Thanks Andy, I will probably do some simple test in sandbox to check clock synchronization. I am also reading [1] configuring NTP in both host and guests can help with synchronization, do you know if hosts in rackspace use hwclock for system time and NTP is enabled on them?
BR/Luis [1] http://stackoverflow.com/questions/26005056/synchronizing-clock-time-in-host-and-guest-under-kvm > On Apr 18, 2017, at 10:09 AM, Andrew Grimberg via RT > <helpd...@opendaylight.org> wrote: > > On 04/18/2017 09:52 AM, Luis Gomez via RT wrote: >> Forwarding the sync question helpdesk as I am not sure how the VMs get the >> time. > > Instances get their time initialized by the underlying host upon boot. > In many cases their "hardware clock" time may be hard stepped each time > the instance gets sliced in to get an operation turn on the host. > > It's possible to configure NTP on instances, but it's usually considered > non-helpful in general as the time is still going to skew and the amount > of skew really depends upon the load of the host system. > > -Andy- > >>> Begin forwarded message: >>> >>> From: Robert Varga <n...@hq.sk> >>> Subject: [integration-dev] Time sync between CSIT nodes >>> Date: April 18, 2017 at 4:41:31 AM PDT >>> To: "integration-...@lists.opendaylight.org" >>> <integration-...@lists.opendaylight.org> >>> >>> Hello, >>> >>> do the nodes participating in 3node cluster tests have their clocks >>> synchronized? >>> >>> The logs in https://bugs.opendaylight.org/show_bug.cgi?id=8075 seem to >>> have some slight skew, but it's hard to tell whether it is natural lag >>> in local event detection or the nodes have different times. >>> >>> If not, would it be possible to establish NTP peering between the nodes, >>> make sure the clocks are synchronized to a reasonable extent and output >>> 'ntpq peers' at the end of the test? >>> >>> Thanks, >>> Robert >>> >>> >>> _______________________________________________ >>> integration-dev mailing list >>> integration-...@lists.opendaylight.org >>> https://lists.opendaylight.org/mailman/listinfo/integration-dev >> >> > > -- > Andrew J Grimberg > Lead, IT Release Engineering > The Linux Foundation > > > <Mail Attachment>
_______________________________________________ controller-dev mailing list controller-dev@lists.opendaylight.org https://lists.opendaylight.org/mailman/listinfo/controller-dev