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  1. Red Hat OpenStack Services on OpenShift
  2. OSPRH-8457

memcached pod stuck in CrashLoopBackOff

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      Deploying RHOSO beta on OCP 4.14.30 (dual stack cluster). After applying the OpenStackControlPlane CR, the memcached pod failed to start. Pod log shows the following error:

      Invalid IPV6 address: "[10.131.0.91"failed to listen on TCP port 11212: Success

       

      While the OCP cluster, is dual stack, the OpenStack configuration is being built with only IPv4 addresses.

       

      [cwl@bastion Ali]$ oc -n openstack get pods -owide

      NAME                          READY   STATUS              RESTARTS         AGE   IP             NODE                              NOMINATED NODE   READINESS GATES

      memcached-0                   0/1     CrashLoopBackOff    21 (3m40s ago)   86m   10.131.0.91    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-cell1-galera-0      1/1     Running             0                86m   10.131.0.92    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-cell1-galera-1      1/1     Running             0                86m   10.128.2.4     master1.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-cell1-galera-2      1/1     Running             0                86m   10.128.0.6     master2.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-galera-0            1/1     Running             0                86m   10.131.0.90    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-galera-1            1/1     Running             0                86m   10.128.2.3     master1.cwl-site2.npss.bos2.lab   <none>           <none>

      openstack-galera-2            1/1     Running             0                86m   10.128.0.5     master2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-dlhxf          1/1     Running             0                85m   10.128.0.7     master2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-hmd9h          1/1     Running             0                85m   10.128.2.6     master1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-l9bgt          1/1     Running             0                85m   10.131.0.94    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-ovs-5lzf4      2/2     Running             0                85m   10.131.0.93    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-ovs-dn7wj      0/2     ContainerCreating   0                85m   <none>         worker2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-ovs-j5q7f      2/2     Running             0                85m   10.129.0.6     master3.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-ovs-ql8ln      2/2     Running             0                85m   10.128.0.8     master2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-ovs-tnjsp      2/2     Running             0                85m   10.128.2.8     master1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-pjlrh          1/1     Running             0                85m   10.130.0.32    worker2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-controller-wzw44          1/1     Running             0                85m   10.129.0.5     master3.cwl-site2.npss.bos2.lab   <none>           <none>

      ovn-northd-74b897b864-9jb2d   1/1     Running             0                76m   10.131.0.103   worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovsdbserver-nb-0              1/1     Running             0                85m   10.131.0.95    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovsdbserver-nb-1              1/1     Running             0                85m   10.128.2.12    master1.cwl-site2.npss.bos2.lab   <none>           <none>

      ovsdbserver-nb-2              1/1     Running             0                85m   10.128.0.16    master2.cwl-site2.npss.bos2.lab   <none>           <none>

      ovsdbserver-sb-0              1/1     Running             0                85m   10.131.0.102   worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      rabbitmq-server-0             1/1     Running             0                86m   10.131.0.87    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      rabbitmq-server-1             1/1     Running             0                86m   10.131.0.89    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      rabbitmq-server-2             1/1     Running             0                86m   10.131.0.88    worker1.cwl-site2.npss.bos2.lab   <none>           <none>

      [cwl@bastion Ali]$

      [cwl@bastion Ali]$ oc -n openstack logs memcached-0

      + sudo -E kolla_set_configs

      sudo: unable to send audit message: Operation not permitted

      INFO:_main_:Loading config file at /var/lib/kolla/config_files/config.json

      INFO:_main_:Validating config file

      INFO:_main_:Kolla config strategy set to: COPY_ALWAYS

      INFO:_main_:Copying service configuration files

      INFO:_main_:Deleting /etc/sysconfig/memcached

      INFO:_main_:Copying /var/lib/kolla/config_files/src/etc/sysconfig/memcached to /etc/sysconfig/memcached

      INFO:_main_:Copying /var/lib/config-data/tls/private/memcached.key to /etc/pki/tls/private/memcached.key

