Monday, 2016-01-11

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openstackgerritNuman Siddique proposed openstack/networking-ovn: Add port 'up' and 'down' notification  https://review.openstack.org/17882610:05
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openstackgerritBabu Shanmugam proposed openstack/networking-ovn: Note: ** WIP ** Enabling qos support through Logical_Port.options  https://review.openstack.org/26579812:29
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openstackgerritNuman Siddique proposed openstack/networking-ovn: Add port 'up' and 'down' notification  https://review.openstack.org/17882614:19
mesteryMorning folks14:26
Sam-I-Ammornings14:26
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russellbmorning14:41
Sam-I-Amrussellb: moo.14:42
russellbquack14:42
Sam-I-Amrussellb: tested out some ovn on friday14:46
mesteryrussellb: Hit an issue with ovn-controller spinning on one of the nodes on my 5-node scale testing cluster over the weekend, sent email to dev@openvswitch.org14:47
russellbSam-I-Am: yeah, i saw you digging into figuring out some of how things accidentally work14:47
russellbmestery: saw your mail, not sure what the issue is14:47
russellbmestery: not sure if FDs thing is a symptom or cause14:48
mesteryrussellb: Me either to be honest. I have the nodes in that state now in case we want to debug more14:48
Sam-I-Amrussellb: yeah, trying to gather my thoughts on what i found14:48
Sam-I-Amwhere gathering thoughts also involves caffeinating14:49
russellbSam-I-Am: i'm still on coffee #1 here14:49
Sam-I-Ami'm on coffee None now14:49
russellbSam-I-Am: l3 agent isn't something we really care about though, so i wouldn't worry *too* much about it14:49
russellbit's just there to help bootstrap the project14:49
Sam-I-Amand somehow trying to install devstack before coffee14:49
russellbmestery: i'm tempted to just increase system-wide fd limit and reset things and see if it happens again14:49
mesteryrussellb: Yeah, could try that. What's interesting is it only happens on the all-in-one control node, the 4 compute only nodes are fine.14:50
mesteryThe all-in-one also is running nova compute14:50
russellbactually, that reminds me14:51
russellbthose machines are quite large.14:51
russellband the default devstack config has workers based on the # of CPUs14:51
russellband each worker pools DB connections14:51
mesteryOh wow14:51
mesteryThese machines have 56 CPUs ...14:51
russellbi'm not sure what the fd limit is, but just the openstack stuff is going to eat a lot14:52
mesteryYeah, that's right14:52
russellbcat /proc/sys/fs/file-max14:53
mestery2622703914:53
russellbsounds like a bug then14:54
mestery:)14:54
russellblsof | wc -l14:55
mestery[stack@oc-syd01-prod-compute-191 devstack]$ lsof | wc -l14:55
mestery2146714:55
mestery[stack@oc-syd01-prod-compute-191 devstack]$14:55
russellberr, try sudo14:56
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mesteryYikes ... that command isn't returning back14:58
mestery[stack@oc-syd01-prod-compute-191 devstack]$ sudo lsof | wc -l14:59
mestery13420914:59
mestery[stack@oc-syd01-prod-compute-191 devstack]$14:59
mesteryTook a bit14:59
russellb  this is the all-in-one controller right?14:59
mesteryYup14:59
russellbthat number isn't absurd or anything14:59
mesteryYeah15:00
russellbmy laptop has more than that15:00
mesterylol15:00
russellbi assume this is on a private network i can't reach?  :)15:01
mesteryWell ... the machine is publicaly accessible actually15:05
mesteryLet me see if I can get you some access ...15:05
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mesteryrussellb: Looking at getting you access now, buit if not, anything else you want me to look at?15:18
russellbdon't think so ... i was just going to poke around with gdb, maybe enable some more logging, not sure yet15:19
mesteryOK15:19
russellbbasically i have no idea :)15:20
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mesterylol, well, we'll figure this out15:22
Sam-I-Amrussellb: if i create a provider network via ovn, the instance i boot on it should be able to get dhcp, right?15:24
russellbif you have a DHCP server on the provider network, sure15:25
Sam-I-Ami do15:25
Sam-I-Amit doesnt work15:25
russellbactually15:25
Sam-I-Amdhcp reqs dont make it to the dhcp namespace15:25
Sam-I-Amand for some reason, i cant get anything out of a mirror on br-int15:25
Sam-I-Amnot sure if thats a side-effect of ovnbits or not15:25
Sam-I-Amrussellb: i found out that the devstack config sets 'external_network_bridge' in the l3 agent config, which effectively drops qg-* on br-ex, therefore making network connectivity into VMs from the host via FIP appear to work, but its not actually using OVN.15:38
Sam-I-Amif i make that option value empty, which is the recommended value now (and option being removed soon), connectivity to the VM doesnt work because qg-* is on br-int, and not really part of OVN15:39
Sam-I-Amalso interesting that the neutron net-create for the ext net does not specify any kind of network type... it should be a flat provider network15:39
russellbSam-I-Am: yeah, i knew that the "external" connectivity was a hack that devstack seemed to make work, but i hadn't looked that deeply15:40
Sam-I-Ami added the provider network according to the ovn docs and 'conventional' cloud networking works - i can access my VM on the privnet via FIP. however, my VM on the provider/pubnet does not get dhcp.15:40
russellbthe FIP works right?  just a hack15:41
Sam-I-Amyeah, the fip works the "ovn way" if you change the L3 agent config and add br-ex as a provider network in OVN15:41
russellbSam-I-Am: ok, well that's good progress ...15:41
