Hi Parth
Thanks for that. I am a beginner too when it comes to this. Am currently rebuilding so will update this thread when I have retested Jon ________________________________ From: Parth Patel <parthpatel2...@gmail.com> Sent: 15 March 2018 14:37 To: users@cloudstack.apache.org Subject: Re: KVM HostHA Hi Jon, I have to admit that I have a beginner/mediocre understanding of cloudstack overall (especially the host HA feature). But what works for me should work for everyone. So, to answer your questions: 1) how many compute nodes do you have > I have tested using three agents as when using only two nodes, management server deemed one node which was running system VMs and router as unfit for migration and stopped the VM. I currently use one node for execution of system VMs and router, and two agents (compute nodes you can say) out of which one is running a HA-enabled VM and one agent running 0 VMs running as I only have 4GB ram in each of those :| I use one machine (fourth one) for running management server and MySQL database. I also have the 5th machine separate purely for NFS. Although, you can easily have management, MySQL and NFS setup on the same machine (depends on your machine's configuration/capacity) > > > 2) are you running basic or advanced networking > I am using basic (flat) networking where my management IP addresses range from 172 16.4.131 to 172.16.4.137 and guest IP addresses range from 172.16.4.138 to 172.16.4.149. Both are on a /24 network. > > 3) how have you setup your NICs ie. on each compute node I have 3 separate > NICs, one for management, one for the VMs and one for storage (NFS). > I only have 1 NIC per machine (same is used for all 3 types of traffic). I have seen management server use peer routing from other agents to perform some operations in my XenCluster but I highly doubt this would be the case your management server does not mark a host as "Down" (as I said I don't know about internal working of Cloudstack but just a guess as I've seen in management server logs) I suggest you remove all three NICs of a host for simulating my scenario. > > > So far I have not managed to get any failover of VMs no matter what I try > I also recommend you update your qemu-kvm, NFS and other packages (there has just been a recent update for CentOS 7) (again I know this is superstitious but still, sometimes different package versions have been known to be the root cause of the issue) Side note: my ACS 4.11 agent auto reboots itself after it has retried communicating with management server 4 times, at almost the exact same time management server decides in its logs that the host and HA-enabled VM has stopped executing and it restarts the HA-enabled VM on another host. Hope this helps. Regards, Parth Patel. > > > ________________________________ > From: Parth Patel <parthpatel2...@gmail.com> > Sent: 14 March 2018 14:36 > To: users@cloudstack.apache.org > Subject: Re: KVM HostHA > > Hi Paul and Adrina, > > I don't know the functioning of Host-HA features but what Paul explained, > my ACS 4.11 does the same without even host HA or ipmi access. As I stated > earlier multiple times, without host HA and ipmi, my ha-enabled VMs > executing on a normal host get restarted on another suitable host in > cluster after approximately 3 minutes of event ping timeout. After which > the cloudstack agent with no connection to management server because of > unplugged NIC (all my machines currently have only one NIC / whole zone is > in a flat network) reboots itself (the reason was explained by Rohit in an > another thread). The management server marks the host down and only > Ha-enabled VMs executing on it get restarted on another host (without any > mention of host HA or ipmi or fencing in management server logs) while > normal VMs executing on it are stopped. > > I don't know if this was a desired outcome, but I think my current ACS 4.11 > installation has features (at least performs some ;) provided by Host HA > without configuring it or ipmi. > > Regards, > Parth Patel > > On Wed 14 Mar, 2018, 18:41 Boris Stoyanov, <boris.stoya...@shapeblue.com> > wrote: > > > yes, KVM + NFS shared storage. > > > > Boris. > > > > > > boris.stoya...