群集信息：

Kubernetes version:
    root@k8s-eu-1-master:~# kubectl version
    Client Version: v1.28.2
    Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
    Server Version: v1.28.2

字符串
使用的云：Contabo Cloud（bare-metal）安装方法：遵循以下步骤：https://www.linuxtechi.com/install-kubernetes-on-ubuntu-22-04/?utm_content=cmp-true主机操作系统：Ubuntu 22.04 CNI和版本：

root@k8s-eu-1-master:~# ls /etc/cni/net.d/
10-flannel.conflist
root@k8s-eu-1-master:~# cat /etc/cni/net.d/10-flannel.conflist 
{
  "name": "cbr0",
  "cniVersion": "0.3.1",
  "plugins": [
    {
      "type": "flannel",
      "delegate": {
        "hairpinMode": true,
        "isDefaultGateway": true
      }
    },
    {
      "type": "portmap",
      "capabilities": {
        "portMappings": true
      }
    }
  ]
}

型
CRI和版本：

Container Runtime : containerd 
root@k8s-eu-1-master:~# cat /etc/containerd/config.toml  | grep version
version = 2

型
Pod在状态Running和状态CrashLoopBackOff之间来回移动

root@k8s-eu-1-master:~# kubectl get pods -n kube-system
NAME                                      READY   STATUS    RESTARTS       AGE
coredns-5dd5756b68-g2bkc                  1/1     Running   0              2d4h
coredns-5dd5756b68-gt7xt                  1/1     Running   0              2d4h
etcd-k8s-eu-1-master                      1/1     Running   1 (2d2h ago)   2d4h
kube-apiserver-k8s-eu-1-master            1/1     Running   1 (2d2h ago)   2d4h
kube-controller-manager-k8s-eu-1-master   1/1     Running   1 (2d2h ago)   2d4h
kube-proxy-7mj86                          1/1     Running   1 (2d2h ago)   2d4h
kube-proxy-7nvv5                          1/1     Running   1 (2d2h ago)   2d3h
kube-proxy-fq6vz                          1/1     Running   1 (2d2h ago)   2d4h
kube-proxy-n2nm5                          1/1     Running   1 (2d2h ago)   2d3h
kube-proxy-qhvrn                          1/1     Running   1 (2d2h ago)   2d4h
kube-proxy-tbrn4                          1/1     Running   1 (2d2h ago)   2d3h
kube-scheduler-k8s-eu-1-master            1/1     Running   1 (2d2h ago)   2d4h
root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS             RESTARTS       AGE
arango-deployment-operator-7f59876f78-7djdr   0/1     CrashLoopBackOff   87 (11s ago)   4h58m
arango-storage-operator-6c7fdf5586-gjcrp      0/1     CrashLoopBackOff   83 (98s ago)   4h44m
root@k8s-eu-1-master:~# kubectl describe pod arango-deployment-operator-7f59876f78-7djdr
Name:             arango-deployment-operator-7f59876f78-7djdr
Namespace:        default
Priority:         0
Service Account:  arango-deployment-operator
Node:             k8s-eu-1-worker-2/xx.xxx.xxx.xxx
Start Time:       Thu, 19 Oct 2023 12:56:41 +0200
Labels:           app.kubernetes.io/instance=deployment
                  app.kubernetes.io/managed-by=Tiller
                  app.kubernetes.io/name=kube-arangodb
                  helm.sh/chart=kube-arangodb-1.2.34
                  pod-template-hash=7f59876f78
                  release=deployment
Annotations:      <none>
Status:           Running
IP:               10.244.0.6
IPs:
  IP:           10.244.0.6
Controlled By:  ReplicaSet/arango-deployment-operator-7f59876f78
Containers:
  operator:
    Container ID:  containerd://344e2967054112557a9333332f99a8ca1dc3312285c808c727de6468f8c73381
    Image:         arangodb/kube-arangodb:1.2.34
    Image ID:      docker.io/arangodb/kube-arangodb@sha256:a25d031e87ba5b0f3038ce9f346553b69760a3a065fe608727cde188602b59e8
    Port:          8528/TCP
    Host Port:     0/TCP
    Args:
      --scope=legacy
      --operator.deployment
      --mode.single
      --chaos.allowed=false
      --log.level=debug
    State:          Waiting
      Reason:       CrashLoopBackOff
    Last State:     Terminated
      Reason:       Error
      Exit Code:    137
      Started:      Thu, 19 Oct 2023 17:39:23 +0200
      Finished:     Thu, 19 Oct 2023 17:40:22 +0200
    Ready:          False
    Restart Count:  83
    Liveness:       http-get https://:8528/health delay=5s timeout=1s period=10s #success=1 #failure=3
    Readiness:      http-get https://:8528/ready delay=5s timeout=1s period=10s #success=1 #failure=3
    Environment:
      MY_POD_NAMESPACE:  default (v1:metadata.namespace)
      MY_POD_NAME:       arango-deployment-operator-7f59876f78-7djdr (v1:metadata.name)
      MY_POD_IP:          (v1:status.podIP)
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-g4fbd (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  kube-api-access-g4fbd:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 5s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 5s