russellbre: DHCP on the provider net, i'm not sure why it's not working, i guess i hadn't tried that15:42
Sam-I-Ami think the gate should do these things15:42
Sam-I-Amrussellb: do you want to poke at this box?15:42
russellbsure15:42
Sam-I-Ami stopped friday after i couldnt get a mirror to work15:42
Sam-I-Amthere's a mirror on br-int now, but nothing shows up15:42
russellbi want to try to see where the dhcp request is going15:43
russellbactually......15:43
russellbis the dhcp server on the same host?15:43
Sam-I-Amyes15:43
russellbnm, that should be fine15:43
Sam-I-Amthere's 2 compute nodes (the AIO and a compute node), but the vm doesnt get dhcp regardless of where it boots15:43
russellbi found out late last week that provider networks have a very bad flaw, where 2 ports on the same provider net on the same host can't talk to each other15:43
russellbi need to work on that asap...15:44
Sam-I-Amalso curious... the docs mention a kernel version limitation for geneve. the stock ubuntu 14.04 kernel is supposedly too old, yet it seems to work?15:44
russellbSam-I-Am: because we're loading custom modules from ovs master15:44
Sam-I-Amrussellb: hmm, that could be this problem. dhcp and the vm would have ports on the same prov net.15:44
russellbbut the dhcp server isn't a part of OVN, right?15:45
Sam-I-Amno, but it has a port somewhere, no?15:45
russellbhow is dhcp set up15:45
russellb2 OVN ports15:45
russellbis what's broken15:45
Sam-I-Amshoot me your pubkey to mkassawara at gmail.com and i'll send you instructions for access15:45
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tongli@russelib, good morning,16:32
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tongli@russelib, I am trying to setup 10 nodes OS cloud using OVN, wonder if there is some kind deployment doc ?16:34
tongli@russelib, also for security, should iptables be used or there is a component working with OVN which does not use iptables?16:35
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Sam-I-Amtongli: sounds like what i'm doing16:38
tongli@Sam-I-Am, matt, hi, good morning.16:39
Sam-I-Amovn does not use iptables like the ovs agent does16:39
tongli@Sam-I-Am, I was able to get everything working using VLAN in my own env. in the lab env, since the second nic is on a switch which does not allow VLAN,16:40
Sam-I-Amyou can deploy ovn in devstack here - http://docs.openstack.org/developer/networking-ovn/testing.html16:40
tongli@Sam-I-Am, yes, I actually did all that in my own env. wonder if there is more generic doc on a more real production deployment.16:41
tonglilike the install guide for the liberty release.16:41
Sam-I-Amno, there isnt16:42
Sam-I-Ambecause there is no distro support16:42
Sam-I-Ami'm planning to make operator deployment docs when ovn can be installed using regular packages, or at least close to it16:42
tongli@Sam-I-Am, I wonder if anyone actually put the OVN in a more production like env and made sure everything actually works.16:43
tongliI mean using OS liberty release.16:43
Sam-I-Amiirc, it is not available for liberty16:43
Sam-I-Amthere are no distro packages for the ovn repo16:44
tongli@Sam-I-Am, so if I am trying to deploy Liberty on my 10 nodes cloud, using OVN may not be a smart thing to do?16:45
Sam-I-Ami dont think it'll work, at least not easily16:45
tongli@Sam-I-Am, thanks for the info, curious how does it work in a devstack env?16:47
Sam-I-Amit uses openstack source, ovn source, and openvswitch source16:47
Sam-I-Amkey is being able to use source16:47
Sam-I-Ammixing packages + deb packages of python libs + python libs via pip usually gets messy16:48
tongli@Sam-I-Am, oh, I was not aware of that. should look at it more closely when I run Kyle's vagrant scripts.16:48
Sam-I-Amtake a look at the devstack plugin.sh in the ovn repo16:48
tongli@Sam-I-Am, thanks.16:50
tongli@Sam-I-Am, you mentioned earlier that it is like something you are doing. so you are creating a doc for doing that or you are trying to get OVN deployed?16:53
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Sam-I-Amtongli: i have ovn deployed on 2 nodes and ran into problems16:54
Sam-I-Amwaiting on russellb to determine whats going on and then discuss if we can gate this more accurately16:54
tongli@Sam-I-Am, i c. thanks again for the info.16:54
Sam-I-Amif you have scrollback in here, you can see some of what i found16:55
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openstackgerritHan Zhou proposed openstack/networking-ovn: Use elevated context when updating ACLs for remote-group-id  https://review.openstack.org/26600919:49
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Sam-I-Amrussellb: whats your thought on making the ovn gate more realistic?20:29
russellbyes.20:29
Sam-I-Amas in, get rid of the br-int external connectivity bypass20:30
Sam-I-Amprobably not an issue once the conv l3 agent goes away, but not sure when that will be done.20:30
* russellb nods20:30
russellbi'm all for it20:30
russellbanything to test more of OVN, more realistic20:30
russellbetc ..20:30
Sam-I-Amwhats scary about neutron gating in general... the hack is everywhere :/20:31
Sam-I-Amunless you call q_use_providernet*20:31
Sam-I-Amor set...20:31
Sam-I-Amif you take a look at the public network in a non-ovn gate job, its marked as vxlan... which is unpossible.20:31
Sam-I-Ammeh, dozens of coffee shops near me and i pick the one with wi-fail20:35
Sam-I-Amalso now rolling into my 18th hour of listening to david bowie20:37
Sam-I-Amso life is good :)20:37
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-openstackstatus- NOTICE: Gerrit is restarting to resolve java memory issues22:05
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