277 lines
9.4 KiB
Go
Executable File
277 lines
9.4 KiB
Go
Executable File
// Copyright 2020 VEXXHOST, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package controllers
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
|
|
"github.com/go-logr/logr"
|
|
appsv1 "k8s.io/api/apps/v1"
|
|
corev1 "k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
ctrl "sigs.k8s.io/controller-runtime"
|
|
"sigs.k8s.io/controller-runtime/pkg/client"
|
|
|
|
monitoringv1 "opendev.org/vexxhost/openstack-operator/api/monitoring/v1"
|
|
infrastructurev1alpha1 "opendev.org/vexxhost/openstack-operator/api/v1alpha1"
|
|
"opendev.org/vexxhost/openstack-operator/builders"
|
|
"opendev.org/vexxhost/openstack-operator/utils/baseutils"
|
|
"opendev.org/vexxhost/openstack-operator/utils/k8sutils"
|
|
)
|
|
|
|
// McrouterReconciler reconciles a Mcrouter object
|
|
type McrouterReconciler struct {
|
|
client.Client
|
|
Log logr.Logger
|
|
Scheme *runtime.Scheme
|
|
}
|
|
|
|
// +kubebuilder:rbac:groups=infrastructure.vexxhost.cloud,resources=mcrouters,verbs=get;list;watch;create;update;patch;delete
|
|
// +kubebuilder:rbac:groups=infrastructure.vexxhost.cloud,resources=mcrouters/status,verbs=get;update;patch
|
|
// +kubebuilder:rbac:groups=monitoring.coreos.com,resources=prometheusrules,verbs=get;list;watch;create;update;patch;delete
|
|
// +kubebuilder:rbac:groups=monitoring.coreos.com,resources=podmonitors,verbs=get;list;watch;create;update;patch;delete
|
|
// +kubebuilder:rbac:groups=core,resources=configmaps;services,verbs=get;list;watch;create;update;patch;delete
|
|
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
|
|
|
|
// Reconcile does the reconcilication of Mcrouter instances
|
|
func (r *McrouterReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
|
|
ctx := context.Background()
|
|
log := r.Log.WithValues("mcrouter", req.NamespacedName)
|
|
|
|
var mcrouter infrastructurev1alpha1.Mcrouter
|
|
if err := r.Get(ctx, req.NamespacedName, &mcrouter); err != nil {
|
|
return ctrl.Result{}, client.IgnoreNotFound(err)
|
|
}
|
|
|
|
// Labels
|
|
typeLabels := baseutils.MergeMapsWithoutOverwrite(map[string]string{
|
|
"app.kubernetes.io/name": "mcrouter",
|
|
"app.kubernetes.io/managed-by": "openstack-operator",
|
|
}, mcrouter.Labels)
|
|
|
|
labels := map[string]string{
|
|
"app.kubernetes.io/name": "mcrouter",
|
|
"app.kubernetes.io/managed-by": "openstack-operator",
|
|
"app.kubernetes.io/instance": req.Name,
|
|
}
|
|
|
|
// ConfigMap
|
|
if res, err := r.ReconcileConfigMap(ctx, req, &mcrouter, log); err != nil || res != (ctrl.Result{}) {
|
|
return res, err
|
|
}
|
|
|
|
// Deployment
|
|
if res, err := r.ReconcileDeployment(ctx, req, &mcrouter, log, labels); err != nil || res != (ctrl.Result{}) {
|
|
return res, err
|
|
}
|
|
|
|
// PodMonitor
|
|
if res, err := r.ReconcilePodMonitor(ctx, req, &mcrouter, log, typeLabels); err != nil || res != (ctrl.Result{}) {
|
|
return res, err
|
|
}
|
|
|
|
// Alertrule
|
|
if res, err := r.ReconcilePrometheusRule(ctx, req, &mcrouter, log, typeLabels); err != nil || res != (ctrl.Result{}) {
|
|
return res, err
|
|
}
|
|
|
|
// Service
|
|
if res, err := r.ReconcileService(ctx, req, &mcrouter, log, labels); err != nil || res != (ctrl.Result{}) {
|
|
return res, err
|
|
}
|
|
return ctrl.Result{}, nil
|
|
|
|
}
|
|
|
|
// SetupWithManager initializes the controller with primary manager
|
|
func (r *McrouterReconciler) SetupWithManager(mgr ctrl.Manager) error {
|
|
return ctrl.NewControllerManagedBy(mgr).
