<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">yes, I just have idea, he probably have managed switch or fabric...<br class=""><div class="">
<br class="Apple-interchange-newline"><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">S pozdravem Kristián Feldsam</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Tel.: +420 773 303 353, +421 944 137 535</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">E-mail.: <a href="mailto:support@feldhost.cz" class="">support@feldhost.cz</a></span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><a href="http://www.feldhost.cz" class="">www.feldhost.cz</a> -<span class="Apple-converted-space"> </span></span><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-weight: bold;" class="">Feld</span><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Host</span><span style="color: rgb(0, 0, 0); font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">™</span><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><span class="Apple-converted-space"> </span>– profesionální hostingové a serverové služby za adekvátní ceny.</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">FELDSAM s.r.o.</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">V rohu 434/3</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Praha 4 – Libuš, PSČ 142 00</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">IČ: 290 60 958, DIČ: CZ290 60 958</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">C 200350 vedená u Městského soudu v Praze</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Banka: Fio banka a.s.</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Číslo účtu: 2400330446/2010</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">BIC: FIOBCZPPXX</span><br style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="color: rgb(0, 0, 0); font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">IBAN: CZ82 2010 0000 0024 0033 0446</span>
</div>
<br class=""><div><blockquote type="cite" class=""><div class="">On 24 Jul 2017, at 22:18, Klaus Wenninger <<a href="mailto:kwenning@redhat.com" class="">kwenning@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
<div class="moz-cite-prefix">On 07/24/2017 09:46 PM, Kristián
Feldsam wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:3377E551-4048-48E7-8B6A-51D2A69BCB83@feldhost.cz" class="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class="">
so why to use some other fencing method like disablink port on
switch, so nobody can acces faultly node and write data to it. it
is common practice too.<br class="">
</blockquote>
<br class="">
Well don't get me wrong here. I don't want to hard-sell sbd.<br class="">
Just though that very likely requirements that prevent usage<br class="">
of a remote-controlled power-switch will make access<br class="">
to a switch to disable the ports unusable as well.<br class="">
And if a working qdevice setup is there already the gap between<br class="">
what he thought he would get from qdevice and what he actually<br class="">
had just matches exactly quorum-based-watchdog-fencing.<br class="">
<br class="">
But you are of course right.<br class="">
I don't really know the scenario.<br class="">
Maybe fabric fencing is the perfect match - good to mention it<br class="">
here as a possibility.<br class="">
<br class="">
Regards,<br class="">
Klaus<br class="">
<br class="">
<blockquote type="cite" cite="mid:3377E551-4048-48E7-8B6A-51D2A69BCB83@feldhost.cz" class="">
<div class="">
<br class="Apple-interchange-newline">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">S pozdravem Kristián Feldsam</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Tel.: +420 773 303 353, +421 944 137 535</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">E-mail.: <a href="mailto:support@feldhost.cz" class="" moz-do-not-send="true">support@feldhost.cz</a></span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><a href="http://www.feldhost.cz/" class="" moz-do-not-send="true">www.feldhost.cz</a> -<span class="Apple-converted-space"> </span></span><span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-weight: bold;" class="">Feld</span><span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Host</span><span style="font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">™</span><span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><span class="Apple-converted-space"> </span>–
profesionální hostingové a serverové služby za adekvátní ceny.</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">FELDSAM s.r.o.</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">V rohu 434/3</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Praha 4 – Libuš, PSČ 142 00</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">IČ: 290 60 958, DIČ: CZ290 60 958</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">C 200350 vedená u Městského soudu v
Praze</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Banka: Fio banka a.s.</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Číslo účtu: 2400330446/2010</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">BIC: FIOBCZPPXX</span><br style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Baskerville; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">IBAN: CZ82 2010 0000 0024 0033 0446</span>
</div>
<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On 24 Jul 2017, at 21:16, Klaus Wenninger <<a href="mailto:kwenning@redhat.com" class="" moz-do-not-send="true">kwenning@redhat.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="moz-cite-prefix" style="font-family:
