Comment 11 for bug 1617400

Reviewed: https://review.openstack.org/462134
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=afa04a86d9e7acb677366325ce42cc77e0c8a324
Submitter: Jenkins
Branch: stable/ocata

commit afa04a86d9e7acb677366325ce42cc77e0c8a324
Author: Vladimir Kuklin <email address hidden>
Date: Fri Apr 28 13:43:49 2017 +0300

    Fix race condition for primary component bootstrap

    Create node is_pc flag before starting to check if there
    is more than one of those flags. Thus, we avoid race condition
    when there is 0 is_pc flags and galera starts with --wsrep-new-cluster
    on 2 nodes.

    We set it before the check and, as setting them is synchronous through
    Pacemaker CIB, in that case when >1 nodes attempt to bootstrap with
    --wsrep-new-cluster, only one node will see <= 1 is_pc flags. Others
    will see more than one and fail and reattempt to start. At that point
    one of the nodes will already be bootstrapped, thus reelection will not
    be triggered and the section of bootstrap will be skipped

    Change-Id: I82a71132eef7877ac7ab1ed04263044b3b1e8d9b
    Closes-bug: #1617400
    Signed-off-by: Sergii Golovatiuk <email address hidden>