Kyle, I'm guessing there is still something referencing the old Pool the Host used to belong to which is causing the problem.
I really recommend you just re-install XenServer from scratch and have a clean host. A XenServer 6.5 install takes literally 10 mins to do a manual install as there are no Hotfixes to apply yet, a XenServer 6.2 install can take an hour due to all the Hotfixes but you only need to apply the following as they contain all the others not listed: XS62ESP1.xsupdate XS62ESP1003.xsupdate XS62ESP1005.xsupdate XS62ESP1009.xsupdate XS62ESP1014.xsupdate XS62ESP1016.xsupdate So that would be six reboots of the host to apply all the patches up to XS62ESP1016 I also recommend you invest some time setting up a PXE deployment architecture which can auto install XenServer and all the patches, then if you ever need to re-install a host or deploy a new one, you can do so with very little effort and enjoy a nice hot coffee while it does all the work for you. Regards Geoff Higginbottom D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 geoff.higginbot...@shapeblue.com -----Original Message----- From: Kyle Flavin [mailto:kyle.fla...@citrix.com] Sent: 28 January 2015 16:50 To: users@cloudstack.apache.org Subject: RE: Removing a host from a cluster and adding it to another I seem to be a little closer. I've cleared the tags and the SR on my host. When I try to add the host to my new cluster through the Cloudstack web UI, I now see this: "Please join the host <IP> to XS pool <UUID> through XC/XS before adding it through CS UI" I take it this means the host needs to be in a Xen pool first, but I don't know what the pool referenced by <UUID> is. It does not match the cluster UUID in Cloudstack, or any pool UUID's that I can see in Xen. I see that there is a xe pool-join command, but it takes an IP address, not a UUID. How do I join my host to the pool given by the Cloudstack error message above? -----Original Message----- From: Abhinandan Prateek [mailto:abhinandan.prat...@shapeblue.com] Sent: Tuesday, January 27, 2015 9:56 PM To: users@cloudstack.apache.org Subject: Re: Removing a host from a cluster and adding it to another The tag needs to be removed from the Xen Hypervisor so that it cleanly goes to another cluster. Use the following to clear host tags after detaching it from the pool: xe host-param-clear uuid=$host param-name=tags; (Run it in moving Xen host) You also need to clear the SR on this host so that there is no conflict when it is added to another cluster. Following are the steps to clear the SR: [root@xenserver1-cloudstack ~]# df Filesystem 1K-blocks Used Available Use% Mounted on ..... 172.16.197.134:/opt/storage/primary 19856384 2560128 16300160 14% /var/run/sr-mount/66f0805b-da95-872c-2a6e-d5c46c219c2a [root@xenserver1-cloudstack ~]# xe pbd-list sr-uuid=66f0805b-da95-872c-2a6e-d5c46c219c2a uuid ( RO) : 2e2aced7-f27f-917f-a017-68f3504967f0 .. [root@xenserver1-cloudstack ~]# xe pbd-unplug uuid=2e2aced7-f27f-917f-a017-68f3504967f0 [root@xenserver1-cloudstack ~]# xe sr-forget uuid=66f0805b-da95-872c-2a6e-d5c46c219c2a # for pbd in `xe pbd-list currently-attached=false| grep ^uuid | awk '{print $NF}'`; do xe pbd-plug uuid=$pbd ; done Regards, Abhinandan Prateek M +919701199011 abhinandan.prat...@shapeblue.com > On 28-Jan-2015, at 9:49 am, Kyle Flavin <kyle.fla...@citrix.com> wrote: > > Ah, yes I can confirm that there is a host tag with the following query on > the CS database. Here is the sanitized output from the host_tags table: > > select * from host_tags where host_id=<host_id>; > > +-----+---------+----------------+ > | id | host_id | tag | > +-----+---------+----------------+ > | <id> | <hosted> | <host_name> | > +-----+---------+----------------+ > > Is it safe to delete this entry, or should I add the host back into its old > cluster and then delete the tag through the UI? > > -----Original Message----- > From: Somesh Naidu [mailto:somesh.na...@citrix.com] > Sent: Tuesday, January 27, 2015 5:20 PM > To: users@cloudstack.apache.org > Subject: RE: Removing a host from a cluster and adding it to another > > Yes, check what's in the "tags" parameter of that host. Cleaning it should > resolve the issue. > > Regards, > Somesh > > > -----Original Message----- > From: Kyle Flavin [mailto:kyle.fla...@citrix.com] > Sent: Tuesday, January 27, 2015 7:50 PM > To: users@cloudstack.apache.org > Subject: Removing a host from a cluster and adding it to another > > I've removed a host from one Cloudstack cluster, and I'm attempting to add it > to a new cluster. It will be the only host in the cluster, and used for > testing purposes. I put the host into maintenance mode, removed it from its > original cluster within the Cloudstack UI, then deleted it from the Xen pool > using xe pool-eject. > > Now when I create a new cluster, and try to add the host, I get an error > message that just says "Unable to add host" from within the Cloudstack web > UI. I see messages in management-server.log that say "Trying to add a new > host at http://<myhost<http://%3cmyhost>>", but no indication of an error: > > 2015-01-27 16:28:31,142 INFO [c.c.r.ResourceManagerImpl] > (catalina-exec-13:ctx-4ab1a388 ctx-fa2957ea) Trying to add a new host at > http://<myhost> in data center 1 > > On the Xen host itself, I see the following in the xensource.log: > > Jan 28 00:28:31 <host> t1 /opt/xensource/bin/xapi: [debug|<host>|748 INET > 0.0.0.0:80|pool_patch.get_by_uuid D:5fb0d4d944bb|dispatcher] > Server_helpers.exec exception_handler: Got exception UUID_INVALID: [ > pool_patch; 996dd2e7-ad95-49cc-a0be-2c9adc4dfb0b ] > > It references an invalid ID, but I'm not sure what that UUID belongs to; it > isn't the UUID of the pool. > > Is there something that needs to be done to "clear" the configuration of a > Xenserver host prior to adding it to a new cluster? Or is Cloudstack > "remembering" the old host name and not allowing me to put it into the new > cluster? > > Thanks, > Kyle 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. 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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. 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