Events:
  Type     Reason     Age                      From     Message
  ----     ------     ----                     ----     -------
  Warning  Unhealthy  48m (x215 over 4h48m)    kubelet  Liveness probe failed: Get "https://10.244.0.6:8528/health": dial tcp 10.244.0.6:8528: connect: connection refused
  Normal   Pulling    28m (x77 over 4h48m)     kubelet  Pulling image "arangodb/kube-arangodb:1.2.34"
  Warning  Unhealthy  13m (x565 over 4h48m)    kubelet  Readiness probe failed: Get "https://10.244.0.6:8528/ready": dial tcp 10.244.0.6:8528: connect: connection refused
  Warning  BackOff    3m28s (x968 over 4h42m)  kubelet  Back-off restarting failed container operator in pod arango-deployment-operator-7f59876f78-7djdr_default(d1d6ec8e-b413-4ab8-84d7-8f6686cd3a8a)
root@k8s-eu-1-master:~# kubectl logs arango-deployment-operator-7f59876f78-7djdr
2023-10-19T15:45:24Z INF nice to meet you operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature agency-poll (deployment.feature.agency-poll) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature deployment-spec-defaults-restore (deployment.feature.deployment-spec-defaults-restore) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature encryption-rotation (deployment.feature.encryption-rotation) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature enforced-resign-leadership (deployment.feature.enforced-resign-leadership) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature ephemeral-volumes (deployment.feature.ephemeral-volumes) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature failover-leadership (deployment.feature.failover-leadership) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature force-rebuild-out-synced-shards (deployment.feature.force-rebuild-out-synced-shards) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature graceful-shutdown (deployment.feature.graceful-shutdown) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature init-containers-copy-resources (deployment.feature.init-containers-copy-resources) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature jwt-rotation (deployment.feature.jwt-rotation) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature local-storage.pass-reclaim-policy (deployment.feature.local-storage.pass-reclaim-policy) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature local-volume-replacement-check (deployment.feature.local-volume-replacement-check) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature maintenance (deployment.feature.maintenance) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature metrics-exporter (deployment.feature.metrics-exporter) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature optional-graceful-shutdown (deployment.feature.optional-graceful-shutdown) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature random-pod-names (deployment.feature.random-pod-names) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature rebalancer-v2 (deployment.feature.rebalancer-v2) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature restart-policy-always (deployment.feature.restart-policy-always) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature secured-containers (deployment.feature.secured-containers) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature sensitive-information-protection (deployment.feature.sensitive-information-protection) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature short-pod-names (deployment.feature.short-pod-names) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature timezone-management (deployment.feature.timezone-management) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature tls-rotation (deployment.feature.tls-rotation) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature tls-sni (deployment.feature.tls-sni) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature upgrade-version-check (deployment.feature.upgrade-version-check) is enabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature upgrade-version-check-v2 (deployment.feature.upgrade-version-check-v2) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Operator Feature version.3-10 (deployment.feature.version.3-10) is disabled. operator-id=7djdr
2023-10-19T15:45:24Z INF Starting arangodb-operator (Community), version 1.2.34 build 05e58812 operator-id=7djdr pod-name=arango-deployment-operator-7f59876f78-7djdr pod-namespace=default
2023-10-19T15:45:54Z INF Get Operations is not allowed. Continue crd=arangojobs.apps.arangodb.com operator-id=7djdr

