Check the following items:

During the node upgrade, the key disks store the upgrade component package, and the /tmp directory stores temporary files.

Scenario 1: Master node disks fail to meet the upgrade requirements.
Contact technical support.
Scenario 2: Worker node disks fail to meet the upgrade requirements.
Check the usage of each key disk. After ensuring that the available space meets the requirements, check again.
- Disk partition of Docker: at least 1 GB of available space
```
df -h /var/lib/docker
```
- Disk partition of containerd: at least 1 GB of available space
```
df -h /var/lib/containerd
```
- Disk partition of kubelet: at least 1 GB of available space
```
df -h /mnt/paas/kubernetes/kubelet
```
- System disk: at least 2 GB of available space
```
df -h /
```
Scenario 3: The available space of the /tmp directory on worker nodes is insufficient.
Run the following command to check the usage of the file system where the /tmp directory is located. Ensure that the space is greater than 500 MB and check again.
```
df -h /tmp
```

Node Disks