This is specific to how fuel does HA. If you are using Fuel then you will only follow HA for contrail bits. Fuel 7.0 will have contrail HA support.
Regards -Harshad > On Aug 27, 2015, at 2:00 AM, "[email protected]" <[email protected]> > wrote: > > > hi Ranjeet > > in this page : > https://docs.mirantis.com/openstack/fuel/fuel-6.1/reference-architecture.html#openstack-environment-architecture > > > it said that : > OpenStack support for multi-node writing to MySQL/Galera nodes is not > production ready yet. "The simplest way to overcome this issue from the > operator’s point of view is to use only one writer node for these types of > transactions". That is why Fuel configures HAProxyfrontend for MySQL/Galera > to use only one active node, while the other nodes in the cluster are > retained standby (passive) state. > > my env is centos6.5 and use MariaDB-Galera-server for db > I found that when keystone connected the local db,often encountered the 401 > issue. > the keystone.log show the msg: > Invalid user token. Keystone response: {u'error': {u'message': u'The request > you have made requires authentication.', u'code': 401, u'title': > u'Unauthorized'}} > so I changed the keystone's connection to vip:33306 it seems that the issue > solved. > > but the keystone connected the vip db,there is another iusse. > poweroff the controller node which hold vip and when poweron it again > it is said that when the vip back to the controller node again the keystone > would lose the connection of db and it need about 10min to recovery > the keystone.log show the msg: > Database server has gone away: (2013, 'Lost connection to MySQL server during > query') > and the cmd like 'nova list' would timeout > I changed the keystone's connection to local db this issue seems solved. > > can anyone explain the two issues above ? and which should keystone connect > to,local or vip? > > thx. > > Keyang Li > [email protected] > > From: Ranjeet R > Date: 2015-08-27 01:18 > To: [email protected]; dev > Subject: RE: [opencontrail-dev] the mysql cfg in keystone.conf of openstack > ha env set to localhost:3306, why not use vip:33306 ? > Hello Keylang > > Keystone being the auth endpoint for all the Openstack components, it > accesses the DB(both reads/writes) more often than other components. Given > that, we did not want to introduce another level of redirection for Keystone > token creation/queries (VIP goes through HAProxy and load balances into a > physical MySQL server) and hence used the localhost for MySQL connection. > > It is a small optimization, but if you change the connection parameter to > VIP:33306, it should still work. > > Hope that helps! > Ranjeet > > From: Dev [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Wednesday, August 26, 2015 1:46 AM > To: dev <[email protected]> > Subject: [opencontrail-dev] the mysql cfg in keystone.conf of openstack ha > env set to localhost:3306, why not use vip:33306 ? > > in keystone-server-setup.sh, there are: > > if [ "$INTERNAL_VIP" != "none" ]; then > # Openstack HA specific config > openstack-config --set /etc/keystone/keystone.conf sql connection > mysql://keystone:keystone@$CONTROLLER:3306/keystone > else > openstack-config --set /etc/keystone/keystone.conf sql connection > mysql://keystone:[email protected]/keystone > fi > > > > > why not use vip:33306 like other component such as nova ? > > > any help will be appreciated > thx > > Keyang Li > [email protected] > _______________________________________________ > Dev mailing list > [email protected] > http://lists.opencontrail.org/mailman/listinfo/dev_lists.opencontrail.org
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