Hi Yuri, Whilst testing this, I killed off the Host Masters approx. 10 times, and on about 2 occasions the old Pool Master did automatically re-join as a slave, but on the other 8 occasions they did not.
I think it depended on how long they were down for, so a simple reset of the host was OK, but if it was down for say 10 mins then the recovery steps were required etc. I have applied patches up to and including XS62ESP1014 but you say you have only applied up to XS62E014 which is pre SP1 and more importantly pre XS62ESP1004 which is the patch which triggers the requirement for this configuration. Regards Geoff Higginbottom D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 [email protected] -----Original Message----- From: Yuri Kogun [mailto:[email protected]] Sent: 07 January 2015 17:06 To: [email protected] Subject: RE: Xenserver pool HA in Cloudstack Hi Geoff, Great article. Just wanted let you know that I tested the configuration on my test environment and everything worked as you described, apart from the 'Recovering from Host Failures' bit. In my case the former master came up after reboot and joined the pool as a slave. No manual steps were needed. Below is the extract from the messages on the host. Jan 7 16:53:36 dcv-xenserver-h31 xsconsole: Configure Management Interface found no PIFs to present Jan 7 16:53:42 dcv-xenserver-h31 xsconsole: Configure Management Interface found no PIFs to present Jan 7 16:53:47 dcv-xenserver-h31 xha[6193]: The local host has transitioned to online state. Jan 7 16:53:48 dcv-xenserver-h31 xha[6193]: propose_master returns FALSE. Jan 7 16:53:48 dcv-xenserver-h31 xha[6193]: propose_master returns FALSE. Jan 7 16:53:48 dcv-xenserver-h31 xapi: [ info|dcv-xenserver-h31|0 thread_zero|Checking HA configuration D:e685fe6c5de9|xapi_ha] ha_propose_master failed: looking for another master Jan 7 16:53:48 dcv-xenserver-h31 xapi: [ info|dcv-xenserver-h31|0 thread_zero|Checking HA configuration D:e685fe6c5de9|xapi_ha] This node will become the slave of host 17aa5709-ec88-4e9a-93ad-0adc1b43c32f (192.168.56.30) Jan 7 16:53:49 dcv-xenserver-h31 xsconsole: Local shell Jan 7 16:53:58 dcv-xenserver-h31 xapi: [ warn|dcv-xenserver-h31|17||xapi_fuse] Caught an exception flushing database (perhaps it hasn't been initialised yet): INTERNAL_ERROR: [ Failure("hd") ]; restarting immediately It could be because I have applied patches up to XS62E014 and something was fixed. Best regards Yuri ---------------------------------------- > From: [email protected] > To: [email protected] > Subject: RE: Xenserver pool HA in Cloudstack > Date: Tue, 6 Jan 2015 16:48:19 +0000 > > @Suresh, > > The link you referenced is a design doc for a possible future feature, this > is NOT in CloudStack as of today. > > @Sonali, > > As promised, here is a link to the article I have been working on today > covering the use of XenServer HA with CloudStack, > > http://shapeblue.com/cloudstack/xenserver-native-ha-with-cloudstack/ > > In summary if you have installed XS62ESP1004 then you MUST start using > XenServer HA on your XenServer Clusters, if you don’t, and the Pool Master > goes down, no new Pool Master will be elected. > > Regards > > Geoff Higginbottom > > D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 > > [email protected] > > -----Original Message----- > From: Suresh Sadhu [mailto:[email protected]] > Sent: 06 January 2015 16:06 > To: [email protected] > Subject: RE: Xenserver pool HA in Cloudstack > > From xen6.2 onwards cloudstack deponds(leverages) on xen native HA > capabilities Please check below link: > https://cwiki.apache.org/confluence/display/CLOUDSTACK/User+VM+HA+using+native+XS+HA+capabilities > > > regards > sadhu > > -----Original Message----- > From: Somesh Naidu [mailto:[email protected]] > Sent: 06 January 2015 21:25 > To: [email protected] > Subject: RE: Xenserver pool HA in Cloudstack > > Sonali, what version of XS are you using? > > -----Original Message----- > From: Geoff Higginbottom [mailto:[email protected]] > Sent: Tuesday, January 06, 2015 9:03 AM > To: [email protected] > Subject: RE: Xenserver pool HA in Cloudstack > > Sonali, > > There have been some changes recently and as luck would have it today I am > working on a