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pod_crash.go
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pod_crash.go
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// Copyright 2018 Oracle and/or its affiliates. All rights reserved.
//
// 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 e2e
import (
"fmt"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
clientset "k8s.io/client-go/kubernetes"
"github.com/oracle/mysql-operator/pkg/apis/mysql/v1alpha1"
mysqlclientset "github.com/oracle/mysql-operator/pkg/generated/clientset/versioned"
"github.com/oracle/mysql-operator/test/e2e/framework"
)
var _ = Describe("Pod crash", func() {
f := framework.NewDefaultFramework("pod-crash")
var cs clientset.Interface
var mcs mysqlclientset.Interface
BeforeEach(func() {
cs = f.ClientSet
mcs = f.MySQLClientSet
})
It("should be the case that single-primary Clusters recover from Pods crashing", func() {
clusterName := "pod-crash"
ns := f.Namespace.Name
grace := int64(0) // kill don't gracefully terminate
jig := framework.NewClusterTestJig(mcs, cs, clusterName)
cluster := jig.CreateAndAwaitClusterOrFail(ns, 3, nil, framework.DefaultTimeout)
primary := framework.GetReadyPrimaryPodName(cs, ns, cluster.Name)
expected, err := framework.WriteSQLTest(cluster, primary)
Expect(err).NotTo(HaveOccurred())
actual, err := framework.ReadSQLTest(cluster, primary)
Expect(err).NotTo(HaveOccurred())
Expect(actual).To(Equal(expected))
By("Terminating the cluster primary")
err = cs.CoreV1().Pods(ns).Delete(primary, &metav1.DeleteOptions{GracePeriodSeconds: &grace})
Expect(err).NotTo(HaveOccurred())
By("Checking that the primary has failed over to another member")
newPrimary := framework.GetReadyPrimaryPodName(cs, ns, cluster.Name)
Expect(newPrimary).NotTo(Equal(primary))
secondary := framework.GetReadySecondaryPodName(cs, ns, cluster.Name)
By(fmt.Sprintf("Terminating cluster secondary %q", secondary))
err = cs.CoreV1().Pods(ns).Delete(secondary, &metav1.DeleteOptions{GracePeriodSeconds: &grace})
Expect(err).NotTo(HaveOccurred())
By("Checking that we can still read the previously inserted data from the test DB")
actual, err = framework.ReadSQLTest(cluster, newPrimary)
Expect(err).NotTo(HaveOccurred())
Expect(actual).To(Equal(expected))
})
It("should be the case that multi-primary Clusters recover from Pods crashing", func() {
clusterName := "pod-crash"
ns := f.Namespace.Name
grace := int64(0) // kill don't gracefully terminate
jig := framework.NewClusterTestJig(mcs, cs, clusterName)
cluster := jig.CreateAndAwaitClusterOrFail(ns, 3, func(cluster *v1alpha1.Cluster) {
cluster.Spec.MultiMaster = true
}, framework.DefaultTimeout)
primary := framework.GetReadyPrimaryPodName(cs, ns, cluster.Name)
expected, err := framework.WriteSQLTest(cluster, primary)
Expect(err).NotTo(HaveOccurred())
actual, err := framework.ReadSQLTest(cluster, primary)
Expect(err).NotTo(HaveOccurred())
Expect(actual).To(Equal(expected))
By(fmt.Sprintf("Terminating cluster member %q", primary))
err = cs.CoreV1().Pods(ns).Delete(primary, &metav1.DeleteOptions{GracePeriodSeconds: &grace})
Expect(err).NotTo(HaveOccurred())
By("Checking that we can still read the previously inserted data from the test DB")
actual, err = framework.ReadSQLTest(cluster, framework.GetReadyPrimaryPodName(cs, ns, cluster.Name))
Expect(err).NotTo(HaveOccurred())
Expect(actual).To(Equal(expected))
})
})