Baskerville; font-size: 16px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);">On 07/24/2017 08:27
PM, Prasad, Shashank wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:8A8F98BF0CDFD5438985D4397358E6C7ECC85F@idc.vanu.com" style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto; word-spacing:
0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<div class="WordSection1" style="page: WordSection1;">
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">My
understanding is that SBD will need a shared
storage between clustered nodes.<o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">And
that, SBD will need at least 3 nodes in a cluster,
if using w/o shared storage.</span></div>
</div>
</blockquote>
<br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">Haven't tried to be honest but reason for 3 nodes
is that without</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">shared disk you need a real quorum-source and not
something</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">'faked' as with 2-node-feature in corosync.</span><br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">But I don't see anything speaking against getting
the proper</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">quorum via qdevice instead with a third full
cluster-node.</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<blockquote type="cite" cite="mid:8A8F98BF0CDFD5438985D4397358E6C7ECC85F@idc.vanu.com" style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto; word-spacing:
0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<div class="WordSection1" style="page: WordSection1;">
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">Therefore,
for systems which do NOT use shared storage between
1+1 HA clustered nodes, SBD may NOT be an option.<o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">Correct
me, if I am wrong.<o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">For
cluster systems using the likes of iDRAC/IMM2
fencing agents, which have redundant but shared
power supply units with the nodes, the normal
fencing mechanisms should work for all resiliency
scenarios, but for IMM2/iDRAC are being NOT
reachable for whatsoever reasons. And, to bail out
of those situations in the absence of SBD, I believe
using used-defined failover hooks (via scripts) into
Pacemaker Alerts, with sudo permissions for
‘hacluster’, should help.</span></div>
</div>
</blockquote>
<br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">If you don't see your fencing device assuming
after some time</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">the the corresponding node will probably be down
is quite risky</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">in my opinion.</span><br style="font-family:
Baskerville; font-size: 16px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">But why not assure it to be down using a
watchdog?</span><br style="font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<blockquote type="cite" cite="mid:8A8F98BF0CDFD5438985D4397358E6C7ECC85F@idc.vanu.com" style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; orphans:
auto; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto; word-spacing:
0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<div class="WordSection1" style="page: WordSection1;">
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">Thanx.<o:p class=""></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="border-style: none none none solid;
border-left-width: 1.5pt; border-left-color: blue;
padding: 0in 0in 0in 4pt;" class="">
<div class="">
<div style="border-style: solid none none;
border-top-width: 1pt; border-top-color: rgb(181,
196, 223); padding: 3pt 0in 0in;" class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><b class=""><span style="font-size:
10pt; font-family: Tahoma, sans-serif;
color: windowtext;" class="">From:</span></b><span style="font-size: 10pt; font-family: Tahoma,
sans-serif; color: windowtext;" class=""><span class="Apple-converted-space"> </span>Klaus
Wenninger [<a class="moz-txt-link-freetext" href="mailto:kwenning@redhat.com" style="color: purple; text-decoration:
underline;" moz-do-not-send="true">mailto:kwenning@redhat.com</a>]<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Monday,
July 24, 2017 11:31 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Cluster
Labs - All topics related to open-source
clustering welcomed; Prasad, Shashank<br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re:
[ClusterLabs] Two nodes cluster issue<o:p class=""></o:p></span></div>
</div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
<div class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class="">On 07/24/2017 07:32 PM, Prasad, Shashank
wrote:<o:p class=""></o:p></div>
</div>
<blockquote style="margin-top: 5pt; margin-bottom:
5pt;" class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">Sometimes IPMI fence devices
use shared power of the node, and it cannot be
avoided.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">In such scenarios the HA
cluster is NOT able to handle the power failure
of a node, since the power is shared with its
own fence device.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">The failure of IPMI based
fencing can also exist due to other reasons
also.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">A failure to fence the
failed node will cause cluster to be marked
UNCLEAN.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">To get over it, the
following command needs to be invoked on the