@shapeblue.com > > www.shapeblue.com<http://www.shapeblue.com> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]<http://www.shapeblue.com/> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> www.shapeblue.com Rapid deployment framework for Apache CloudStack IaaS Clouds. CSForge is a framework developed by ShapeBlue to deliver the rapid deployment of a standardised ... > [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > http://www.shapeblue.com/> > > Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > www.shapeblue.com<http://www.shapeblue.com> > Rapid deployment framework for Apache CloudStack IaaS Clouds. CSForge is a > framework developed by ShapeBlue to deliver the rapid deployment of a > standardised ... > > > > > 53 Chandos Place, Covent Garden, London WC2N 4HSUK > > @shapeblue > > > > > > > > > On 14 Mar 2018, at 14:51, Andrija Panic <andrija.pa...@gmail.com> > wrote: > > > > > > Hi Boris, > > > > > > ok thanks for the explanation - that makes sense, and covers my > > "exception > > > case" that I have. > > > > > > This is atm only available for NFS as I could read (KVM on NFS) ? > > > > > > Cheers > > > > > > On 14 March 2018 at 13:02, Boris Stoyanov < > boris.stoya...@shapeblue.com> > > > wrote: > > > > > >> Hi Andrija, > > >> > > >> There’s two types of checks Host-HA is doing to determine if host if > > >> healthy. > > >> > > >> 1. Health checks - pings the host as soon as there’s connection issues > > >> with the agent > > >> > > >> If that fails, > > >> > > >> 2. Activity checks - checks if there are any writing operations on the > > >> Disks of the VMs that are running on the hosts. This is to determine > if > > the > > >> VMs are actually alive and executing processes. Only if no disk > > operations > > >> are executed on the shared storage, only then it’s trying to Recover > the > > >> host with IPMI call, if that eventually fails, it migrates the VMs to > a > > >> healthy host and Fences the faulty one. > > >> > > >> Hope that explains your case. > > >> > > >> Boris. > > >> > > >> > > >> boris.stoya...@shapeblue.com > > >> www.shapeblue.com<http://www.shapeblue.com> > > >> 53 Chandos Place, Covent Garden, London WC2N 4HSUK > > >> @shapeblue > > >> > > >> > > >> > > >>> On 14 Mar 2018, at 13:53, Andrija Panic <andrija.pa...@gmail.com> > > wrote: > > >>> > > >>> Hi Paul, > > >>> > > >>> sorry to bump in the middle of the thread, but just curious about the > > >> idea > > >>> behing host-HA and why it behaves the way you exlained above: > > >>> > > >>> > > >>> Would it be more sense (or not?), that when MGMT detects agents is > > >>> unreachable or host unreachable (or after unsuccessful i.e. agent > > >> restart, > > >>> etc...,to be defined), to actually use IPMI to STONITH the node, thus > > >>> making sure no VMS running and then to really start all HA-enabled > VMs > > on > > >>> other hosts ? > > >>> > > >>> I'm just trying to make parallel to the corosync/pacemaker as > > clustering > > >>> suite/services in Linux (RHEL and others), where when majority of > nodes > > >>> detect that one node is down, a common thing (especially for shared > > >>> storage) is to STONITH that node, make sure it;s down, then move > > >> "resource" > > >>> (in our case VMs) to other cluster nodes ? > > >>> > > >>> I see it's actually much broader setup per > > >>> https://cwiki.apache.org/confluence/display/CLOUDSTACK/Host+HA but > > >> again - > > >>> whole idea (in my head at least...) is when host get's down, we make > > sure > > >>> it's down (avoid VM corruption, by doint STONITH to that node) and > then > > >>> start HA VMs on ohter hosts. > > >>> > > >>> I understand there might be exceptions as I have right now (4.8) - > > >> libvirt > > >>> get stuck (librbd exception or similar) so agent get's disconnected, > > but > > >>> VMs are still running fine... (except DB get messed up, all NICs > loose > > >>> isolation_uri, VR's loose MAC addresses and other IP addresses > etc...) > > >>> > > >>> > > >>> Thanks > > >>> Andrija > > >>> > > >>> > > >>> > > >>> > > >>> On 14 March 2018 at 10:57, Jon Marshall <jms....