blog article for www.shapeblue.com covering the correct way to > configure HA in XenServer. It's due to go live later today, I'll respond to > this thread once it's live. > > Regards > > Geoff Higginbottom > > D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 > > [email protected] > > -----Original Message----- > From: Sonali Jadhav [mailto:[email protected]] > Sent: 06 January 2015 13:27 > To: [email protected] > Subject: Xenserver pool HA in Cloudstack > > Hi, > > I have Xenserver cluster setup with 4 Hosts in it. I was wondering about HA > configuration of xenserver pool. But at some places I saw that cloudstack HA > and Xenserver HA both are different . And One shouldn't use Xenserver HA, > since Cloudstack HA is by default active. Is it true? > > Yours sincerely, > > Sonali Jadhav | System Administrator > Nordiska Servercentralen > Direct: (Sweden) +46 7 52472074 | (India) +91 9892837889 Skype ID: > sonali.jadhav.sj > E-mail: [email protected]<mailto:[email protected]> > Nordiska Servercentralen AB > Snövitsvägen 5 > S-167 62 Bromma | Sweden > www.servercentralen.se<http://www.servercentralen.se/> > Incredible Servercentral Pvt. 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Any views or > opinions expressed are solely those of the author and do not necessarily > represent those of Shape Blue Ltd or related companies. If you are not the > intended recipient of this email, you must neither take any action based upon > its contents, nor copy or show it to anyone. Please contact the sender if you > believe you have received this email in error. Shape Blue Ltd is a company > incorporated in England & Wales. ShapeBlue Services India LLP is a company > incorporated in India and is operated under license from Shape Blue Ltd. > Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is > operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company > registered by The Republic of South Africa and is traded under license from > Shape Blue Ltd. ShapeBlue is a registered trademark. > Find out more about ShapeBlue and our range of CloudStack related services > > IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> > CSForge – rapid IaaS deployment framework<http://shapeblue.com/csforge/> > CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> > CloudStack Software > Engineering<http://shapeblue.com/cloudstack-software-engineering/> > CloudStack Infrastructure > Support<http://shapeblue.com/cloudstack-infrastructure-support/> > CloudStack Bootcamp Training > Courses<http://shapeblue.com/cloudstack-training/> > > This email and any attachments to it may be confidential and are intended > solely for the use of the individual to whom it is addressed. Any views or > opinions expressed are solely those of the author and do not necessarily > represent those of Shape Blue Ltd or related companies. If you are not the > intended recipient of this email, you must neither take any action based upon > its contents, nor copy or show it to anyone. Please contact the sender if you > believe you have received this email in error. Shape Blue Ltd is a company > incorporated in England & Wales. ShapeBlue Services India LLP is a company > incorporated in India and is operated under license from Shape Blue Ltd. > Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is > operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company > registered by The Republic of South Africa and is traded under license from > Shape Blue Ltd. ShapeBlue is a registered trademark. Find out more about ShapeBlue and our range of CloudStack related services IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> CSForge – rapid IaaS deployment framework<http://shapeblue.com/csforge/> CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> CloudStack Software Engineering<http://shapeblue.com/cloudstack-software-engineering/> CloudStack Infrastructure Support<http://shapeblue.com/cloudstack-infrastructure-support/> CloudStack Bootcamp Training Courses<http://shapeblue.com/cloudstack-training/> This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company registered by The Republic of South Africa and is traded under license from Shape Blue Ltd. ShapeBlue is a registered trademark.
