Re: [ClusterLabs] Antw: Re: Two node cluster goes into split brain scenario during CPU intensive tasks

2019-07-01 Thread Jan Pokorný
On 01/07/19 13:26 +0200, Ulrich Windl wrote: Jan Pokorný schrieb am 27.06.2019 um 12:02 in Nachricht <20190627100209.gf31...@redhat.com>: >> On 25/06/19 12:20 ‑0500, Ken Gaillot wrote: >>> On Tue, 2019‑06‑25 at 11:06 +, Somanath Jeeva wrote: >>> Addressing the root cause, I'd first

[ClusterLabs] Antw: Re: Two node cluster goes into split brain scenario during CPU intensive tasks

2019-07-01 Thread Ulrich Windl
>>> Jan Pokorný schrieb am 27.06.2019 um 12:02 in Nachricht <20190627100209.gf31...@redhat.com>: > On 25/06/19 12:20 ‑0500, Ken Gaillot wrote: >> On Tue, 2019‑06‑25 at 11:06 +, Somanath Jeeva wrote: >> Addressing the root cause, I'd first make sure corosync is running at >> real‑time priority

[ClusterLabs] Antw: Re: Two node cluster goes into split brain scenario during CPU intensive tasks

2019-07-01 Thread Ulrich Windl
>>> Somanath Jeeva schrieb am 25.06.2019 um 13:06 in Nachricht > I have not configured fencing in our setup . However I would like to know if > the split brain can be avoided when high CPU occurs. It seems you like to ride a bicycle with crossed arms while trying to avoid to fall ;-) > >

[ClusterLabs] Antw: Re: Two node cluster goes into split brain scenario during CPU intensive tasks

2019-07-01 Thread Ulrich Windl
>>> Ken Gaillot schrieb am 24.06.2019 um 16:57 in Nachricht <95f51b52283d05bbd948e4508c406d7ccb64.ca...@redhat.com>: > On Mon, 2019‑06‑24 at 08:52 +0200, Jan Friesse wrote: >> Somanath, >> >> > Hi All, >> > >> > I have a two node cluster with multicast (udp) transport . The >> > multicast

[ClusterLabs] Antw: Re: Two node cluster goes into split brain scenario during CPU intensive tasks

2019-07-01 Thread Ulrich Windl
>>> Jan Friesse schrieb am 24.06.2019 um 08:52 in Nachricht : > Somanath, > >> Hi All, >> >> I have a two node cluster with multicast (udp) transport . The multicast IP > used in 224.1.1.1 . > > Would you mind to give a try to UDPU (unicast)? For two node cluster > there is going to be no