/
mysql_replica.go
245 lines (201 loc) · 9.98 KB
/
mysql_replica.go
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package image_ecosystem
import (
"fmt"
"time"
g "github.com/onsi/ginkgo"
o "github.com/onsi/gomega"
"github.com/openshift/api/template"
exutil "github.com/openshift/origin/test/extended/util"
"github.com/openshift/origin/test/extended/util/db"
testutil "github.com/openshift/origin/test/util"
// kapiv1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
kcoreclient "k8s.io/client-go/kubernetes/typed/core/v1"
e2e "k8s.io/kubernetes/test/e2e/framework"
)
type testCase struct {
Version string
TemplatePath string
TemplateName string
SkipReplication bool
}
var (
testCases = []testCase{
{
"5.7",
"https://raw.githubusercontent.com/sclorg/mysql-container/master/examples/replica/mysql_replica.json",
"mysql-replication-example",
false,
},
}
helperTemplate = exutil.FixturePath("..", "..", "examples", "db-templates", "mysql-ephemeral-template.json")
helperName = "mysql-helper"
)
// CreateMySQLReplicationHelpers creates a set of MySQL helpers for master,
// slave and an extra helper that is used for remote login test.
func CreateMySQLReplicationHelpers(c kcoreclient.PodInterface, masterDeployment, slaveDeployment, helperDeployment string, slaveCount int) (exutil.Database, []exutil.Database, exutil.Database) {
podNames, err := exutil.WaitForPods(c, exutil.ParseLabelsOrDie(fmt.Sprintf("deployment=%s", masterDeployment)), exutil.CheckPodIsRunning, 1, 4*time.Minute)
o.Expect(err).NotTo(o.HaveOccurred())
masterPod := podNames[0]
slavePods, err := exutil.WaitForPods(c, exutil.ParseLabelsOrDie(fmt.Sprintf("deployment=%s", slaveDeployment)), exutil.CheckPodIsRunning, slaveCount, 6*time.Minute)
o.Expect(err).NotTo(o.HaveOccurred())
// Create MySQL helper for master
master := db.NewMysql(masterPod, "")
// Create MySQL helpers for slaves
slaves := make([]exutil.Database, len(slavePods))
for i := range slavePods {
slave := db.NewMysql(slavePods[i], masterPod)
slaves[i] = slave
}
helperNames, err := exutil.WaitForPods(c, exutil.ParseLabelsOrDie(fmt.Sprintf("deployment=%s", helperDeployment)), exutil.CheckPodIsRunning, 1, 4*time.Minute)
o.Expect(err).NotTo(o.HaveOccurred())
helper := db.NewMysql(helperNames[0], masterPod)
return master, slaves, helper
}
func replicationTestFactory(oc *exutil.CLI, tc testCase, cleanup func()) func() {
return func() {
// per k8s e2e volume_util.go:VolumeTestCleanup, nuke any client pods
// before nfs server to assist with umount issues; as such, need to clean
// up prior to the AfterEach processing, to guaranteed deletion order
defer cleanup()
err := testutil.WaitForPolicyUpdate(oc.KubeClient().AuthorizationV1(), oc.Namespace(), "create", template.Resource("templates"), true)
o.Expect(err).NotTo(o.HaveOccurred())
exutil.WaitForOpenShiftNamespaceImageStreams(oc)
err = oc.Run("create").Args("-f", tc.TemplatePath).Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = oc.Run("new-app").Args("--template", tc.TemplateName).Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = oc.Run("new-app").Args("-f", helperTemplate, "-p", fmt.Sprintf("MYSQL_VERSION=%s", tc.Version), "-p", fmt.Sprintf("DATABASE_SERVICE_NAME=%s", helperName)).Execute()
o.Expect(err).NotTo(o.HaveOccurred())