surviving node.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">pcs stonith confirm
<failed_node_name> --force</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">This can be automated by
hooking a recovery script, when the the Stonith
resource ‘Timed Out’ event.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">To be more specific, the
Pacemaker Alerts can be used for watch for
Stonith timeouts and failures.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt;
font-family: Calibri, sans-serif; color: rgb(31,
73, 125);" class="">In that script, all that’s
essentially to be executed is the aforementioned
command.</span><o:p class=""></o:p></div>
</blockquote>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><br class="">
If I get you right here you can disable fencing then
in the first place.<br class="">
Actually quorum-based-watchdog-fencing is the way to
do this in a<br class="">
safe manner. This of course assumes you have a
proper source for<br class="">
quorum in your 2-node-setup with e.g. qdevice or
using a shared<br class="">
disk with sbd (not directly pacemaker quorum here
but similar thing<br class="">
handled inside sbd).<br class="">
<br class="">
<br class="">
<o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">Since
the alerts are issued from ‘hacluster’ login, sudo
permissions for ‘hacluster’ needs to be
configured.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class="">Thanx.</span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125);" class=""> </span><o:p class=""></o:p></div>
<div style="border-style: none none none solid;
border-left-width: 1.5pt; border-left-color: blue;
padding: 0in 0in 0in 4pt;" class="">
<div class="">
<div style="border-style: solid none none;
border-top-width: 1pt; border-top-color:
rgb(181, 196, 223); padding: 3pt 0in 0in;" class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><b class=""><span style="font-size:
10pt; font-family: Tahoma, sans-serif;
color: windowtext;" class="">From:</span></b><span style="font-size: 10pt; font-family: Tahoma,
sans-serif; color: windowtext;" class=""><span class="Apple-converted-space"> </span>Klaus
Wenninger [<a href="mailto:kwenning@redhat.com" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class="">mailto:kwenning@redhat.com</a>]<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Monday,
July 24, 2017 9:24 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Kristián
Feldsam; Cluster Labs - All topics related
to open-source clustering welcomed<br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re:
[ClusterLabs] Two nodes cluster issue</span><o:p class=""></o:p></div>
</div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""> <o:p class=""></o:p></div>
<div class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class="">On 07/24/2017 05:37 PM, Kristián
Feldsam wrote:<o:p class=""></o:p></div>
</div>
<blockquote style="margin-top: 5pt; margin-bottom:
5pt;" class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class="">I personally think that power off node
by switched pdu is more safe, or not?<o:p class=""></o:p></div>
</blockquote>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><br class="">
True if that is working in you environment. If you
can't do a physical setup<br class="">
where you aren't simultaneously loosing connection
to both your node and<br class="">
the switch-device (or you just want to cover cases
where that happens)<br class="">
you have to come up with something else.<br class="">
<br class="">
<br class="">
<br class="">
<o:p class=""></o:p></div>
<div class="">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""><br class="">
<span style="font-family: Baskerville, serif;" class="">S pozdravem Kristián Feldsam<br class="">
Tel.: +420 773 303 353, +421 944 137 535<br class="">
E-mail.:<span class="Apple-converted-space"> </span><a href="mailto:support@feldhost.cz" moz-do-not-send="true" style="color: purple;
text-decoration: underline;" class="">support@feldhost.cz</a><br class="">
<br class="">
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text-decoration: underline;" class="">www.feldhost.cz</a><span class="Apple-converted-space"> </span>-<span class="apple-converted-space"> </span><b class="">Feld</b>Host</span>™<span class="apple-converted-space"><span style="font-family: Baskerville, serif;" class=""> </span></span><span style="font-family: Baskerville, serif;" class="">– profesionální hostingové a
serverové služby za adekvátní ceny.<br class="">
<br class="">
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IČ: 290 60 958, DIČ: CZ290 60 958<br class="">
C 200350 vedená u Městského soudu v Praze<br class="">
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Banka: Fio banka a.s.<br class="">
Číslo účtu: 2400330446/2010<br class="">
BIC: FIOBCZPPXX<br class="">
IBAN: CZ82 2010 0000 0024 0033 0446</span><o:p class=""></o:p></div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""> <o:p class=""></o:p></div>
<div class="">
<blockquote style="margin-top: 5pt; margin-bottom:
5pt;" class="">
<div class="">
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif;" class="">On 24 Jul 2017, at
17:27, Klaus Wenninger <<a href="mailto:kwenning@redhat.com" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class="">kwenning@redhat.com</a>>
wrote:<o:p class=""></o:p></div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""> <o:p class=""></o:p></div>
<div class="">
<div class="">
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif; background-color: white;" class=""><span style="font-family:
Baskerville, serif;" class="">On