|
|
For(&infrastructurev1alpha1.Mcrouter{}).
|
|
Owns(&corev1.ConfigMap{}).
|
|
Owns(&appsv1.Deployment{}).
|
|
Owns(&corev1.Service{}).
|
|
Owns(&monitoringv1.PodMonitor{}).
|
|
Owns(&monitoringv1.PrometheusRule{}).
|
|
Complete(r)
|
|
}
|
|
|
|
// ReconcileService reconciles the service
|
|
func (r *McrouterReconciler) ReconcileService(ctx context.Context, req ctrl.Request, mcrouter *infrastructurev1alpha1.Mcrouter, log logr.Logger, labels map[string]string) (ctrl.Result, error) {
|
|
service := &corev1.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: req.Namespace,
|
|
Name: fmt.Sprintf("mcrouter-%s", req.Name),
|
|
},
|
|
}
|
|
op, err := k8sutils.CreateOrUpdate(ctx, r, service, func() error {
|
|
return builders.Service(service, mcrouter, r.Scheme).
|
|
Port("mcrouter", 11211).
|
|
Selector(labels).
|
|
Build()
|
|
})
|
|
if err != nil {
|
|
return ctrl.Result{}, err
|
|
}
|
|
log.WithValues("resource", "Service").WithValues("op", op).Info("Reconciled")
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
// ReconcilePodMonitor reconciles the podMonitor
|
|
func (r *McrouterReconciler) ReconcilePodMonitor(ctx context.Context, req ctrl.Request, mcrouter *infrastructurev1alpha1.Mcrouter, log logr.Logger, labels map[string]string) (ctrl.Result, error) {
|
|
podMonitor := &monitoringv1.PodMonitor{
|
|
TypeMeta: metav1.TypeMeta{
|
|
APIVersion: "monitoring.coreos.com/v1",
|
|
Kind: "PodMonitor",
|
|
},
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: req.Namespace,
|
|
Name: "mcrouter-podmonitor",
|
|
},
|
|
}
|
|
op, err := k8sutils.CreateOrUpdate(ctx, r, podMonitor, func() error {
|
|
return builders.PodMonitor(podMonitor, mcrouter, r.Scheme).
|
|
Labels(labels).
|
|
Selector(map[string]string{
|
|
"app.kubernetes.io/name": "mcrouter",
|
|
}).
|
|
PodMetricsEndpoints(
|
|
builders.PodMetricsEndpoint().
|
|
Port("metrics").
|
|
Path("/metrics").
|
|
Interval("15s"),
|
|
).Build()
|
|
|
|
})
|
|
if err != nil {
|
|
return ctrl.Result{}, err
|
|
}
|
|
log.WithValues("resource", "mcrouter-podmonitor").WithValues("op", op).Info("Reconciled")
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
// ReconcilePrometheusRule reconciles the prometheusRule
|
|
func (r *McrouterReconciler) ReconcilePrometheusRule(ctx context.Context, req ctrl.Request, mcrouter *infrastructurev1alpha1.Mcrouter, log logr.Logger, labels map[string]string) (ctrl.Result, error) {
|
|
alertRule := &monitoringv1.PrometheusRule{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: req.Namespace,
|
|
Name: "mcrouter-alertrule",
|
|
},
|
|
}
|
|
op, err := k8sutils.CreateOrUpdate(ctx, r, alertRule, func() error {
|
|
return builders.PrometheusRule(alertRule, mcrouter, r.Scheme).
|
|
Labels(labels).
|
|
RuleGroups(builders.RuleGroup().
|
|
Name("mcrouter-rule").
|
|
Rules(
|
|
builders.Rule().
|
|
Alert("McrouterBackendDown").
