apache
Problem with vRouter after Livepatching from 4.20.1.0 -> 4.20.2.0
problem
The existing vRouter have been live patched from 4.20.1.0 to 4.20.2.0, everything shows up fine in the UI. The systemvm template used by the vRouter still shows 4.20.1.0, but the software version is correctly displayed with 4.20.2.0 Now, when i tried to start a vm, it failed with an error "Network is unavailable. Please contact administrator".
The cloudstack management servers log shows this
2025-12-09 11:40:35,705 ERROR [c.c.a.ApiAsyncJobDispatcher] (API-Job-Executor-92:[ctx-04bdbebb, job-717188]) (logid:8225e4c6) Unexpected exception while executing org.apache.cloudstack.api.command.admin.vm.StartVMCmdByAdmin com.cloud.utils.exception.CloudRuntimeException: Network is unavailable. Please contact administrator
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Caused by: com.cloud.exception.ResourceUnavailableException: Resource [VirtualRouter:5014] is unreachable: Unable to send command. Router requires upgrade
after rebooting the vRouter everything started working again. Live patching seems to be broken here, i had a similar effect a few days ago as well. After a reboot, the vRouter also uses the newer systemvm template 4.20.2.0
we are on Ubuntu 24.04, our vRouters are redundant.
@jgotteswinter
can you check the global setting minreq.sysvmtemplate.version ?
if it is 4.20.2.0, change it to 4.20.1.0
yes its indeed 4.20.2.0, i guess this has been set by the update routines? I did not change it
@jgotteswinter , has the workaround @weizhouapache gave worked for you?
