addr,
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// it will still advertise on the previous port b/c monmap is saved to mon database.
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config.NewFlag("public-addr", publicAddr),
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// Set '--setuser-match-path' so that existing directory owned by root won't affect the daemon startup.
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// For existing data store owned by root, the daemon will continue to run as root
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//
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// We use 'store.db' here because during an upgrade the init container will set 'ceph:ceph' to monConfig.DataPathMap.ContainerDataDir
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// but inside the permissions will be 'root:root' AND we don't want to chown recursively on the mon data directory
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// We want to avoid potential startup time issue if the store is big
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config.NewFlag("setuser-match-path", path.Join(monConfig.DataPathMap.ContainerDataDir, "store.db")),
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),
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Image: c.spec.CephVersion.Image,
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VolumeMounts: opspec.DaemonVolumeMounts(monConfig.DataPathMap, keyringStoreName),
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SecurityContext: PodSecurityContext(),
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Ports: []v1.ContainerPort{
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{
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Name: "client",
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ContainerPort: monConfig.Port,
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Protocol: v1.ProtocolTCP,
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},
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},
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Env: append(
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opspec.DaemonEnvVars(c.spec.CephVersion.Image),
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k8sutil.PodIPEnvVar(podIPEnvVar),
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),
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Resources: cephv1.GetMonResources(c.spec.Resources),
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}
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// If host networking is enabled, we don't need a bind addr that is different from the public addr
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if !c.Network.IsHost() {
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// Opposite of the above, --public-bind-addr will *not* still advertise on the previous
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// port, which makes sense because this is the pod IP, which changes with every new pod.
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container.Args = append(container.Args,
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config.NewFlag("public-bind-addr", opspec.ContainerEnvVarReference(podIPEnvVar)))
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}
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// If deploying Nautilus and newer we need a new port of the monitor container
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if c.ClusterInfo.CephVersion.IsAtLeastNautilus() {
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addContainerPort(container, "msgr2", 3300)
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}
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return container
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}
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// UpdateCephDeploymentAndWait verifies a deployment can be stopped or continued
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func UpdateCephDeploymentAndWait(context *clusterd.Context, deployment *apps.Deployment, namespace, daemonType, daemonName string, cephVersion cephver.CephVersion, isUpgrade, skipUpgradeChecks bool) error {
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callback := func(action string) error {
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if !isUpgrade {
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logger.Info("this is not a Ceph upgrade, not performing upgrade checks")
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return nil
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}
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// At this point, we are in an upgrade
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if skipUpgradeChecks {
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logger.Warningf("this is a Ceph upgrade, not performing upgrade checks because skipUpgradeChecks is %t", skipUpgradeChecks)
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return nil
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}
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logger.Infof("checking if we can %s the deployment %s", action, deployment.Name)
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if action == "stop" {
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err := client.OkToStop(context, namespace, deployment.Name, daemonType, daemonName, cephVersion)
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if err != nil {
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return fmt.Errorf("failed to check if we can %s the deployment %s: %+v", action, deployment.Name, err)
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}
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}
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if action == "continue" {
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err := client.OkToContinue(context, namespace, deployment.Name, daemonType, daemonName)
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if err != nil {
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return fmt.Errorf("failed to check if we can %s the deployment %s: %+v", action, deployment.Name, err)
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}
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}
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return nil
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}
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_, err := k8sutil.UpdateDeploymentAndWait(context, deployment, namespace, callback)
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return err
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}
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