forked from rook/rook
Sébastien Han
a3068dee0b
Now, the CephBlockPool CRD is managed with the controller-runtime. So the watcher is outside of the main controller reconciliation loop of CephCluster which brings numerous benefit such as: * having its own reconciliation loop * won't block anything from the main CephCluster controller loop * fast than waiting for CephCluster loop to completion Partially close: https://github.com/rook/rook/issues/1981 Signed-off-by: Sébastien Han <seb@redhat.com>
335 lines
10 KiB
Go
335 lines
10 KiB
Go
/*
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Copyright 2018 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 mgr
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"github.com/pkg/errors"
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rookcephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
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rookv1 "github.com/rook/rook/pkg/apis/rook.io/v1"
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"github.com/rook/rook/pkg/daemon/ceph/client"
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"github.com/rook/rook/pkg/operator/ceph/cluster/mon"
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"github.com/rook/rook/pkg/operator/ceph/config"
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"github.com/rook/rook/pkg/operator/ceph/config/keyring"
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"github.com/rook/rook/pkg/operator/ceph/controller"
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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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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/intstr"
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)
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const (
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podIPEnvVar = "ROOK_POD_IP"
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)
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func (c *Cluster) makeDeployment(mgrConfig *mgrConfig) *apps.Deployment {
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logger.Debugf("mgrConfig: %+v", mgrConfig)
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podSpec := v1.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Name: mgrConfig.ResourceName,
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Labels: c.getPodLabels(mgrConfig.DaemonID),
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},
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{
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c.makeChownInitContainer(mgrConfig),
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},
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Containers: []v1.Container{
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c.makeMgrDaemonContainer(mgrConfig),
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},
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ServiceAccountName: serviceAccountName,
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RestartPolicy: v1.RestartPolicyAlways,
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Volumes: controller.DaemonVolumes(mgrConfig.DataPathMap, mgrConfig.ResourceName),
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HostNetwork: c.Network.IsHost(),
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PriorityClassName: c.priorityClassName,
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},
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}
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// Replace default unreachable node toleration
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k8sutil.AddUnreachableNodeToleration(&podSpec.Spec)
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podSpec.Spec.InitContainers = append(podSpec.Spec.InitContainers, []v1.Container{
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c.makeSetServerAddrInitContainer(mgrConfig, "dashboard"),
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c.makeSetServerAddrInitContainer(mgrConfig, "prometheus"),
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}...)
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// ceph config set commands want admin keyring
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podSpec.Spec.Volumes = append(podSpec.Spec.Volumes,
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keyring.Volume().Admin())
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if c.Network.IsHost() {
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podSpec.Spec.DNSPolicy = v1.DNSClusterFirstWithHostNet
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}
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c.annotations.ApplyToObjectMeta(&podSpec.ObjectMeta)
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c.applyPrometheusAnnotations(&podSpec.ObjectMeta)
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c.placement.ApplyToPodSpec(&podSpec.Spec)
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replicas := int32(1)
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d := &apps.Deployment{
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ObjectMeta: metav1.ObjectMeta{
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Name: mgrConfig.ResourceName,
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Namespace: c.Namespace,
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Labels: c.getPodLabels(mgrConfig.DaemonID),
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},
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Spec: apps.DeploymentSpec{
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Selector: &metav1.LabelSelector{
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MatchLabels: c.getPodLabels(mgrConfig.DaemonID),
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},
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Template: podSpec,
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Replicas: &replicas,
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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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}
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k8sutil.AddRookVersionLabelToDeployment(d)
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controller.AddCephVersionLabelToDeployment(c.clusterInfo.CephVersion, d)
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k8sutil.SetOwnerRef(&d.ObjectMeta, &c.ownerRef)
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return d
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}
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// if we do not need the http bind fix, then we need to be careful. if we are
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// upgrading from a cluster that had the fix applied, then the fix is no longer
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// needed, and furthermore, needs to be removed so that there is not a lingering
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// ceph configuration option that contains an old ip. by clearing the option,
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// we let ceph bind to its default ANYADDR address. However, since we don't
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// know which version of Ceph we are may be upgrading _from_ we need to (a)
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// always do this and (b) make sure that all forms of the configuration option
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// are removed (see the init container factory method). Once the minimum
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// supported version of Rook contains the fix, all of this can be removed.
