On Sat, Mar 27, 2021 at 4:28 PM Strahil Nikolov <hunter86...@yahoo.com> wrote:
> I had to tune the fence_ipmi recently on some older HPE blades. The > default settings were working, but also returning some output about > problems negotiating the cypher. > As that output could make future version of the fence agent go wild, I > tested several options untill no errors are reported. Maybe the cypher flag > was different, but I think it was '-c'. If I'm wrong , the author of this > thread can check the man page . > > Yes -> 'HandlePowerKey=ignore' . I have never expected ipmi to try > graceful shutdown when I tell it to 'press and hold' or 'cold boot', yet I > never checked the code of fence_ipmi. > fence_ipmilan uses ipmitool to send a poweroff signal. The iLO then sends a virtual power button press, which IIRC goes through ACPI. By default on RHEL 7 and above, if the system is responsive, systemd-logind handles a power key press by initiating a graceful shutdown. You have to disable it from handling the power key press so if you want hard-power-off behavior. > With triple sbd , I mean sbd with 3 block devices. > > Best Regards, > Strahil Nikolov > > On Sat, Mar 27, 2021 at 23:15, Reid Wahl > <nw...@redhat.com> wrote: > > > On Saturday, March 27, 2021, Strahil Nikolov <hunter86...@yahoo.com> > wrote: > > My notes: > > - ilo ssh fence mechanism is crappy due to ilo itself, try to avoid if > possible > > It has been unreliable in my experience. > > > - fence_ipmi requires some tunings (-c flag) and also to disable power > button from the system > > I've rarely, perhaps never, seen a customer have to tune the -c flag. > > By disabling the power button, do you mean setting HandlePowerKey=ignore > in logind.conf? That's not specific to fence_ipmilan, to be clear. > > > - triple 'sbd' is quite reliable.My previous company was using 'softdog' > kernel module for a watchdog device and it never failed us. Yet, it's just > a kernel module (no hardware required) and thus RH do not support such > setup. > > What do you mean by triple sbd? Correct that RH doesn't support using > softdog as an sbd watchdog device. It was determined that it's not reliable > in all situations. It's probably fine much of the time, and I'm glad you > had a smooth experience with it. > > > > On Sat, Mar 27, 2021 at 22:15, Reid Wahl > > <nw...@redhat.com> wrote: > > _______________________________________________ > > Manage your subscription: > > https://lists.clusterlabs.org/mailman/listinfo/users > > > > ClusterLabs home: https://www.clusterlabs.org/ > > > > > -- > Regards, > > > Reid Wahl, RHCA > Senior Software Maintenance Engineer, Red Hat > CEE - Platform Support Delivery - ClusterHA > > -- Regards, Reid Wahl, RHCA Senior Software Maintenance Engineer, Red Hat CEE - Platform Support Delivery - ClusterHA
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