Also you can run ceph if you need HA. I met setup description which uses compute nodes for ceph cluster nodes simultaneously.
1 нояб. 2017 г. 21:11 пользователь "Simon Weller" <[email protected]> написал: > James, > > > Try just configuring a single NFS server and see if your setup works. If > you have 3 NFS shares, across all 3 hosts, i'm wondering whether ACS is > picking the one you rebooted as the storage for your VMs and when that > storage goes away (when you bounce the host), all storage for your VMs > vanishes and ACS tries to reboot your other hosts. > > > Normally in a simple ACS setup, you would have a separate storage server > that can serve up NFS to all hosts. If a host dies, then a VM would be > brought up on a spare hosts since all hosts have access to the same storage. > > Your other option is to use local storage, but that won't provide HA. > > > - Si > > > ________________________________ > From: McClune, James <[email protected]> > Sent: Monday, October 30, 2017 2:26 PM > To: [email protected] > Subject: Re: Problems with KVM HA & STONITH > > Hi Dag, > > Thank you for responding back. I am currently running ACS 4.9 on an Ubuntu > 14.04 VM. I have the three nodes, each having about 1TB of primary storage > (NFS) and 1TB of secondary storage (NFS). I added each NFS share into ACS. > All nodes are in a cluster. > > Maybe I'm not understanding the setup or misconfigured something. I'm > trying to setup an HA environment where if one node goes down, running an > HA marked VM, the VM will start on another host. When I simulate a network > disconnect or reboot of a host, all of the nodes go down (STONITH?). > > I am unsure on how to setup an HA environment, if all the nodes in the > cluster go down. Any help is much appreciated! > > Thanks, > James > > On Mon, Oct 30, 2017 at 3:49 AM, Dag Sonstebo <[email protected]> > wrote: > > > Hi James, > > > > I think you possibly have over-configured your KVM hosts. If you use NFS > > (and no clustered file system like CLVM) then there should be no need to > > configure STONITH. CloudStack takes care of your HA, so this is not > > something you offload to the KVM host. > > > > (As mentioned the only time I have played with STONITH and CloudStack was > > for CLVM – and I eventually found it not fit for purpose, too unstable > and > > causing too many issues like you describe. Note this was for block > storage > > though – not NFS). > > > > Regards, > > Dag Sonstebo > > Cloud Architect > > ShapeBlue > > > > On 28/10/2017, 03:40, "Ivan Kudryavtsev" <[email protected]> > wrote: > > > > Hi. If the node losts nfs host it reboots (acs agent behaviour). If > you > > really have 3 storages, you'll go clusterwide reboot everytime your > > host is > > down. > > > > 28 окт. 2017 г. 3:02 пользователь "Simon Weller" > > <[email protected]> > > написал: > > > > > Hi James, > > > > > > > > > Can you elaborate a bit further on the storage? You say you're > > running NFS > > > on all 3 nodes, can you explain how it is setup? > > > > > > Also, what version of ACS are you running? > > > > > > > > > - Si > > > > > > > > > > > > > > > ________________________________ > > > From: McClune, James <[email protected]> > > > Sent: Friday, October 27, 2017 2:21 PM > > > To: [email protected] > > > Subject: Problems with KVM HA & STONITH > > > > > > Hello Apache CloudStack Community, > > > > > > My setup consists of the following: > > > > > > - Three nodes (NODE1, NODE2, and NODE3) > > > NODE1 is running Ubuntu 16.04.3, NODE2 is running Ubuntu 16.04.3, > > and NODE3 > > > is running Ubuntu 14.04.5. > > > - Management Server (running on separate VM, not in cluster) > > > > > > The three nodes use KVM as the hypervisor. I also configured > primary > > and > > > secondary storage on all three of the nodes. I'm using NFS for the > > primary > > > & secondary storage. VM operations work great. Live migration works > > great. > > > > > > However, when a host goes down, the HA functionality does not work > > at all. > > > Instead of spinning up the VM on another available host, the down > > host > > > seems to trigger STONITH. When STONITH happens, all hosts in the > > cluster go > > > down. This not only causes no HA, but also downs perfectly good > > VM's. I > > > have read countless articles and documentation related to this > > issue. I > > > still cannot find a viable solution for this issue. I really want > to > > use > > > Apache CloudStack, but cannot implement this in production when > > STONITH > > > happens. > > > > > > I think I have something misconfigured. I thought I would reach out > > to the > > > CloudStack community and ask for some friendly assistance. > > > > > > If there is anything (system-wise) you request in order to further > > > troubleshoot this issue, please let me know and I'll send. I > > appreciate any > > > help in this issue! > > > > > > -- > > > > > > Thanks, > > > > > > James > > > > > > > > > > > [email protected] > > 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 ... > > > > > 53 Chandos Place, Covent Garden, London WC2N 4HSUK > > @shapeblue > > > > > > > > > > > -- > > > > James McClune > > Technical Support Specialist > > Norwalk City Schools > > Phone: 419-660-6590 > > [email protected] >
