On 15.10.2021 13:24, Klaus Wenninger wrote: > On Fri, Oct 15, 2021 at 12:01 PM Andrei Borzenkov <arvidj...@gmail.com> > wrote: > >> On Fri, Oct 15, 2021 at 9:25 AM Klaus Wenninger <kwenn...@redhat.com> >> wrote: >> >>> Main pain-point here is that ping-RA allows us to configure the count of >> pings sent, but it >>> is just using the exit-value from ping that becomes negative already >> when one of the >>> answers is missing. >> >> Use fping instead? Which is supported by ping RA and should behave >> exactly as needed - report host alive if at least one reply was >> received. >> > I like fping but it having some reputation as DOS tool not everybody might > be fine installing it. > And we will still have something that would be fine with at least a 50% > packet > loss, which as well might not be acceptable to qualify a host as reachable. > But of course we still can tweak it even with the current implementation to > let's say a loss <20% by giving the same host 5 times and having > the limit set to 4. > >> >> Maybe when using ping RA could also parse ping output instead of >> relying on exit status. >> > as the fence-agent referenced is doing ;-) >
Actually simply having inner loop from 1 to $OCF_RESKEY_attempts with "ping -c 1" is more simple and portable. But I am not convinced it is worth the troubles. _______________________________________________ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/