SmartOS, by virtue of using local storage, doesn't have the same options for HA at the VM level.
In the event of hardware failure, all bets are off as to what you can get out of the failed host, so you'll have to rely on backups anyway for a restore. In other solutions this would be mitigated by the use of shared storage, but that option isn't recommended in SmartOS. The way we provide HA across the business is through application level HA. In the case of MSSQL, we run AlwaysOn availability groups (clustering) and for our web servers we run multiple instances across different hosts with a load balancer in front (or round robin DNS). By doing this we can survive a host going down due to hardware failure. For anything we can't put into HA this way, we have a script that takes hourly ZFS snapshots and ships them either off to another host or the backup server (depending on restoration priority). Hope this helps On 12 Jun 2014, at 7:48 am, Peter Yorke via smartos-discuss <[email protected]<mailto:[email protected]>> wrote: If you are not interested in using a Stingray/SteelApp, there is wackamole/spread for a active/passive cofig, if thats what you are after On Wed, Jun 11, 2014 at 2:38 PM, G B via smartos-discuss <[email protected]<mailto:[email protected]>> wrote: Obviously, on Solaris/OI one can use Sun Cluster for HA. For SmartOS I've seen the wiki doc on using wackamole for VM HA, but that wouldn't handle hardware failure scenarios such as power supply failure (1 power supply) or mainboard failure, etc. I'm not talking disk, because that can be addressed with RAIDZ2/3, etc. If it matters, I'm running multiple web domains with each in its own Joyent brand VM and a mail server (presently KVM) for those domains. Is there a preferred method of software solution available to have a standby SmartOS machine in case of a failure on one? smartos-discuss | Archives<https://www.listbox.com/member/archive/184463/=now> [https://www.listbox.com/images/feed-icon-10x10.jpg10f3ec5.jpg?uri=aHR0cHM6Ly93d3cubGlzdGJveC5jb20vaW1hZ2VzL2ZlZWQtaWNvbi0xMHgxMC5qcGc] <https://www.listbox.com/member/archive/rss/184463/22812361-a27e6236> | Modify<https://www.listbox.com/member/?&;> Your Subscription [https://www.listbox.com/images/listbox-logo-small.png10f3ec5.png?uri=aHR0cHM6Ly93d3cubGlzdGJveC5jb20vaW1hZ2VzL2xpc3Rib3gtbG9nby1zbWFsbC5wbmc] <http://www.listbox.com> -- Peter Yorke Joyent Cloud / node.js [email protected]<mailto:[email protected]> www.joyentcloud.com<http://www.joyentcloud.com/> smartos-discuss | Archives<https://www.listbox.com/member/archive/184463/=now> [https://www.listbox.com/images/feed-icon-10x10.jpg10f3ec5.jpg?uri=aHR0cHM6Ly93d3cubGlzdGJveC5jb20vaW1hZ2VzL2ZlZWQtaWNvbi0xMHgxMC5qcGc] <https://www.listbox.com/member/archive/rss/184463/25738179-216c4b5f> | Modify<https://www.listbox.com/member/?&;> Your Subscription [https://www.listbox.com/images/listbox-logo-small.png10f3ec5.png?uri=aHR0cHM6Ly93d3cubGlzdGJveC5jb20vaW1hZ2VzL2xpc3Rib3gtbG9nby1zbWFsbC5wbmc] <http://www.listbox.com> ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