型
为什么突然两个Arango Pod的状态都从running变成了CrashLoopBackOff？

root@k8s-eu-1-master:~# kubectl get pods
  NAME                                          READY   STATUS             RESTARTS        AGE
  arango-deployment-operator-7f59876f78-7djdr   0/1     CrashLoopBackOff   87 (100s ago)   4h59m
  arango-storage-operator-6c7fdf5586-gjcrp      0/1     CrashLoopBackOff   83 (3m7s ago)   4h45m
  root@k8s-eu-1-master:~# 
  root@k8s-eu-1-master:~# kubectl get pods
  NAME                                          READY   STATUS             RESTARTS         AGE
  arango-deployment-operator-7f59876f78-7djdr   0/1     CrashLoopBackOff   89 (4m47s ago)   5h9m
  arango-storage-operator-6c7fdf5586-gjcrp      0/1     Running            86 (6m4s ago)    4h55m
  root@k8s-eu-1-master:~#

型
更新1）：
正如@Sat21343所建议的那样，我定义了资源（内存+ CPU）请求和限制（https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#example-1）：

containers:
        - name: operator
          # https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#example-1
          resources:
            requests:
              memory: "128Mi"
              cpu: "250m"
            limits:
              memory: "526Mi"
              cpu: "500m"

型
arango-storage.yaml也一样。
但是pod仍然在Running和CrashLoopBackOff状态之间来回移动：

root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS    RESTARTS      AGE
arango-deployment-operator-65cd58968f-xmz5w   0/1     Running   3 (7s ago)    3m8s
arango-storage-operator-58b8cb7c78-8dlb7      0/1     Running   2 (60s ago)   3m
 root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS             RESTARTS      AGE
arango-deployment-operator-65cd58968f-xmz5w   0/1     CrashLoopBackOff   5 (29s ago)   6m30s
arango-storage-operator-58b8cb7c78-8dlb7      0/1     CrashLoopBackOff   5 (22s ago)   6m22s
root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS    RESTARTS      AGE
arango-deployment-operator-65cd58968f-xmz5w   0/1     Running   9 (31s ago)   19m
arango-storage-operator-58b8cb7c78-8dlb7      0/1     Running   9 (24s ago)   18m
root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS             RESTARTS      AGE
arango-deployment-operator-65cd58968f-xmz5w   0/1     CrashLoopBackOff   9 (57s ago)   20m
arango-storage-operator-58b8cb7c78-8dlb7      0/1     CrashLoopBackOff   9 (50s ago)   20m

型
更新2）：
我将资源请求和限制增加到：

containers:
    - name: operator
      # https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#example-1
      resources:
        requests:
          memory: "1024Mi"
          cpu: "500m"
        limits:
          memory: "2048Mi"
          cpu: "1000m"

型
但是，pod仍然在Running State和CrashLoopBackOff State之间来回移动：

root@k8s-eu-1-master:~# kubectl get pods
NAME                                          READY   STATUS        RESTARTS          AGE
arango-deployment-operator-65cd58968f-xmz5w   0/1     Terminating   294 (6m ago)      17h
arango-storage-operator-58b8cb7c78-8dlb7      0/1     Terminating   294 (5m53s ago)   17h
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# kubectl get pods
NAME                                         READY   STATUS        RESTARTS       AGE
arango-deployment-operator-5bd68475b-cdr9z   0/1     Running       0              7s
arango-storage-operator-58b8cb7c78-8dlb7     0/1     Terminating   294 (6m ago)   17h
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# kubectl get pods
NAME                                         READY   STATUS        RESTARTS         AGE
arango-deployment-operator-5bd68475b-cdr9z   0/1     Running       0                9s
arango-storage-operator-58b8cb7c78-8dlb7     0/1     Terminating   294 (6m2s ago)   17h
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# kubectl get pods
NAME                                         READY   STATUS    RESTARTS      AGE
arango-deployment-operator-5bd68475b-cdr9z   0/1     Running   5 (58s ago)   5m59s
arango-storage-operator-5bd4546bb8-g4zr5     0/1     Running   5 (45s ago)   5m45s
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# kubectl get pods
NAME                                         READY   STATUS             RESTARTS      AGE
arango-deployment-operator-5bd68475b-cdr9z   0/1     CrashLoopBackOff   5 (0s ago)    6m1s
arango-storage-operator-5bd4546bb8-g4zr5     0/1     Running            5 (47s ago)   5m47s
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# 
root@k8s-eu-1-master:~# kubectl get pods
NAME                                         READY   STATUS             RESTARTS      AGE
arango-deployment-operator-5bd68475b-cdr9z   0/1     CrashLoopBackOff   5 (6s ago)    6m7s
arango-storage-operator-5bd4546bb8-g4zr5     0/1     Running            5 (53s ago)   5m53s

