Saturday, 2016-02-06

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openstackgerritsean mooney proposed openstack/kolla: elevates privleges and grants access to /dev/mapper to cinder backup  https://review.openstack.org/27699003:52
openstackgerritsean mooney proposed openstack/kolla: elevates privileges and grants access to /dev/mapper to cinder backup  https://review.openstack.org/27699003:57
openstackgerritsean mooney proposed openstack/kolla: elevates privileges and grants access to /dev/mapper to cinder backup  https://review.openstack.org/27699004:00
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openstackgerritSam Yaple proposed openstack/kolla: Fix gate for docker 1.10  https://review.openstack.org/27678806:52
openstackgerritSam Yaple proposed openstack/kolla: Convert Neutron to thin containers  https://review.openstack.org/27271506:52
openstackgerritSam Yaple proposed openstack/kolla: Correct issue with virtualenv rootwrap  https://review.openstack.org/27550406:52
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openstackgerritSam Yaple proposed openstack/kolla: Convert Neutron to thin containers  https://review.openstack.org/27271507:14
SamYaplenihilifer mandre jpeeler Jeffrey4l https://review.openstack.org/27678807:16
SamYaplethat patch fixes gate, should get highest review priority07:16
Allen_GaoSamYaple: I see you split the gate fix from "thin neutron" patch?07:20
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SamYapleAllen_Gao: yea they were never combined07:37
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nihiliferSamYaple: are the gate failures unrelated?07:53
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openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Switch from mysql-python to pymysql everywhere  https://review.openstack.org/27619410:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Cleanup named volumes  https://review.openstack.org/27523710:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Use docker_remove_delay for auto-removing containers  https://review.openstack.org/27021310:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Remove rsyslog from all profiles  https://review.openstack.org/27015110:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Use private network in default settings  https://review.openstack.org/26954510:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Use volume for MariaDB  https://review.openstack.org/27025210:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Categorize variables in etc/globals.yml  https://review.openstack.org/27456010:18
openstackgerritMichal Rostecki proposed openstack/kolla-mesos: Add neutron config  https://review.openstack.org/26510910:18
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openstackgerritJeffrey Zhang proposed openstack/kolla: Ensuring the openvswitch_db is ready before creating bridges  https://review.openstack.org/27557312:41
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openstackgerritJeffrey Zhang proposed openstack/kolla: Add authentication for keepalived  https://review.openstack.org/27708514:20
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SamYapleJeffrey4l: on the gate patch, could you go ahead and +2 that15:24
SamYaplei left a comment but the reason centos binary is failing is rdo15:25
SamYaplethe binary gate will never be voting for that reason15:25
SamYapleif you check the logs the reason for failure is resolved (it doesnt crash on rsyslog) and thats all that matters15:26
Jeffrey4lSamYaple, done. Thanks for explanation.15:28
SamYapleglad we can move to docker 1.1015:29
SamYaplei was worried for a bit15:29
Jeffrey4lfor what?15:29
SamYaplei was worried Kolla was doing things that required a major rework to work with docker 1.1015:30
Jeffrey4lI like the thin container for neutron agents.15:30
SamYaplei spent all day on the issue15:30
SamYapleglad it was a simple fix in the end15:30
SamYapleoh the thin containers are great15:30
Jeffrey4lyep, nice work. :D15:30
SamYaplenow you can access the network namespaces from the host!15:30
Jeffrey4lthat's cool.15:30
SamYaplethat is a _huuuuuge_ thing for operators15:31
Jeffrey4ldefinitely15:31
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claytonSamYaple: how does that work?15:55
SamYapleclayton: what specifically areyou asking?15:56
claytonthe network namespaces from host bit15:56
SamYaplei create a shared mountpoint for /run/netns15:57
SamYaplethat allows namespaces created in teh conatiner to be accessible from the host and vice versa15:57
SamYapleit also allows namepsaces to survive a container restart/recreation15:57
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claytonah, that's on a volume instead of doing a bind mount?16:10
claytonI assumed that part of neutron would "just work" already if you did a bind mount of /run/netns16:11
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SamYapleclayton: it would not :(16:12
SamYapleive been working on this exact feature for almost 2 yeasr now16:12
SamYapleand its finally here!16:12
claytonso how did neutron work in kolla before 1.10?16:12
claytonit didn't support netns?16:13
SamYapleclayton: we have a big fat neutron-agents container16:13
SamYapleit has all the neutron services that use netns16:13
SamYapleso they can function16:13
claytonoh, so multiple processes running under a supervisor or some such there?16:13
SamYaplebut to enter the namespace you have t ofirst enter the container16:13
SamYapleyup16:13
claytonah, ok, I see why you'd want to ditch that :)16:14
SamYaplenow with _thin_ containers no supervisord _and_ you can get into the namespaces from the host16:14
claytondo you have to do something special to get that to work?16:14
SamYapleyea docker finiannly finished its mount propogation support16:14
SamYapleso you mount with "/run/netns/:/run/netns/:shared"16:15
SamYaplethatll make it work16:15
claytonis there somewhere I could read more about that?  I hadn't seen it mentioned anywhere16:15
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SamYaplethe source code16:15
claytonhah, ok :)16:15
SamYaplethats about the only place ive seen it mentioned16:15
claytontheir release notes are, uh, "high-level" :)16:15
claytonI found the commit for it in runc, and I think the message has lots of information, but I don't really understand it16:18
claytonhttps://github.com/opencontainers/runc/commit/23ec72a4261e38d6b44aa62a21cbdfc5423e46c116:19
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SamYapleclayton: https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt16:26
SamYaplerecommended reading16:26
SamYapleit even has a quiz!16:26
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claytonThanks, this looks like what I'm missing16:28
claytonI just tested it with 1.8, I see what you mean16:28
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claytonhrm, so testing with :shared, should ip netns work inside the container for namespaces created in the parent?16:30
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claytonoh, I see, I was running ip netns pids <namespace> which doesn't work because the pid using the namespace isn't in the container16:32
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claytonI see what you mean: "mount --make-shared /var/run/netns failed: Permission denied"16:35
claytonwell, even more glad we're going to 1.10 now16:44
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claytonIt appears that works even without :shared on 1.1016:45
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