Add database slave_connection config option

Registered by renminmin on 2015-07-08

Database slave_connection option should be added in openstack-chef cookbooks. The slave_connection is very useful option, when the openstack database is active-slave mode or active-active mode which need read/write spliting. According to openstack-dev email discussion(http://lists.openstack.org/pipermail/openstack-dev/2014-May/035264.html), many members are using galera cluster as openstack services database which is required splitting read and write sql query. The slave_connection option is to resolve this issue.
https://wiki.openstack.org/wiki/Slave_usage

Blueprint information

Status:
Complete
Approver:
Mark Vanderwiel
Priority:
Medium
Drafter:
renminmin
Direction:
Approved
Assignee:
renminmin
Definition:
Approved
Series goal:
Accepted for kilo
Implementation:
Implemented
Milestone target:
milestone icon kilo-rc1
Started by
renminmin on 2015-07-10
Completed by
renminmin on 2015-09-06

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:bp/sql-slave-connection-support,n,z

#Add db slave support to Common
Addressed by: https://review.openstack.org/199917
    Add database slave connection support
#Add db slave support to Network
Addressed by: https://review.openstack.org/203583
    Add database slave connection configure

#Add db slave support to Compute
Addressed by: https://review.openstack.org/217460
    Add database slave connection configure
#Add db slave support to Block Storage
Addressed by: https://review.openstack.org/217989
    Add database slave connection configure

(?)

Work Items

Work items:
Add db slave support to Common: DONE
Add db slave support to Network: DONE
Add db slave support to Compute: DONE
Add db slave support to Block Storage: DONE

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