Hello guys, 

I have recently upgraded from ACS 4.5.1 to 4.5.2. The upgrade went well as far 
as I can tell, no error messages. As there was no need to update the systemvm 
templates, i've not bothered to reboot the system vms and virtual routers. 

I am running Ubuntu 14.04 with KVM hosts and using nfs for secondary and ceph 
rbd for primary storage. 

Today i've tried to restart one of the networks with the clean up option and 
noticed that the restart has failed. After a bit of poking around i've 
identified that ACS is no longer able to create virtual routers. ACS just 
showing them with Starting status, but they are not starting on the host 
server. I've looked at the host server, which is suppose to be starting that 
virtual router and there is no sign of the domain being created. The host 
server has the following entries in the agent.log file: 

2015-10-21 10:39:02,140 DEBUG [kvm.resource.LibvirtComputingResource] 
(agentRequest-Handler-3:null) Executing: 
/usr/share/cloudstack-common/scripts/vm/hypervisor/kvm/patchviasocket.pl -n 
r-1405-VM -p 
%template=domP%name=r-1405-VM%eth2ip=XXX.XXX.XXX.53%eth2mask=255.255.255.128%gateway=XXX.XXX.XXX.1%eth0ip=10.1.1.1%eth0mask=255.255.255.0%domain=kaspersky.local%cidrsize=24%dhcprange=10.1.1.1%eth1ip=169.254.3.232%eth1mask=255.255.0.0%type=router%disable_rp_filter=true%dns1=178.248.108.130%dns2=91.224.1.152
 
2015-10-21 10:39:02,172 DEBUG [kvm.resource.LibvirtComputingResource] 
(agentRequest-Handler-3:null) Exit value is 111 
2015-10-21 10:39:02,173 DEBUG [kvm.resource.LibvirtComputingResource] 
(agentRequest-Handler-3:null) ERROR: unable to connect to 
/var/lib/libvirt/qemu/r-1405-VM.agent - Connection refused 
2015-10-21 10:39:02,174 DEBUG [kvm.resource.LibvirtComputingResource] 
(agentRequest-Handler-3:null) passcmd failed:ERROR: unable to connect to 
/var/lib/libvirt/qemu/r-1405-VM.agent - Connection refused 



I've checked ssvm and it seems to be running perfectly well. The 
/usr/local/cloud/systemvm/ssvm-check.sh script produces no warnings or errors, 
the nfs mount point is mounted and writable. 

I've also tried to create a new vm with a new network and that vm is not 
starting because ACS is unable to start the virtual router for the network. 


Any idea how to get this issue resolved? 

Thanks 

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