Insufficient resources: The resources within the cluster, such as CPU and memory, are not enough to meet the resource requests of the Pod, leading to the inability to schedule the Pod.
Scheduler issue: The scheduler is unable to find a suitable node to schedule the Pod, potentially due to insufficient node resources or incorrect scheduling strategy configurations.
Network issue: The network plugin required by the Pod is not properly configured or running, causing the Pod to fail to create successfully.
Mirror issue: The required image for the Pod cannot be downloaded or loaded, possibly due to incorrect image address or network issues.
Storage issue: The storage volume required by the Pod cannot be correctly mounted on the node, resulting in the failure of Pod creation.
Security policy: Security policies within the cluster restrict the creation or scheduling of Pods, resulting in Pods being in a Pending state.
