FailedCreatePodSandBox cloud resource_error ai_generated true

警告 FailedCreatePodSandBox：创建Pod沙箱失败：rpc错误：代码=未知 描述=无法为Pod设置沙箱容器""网络：networkPlugin cni无法为Pod "my-pod_default"设置网络：网络中没有可用IP地址

Warning FailedCreatePodSandBox: Failed to create pod sandbox: rpc error: code = Unknown desc = failed to set up sandbox container "" network for pod "my-pod": networkPlugin cni failed to set up pod "my-pod_default" network: no IP addresses available in network

ID: cloud/azure-aks-pod-creation-pending-no-ip

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85%修复率
87%置信度
1证据数
2023-09-20首次发现

版本兼容性

版本状态引入弃用备注
AKS 1.26 active — — —
AKS 1.27 active — — —
Azure CNI active — — —

根因分析

Azure Kubernetes Service (AKS)节点池已耗尽子网IP地址范围，阻止新Pod分配IP地址。

English

Azure Kubernetes Service (AKS) node pool has exhausted its subnet IP address range, preventing new pods from being assigned IP addresses.

generic

官方文档

https://learn.microsoft.com/en-us/azure/aks/use-multiple-node-pools

解决方案

  1. Increase the subnet size by adding a new subnet and updating the AKS cluster to use it. First, create a new subnet: `az network vnet subnet create --resource-group my-rg --vnet-name my-vnet --name new-subnet --address-prefixes 10.0.1.0/24` Then update the node pool: `az aks nodepool update --resource-group my-rg --cluster-name my-cluster --name my-nodepool --vnet-subnet-id /subscriptions/.../subnets/new-subnet`
  2. Delete unused pods to free IPs. Use `kubectl delete pod <pod-name>` for non-critical pods. Then monitor with `kubectl get pods -o wide` to see IP reclamation.

无效尝试

常见但无效的做法:

  1. Restart the AKS cluster 95% 失败

    Restarting does not free up IP addresses; the subnet is still full.

  2. Scale down the node pool to reduce node count 80% 失败

    Scaling down reduces nodes but does not reclaim IPs from existing pods. Pod IPs remain allocated until pods are deleted.