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cke_test.go
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cke_test.go
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package dctest
import (
"bufio"
"bytes"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/cybozu-go/sabakan/v3"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
corev1 "k8s.io/api/core/v1"
)
// serfMember is copied from type Member https://godoc.org/github.com/hashicorp/serf/cmd/serf/command#Member
// to prevent much vendoring
type serfMember struct {
Name string `json:"name"`
Addr string `json:"addr"`
Port uint16 `json:"port"`
Tags map[string]string `json:"tags"`
Status string `json:"status"`
Proto map[string]uint8 `json:"protocol"`
// contains filtered or unexported fields
}
// serfMemberContainer is copied from type MemberContainer https://godoc.org/github.com/hashicorp/serf/cmd/serf/command#MemberContainer
// to prevent much vendoring
type serfMemberContainer struct {
Members []serfMember `json:"members"`
}
// testCKESetup tests CKE setup
func testCKESetup() {
It("should generates cluster.yml automatically", func() {
By("setting configurations")
execSafeAt(bootServers[0], "ckecli", "constraints", "set", "control-plane-count", "3")
execSafeAt(bootServers[0], "ckecli", "constraints", "set", "minimum-workers", "2")
execSafeAt(bootServers[0], "ckecli", "sabakan", "set-url", "http://localhost:10080")
By("waiting for cluster.yml generation")
Eventually(func() error {
stdout, stderr, err := execAt(bootServers[0], "ckecli", "cluster", "get")
if err != nil {
return fmt.Errorf("stdout: %s, stderr: %s, err: %v", stdout, stderr, err)
}
return nil
}, 20*time.Minute).Should(Succeed())
})
}
// testCKE tests CKE
func testCKE() {
It("all systemd units are active", func() {
By("getting machines list")
stdout, stderr, err := execAt(bootServers[0], "sabactl", "machines", "get", "--role=cs")
Expect(err).ShouldNot(HaveOccurred(), "stdout=%s, stderr=%s", stdout, stderr)
var csMachines []sabakan.Machine
err = json.Unmarshal(stdout, &csMachines)
Expect(err).ShouldNot(HaveOccurred(), "data=%s", stdout)
stdout, stderr, err = execAt(bootServers[0], "sabactl", "machines", "get", "--role=ss")
Expect(err).ShouldNot(HaveOccurred(), "stdout=%s, stderr=%s", stdout, stderr)
var ssMachines []sabakan.Machine
err = json.Unmarshal(stdout, &ssMachines)
Expect(err).ShouldNot(HaveOccurred(), "data=%s", stdout)
availableNodes := len(csMachines) + len(ssMachines)
Expect(availableNodes).NotTo(Equal(0))
By("getting systemd unit statuses by serf members")
Eventually(func() error {
m, err := getSerfWorkerMembers()
if err != nil {
return err
}
if len(m.Members) != availableNodes {
return fmt.Errorf("too few serf members: %d", len(m.Members))
}
for _, member := range m.Members {
tag, ok := member.Tags["systemd-units-failed"]
if !ok {
return fmt.Errorf("member %s does not define tag systemd-units-failed", member.Name)
}
if tag != "" {
return fmt.Errorf("member %s fails systemd units: %s", member.Name, tag)
}
serial, ok := member.Tags["serial"]
if !ok {
return fmt.Errorf("member %s does not define tag serial", member.Name)
}
stdout := execSafeAt(bootServers[0], "sabactl", "machines", "get-state", serial)
state := string(bytes.TrimSpace(stdout))
if state != "healthy" {
return fmt.Errorf("sabakan machine state of member %s is not healthy: %s", member.Name, state)
}
}
return nil
}).Should(Succeed())
})
It("wait for Kubernetes cluster to become ready", func() {
By("generating kubeconfig for cluster admin")
Eventually(func() error {
_, stderr, err := execAt(bootServers[0], "ckecli", "kubernetes", "issue", ">", ".kube/config")
if err != nil {
return fmt.Errorf("err: %v, stderr: %s", err, stderr)
}
return nil
}).Should(Succeed())
By("waiting nodes")
Eventually(func() error {
stdout, stderr, err := execAt(bootServers[0], "kubectl", "get", "nodes", "-o", "json")
if err != nil {
return fmt.Errorf("stdout: %s, stderr: %s, err: %v", stdout, stderr, err)
}
var nl corev1.NodeList
err = json.Unmarshal(stdout, &nl)
if err != nil {
return err
}
// control-plane-count + minimum-workers = 5
// https://github.com/cybozu-go/cke/blob/main/docs/sabakan-integration.md#initialization
if len(nl.Items) != 5 {
return fmt.Errorf("too few nodes: %d", len(nl.Items))
}
return nil
}).Should(Succeed())
})
}
// testCKE tests CKE etcd backup metrics
func testCKEBackupMetrics() {
It("check for CKE etcd backup metrics", func() {
execSafeAt(bootServers[0], "sudo", "/usr/sbin/backup-cke-etcd")
stdout, stderr, err := execAt(bootServers[0], "curl", "-s", "http://localhost:9100/metrics")
Expect(err).ShouldNot(HaveOccurred(), "stderr=%s", stderr)
metrics := []string{"cke_etcd_backup_last_executed_time", "cke_etcd_backup_last_succeeded_time"}
exists := make([]bool, len(metrics))
scanner := bufio.NewScanner(bytes.NewReader(stdout))
for scanner.Scan() {
s := scanner.Text()
for i, m := range metrics {
if strings.HasPrefix(s, m) {
exists[i] = true
}
}
}
for _, b := range exists {
Expect(b).To(Equal(true))
}
})
}