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func (c *Cluster) clearHTTPBindFix() error {
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// We only need to apply these changes once. No harm in once each time the operator restarts.
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if c.appliedHttpBind {
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return nil
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}
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for _, daemonID := range c.getDaemonIDs() {
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for _, module := range []string{"dashboard", "prometheus"} {
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// there are two forms of the configuration key that might exist which
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// depends not on the current version, but on the version that may be
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// the version being upgraded from.
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if _, err := client.MgrSetConfig(c.context, c.Namespace, daemonID,
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fmt.Sprintf("mgr/%s/server_addr", module), "", false); err != nil {
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return errors.Wrapf(err, "failed to set config for an mgr daemon using v2 format.")
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}
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// this is for the format used in v1.0
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// https://github.com/rook/rook/commit/11d318fb2f77a6ac9a8f2b9be42c826d3b4a93c3
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if _, err := client.MgrSetConfig(c.context, c.Namespace, daemonID,
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fmt.Sprintf("mgr/%s/%s/server_addr", module, daemonID), "", false); err != nil {
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return errors.Wrapf(err, "failed to set config for an mgr daemon using v1 format.")
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}
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}
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}
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c.appliedHttpBind = true
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return nil
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}
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func (c *Cluster) makeChownInitContainer(mgrConfig *mgrConfig) v1.Container {
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return controller.ChownCephDataDirsInitContainer(
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*mgrConfig.DataPathMap,
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c.cephVersion.Image,
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controller.DaemonVolumeMounts(mgrConfig.DataPathMap, mgrConfig.ResourceName),
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c.resources,
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mon.PodSecurityContext(),
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)
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}
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func (c *Cluster) makeSetServerAddrInitContainer(mgrConfig *mgrConfig, mgrModule string) v1.Container {
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// Commands produced for various Ceph major versions (differences highlighted)
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// L: config-key set mgr/<mod>/server_addr $(ROOK_CEPH_<MOD>_SERVER_ADDR)
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// M: config set mgr.a mgr/<mod>/server_addr $(ROOK_CEPH_<MOD>_SERVER_ADDR)
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// N: config set mgr.a mgr/<mod>/server_addr $(ROOK_CEPH_<MOD>_SERVER_ADDR) --force
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cfgSetArgs := []string{"config", "set"}
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cfgSetArgs = append(cfgSetArgs, fmt.Sprintf("mgr.%s", mgrConfig.DaemonID))
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cfgPath := fmt.Sprintf("mgr/%s/%s/server_addr", mgrModule, mgrConfig.DaemonID)
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cfgSetArgs = append(cfgSetArgs, cfgPath, controller.ContainerEnvVarReference(podIPEnvVar))
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cfgSetArgs = append(cfgSetArgs, "--force")
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cfgSetArgs = append(cfgSetArgs, "--verbose")
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container := v1.Container{
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Name: "init-set-" + strings.ToLower(mgrModule) + "-server-addr",
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Command: []string{
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"ceph",
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},
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Args: append(
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controller.AdminFlags(c.clusterInfo),
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cfgSetArgs...,
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),
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Image: c.cephVersion.Image,
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VolumeMounts: append(
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controller.DaemonVolumeMounts(mgrConfig.DataPathMap, mgrConfig.ResourceName),
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keyring.VolumeMount().Admin(),
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),
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Env: append(
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append(
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controller.DaemonEnvVars(c.cephVersion.Image),
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k8sutil.PodIPEnvVar(podIPEnvVar),
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),
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c.cephMgrOrchestratorModuleEnvs()...,
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),
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Resources: c.resources,
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}
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return container
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}
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func (c *Cluster) makeMgrDaemonContainer(mgrConfig *mgrConfig) v1.Container {
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container := v1.Container{
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Name: "mgr",
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Command: []string{
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"ceph-mgr",
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},
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Args: append(
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controller.DaemonFlags(c.clusterInfo, mgrConfig.DaemonID),
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// for ceph-mgr cephfs
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// see https://github.com/ceph/ceph-csi/issues/486 for more details
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config.NewFlag("client-mount-uid", "0"),
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config.NewFlag("client-mount-gid", "0"),
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"--foreground",
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),
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Image: c.cephVersion.Image,
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VolumeMounts: controller.DaemonVolumeMounts(mgrConfig.DataPathMap, mgrConfig.ResourceName),
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Ports: []v1.ContainerPort{
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{
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Name: "mgr",