07/24/2017 05:15 PM, Tomer Azran wrote:</span><o:p class=""></o:p></div>
</div>
<blockquote style="margin-top: 5pt;
margin-bottom: 5pt; font-variant-caps:
normal; text-align: start;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
word-spacing: 0px;" class="">
<div class="">
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif; background-color: white;" class=""><span style="font-size: 11pt;
font-family: Arial, sans-serif;" class="">I still don't understand why
the qdevice concept doesn't help on
this situation. Since the master node
is down, I would expect the quorum to
declare it as dead.</span><o:p class=""></o:p></div>
</div>
<div class="">
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif; background-color: white;" class=""><span style="font-size: 11pt;
font-family: Arial, sans-serif;" class="">Why doesn't it happens?</span><o:p class=""></o:p></div>
</div>
</blockquote>
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif;" class=""><span style="font-family: Baskerville, serif;" class=""><br class="">
That is not how quorum works. It just
limits the decision-making to the quorate
subset of the cluster.<br class="">
Still the unknown nodes are not sure to be
down.<br class="">
That is why I suggested to have
quorum-based watchdog-fencing with sbd.<br class="">
That would assure that within a certain
time all nodes of the non-quorate part<br class="">
of the cluster are down.<br class="">
<br class="">
<br class="">
<br class="">
</span><o:p class=""></o:p></div><p class="MsoNormal" style="margin: 0in 0in
12pt; font-size: 12pt; font-family: 'Times
New Roman', serif;"><span style="font-family: Baskerville, serif;" class=""><br class="">
<br class="">
<br class="">
</span><o:p class=""></o:p></p>
<div class=""><p class="MsoNormal" style="margin: 0in 0in
12pt; font-size: 12pt; font-family: 'Times
New Roman', serif;"><span style="font-family: Baskerville, serif;" class="">On Mon, Jul 24, 2017 at 4:15 PM
+0300, "Dmitri Maziuk"<span class="apple-converted-space"> </span><<a href="mailto:dmitri.maziuk@gmail.com" target="_blank" moz-do-not-send="true" style="color: purple; text-decoration:
underline;" class="">dmitri.maziuk@gmail.com</a>><span class="apple-converted-space"> </span>wrote:</span><o:p class=""></o:p></p>
<div class="">
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">On 2017-07-24 07:51, Tomer Azran wrote:<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">> We don't have the ability to use it.<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">> Is that the only solution?<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">No, but I'd recommend thinking about it first. Are you sure you will <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">care about your cluster working when your server room is on fire? 'Cause <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">unless you have halon suppression, your server room is a complete <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">write-off anyway. (Think water from sprinklers hitting rich chunky volts <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">in the servers.)<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Dima<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">_______________________________________________<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Users mailing list: <a href="mailto:Users@clusterlabs.org" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">Users@clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""><a href="http://lists.clusterlabs.org/mailman/listinfo/users" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://lists.clusterlabs.org/mailman/listinfo/users</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Project Home: <a href="http://www.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Bugs: <a href="http://bugs.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://bugs.clusterlabs.org</a><o:p class=""></o:p></pre>
</div>
</div>
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif;" class=""><span style="font-family: Baskerville, serif;" class=""><br class="">
<br class="">
<br class="">
<br class="">
</span><o:p class=""></o:p></div>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">_______________________________________________<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Users mailing list: <a href="mailto:Users@clusterlabs.org" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">Users@clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""><a href="http://lists.clusterlabs.org/mailman/listinfo/users" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://lists.clusterlabs.org/mailman/listinfo/users</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Project Home: <a href="http://www.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Bugs: <a href="http://bugs.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://bugs.clusterlabs.org</a><o:p class=""></o:p></pre>
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif; font-variant-caps: normal;
text-align: start;
-webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255);