@hotmail.co.uk> > wrote: > > >>> > > >>>> That would make sense. > > >>>> > > >>>> > > >>>> I have another server being used for something else at the moment > so I > > >>>> will add that in and update this thread when I have tested > > >>>> > > >>>> > > >>>> Jon > > >>>> > > >>>> > > >>>> ________________________________ > > >>>> From: Paul Angus <paul.an...@shapeblue.com> > > >>>> Sent: 14 March 2018 09:16 > > >>>> To: users@cloudstack.apache.org > > >>>> Subject: RE: KVM HostHA > > >>>> > > >>>> I'd need to do some testing, but I suspect that your problem is that > > you > > >>>> only have two hosts. At the point that one host is deemed out of > > >> service, > > >>>> you only have one host left. With only one host, CloudStack will > show > > >> the > > >>>> cluster as ineligible. > > >>>> > > >>>> It is extremely common for any system working as a cluster to > require > > a > > >>>> minimum starting point of 3 nodes to be able to function. > > >>>> > > >>>> > > >>>> Kind regards, > > >>>> > > >>>> Paul Angus > > >>>> > > >>>> paul.an...@shapeblue.com > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>> 53 Chandos Place, Covent Garden, London WC2N 4HSUK > > >>>> @shapeblue > > >>>> > > >>>> > > >>>> > > >>>> > > >>>> -----Original Message----- > > >>>> From: Jon Marshall <jms....@hotmail.co.uk> > > >>>> Sent: 14 March 2018 08:36 > > >>>> To: users@cloudstack.apache.org > > >>>> Subject: Re: KVM HostHA > > >>>> > > >>>> Hi Paul > > >>>> > > >>>> > > >>>> My testing does indeed end up with the failed host in maintenance > mode > > >> but > > >>>> the VMs are never migrated. As I posted earlier the management > server > > >> seems > > >>>> to be saying there is no other host that the VM can be migrated to. > > >>>> > > >>>> > > >>>> Couple of questions if you have the time to respond - > > >>>> > > >>>> > > >>>> 1) this article seems to suggest a reboot or powering off a host > will > > >> end > > >>>> result in the VMs being migrated and this was on CS v 4.2.1 back in > > >> 2013 so > > >>>> does Host HA do something different > > >>>> > > >>>> > > >>>> 2) Whenever one of my two nodes is taken down in testing the active > > >>>> compute nodes HA status goes from Available to Ineligible. Should > this > > >>>> happen ie. is it going to Ineligible stopping the manager from > > migrating > > >>>> the VMs. > > >>>> > > >>>> > > >>>> Apologies for all the questions but I just can't get this to work at > > the > > >>>> moment. If I do eventually get it working I will do a write up for > > >> others > > >>>> with same issue :) > > >>>> > > >>>> > > >>>> ________________________________ > > >>>> From: Paul Angus <paul.an...@shapeblue.com> > > >>>> Sent: 14 March 2018 07:45 > > >>>> To: users@cloudstack.apache.org > > >>>> Subject: RE: KVM HostHA > > >>>> > > >>>> Hi Parth, > > >>>> > > >>>> Two answer your questions, VM-HA does not restart VMs on an > alternate > > >> host > > >>>> if the original host goes down. The management server (without > > host-HA) > > >>>> cannot tell what happened to the host. It cannot tell if there was > a > > >>>> failure in the agent, loss of connectivity to the management NIC or > if > > >> the > > >>>> host is truly down. In the first two scenarios, the guest VMs can > > >> still be > > >>>> running perfectly well, and to restart them elsewhere would be very > > >>>> dangerous. Therefore, the correct thing to do is - nothing but > alert > > >> the > > >>>> operator. These scenarios are what Host-HA was introd > > < > https://maps.google.com/?q=These+scenarios+are+what+Host-HA+was+introd&entry=gmail&source=g > >uced > > for. > > >>>> > > >>>> Wrt to STONITH, if no disk activity is detected on the host, host-HA > > >> will > > >>>> try to restart (via IPMI) the host. If, after a configurable number > of > > >>>> attempts, the host agent still does not check in, then host-HA will > > shut > > >>>> down the host (via IPMA), trigger VM-HA and mark the host as > > >> in-maintenance. > > >>>> > > >>>> > > >>>> > > >>>> paul.an...@shapeblue.com > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>> 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue > > >>>> > > >>>> > > >>>> > > >>>> > > >>>> -----Original Message----- > > >>>> From: Parth Patel <parthpatel2...