Kevin Carter 515ab131fa Implement a proper WSREP check for galera ... The galera cluster rely on WSREP for cluster consistency. While the default MySQL monitor will allow us to know when the database node is minimally functional it does not provide the ability to query the node state allowing loadbalancers, operators, and deployers to know a node is healthy prior to being allowed to accept connections. This change implements the checkcluster script as provided by the fine folks at Percona. The implementation of this check follows the guild-lines noted here [0]. With this in-place, we'll be able to convert our haproxy check for the galera cluster nodes to use an HTTP check on port 9200 instead of the default MySQL login which will provide for a more robust and fault tolerant cluster. [0] https://www.percona.com/doc/percona-xtradb-cluster/LATEST/howtos/virt_sandbox.html Combined backport of: - https://review.openstack.org/520665 - https://review.openstack.org/523850 Conflicts: >------handlers/main.yml >------tests/test-galera-server-functional.yml >------vars/suse-42.yml Closes-Bug: #1665667 Change-Id: Ie1b3b9724dd33de1d90634166e585ecceb1f4c96 Signed-off-by: Kevin Carter <kevin.carter@rackspace.com> (cherry picked from commit ed739a5243)		2017-12-13 12:22:26 +00:00
..
main.yml	Implement a proper WSREP check for galera	2017-12-13 12:22:26 +00:00