求助：Spain2节点实例持续卡在“rebooting”状态无法恢复

Hey there, sorry to hear you're stuck with that instance hanging in the "rebooting" state on the Spain2 node—let's work through some actionable steps to get this sorted out:

Step 1: Verify the Spain2 Node's Compute Service Status #

First, check if the core compute service on the Spain2 node is running properly. Run this command to confirm:

openstack compute service list --host Spain2

Look for the nova-compute entry—if its status isn't up or state isn't enabled, the node might be unresponsive, which blocks instance state changes. If the service is down, restart it with:

sudo systemctl restart nova-compute

Step 2: Force Stop the Stuck Instance #

Regular shut off commands might not bypass the stuck state, so try a force stop to terminate the instance cleanly:

openstack server stop --force <your-instance-id>

Alternatively, if you use the older nova CLI:

nova stop --force <your-instance-id>

Once it shows as SHUTOFF, attempt to start it again with openstack server start <your-instance-id>.

Step 3: Check Host Resource Utilization on Spain2 #

Resource exhaustion on the node can often prevent instances from transitioning states. Log into the Spain2 node and run these commands to check CPU, memory, and disk space:

# Check real-time CPU/memory usage
top
# Check disk space availability
df -h

If you see high CPU usage (90%+), low free memory, or full disks, freeing up resources (e.g., terminating unused instances, clearing old logs) might resolve the issue.

Step 4: Inspect Instance and Node Logs #

Dig into logs to pinpoint the root cause:

• Get the instance's console log to spot boot/reboot errors:

  openstack console log show <your-instance-id>
  

• Check the nova-compute logs on the Spain2 node for instance-specific errors:

  sudo tail -n 100 /var/log/nova/nova-compute.log
  

Look for keywords like IO error, VM process stuck, or instance lock—these can point to issues like corrupted disk images or hung virtual machine processes.

Step 5: Manually Destroy the VM Process on Spain2 #

If all else fails, you can directly terminate the stuck virtual machine process on the node:

1. List all VMs on the node to find your instance's name:

   virsh list --all
   

2. Force destroy the stuck VM:

   virsh destroy <instance-name>
   

3. Back in your OpenStack control plane, refresh the instance state or re-launch it.

If none of these steps fix the problem, it’s likely a deeper node-level issue (e.g., hypervisor failure, network partitioning) that will require reaching out to your cloud infrastructure team for further support.

内容的提问来源于stack exchange，提问作者Alvaro Sainz-Pardo