Hi I know running a single node setup has single point of failure. However, we do not have resources at this time.
By the way, the problem was not related to CloudStack and was a hardware failure which has been resolved. Best Regards On Wed, Jun 17, 2026 at 9:22 AM Boris Stoyanov <[email protected]> wrote: > I’m assuming running all on one node (management, DB, Usage and KVM host), > this is not ideal and not recommended at all, I’d suggest add another node > and migrate management, db and usage to it, then you can reinstall your > current compute node (also assuming you have shared storage, this will not > work for local storage). > > Regards, > Boris. > > <https://www.cloudstackcollab.org> > *From: *Fariborz Navidan <[email protected]> > *Date: *Tuesday, 16 June 2026 at 1:57 pm > *To: *[email protected] <[email protected]> > *Subject: *Re: URGENT: KVM Host freezes even in emergency mode > > Hi > > This is a single node cloudstack setup. If I take a backup of all VM > volumes and cloudstack database, can I get them running on a fresh > cloudstack installation? > > > Regards > > > On Tue, Jun 16, 2026 at 12:23 PM Boris Stoyanov < > [email protected]> wrote: > > > Hi Fariborz, > > > > This does not look like a Cloudstack issue, assuming this is a compute > > host and storage is somewhere else, why don’t you reinstall it to a stock > > version of the linux distro you are running and try again? > > > > Thanks, > > Boris. > > > > > > <https://www.cloudstackcollab.org> > > *From: *Fariborz Navidan <[email protected]> > > *Date: *Tuesday, 16 June 2026 at 12:25 pm > > *To: *[email protected] <[email protected]> > > *Subject: *URGENT: KVM Host freezes even in emergency mode > > > > Hi Everbody > > > > I have a very odd issue on the KVm host where both agent and management > is > > installed. > > > > Recently I have tried to mirror outbound smtp traffic from a test vm to > IFB > > device to analyze it using zeek for spam filtering. I did the mirroring > > using tc filters. Everything was working before I added a custom libvirt > > hook inside */etc/libvirt/hooks/qemu.d* and restarted libvirtd service to > > add tc filter rule to any new VM being created. > > > > Once I restarted libvirtd host freezed and afterwards everytime host > boots > > it freezes not accepting any input even in emergency mode. When I enter > > emergency mode, it only allows me a few seconds to issue a command and > then > > freezes. This happens even if I mask NetworkManager, libvirtd and > > cloudstack-agent during boot to disable any service that cause system > > freeze > > > > I have reverted back everything but still kernel freezes > > > > As I needed to analyze existing smtp traffic I needed to do on the > > production server but everything is down. > > > > Please help! > > > > Best Regards > > >
