<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div>Il giorno 26/lug/2012, alle ore 04:59, Angus Salkeld ha scritto:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>On 24/07/12 12:12 -0700, Steven Dake wrote:<br><blockquote type="cite">On 07/24/2012 10:08 AM, Alessandro Tagliapietra wrote:<br></blockquote><blockquote type="cite"><blockquote type="cite">But i don't see any part (except the future plans) talking about HA at instance level, that seems more to an application level<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Currently heat's healthchecking is application only, but we do intend to<br></blockquote><blockquote type="cite">improve instance healthchecking in v6. We are currently in our v5<br></blockquote><blockquote type="cite">development which concludes on July 30th. We have 4-5 week development<br></blockquote><blockquote type="cite">windows. I'll make certain vm healthchecking is solid for v6 around<br></blockquote><blockquote type="cite">August. However, we may be able to fit into v5 - I'll have to check<br></blockquote><blockquote type="cite">with the main author of the HA feature (Angus Salkeld).<br></blockquote><br>I have just added a template demonstating an instance sending<br>healthchecks and getting restarted if it fails to send a healthcheck<br>within a specified period.<br><br><a href="https://github.com/heat-api/heat/blob/master/templates/WordPress_Single_Instance_With_IHA.template">https://github.com/heat-api/heat/blob/master/templates/WordPress_Single_Instance_With_IHA.template</a><br><br>(just to give you another option).<br></div></blockquote><div><br></div><div>Thanks for that but I don't think that just restarting starts the vm on the other node if it fails.<div><br></div><div>Best<br><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><div>-- </div><div>Alessandro Tagliapietra | VISup srl</div><div>piazza 4 novembre 7</div><div>20124 Milano</div><div><br></div><div><a href="http://www.visup.it">http://www.visup.it</a></div></div><div><br></div></span></div></div></div><br><blockquote type="cite"><div><br>-Angus<br><br><blockquote type="cite"><br></blockquote><blockquote type="cite">The HA feature HOWTO is described a bit here:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><a href="https://github.com/heat-api/heat/wiki/Using-HA">https://github.com/heat-api/heat/wiki/Using-HA</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">An example HA application template is here:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><a href="https://github.com/heat-api/heat/blob/master/templates/WordPress_Single_Instance_With_HA.template">https://github.com/heat-api/heat/blob/master/templates/WordPress_Single_Instance_With_HA.template</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">This template launches a wordpress cloud application. If httpd or mysql<br></blockquote><blockquote type="cite">fail, they are restarted. If they fail 3 times in 5 minutes, the entire<br></blockquote><blockquote type="cite">VM is restarted (this is called escalation) under the assumption that<br></blockquote><blockquote type="cite">the VM container is defective in some way.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Regards<br></blockquote><blockquote type="cite">-steve<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">Il giorno 24/lug/2012, alle ore 18:56, Jay Pipes ha scritto:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">On 07/24/2012 12:52 PM, Alessandro Tagliapietra wrote:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Thank you Jay, never read about that.<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Seems something like scalr/chef? WHich handles application and keeps a minimum number of vm running?<br></blockquote></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Yeah, kinda.. just one more way of doing things... :)<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">-jay<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br></blockquote><blockquote type="cite">Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br></blockquote><blockquote type="cite">Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br></blockquote><blockquote type="cite">More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br></blockquote><br>_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br></div></blockquote></div><br></div></body></html>