      INFO:_main_:Setting permission for /etc/pki/tls/private/memcached.key

      INFO:_main_:Copying /var/lib/config-data/tls/certs/memcached.crt to /etc/pki/tls/certs/memcached.crt

      INFO:_main_:Setting permission for /etc/pki/tls/certs/memcached.crt

      INFO:_main_:Writing out command to execute

      ++ cat /run_command

      + CMD='bash -c $* – eval source /etc/sysconfig/memcached; exec /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS'

      + ARGS=

      + sudo kolla_copy_cacerts

      sudo: unable to send audit message: Operation not permitted

      + [[ ! -n '' ]]

      + . kolla_extend_start

      + echo 'Running command: '\''bash -c $* – eval source /etc/sysconfig/memcached; exec /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS'\'''

      Running command: 'bash -c $* – eval source /etc/sysconfig/memcached; exec /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS'

      + umask 0022

      + exec bash -c '$*' – eval source '/etc/sysconfig/memcached;' exec /usr/bin/memcached -p '${PORT}' -u '${USER}' -m '${CACHESIZE}' -c '${MAXCONN}' '$OPTIONS'

      slab class   1: chunk size        96 perslab   10922

      slab class   2: chunk size       120 perslab    8738

      slab class   3: chunk size       152 perslab    6898

      slab class   4: chunk size       192 perslab    5461

      slab class   5: chunk size       240 perslab    4369

      slab class   6: chunk size       304 perslab    3449

      slab class   7: chunk size       384 perslab    2730

      slab class   8: chunk size       480 perslab    2184

      slab class   9: chunk size       600 perslab    1747

      slab class  10: chunk size       752 perslab    1394

      slab class  11: chunk size       944 perslab    1110

      slab class  12: chunk size      1184 perslab     885

      slab class  13: chunk size      1480 perslab     708

      slab class  14: chunk size      1856 perslab     564

      slab class  15: chunk size      2320 perslab     451

      slab class  16: chunk size      2904 perslab     361

      slab class  17: chunk size      3632 perslab     288

      slab class  18: chunk size      4544 perslab     230

      slab class  19: chunk size      5680 perslab     184

      slab class  20: chunk size      7104 perslab     147

      slab class  21: chunk size      8880 perslab     118

      slab class  22: chunk size     11104 perslab      94

      slab class  23: chunk size     13880 perslab      75

      slab class  24: chunk size     17352 perslab      60

      slab class  25: chunk size     21696 perslab      48

      slab class  26: chunk size     27120 perslab      38

      slab class  27: chunk size     33904 perslab      30

      slab class  28: chunk size     42384 perslab      24

      slab class  29: chunk size     52984 perslab      19

      slab class  30: chunk size     66232 perslab      15

      slab class  31: chunk size     82792 perslab      12

      slab class  32: chunk size    103496 perslab      10

      slab class  33: chunk size    129376 perslab       8

      slab class  34: chunk size    161720 perslab       6

      slab class  35: chunk size    202152 perslab       5

      slab class  36: chunk size    252696 perslab       4

      slab class  37: chunk size    315872 perslab       3

      slab class  38: chunk size    394840 perslab       2

      slab class  39: chunk size    524288 perslab       2

      <26 server listening (auto-negotiate)

      <27 server listening (auto-negotiate)

      <28 server listening (auto-negotiate)

      <29 server listening (auto-negotiate)

      Invalid IPV6 address: "[10.131.0.91"failed to listen on TCP port 11212: Success

       

      [cwl@bastion Ali]$ oc -n openstack get pods  memcached-0 -oyaml

      apiVersion: v1

      kind: Pod

      metadata:

        annotations:

          k8s.ovn.org/pod-networks: '{"default":{"ip_addresses":["10.131.0.91/23","1001:1:0:4::5b/64"],"mac_address":"0a:58:0a:83:00:5b","gateway_ips":["10.131.0.1","1001:1:0:4::1"],"routes":[