word-spacing: 0px;" class=""><span style="font-family: Baskerville, serif;" class=""> </span><o:p class=""></o:p></div>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white; font-variant-caps: normal; text-align: start; -webkit-text-stroke-width: 0px; word-spacing: 0px;" class=""><span style="font-size: 12pt;" class="">-- </span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class="">Klaus Wenninger</span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class=""> </span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class="">Senior Software Engineer, EMEA ENG Openstack Infrastructure</span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class=""> </span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class="">Red Hat</span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class=""> </span><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New'; background-color: white;" class=""><span style="font-size: 12pt;" class=""><a href="mailto:kwenning@redhat.com" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">kwenning@redhat.com</a> </span><o:p class=""></o:p></pre>
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif;" class=""><span style="font-family: Baskerville, serif;" class="">_______________________________________________<br class="">
Users mailing list:<span class="apple-converted-space"> </span></span><a href="mailto:Users@clusterlabs.org" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class=""><span style="font-family:
Baskerville, serif; background-color:
white; background-position: initial
initial; background-repeat: initial
initial;" class="">Users@clusterlabs.org</span></a><span style="font-family: Baskerville, serif;" class=""><br class="">
</span><a href="http://lists.clusterlabs.org/mailman/listinfo/users" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class=""><span style="font-family:
Baskerville, serif;" class="">http://lists.clusterlabs.org/mailman/listinfo/users</span></a><span style="font-family: Baskerville, serif;" class=""><br class="">
<br class="">
Project Home:<span class="apple-converted-space"> </span></span><a href="http://www.clusterlabs.org/" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class=""><span style="font-family:
Baskerville, serif; background-color:
white; background-position: initial
initial; background-repeat: initial
initial;" class="">http://www.clusterlabs.org</span></a><span style="font-family: Baskerville, serif;" class=""><br class="">
Getting started:<span class="apple-converted-space"> </span></span><a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class=""><span style="font-family:
Baskerville, serif;" class="">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</span></a><span style="font-family: Baskerville, serif;" class=""><br class="">
Bugs:<span class="apple-converted-space"> </span></span><a href="http://bugs.clusterlabs.org/" moz-do-not-send="true" style="color:
purple; text-decoration: underline;" class=""><span style="font-family:
Baskerville, serif; background-color:
white; background-position: initial
initial; background-repeat: initial
initial;" class="">http://bugs.clusterlabs.org</span></a><o:p class=""></o:p></div>
</div>
</blockquote>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif;" class=""> <o:p class=""></o:p></div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
font-family: 'Times New Roman', serif;" class=""><br class="">
<br class="">
<br class="">
<o:p class=""></o:p></div>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">_______________________________________________<o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Users mailing list: <a href="mailto:Users@clusterlabs.org" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">Users@clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""><a href="http://lists.clusterlabs.org/mailman/listinfo/users" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://lists.clusterlabs.org/mailman/listinfo/users</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""><o:p class=""> </o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Project Home: <a href="http://www.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Getting started: <a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class="">Bugs: <a href="http://bugs.clusterlabs.org/" moz-do-not-send="true" style="color: purple; text-decoration: underline;" class="">http://bugs.clusterlabs.org</a><o:p class=""></o:p></pre>
<pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';" class=""> <o:p class=""></o:p></pre>
</div>
</div>
</blockquote>
<br style="font-family: Baskerville; font-size: 16px;
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<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
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255, 255); float: none; display: inline !important;" class="">Getting started:<span class="Apple-converted-space"> </span></span><a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf" style="color: purple; text-decoration: underline;
font-family: Baskerville; font-size: 16px; font-style:
normal; font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width:
0px; background-color: rgb(255, 255, 255);" class="" moz-do-not-send="true">http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf</a><br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
<span style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255); float: none; display: inline !important;" class="">Bugs:<span class="Apple-converted-space"> </span></span><a href="http://bugs.clusterlabs.org/" style="color: purple;
text-decoration: underline; font-family: Baskerville;
font-size: 16px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="" moz-do-not-send="true">http://bugs.clusterlabs.org</a><br style="font-family: Baskerville; font-size: 16px;
font-style: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; text-align:
start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255,
255, 255);" class="">
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