// oc.KubeFramework().WaitForAnEndpoint currently will wait forever; for now, prefacing with our WaitForADeploymentToComplete,
// which does have a timeout, since in most cases a failure in the service coming up stems from a failed deployment
g.By("waiting for the deployment to complete")
err = exutil.WaitForDeploymentConfig(oc.KubeClient(), oc.AppsClient().AppsV1(), oc.Namespace(), helperName, 1, true, oc)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("waiting for an endpoint")
err = e2e.WaitForEndpoint(oc.KubeFramework().ClientSet, oc.Namespace(), helperName)
o.Expect(err).NotTo(o.HaveOccurred())
tableCounter := 0
assertReplicationIsWorking := func(masterDeployment, slaveDeployment string, slaveCount int) (exutil.Database, []exutil.Database, exutil.Database) {
tableCounter++
table := fmt.Sprintf("table_%0.2d", tableCounter)
g.By("creating replication helpers")
master, slaves, helper := CreateMySQLReplicationHelpers(oc.KubeClient().CoreV1().Pods(oc.Namespace()), masterDeployment, slaveDeployment, fmt.Sprintf("%s-1", helperName), slaveCount)
o.Expect(exutil.WaitUntilAllHelpersAreUp(oc, []exutil.Database{master})).NotTo(o.HaveOccurred())
o.Expect(exutil.WaitUntilAllHelpersAreUp(oc, slaves)).NotTo(o.HaveOccurred())
// Test if we can query as root
g.By("wait for mysql-master endpoint")
err = e2e.WaitForEndpoint(oc.KubeFramework().ClientSet, oc.Namespace(), "mysql-master")
o.Expect(err).NotTo(o.HaveOccurred())
err := helper.TestRemoteLogin(oc, "mysql-master")
o.Expect(err).NotTo(o.HaveOccurred())
// Create a new table with random name
g.By("create new table")
_, err = master.Query(oc, fmt.Sprintf("CREATE TABLE %s (col1 VARCHAR(20), col2 VARCHAR(20));", table))
o.Expect(err).NotTo(o.HaveOccurred())
// Write new data to the table through master
_, err = master.Query(oc, fmt.Sprintf("INSERT INTO %s (col1, col2) VALUES ('val1', 'val2');", table))
o.Expect(err).NotTo(o.HaveOccurred())
// Make sure data is present on master
err = exutil.WaitForQueryOutputContains(oc, master, 10*time.Second, false, fmt.Sprintf("SELECT * FROM %s\\G;", table), "col1: val1\ncol2: val2")
o.Expect(err).NotTo(o.HaveOccurred())
// Make sure data was replicated to all slaves
for _, slave := range slaves {
err = exutil.WaitForQueryOutputContains(oc, slave, 90*time.Second, false, fmt.Sprintf("SELECT * FROM %s\\G;", table), "col1: val1\ncol2: val2")
o.Expect(err).NotTo(o.HaveOccurred())
}
return master, slaves, helper
}
g.By("after initial deployment")
master, _, _ := assertReplicationIsWorking("mysql-master-1", "mysql-slave-1", 1)
if tc.SkipReplication {
return
}
g.By("after master is restarted by changing the Deployment Config")
err = oc.Run("set", "env").Args("dc", "mysql-master", "MYSQL_ROOT_PASSWORD=newpass").Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = exutil.WaitUntilPodIsGone(oc.KubeClient().CoreV1().Pods(oc.Namespace()), master.PodName(), 2*time.Minute)
if err != nil {
e2e.Logf("Checking if pod %s still exists", master.PodName())
oc.Run("get").Args("pod", master.PodName(), "-o", "yaml").Execute()
}
master, _, _ = assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)
g.By("after master is restarted by deleting the pod")
err = oc.Run("delete").Args("pod", "-l", "deployment=mysql-master-2").Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = exutil.WaitUntilPodIsGone(oc.KubeClient().CoreV1().Pods(oc.Namespace()), master.PodName(), 2*time.Minute)