      {"dest":"10.128.0.0/14","nextHop":"10.131.0.1"}

      ,{"dest":"172.30.0.0/16","nextHop":"10.131.0.1"},{"dest":"100.64.0.0/16","nextHop":"10.131.0.1"},{"dest":"1001:1::/48","nextHop":"1001:1:0:4::1"},{"dest":"1001:2::/112","nextHop":"1001:1:0:4::1"},{"dest":"fd98::/64","nextHop":"1001:1:0:4::1"}]}}'

          k8s.v1.cni.cncf.io/network-status: |-

            [{

                "name": "ovn-kubernetes",

                "interface": "eth0",

                "ips": [

                    "10.131.0.91",

                    "1001:1:0:4::5b"

                ],

                "mac": "0a:58:0a:83:00:5b",

                "default": true,

                "dns": {}

            }]

          openshift.io/scc: anyuid

        creationTimestamp: "2024-07-09T17:18:01Z"

        generateName: memcached-

        labels:

          app: memcached

          controller-revision-hash: memcached-75b86cb678

          cr: memcached

          memcached/name: memcached

          memcached/namespace: openstack

          memcached/uid: fda9e86c-7fb8-4c4b-9280-a75c19c4f0bd

          owner: infra-operator

          statefulset.kubernetes.io/pod-name: memcached-0

        name: memcached-0

        namespace: openstack

        ownerReferences:

        - apiVersion: apps/v1

          blockOwnerDeletion: true

          controller: true

          kind: StatefulSet

          name: memcached

          uid: 08d2a6e3-e433-4e0f-833d-1ad7ea101c77

        resourceVersion: "1089858"

        uid: 3cf3f1ee-0e24-4734-8be8-440c636f7f8d

      spec:

        containers:

        - command:

          - /usr/bin/dumb-init

          - –

          - /usr/local/bin/kolla_start

          env:

          - name: KOLLA_CONFIG_STRATEGY

            value: COPY_ALWAYS

          - name: POD_IPS

            valueFrom:

              fieldRef:

                apiVersion: v1

                fieldPath: status.podIPs

          image: registry.redhat.io/rhoso-beta/openstack-memcached-rhel9:18.0.0

          imagePullPolicy: IfNotPresent

          livenessProbe:

            failureThreshold: 3

            initialDelaySeconds: 3

            periodSeconds: 3

            successThreshold: 1

            tcpSocket:

              port: 11211

            timeoutSeconds: 5

          name: memcached

          ports:

          - containerPort: 11211

            name: memcached

            protocol: TCP

          - containerPort: 11212

            name: memcached-tls

            protocol: TCP

          readinessProbe:

            failureThreshold: 3

            initialDelaySeconds: 5

            periodSeconds: 5

            successThreshold: 1

            tcpSocket:

              port: 11211

            timeoutSeconds: 5

          resources: {}

          securityContext:

            capabilities:

              drop:

              - MKNOD

            runAsUser: 0

          terminationMessagePath: /dev/termination-log

          terminationMessagePolicy: File

          volumeMounts:

          - mountPath: /var/lib/kolla/config_files/src

            name: config-data

            readOnly: true

          - mountPath: /var/lib/kolla/config_files

            name: kolla-config

            readOnly: true

          - mountPath: /var/lib/config-data/tls/certs/memcached.crt

            name: memcached-tls-certs

            readOnly: true

            subPath: tls.crt

          - mountPath: /var/lib/config-data/tls/private/memcached.key

            name: memcached-tls-certs

            readOnly: true

            subPath: tls.key

          - mountPath: /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem

            name: combined-ca-bundle

            readOnly: true

            subPath: tls-ca-bundle.pem

          - mountPath: /var/run/secrets/kubernetes.io/serviceaccount

            name: kube-api-access-xkhv9

            readOnly: true

        dnsPolicy: ClusterFirst

        enableServiceLinks: true

        hostname: memcached-0

        imagePullSecrets:

