Tuesday, 2017-12-05

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openstackgerritMerged openstack-dev/pbr master: Support Description-Content-Type metadata  https://review.openstack.org/52165807:51
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openstackgerritMerged openstack/oslo.db master: Updated from global requirements  https://review.openstack.org/52530712:06
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openstackgerritKen Giusti proposed openstack/oslo.messaging master: Move requirements for the optional drivers (pike, zmq, etc)  https://review.openstack.org/52531914:43
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mriedemzzzeek: is there anything in oslo.db where if a read connection fails to a slave_connection, it falls back automatically to the master connection?17:10
zzzeekmriedem: no17:11
zzzeekmriedem: if your "read" slave is down totally I would hope that an HAProxy would have directed new connections to the master17:11
zzzeekbut middle of a transaction, that is lost in all cases if the connection dies17:11
mriedemnot worried about middle of connection17:12
mriedem*transaction17:12
zzzeekmriedem: so if your reader connection fails, no it doesn't fail over, you should have haproxy handling that17:13
mriedemok. i see this came up long ago https://bugs.launchpad.net/oslo.db/+bug/1380632 - probably "won't fix" at this point17:13
openstackLaunchpad bug 1380632 in oslo.db "Support Active-Active HA without LB" [Wishlist,Confirmed]17:13
zzzeekahha .  so yeah17:13
zzzeekmriedem: that concept does exist in some DB worlds like ODBC17:14
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zzzeekmriedem: but it's not a simple thing to build industrial strength and haproxy already does it17:14
mriedemok, thanks for the info.17:15
zzzeekmriedem: also "better latency" is baloney here b.c. the scale of MySQL / Mariadb , HAProxy, all of that, is lightning compared to how Python sends over like...a byte17:15
zzzeekif you're running the NYSE then the latency of haproxy is a thing.  an openstack cluster, no.17:15
mriedemthis is a question from our public cloud ops team looking into using slave connections17:16
mriedemthey are worried about failed connections to the read slaves during an upgrade of the slave17:16
mriedembut a load balancer in front of the slaves should solve that17:16
zzzeekmriedem: i was thinking of building out a huge new project that would put all of the LB onto the application side, based on the idea that haproxy has certain limitations like it's poor compatibility with pooling, but then i found ProxySQL17:16
zzzeeki was going to call it HAAlchemy and it would be a lot of fun to build but I can't take on a project of that magnitude and proxysql does like the same thing anyway17:18
* zzzeek is old. fun time is over17:18
mriedemok i'll pass that on too, never heard of proxysql17:18
mriedemenjoy your matlock17:18
zzzeekmriedem: proxysql is big in the percona world, it's a thing.   openstack could potenatially benefit from it someday but I haven't had the space/energy to start pushing for it17:19
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openstackgerritMerged openstack/mox3 master: Fix various pep8 issues  https://review.openstack.org/51537018:29
openstackgerritMerged openstack/mox3 master: Remove explicit dependency on pep8/pyflakes  https://review.openstack.org/51537118:29
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openstackgerritMike Perez proposed openstack/sphinx-feature-classification master: Build Common Framework for Feature Classification Matrix  https://review.openstack.org/47248818:45
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openstackgerritMerged openstack/debtcollector master: Remove setting of version/release from releasenotes  https://review.openstack.org/52101519:36
openstackgerritMerged openstack/oslo.policy master: Handle deprecation of inspect.getargspec  https://review.openstack.org/52197919:37
openstackgerritMerged openstack/oslo.utils master: Add method validate_integer  https://review.openstack.org/50840119:38
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openstackgerritStibbons proposed openstack-dev/pbr master: allow version override only for non pkgmetadata  https://review.openstack.org/52442120:13
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openstackgerritStibbons proposed openstack-dev/pbr master: add version fallback env var when no git upstream  https://review.openstack.org/52442120:27
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openstackgerritMike Perez proposed openstack/sphinx-feature-classification master: Build Common Framework for Feature Classification Matrix  https://review.openstack.org/47248823:49
openstackgerritMike Perez proposed openstack/sphinx-feature-classification master: Build Common Framework for Feature Classification Matrix  https://review.openstack.org/47248823:51

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