It does appear that the database is updated (see a reply a few moments ago) at the correct point... an explanation of what the tool is/isn't doing will go a long way in helping me work out what I should be using the tools for / configuration. To an end user - it appears to take anywhere between a few minutes and 10 mins before an instance is accessible - but looking at what is happening the instance is ready within seconds - so something is amiss with the supplied tools.
Cheers, Kev On 28 March 2012 14:11, Kiall Mac Innes <ki...@managedit.ie> wrote: > <stab in the dark> > Have you kept an eye on the mysql table itself, rather than relying on the > cli tools / dashboard that may very well cache the data? > </stab in the dark> > > Thanks, > Kiall > > > On Wed, Mar 28, 2012 at 1:58 PM, Kevin Jackson > <ke...@linuxservices.co.uk>wrote: > >> Cheers Phil, >> It's not that I can't get to the instances - I'd assume it was an ARP >> issue at that point - its the fact that Nova hasn't notified me that it has >> assigned an IP address: see my additional note where I guessed an IP >> address it would've assigned and I could access it... but management tools >> were still blissfully unaware. >> I used to have a working Diablo set up with pretty much this same set up >> (this is under Essex RC1 / Ubuntu 12.04) and never had an issue. >> >> This just looks like it has assigned the IP to the instance, but hasn't >> notified the management underbelly of MySQL so any client tools >> interrogating the instance doesn't see that nova has done this work already. >> >> Kev >> >> >> On 28 March 2012 13:04, Day, Phil <philip....@hp.com> wrote: >> >>> Are you sure that its Nova that is taking the time to associate the IP, >>> and not an ARP issue in your network ?**** >>> >>> ** ** >>> >>> I’ve seen this behaviour when quickly reusing floating IP addresses – >>> Nova does the assignment and sends out an unsolicited ARP response >>> (assuming you have the “send_arp_for_ha” flag set) – this is in >>> network/linux_net.bind_floating_ip(). However sometimes an unsolicited >>> APR response can get dropped in the network, ad so if the switch doesn’t >>> see this message and it already has a previous ARP mapping in its cache >>> then it will continue to try and send traffic to the previous user of that >>> address until the cache times out. **** >>> >>> ** ** >>> >>> Note that some network failover systems send multiple requests to get >>> more certainty around this (for example I’ve seen a VPN solution use 6 >>> messages).**** >>> >>> ** ** >>> >>> There are a couple of things you could try:**** >>> >>> ** ** >>> >>> **- **Add a flag to be able to increase the number of >>> arp_responses sent**** >>> >>> **- **Change the allocation of floating_ips so that instead of >>> picking the first free one in the DB you pick the one which has been unused >>> for the longest time (reduces the risk of reusing an address before the >>> switch times out the entry in its cache).**** >>> >>> ** ** >>> >>> Phil**** >>> >>> ** ** >>> >>> *From:* openstack-bounces+philip.day=hp....@lists.launchpad.net [mailto: >>> openstack-bounces+philip.day=hp....@lists.launchpad.net] *On Behalf Of >>> *Kevin >>> Jackson >>> *Sent:* 28 March 2012 12:49 >>> *To:* openstack@lists.launchpad.net >>> *Subject:* [Openstack] Auto Assigned Floating IPs take a long time to >>> associate**** >>> >>> ** ** >>> >>> Hi all,**** >>> >>> I've got the following set in my nova.conf:**** >>> >>> ** ** >>> >>> --auto_assign_floating_ip**** >>> >>> ** ** >>> >>> and I fire up an instance.**** >>> >>> Everything works, a private IP is assigned... the instance is running... >>> but it can take an inordinate amount of time (anywhere upwards of 2 mins, >>> sometimes a lot longer) to associate a floating IP automatically.**** >>> >>> ** ** >>> >>> Anybody else experienced this? Any clues on what I can do to >>> troubleshoot this? What is the condition when a Floating IP is assigned? >>> I've seen it assign Floating IPs very quickly when it is still Booting, >>> not Active, say.**** >>> >>> Is it dependent on anything within the Instance itself?**** >>> >>> ** ** >>> >>> Cheers,**** >>> >>> ** ** >>> >>> Kev**** >>> >>> -- >>> Kevin Jackson >>> @itarchitectkev**** >>> >> >> >> >> -- >> Kevin Jackson >> @itarchitectkev >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp >> >> > -- Kevin Jackson @itarchitectkev
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