|
|
Message("Backend Memcached servers are down.").
|
|
Priority(1).
|
|
Expr("mcrouter_servers{state='down'}!=0"),
|
|
builders.Rule().
|
|
Alert("McrouterBackendTimeout").
|
|
Message("Backend Memcached servers are timeout.").
|
|
Priority(1).
|
|
Expr("mcrouter_server_memcached_timeout_count>0"),
|
|
).
|
|
Interval("1m")).
|
|
Build()
|
|
})
|
|
if err != nil {
|
|
return ctrl.Result{}, err
|
|
}
|
|
log.WithValues("resource", "mcrouter-alertrule").WithValues("op", op).Info("Reconciled")
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
// ReconcileDeployment reconciles the deployment
|
|
func (r *McrouterReconciler) ReconcileDeployment(ctx context.Context, req ctrl.Request, mcrouter *infrastructurev1alpha1.Mcrouter, log logr.Logger, labels map[string]string) (ctrl.Result, error) {
|
|
deployment := &appsv1.Deployment{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: req.Namespace,
|
|
Name: fmt.Sprintf("mcrouter-%s", req.Name),
|
|
},
|
|
}
|
|
op, err := k8sutils.CreateOrUpdate(ctx, r, deployment, func() error {
|
|
return builders.Deployment(deployment, mcrouter, r.Scheme).
|
|
Labels(labels).
|
|
Replicas(2).
|
|
PodTemplateSpec(
|
|
builders.PodTemplateSpec().
|
|
PodSpec(
|
|
builders.PodSpec().
|
|
NodeSelector(mcrouter.Spec.NodeSelector).
|
|
Tolerations(mcrouter.Spec.Tolerations).
|
|
Containers(
|
|
builders.Container("mcrouter", "vexxhost/mcrouter:latest").
|
|
Args("-p", "11211", "-f", "/data/config.json").
|
|
Port("mcrouter", 11211).PortProbe("mcrouter", 10, 30).
|
|
Resources(500, 128, 500, 2).
|
|
Volume("config", "/data").
|
|
SecurityContext(
|
|
builders.SecurityContext().
|
|
RunAsUser(999).
|
|
RunAsGroup(999),
|
|
),
|
|
builders.Container("exporter", "vexxhost/mcrouter-exporter:latest").
|
|
Args("-mcrouter.address", "localhost:11211").
|
|
Port("metrics", 9442).HTTPProbe("metrics", "/metrics", 10, 30).
|
|
Resources(500, 128, 500, 2).
|
|
SecurityContext(
|
|
builders.SecurityContext().
|
|
RunAsUser(1001),
|
|
),
|
|
).
|
|
Volumes(
|
|
builders.Volume("config").FromConfigMap(fmt.Sprintf("mcrouter-%s", req.Name)),
|
|
),
|
|
),
|
|
).
|
|
Build()
|
|
})
|
|
if err != nil {
|
|
return ctrl.Result{}, err
|
|
}
|
|
log.WithValues("resource", "Deployment").WithValues("op", op).Info("Reconciled")
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
// ReconcileConfigMap reconciles the configMap
|
|
func (r *McrouterReconciler) ReconcileConfigMap(ctx context.Context, req ctrl.Request, mcrouter *infrastructurev1alpha1.Mcrouter, log logr.Logger) (ctrl.Result, error) {
|
|
configMap := &corev1.ConfigMap{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: req.Namespace,
|
|
Name: fmt.Sprintf("mcrouter-%s", req.Name),
|
|
},
|
|
}
|
|
op, err := k8sutils.CreateOrUpdate(ctx, r, configMap, func() error {
|
|
b, err := json.Marshal(mcrouter.Spec)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return builders.ConfigMap(configMap, mcrouter, r.Scheme).
|
|
Data("config.json", string(b)).
|
|
Build()
|
|
})
|
|
if err != nil {
|
|
return ctrl.Result{}, err
|
|
}
|
|
log.WithValues("resource", "ConfigMap").WithValues("op", op).Info("Reconciled")
|
|
return ctrl.Result{}, nil
|
|
}
|