型
这是arango-deployment.yaml文件：https://drive.google.com/file/d/1VfCjQih5aJUEA4HD9ddsQDrZbLmquWIQ/view?usp=share_link。
这是arango-storage.yaml文件：https://drive.google.com/file/d/1hqHU_H2Wr5VFrJLwM9GDUHF17b7_CYIG/view?usp=sharing
我不得不把kubectl describe pod和kubectl describe pod的输出放在Google Drive的一个txt文件中，因为SOF不接受这么长的文本：https://drive.google.com/file/d/1kZsYeKxOa5aSppV3IdS6c7-e8dnoLiiB/view?usp=share_link
这两个Pod都在同一个节点上：k8s-eu-1-worker-1，显然没有内存问题：https://drive.google.com/file/d/1cjBqezlnJ9vEEnqDlM4NVh8IgcfV2v8T/view?usp=sharing
更新3）
感谢@Sat21343的建议，我看了一下节点的syslog，就在这个节点中的pod从Running变成CrashLoopBackOff之后，这是syslog的最后几行：

Oct 20 15:44:10 k8s-eu-1-worker-1 kubelet[599]: I1020   
15:44:10.594513     599 scope.go:117] "RemoveContainer" containerID="3e618ac247c1392fd6a6d67fad93d187c0dfae4d2cfe77c6a8b244c831dd0852"
Oct 20 15:44:10 k8s-eu-1-worker-1 kubelet[599]: E1020 15:44:10.594988     599 pod_workers.go:1300] "Error syncing pod, skipping" err="failed to \"StartContainer\" for \"operator\" with CrashLoopBackOff: \"back-off 2m40s restarting failed container=operator pod=arango-deployment-operator-5f4d66bd86-4pxkn_default(397bd5c4-2bfc-4ca3-bc7d-bd149932e4b8)\"" pod="default/arango-deployment-operator-5f4d66bd86-4pxkn" podUID="397bd5c4-2bfc-4ca3-bc7d-bd149932e4b8"
Oct 20 15:44:21 k8s-eu-1-worker-1 kubelet[599]: I1020 15:44:21.594619     599 scope.go:117] "RemoveContainer" containerID="3e618ac247c1392fd6a6d67fad93d187c0dfae4d2cfe77c6a8b244c831dd0852"
Oct 20 15:44:21 k8s-eu-1-worker-1 kubelet[599]: E1020 15:44:21.595036     599 pod_workers.go:1300] "Error syncing pod, skipping" err="failed to \"StartContainer\" for \"operator\" with CrashLoopBackOff: \"back-off 2m40s restarting failed container=operator pod=arango-deployment-operator-5f4d66bd86-4pxkn_default(397bd5c4-2bfc-4ca3-bc7d-bd149932e4b8)\"" pod="default/arango-deployment-operator-5f4d66bd86-4pxkn" podUID="397bd5c4-2bfc-4ca3-bc7d-bd149932e4b8"

节点的系统日志的最后几行：https://drive.google.com/file/d/1Ov_vrjsRWrLl2er_QB3yDqkZ7yN19hc-/view?usp=sharing。关于最后几行：我删除了所有的ArangoDB部署只是为了清理一切。
我做错了什么？如何让吊舱保持在“运行”状态？

2条答案

按热度按时间

yduiuuwa1#

从pod的描述中，我可以看到pod被终止，状态码为137，这意味着你还没有为你的容器配置所需的内存。
A 137 code is issued when a process is terminated externally because of its memory consumption. The operating system's out of memory manager (OOM) intervenes to stop the program before it destabilizes the host. Pods running in Kubernetes will show a status of OOMKilled when they encounter a 137 exit code.个
为了解决这个问题，我建议您为容器配置resource Request and Limit。
https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#example-1

赞(0）回复(0）举报 2023-11-15

7rfyedvj2#

经过多次日志分析后，我在kube-arangodb GitHub Repo中打开了一个问题：https://github.com/arangodb/kube-arangodb/issues/1456
但是，正如你在这里看到的：https://github.com/arangodb/kube-arangodb/issues/1456#issuecomment-1779310532，ArangoDB的人认为这不是Arangodb Kubernetes操作员的问题，并在GitHub Repo中关闭了我的问题。
经验教训：解决问题的最好方法是不要把它当作一个需要解决的问题......这很有趣吗？

ArangoDB Pod在Running状态和CrashLoopBackOff状态之间来回切换

2条答案

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