@gmail.com> > > >>>> Sent: 14 March 2018 05:05 > > >>>> To: users@cloudstack.apache.org > > >>>> Subject: Re: KVM HostHA > > >>>> > > >>>> Hi Paul, > > >>>> > > >>>> Thanks for the clarification. I currently don't have an ipmi enabled > > >>>> hardware (in test environment), but it will be beneficial if you can > > >> help > > >>>> me clear out some basic concepts of it: > > >>>> - If HA-enabled VMs are autostarted on another host when current > host > > >> goes > > >>>> down, what is the need or purpose of HA-host? (other than management > > >> server > > >>>> able to remotely control it's power interfaces) > > >>>> - I understood the "Shoot-the-other-node-in-the-head" (STONITH) > > >> approach > > >>>> ACS uses to fence the host, but I couldn't find what mechanism or > > events > > >>>> trigger this? > > >>>> > > >>>> Thanks and regards, > > >>>> Parth Patel > > >>>> > > >>>> On Wed, 14 Mar 2018 at 02:22 Paul Angus <paul.an...@shapeblue.com> > > >> wrote: > > >>>> > > >>>>> The management server doesn't ping the host through IPMI. However > > if > > >>>>> IPMI is not available, you will not be able to use Host HA, as > there > > >>>>> is no way for CloudStack to 'fence' the host - that is shut it down > > to > > >>>>> be sure that a VM cannot start again on that host. > > >>>>> > > >>>>> I can explain why that is necessary if you wish. > > >>>>> > > >>>>> > > >>>>> Kind regards, > > >>>>> > > >>>>> Paul Angus > > >>>>> > > >>>>> paul.an...@shapeblue.com > > >>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>> 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue > > >>>>> > > >>>>> > > >>>>> > > >>>>> > > >>>>> -----Original Message----- > > >>>>> From: Parth Patel <parthpatel2...@gmail.com> > > >>>>> Sent: 13 March 2018 16:57 > > >>>>> To: users@cloudstack.apache.org > > >>>>> Cc: Jon Marshall <jms....@hotmail.co.uk> > > >>>>> Subject: Re: KVM HostHA > > >>>>> > > >>>>> Hi Jon and Victor, > > >>>>> > > >>>>> I think the management server pings your host using ipmi (I really > > >>>>> don't hope this is the case). > > >>>>> In my case, I did not have OOBM enabled at all (my hardware didn't > > >>>>> support > > >>>>> it) > > >>>>> I think you could disable OOBM and/or HA-Host and give that a try > :) > > >>>>> > > >>>>> On Tue, 13 Mar 2018 at 20:40 victor <vic...@ihnetworks.com> wrote: > > >>>>> > > >>>>>> Hello Guys, > > >>>>>> > > >>>>>> I have tried the following two cases. > > >>>>>> > > >>>>>> 1, "echo c > /proc/sysrq-trigger" > > >>>>>> > > >>>>>> 2, Pulled the network cable of one of the host > > >>>>>> > > >>>>>> In both cases, the following happened. > > >>>>>> > > >>>>>> ===== > > >>>>>> 2018-03-13 08:22:54,978 DEBUG [c.c.a.m.ClusteredAgentManagerImpl] > > >>>>>> (AgentTaskPool-15:ctx-c8d9f5d2) (logid:c0a3d2da) Notifying other > > >>>>>> nodes of to disconnect > > >>>>>> 2018-03-13 08:22:54,983 INFO [c.c.a.m.AgentManagerImpl] > > >>>>>> (AgentTaskPool-16:ctx-d8204625) (logid:ffe4a426) Host 4 is > > >>>>>> disconnecting with event AgentDisconnected > > >>>>>> 2018-03-13 08:22:54,985 DEBUG [c.c.a.m.AgentManagerImpl] > > >>>>>> (AgentTaskPool-16:ctx-d8204625) (logid:ffe4a426) Host 4 is already > > >>>>>> Alert > > >>>>>> 2018-03-13 08:22:54,985 DEBUG [c.c.a.m.AgentManagerImpl] > > >>>>>> (AgentTaskPool-16:ctx-d8204625) (logid:ffe4a426) Deregistering > link > > >>>>>> for > > >>>>>> 4 with state Alert > > >>>>>> 2018-03-13 08:22:54,985 DEBUG [c.c.a.m.AgentManagerImpl] > > >>>>>> (AgentTaskPool-16:ctx-d8204625) (logid:ffe4a426) Remove Agent : 4 > > >>>>>> ===== > > >>>>>> > > >>>>>> But nothing happened for the vm's in that node. I have waited for > > >>>>>> one hour and the VM's in that node has been migrated to the other > > >>>>>> available hosts. I think the issue is that the management server > > >>>>>> still thinks that the VM's in that host is running. Please check > the > > >>>>>> following logs > > >>>>>> > > >>>>>> ======= > > >>>>>> 2018-03-13 11:08:25,882 DEBUG [c.c.c.CapacityManagerImpl] > > >>>>>> (CapacityChecker:ctx-1d8378af) (logid:ae906a50) Found 1 VMs on > host > > >>>>>> 4 > > >>>>>> 2018-03-13 11:08:25,888 DEBUG [c.c.c.CapacityManagerImpl] > > >>>>>> (CapacityChecker:ctx-1d8378af) (logid:ae906a50) Found 0 VM, not > > >>>>>> running on host 4 ======== > > >>>>>> > > >>>>>> > > >>>>>> On 03/13/2018 04:20 PM, Jon Marshall wrote: > > >>>>>>> I tried "echo c > /proc/sysrq-trigger" which stopped me getting > > >>>>>>> into the > > >>>>>> server but it did not stop the server responding to an ipmitool > > >>>>>> request on the manager eg - > > >>>>>>> > > >>>>>>> > > >>>>>>> "ipmitool -I lanplus -H 172.16.7.29 -U admin3 -P letmein chassis > > >>>>> status" > > >>>>>>> > > >>>>>>> > > >>>>>>> from the management server got an answer saying the chassis power > > >>>>>>> was on > > >>>>>> so CS never registered the compute node as down. > > >>>>>>> > > >>>>>>> > > >>>>>>> I am obviously doing something wrong but cannot work it out. > > >>>>>>> > > >>>>>>> > > >>>>>>> The management server has one NIC - 172.16.7.4 > > >>>>>>> > > >>>>>>> > > >>>>>>> Each compute node has 3 NICs - > > >>>>>>> > > >>>>>>> > > >>>>>>> cnode1 > > >>>>>> cnode2 > > >>>>>>> > > >>>>>>> > > >>>>>>> mangement NIC 172.16.7.5 172.16.7.6 > > >>>>>>> > > >>>>>>> vm NIC 172.16.6.130 > > 172.16.6.131 > > >>>>>>> > > >>>>>>> storage - 172.16.250.4 > > 172.16.250.5 > > >>>>>>> > > >>>>>>> > > >>>>>>> Dell LOM (for Idrac) 172.16.7.29 172.16.7.30 > > >>>>>>> > > >>>>>>> > > >>>>>>> the dell LOM IPs are the ones used to configure OOBM in the UI > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>> If I pull the storage NIC presumably nothing will happen as the > > >>>>>>> ipmitool > > >>>>>> check is running across the management NIC so I need to pull both > ? > > >>>>>>> > > >>>>>>> My understanding of host HA was the management server monitored > > >>>>>>> the > > >>>>>> compute nodes using ipmitool and if it did not get a response > > >>>>>> because the host was down it would fence off that host and move > the > > >>>>>> VMs to an active compute node. > > >>>>>>> > > >>>>>>> This is obviously too simplistic so could someone explain how it > > >>>>>>> is > > >>>>>> meant to work and what it is protecting against ? > > >>>>>>> > > >>>>>>> ________________________________ > > >>>>>>> From: Paul Angus <paul.an...@shapeblue.com> > > >>>>>>> Sent: 13 March 2018 07:01 > > >>>>>>> To: users@cloudstack.apache.org > > >>>>>>> Subject: RE: KVM HostHA > > >>>>>>> > > >>>>>>> Hi all, > > >>>>>>> > > >>>>>>> One small note, unplugging the management NIC will only cause an > > >>>>>>> HA > > >>>>>> event if the storage is running over that NIC also. > > >>>>>>> > > >>>>>>> Is the storage is over a separate NIC then, the guest VMs will > > >>>>>>> continue > > >>>>>> to run when the mgmt. NIC is unplugged, Host HA will detect the > disk > > >>>>>> activity and conclude that there is nothing it can do, as the VMs > > >>>>>> are still running other than mark the hosts as degra > <https://maps.google.com/?q=ll+running+other+than+mark+the+hosts+as+degra&entry=gmail&source=g> > ded. > > >>>>>>> > > >>>>>>> > > >>>>>>> Kind regards, > > >>>>>>> > > >>>>>>> Paul Angus > > >>>>>>> > > >>>>>>> paul.an...@shapeblue.com > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ]< > > >>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> > > >>>>>>> Shapeblue - The CloudStack Company > > >>>>> < > > https://maps.google.com/?q=ack+Company+%0D%0A%3E+%3E+w&entry=gmail&so > > >>>>> urce=g> > > >>>>> <http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>>>>> CSForge is > > >>>>>> a framework developed by ShapeBlue to deli > > >>>>>> < > > https://maps.google.com/?q=is+a+framework+developed+by+ShapeBlue+to > > >>>>>> +d eli&entry=gmail&source=g>ver the rapid deployment of a > > >>>>>> standardised ... > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>> 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>> -----Original Message----- > > >>>>>>> From: Parth Patel <parthpatel2...