openstack-ansible-galera_server/decrease-mariadb-waittimeout-setting-ddaae0f2e1d31ee1.yaml at fc83b28723b860fbc040465a34611ed50c36e703 - openstack-ansible-galera_server - OpenDev: Free Software Needs Free Tools

openstack/openstack-ansible-galera_server

Bjoern Teipel a1636b3bb3 Decrease MariaDB wait timeout

This MariaDB setting uses the same timeout for SQL connections
as configured inside SQL Alchemy (pool_recycle) and prevent possibly
SQL session build up due to a large default setting (8 Hours).

Nova and Neutron are using a idle_timeout of 3600 by default,
for example
https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L101
and respectively for Neutron
https://github.com/openstack/neutron/blob/stable/liberty/etc/neutron.conf#L761

Change-Id: I273739c3c10616cac148aeb839154e0fb3359bca
Closes-Bug: #1571682

2016-04-18 10:44:49 -05:00

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 upgrade:
    - The MariaDB wait_timeout setting is decreased to 1h to match the
      SQL Alchemy pool recycle timeout, in order to prevent unnecessary
      database session buildups.