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ContainerPort: int32(6800),
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Protocol: v1.ProtocolTCP,
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},
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{
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Name: "http-metrics",
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ContainerPort: int32(metricsPort),
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Protocol: v1.ProtocolTCP,
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},
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{
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Name: "dashboard",
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ContainerPort: int32(c.dashboardPort()),
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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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controller.DaemonEnvVars(c.cephVersion.Image),
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c.cephMgrOrchestratorModuleEnvs()...,
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),
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Resources: c.resources,
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LivenessProbe: &v1.Probe{
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Handler: v1.Handler{
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HTTPGet: &v1.HTTPGetAction{
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Path: "/",
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Port: intstr.FromInt(metricsPort),
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},
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},
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InitialDelaySeconds: 60,
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},
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SecurityContext: mon.PodSecurityContext(),
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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-addr", controller.ContainerEnvVarReference(podIPEnvVar)))
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}
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return container
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}
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func (c *Cluster) makeMetricsService(name string) *v1.Service {
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labels := controller.AppLabels(AppName, c.Namespace)
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svc := &v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: c.Namespace,
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Labels: labels,
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},
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Spec: v1.ServiceSpec{
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Selector: labels,
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Type: v1.ServiceTypeClusterIP,
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Ports: []v1.ServicePort{
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{
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Name: "http-metrics",
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Port: int32(metricsPort),
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Protocol: v1.ProtocolTCP,
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},
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},
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},
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}
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k8sutil.SetOwnerRef(&svc.ObjectMeta, &c.ownerRef)
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return svc
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}
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func (c *Cluster) makeDashboardService(name string) *v1.Service {
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labels := controller.AppLabels(AppName, c.Namespace)
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portName := "https-dashboard"
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if !c.dashboard.SSL {
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portName = "dashboard"
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}
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svc := &v1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: fmt.Sprintf("%s-dashboard", name),
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Namespace: c.Namespace,
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Labels: labels,
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},
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Spec: v1.ServiceSpec{
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Selector: labels,
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Type: v1.ServiceTypeClusterIP,
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Ports: []v1.ServicePort{
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{
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Name: portName,
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Port: int32(c.dashboardPort()),
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Protocol: v1.ProtocolTCP,
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},
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},
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},
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}
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k8sutil.SetOwnerRef(&svc.ObjectMeta, &c.ownerRef)
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return svc
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}
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func (c *Cluster) getPodLabels(daemonName string) map[string]string {
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labels := controller.PodLabels(AppName, c.Namespace, "mgr", daemonName)
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// leave "instance" key for legacy usage
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labels["instance"] = daemonName
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return labels
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}
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func (c *Cluster) applyPrometheusAnnotations(objectMeta *metav1.ObjectMeta) {
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if len(c.annotations) == 0 {
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t := rookv1.Annotations{
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"prometheus.io/scrape": "true",
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"prometheus.io/port": strconv.Itoa(metricsPort),
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}
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t.ApplyToObjectMeta(objectMeta)
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}
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}
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func (c *Cluster) cephMgrOrchestratorModuleEnvs() []v1.EnvVar {
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operatorNamespace := os.Getenv(k8sutil.PodNamespaceEnvVar)
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envVars := []v1.EnvVar{
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{Name: "ROOK_OPERATOR_NAMESPACE", Value: operatorNamespace},
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{Name: "ROOK_CEPH_CLUSTER_CRD_VERSION", Value: rookcephv1.Version},
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{Name: "ROOK_CEPH_CLUSTER_CRD_NAME", Value: c.clusterInfo.Name},
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k8sutil.PodIPEnvVar(podIPEnvVar),
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}
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return envVars
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}
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