if err != nil {
e2e.Logf("Checking if pod %s still exists", master.PodName())
oc.Run("get").Args("pod", master.PodName(), "-o", "yaml").Execute()
}
o.Expect(err).NotTo(o.HaveOccurred())
assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)
_, slaves, _ := assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)
// NOTE: slave restart with PVs does not work since https://github.com/sclorg/mysql-container/pull/215/
g.By("after slave is restarted by deleting the pod")
err = oc.Run("delete").Args("pod", "-l", "deployment=mysql-slave-1").Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = exutil.WaitUntilPodIsGone(oc.KubeClient().CoreV1().Pods(oc.Namespace()), slaves[0].PodName(), 2*time.Minute)
if err != nil {
e2e.Logf("Checking if pod %s still exists", slaves[0].PodName())
oc.Run("get").Args("pod", slaves[0].PodName(), "-o", "yaml").Execute()
}
o.Expect(err).NotTo(o.HaveOccurred())
assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)
pods, err := oc.KubeClient().CoreV1().Pods(oc.Namespace()).List(metav1.ListOptions{LabelSelector: exutil.ParseLabelsOrDie("deployment=mysql-slave-1").String()})
o.Expect(err).NotTo(o.HaveOccurred())
o.Expect(len(pods.Items)).To(o.Equal(1))
// NOTE: Commented out, current template does not support multiple replicas.
/*
g.By("after slave is scaled to 0 and then back to 4 replicas")
err = oc.Run("scale").Args("dc", "mysql-slave", "--replicas=0").Execute()
o.Expect(err).NotTo(o.HaveOccurred())
err = exutil.WaitUntilPodIsGone(oc.KubeClient().CoreV1().Pods(oc.Namespace()), pods.Items[0].Name, 2*time.Minute)
o.Expect(err).NotTo(o.HaveOccurred())
err = oc.Run("scale").Args("dc", "mysql-slave", "--replicas=4").Execute()
o.Expect(err).NotTo(o.HaveOccurred())
assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 4)
*/
}
}
/*
var _ = g.Describe("[image_ecosystem][mysql][Slow] openshift mysql replication", func() {
defer g.GinkgoRecover()
g.Skip("db replica tests are currently flaky and disabled")
var oc = exutil.NewCLI("mysql-replication", exutil.KubeConfigPath())
var pvs = []*kapiv1.PersistentVolume{}
var nfspod = &kapiv1.Pod{}
var cleanup = func() {
g.By("start cleanup")
if g.CurrentGinkgoTestDescription().Failed {
exutil.DumpPodStates(oc)
exutil.DumpPodLogsStartingWith("", oc)
exutil.DumpPersistentVolumeInfo(oc)
}
client := oc.AsAdmin().KubeFramework().ClientSet
g.By("removing mysql")
exutil.RemoveDeploymentConfigs(oc, "mysql-master", "mysql-slave")
g.By("deleting PVC")
exutil.DeletePVCsForDeployment(client, oc, "mysql")
g.By("removing nfs pvs")
for _, pv := range pvs {
e2e.DeletePersistentVolume(client, pv.Name)
}
g.By("removing nfs pod")
e2e.DeletePodWithWait(oc.AsAdmin().KubeFramework(), client, nfspod)
}
g.Context("", func() {
g.BeforeEach(func() {
exutil.PreTestDump()
g.By("waiting for default service account")
err := exutil.WaitForServiceAccount(oc.KubeClient().Core().ServiceAccounts(oc.Namespace()), "default")
o.Expect(err).NotTo(o.HaveOccurred())
nfspod, pvs, err = exutil.SetupK8SNFSServerAndVolume(oc, 8)
o.Expect(err).NotTo(o.HaveOccurred())
})
for _, tc := range testCases {
g.It(fmt.Sprintf("MySQL replication template for %s: %s", tc.Version, tc.TemplatePath), replicationTestFactory(oc, tc, cleanup))
}
})
})
*/