@gmail.com> > > >>>>>>> Sent: 12 March 2018 17:35 > > >>>>>>> To: users@cloudstack.apache.org > > >>>>>>> Subject: Re: KVM HostHA > > >>>>>>> > > >>>>>>>> Hi Jon, > > >>>>>>>> > > >>>>>>>> As I said, in my case, making the host HA didn't work but by > just > > >>>>>>>> having a HA VM running on host and executing - (WARNING) "echo c > > >>>>>>>>> /proc/sysrq-trigger" to simulate a kernel crash on host, the > > >>>>>>>> management server registered it as down and started the VM on > > >>>>>>>> another host. I know I've suggested this before but I insist you > > >>>>>>>> give this a try. Also, you don't need to completely power off > the > > >>>>>>>> machine manually but just plugging out the network cable works > > >>>>>>>> fine. The cloudstack agent after losing connection to management > > >>>>>>>> server auto reboots because of KVM heartbeat check shell script > > >>>>>>>> mentioned by Rohit Yadav to one of my earlier queries in other > > >>>> thread. > > >>>>>>>> > > >>>>>>>> On Mon 12 Mar, 2018, 21:23 Jon Marshall, <jms....@hotmail.co.uk > > > > >>>>> wrote: > > >>>>>>>> Hi Paul > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Thanks for the response. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> I think I am not understanding how it was meant to work then. My > > >>>>>>>> understanding was that the manager used ipmitool to just keep > > >>>>>>>> querying the compute nodes as to their status so I assumed it > > >>>>>>>> didn't matter how you shut the node down, once it was down the > > >>>>>>>> manager would get no response and mark it as down (which it > does). > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> I am in testing mode so I think I will just go and pull the > power > > >>>>>>>> and see what happens :) > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Thanks > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Jon > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> ________________________________ > > >>>>>>>> From: Paul Angus <paul.an...@shapeblue.com> > > >>>>>>>> Sent: 12 March 2018 15:31 > > >>>>>>>> To: users@cloudstack.apache.org > > >>>>>>>> Subject: RE: KVM HostHA > > >>>>>>>> Hi Jon, > > >>>>>>>> > > >>>>>>>> I think that what you guys are finding, is that a controlled > host > > >>>>>>>> shutdown, which will cause the agent to shutdown cleanly; Is not > > >>>>>>>> considered an HA event. I wouldn't expect CloudStack to take any > > >>>>>>>> action if you shut down a host, only if the host (agent) stops > > >>>>>> responding. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Kind regards, > > >>>>>>>> > > >>>>>>>> Paul Angus > > >>>>>>>> > > >>>>>>>> paul.an...@shapeblue.com > > >>>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ]< > > >>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> > > >>>>>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>>>>> CSForge > > >>>>> is > > >>>>>> a framework developed by ShapeBlue to deliver the rapid deployment > > >>>>>> of a standardised ... > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ] > > >>>>>>> > > >>>>>>> ]< > > >>>>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ]< > > >>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> > > >>>>>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>>>>> CSForge > > >>>>> is > > >>>>>> a framework developed by ShapeBlue to deliver the rapid deployment > > >>>>>> of a standardised ... > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack > <https://maps.google.com/?q=deployment+framework+for+Apache+CloudStack+&entry=gmail&source=g>IaaS > Clouds. CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ]< > > >>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> > > >>>>>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>>>>> CSForge > > >>>>> is > > >>>>>> a framework developed by ShapeBlue to deliver the rapid deployment > > >>>>>> of a standardised ... > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png > > >>>> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png] > > >>>> > > >>>> ]< > > >>>>>> http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> > > >>>>>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]< > > >>>> http://www.shapeblue.com/> > > >>>> > > >>>> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> > > >>>> www.shapeblue.com<http://www.shapeblue.com> > > >>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > CSForge > > >> is a > > >>>> framework developed by ShapeBlue to deliver the rapid deployment of > a > > >>>> standardised ... > > >>>> > > >>>> > > >>>> > > >>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>>>>> CSForge > > >>>>> is > > >>>>>> a framework developed by ShapeBlue to deliver < > > >>>>> > > https://maps.google.com/?q=framework+developed+by+ShapeBlue+to+deliver > > >>>>> &entry=gmail&source=g > > >>>>>> > > >>>>>> the rapid deployment of a standardised ... > > >>>>>>> > > >>>>>>> > > >>>>>>> > > >>>>>>>> Rapid deployment framework for Apache CloudStack IaaS Clouds. > > >>>> CSForge > > >>>>>>>> is a framework developed by ShapeBlue to deliver the rapid > > >>>> deployment > > >>>>>>>> of a standardised ... > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> -----Original Message----- > > >>>>>>>> From: Jon Marshall <jms....@hotmail.co.uk> > > >>>>>>>> Sent: 12 March 2018 15:15 > > >>>>>>>> To: users@cloudstack.apache.org > > >>>>>>>> Subject: Re: KVM HostHA > > >>>>>>>> > > >>>>>>>> I have the same issue here and am not entirely sure what the > > >>>> behaviour > > >>>>>>>> should be. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> I have one manager node and 2 compute nodes running 4.11 with > ipmi > > >>>>>> working > > >>>>>>>> correctly. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> From the UI under HA - > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> HA Enabled Yes > > >>>>>>>> HA State Available > > >>>>>>>> HA Provider kvmhaprovider > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> although interestingly from the "Details" tab it shows - > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> HA enabled No > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> which I assume is a cosmetic issue ? > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> On each compute node I have one HA enabled VM and one non HA > > enabled > > >>>>> VM. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> I power off a compute node and the UI updates the host status > and > > >>>> the > > >>>>>> VMs > > >>>>>>>> on that node stop responding but they never fail over to the > other > > >>>>> node. > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Couple of things I noticed - > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> 1) as soon as i power off the compute node the HA state on the > > other > > >>>>>> node > > >>>>>>>> shows "Ineligible" > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> 2) In the UI the instances all still show as green even though > two > > >>>> of > > >>>>>> them > > >>>>>>>> are not available > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> Any help much appreciated > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> > > >>>>>>>> ________________________________ > > >>>>>>>> From: victor <vic...@ihnetworks.com> > > >>>>>>>> Sent: 07 March 2018 17:01 > > >>>>>>>> To: users@cloudstack.apache.org > > >>>>>>>> Subject: KVM HostHA > > >>>>>>>> > > >>>>>>>> Hello Guys, > > >>>>>>>> > > >>>>>>>> I have installed cloudstack 4.11. I have enabled HA for each > > hosts I > > >>>>>> have > > >>>>>>>> added. I have also added ipmi successfully (using ipmi driver). > > >>>>>>>> The hosts are showing like the following. > > >>>>>>>> > > >>>>>>>> ======= > > >>>>>>>> > > >>>>>>>> HA Enabled Yes > > >>>>>>>> HA State Available > > >>>>>>>> HA Provider kvmhaprovider > > >>>>>>>> > > >>>>>>>> ====== > > >>>>>>>> > > >>>>>>>> Also the host is showing the following correctly > > >>>>>>>> > > >>>>>>>> Resource state --> Enabled > > >>>>>>>> State --> UP > > >>>>>>>> Power state --> On > > >>>>>>>> > > >>>>>>>> So I have shutdown one of the hosts to see how the KVM hosts Ha > is > > >>>>>>>> working. I have waited for half an hour. But nothing has > happened. > > >>>>> What > > >>>>>>>> will happen to the VM's in that host, if the host failed to back > > up. > > >>>>>>>> There isn't much from logs. > > >>>>>>>> > > >>>>>>>> Regards > > >>>>>>>> Victor > > >>>>>>>> > > >>>>>> > > >>>>>> > > >>>>> > > >>>> > > >>> > > >>> > > >>> > > >>> -- > > >>> > > >>> Andrija Panic > > >> > > >> > > > > > > > > > -- > > > > > > Andrija Panic > > > > >