        - name: memcached-memcached-dockercfg-mrt6z

        nodeName: worker1.cwl-site2.npss.bos2.lab

        preemptionPolicy: PreemptLowerPriority

        priority: 0

        restartPolicy: Always

        schedulerName: default-scheduler

        securityContext:

          seLinuxOptions:

            level: s0:c31,c10

        serviceAccount: memcached-memcached

        serviceAccountName: memcached-memcached

        subdomain: memcached

        terminationGracePeriodSeconds: 30

        tolerations:

        - effect: NoExecute

          key: node.kubernetes.io/not-ready

          operator: Exists

          tolerationSeconds: 300

        - effect: NoExecute

          key: node.kubernetes.io/unreachable

          operator: Exists

          tolerationSeconds: 300

        volumes:

        - configMap:

            defaultMode: 420

            items:

            - key: config.json

              path: config.json

            name: memcached-config-data

          name: kolla-config

        - configMap:

            defaultMode: 420

            items:

            - key: memcached

              path: etc/sysconfig/memcached

            name: memcached-config-data

          name: config-data

        - name: memcached-tls-certs

          secret:

            defaultMode: 256

            secretName: cert-memcached-svc

        - name: combined-ca-bundle

          secret:

            defaultMode: 292

            secretName: combined-ca-bundle

        - name: kube-api-access-xkhv9

          projected:

            defaultMode: 420

            sources:

            - serviceAccountToken:

                expirationSeconds: 3607

                path: token

            - configMap:

                items:

                - key: ca.crt

                  path: ca.crt

                name: kube-root-ca.crt

            - downwardAPI:

                items:

                - fieldRef:

                    apiVersion: v1

                    fieldPath: metadata.namespace

                  path: namespace

            - configMap:

                items:

                - key: service-ca.crt

                  path: service-ca.crt

                name: openshift-service-ca.crt

      status:

        conditions:

        - lastProbeTime: null

          lastTransitionTime: "2024-07-09T17:18:01Z"

          status: "True"

          type: Initialized

        - lastProbeTime: null

          lastTransitionTime: "2024-07-09T17:18:01Z"

          message: 'containers with unready status: [memcached]'

          reason: ContainersNotReady

          status: "False"

          type: Ready

        - lastProbeTime: null

          lastTransitionTime: "2024-07-09T17:18:01Z"

          message: 'containers with unready status: [memcached]'

          reason: ContainersNotReady

          status: "False"

          type: ContainersReady

        - lastProbeTime: null

          lastTransitionTime: "2024-07-09T17:18:01Z"

          status: "True"

          type: PodScheduled

        containerStatuses:

        - containerID: cri-o://331e387cc7ff0286d7e04bbfdd8242065ae754816417eeb2d30f234bf373c8ff

          image: registry.redhat.io/rhoso-beta/openstack-memcached-rhel9:18.0.0

          imageID: registry.redhat.io/rhoso-beta/openstack-memcached-rhel9@sha256:7f4e5e72c23a2d3d045ea3aefd03b36c4803d38d5697e689d3d5f73cd7b5c38e

          lastState:

            terminated:

              containerID: cri-o://331e387cc7ff0286d7e04bbfdd8242065ae754816417eeb2d30f234bf373c8ff

              exitCode: 71

              finishedAt: "2024-07-09T18:45:25Z"

              reason: Error

              startedAt: "2024-07-09T18:45:24Z"

          name: memcached

          ready: false

          restartCount: 22

          started: false

          state:

            waiting:

              message: back-off 5m0s restarting failed container=memcached pod=memcached-0_openstack(3cf3f1ee-0e24-4734-8be8-440c636f7f8d)

              reason: CrashLoopBackOff

        hostIP: 172.31.61.9

        phase: Running

        podIP: 10.131.0.91

        podIPs:

        - ip: 10.131.0.91

        - ip: 1001:1:0:4::5b

        qosClass: BestEffort

        startTime: "2024-07-09T17:18:01Z"

            Unassigned Unassigned
            abokhari@redhat.com Ali Bokhari
            rhos-dfg-ospk8s
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              Created:
              Updated: