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Description of problem: With the current version of PyMySQL in RDO, I am unable to configure TLS parameters in the configuration file. This functionality was introduced in a further release (specifically version 0.7.11 https://github.com/PyMySQL/PyMySQL/commit/f6d28536493596e4ff7b87cf4d5201d657dae44d ). This is needed since currently there is no way to configure such things (such as the CA and enabling TLS for the client connections, via oslo.db. So adding these parameters via the configuration file solves the issue.
Testing plan: This bug is about bumping the version of PyMySQL to ensure that python client can read SSL config to connect to MySQL/galera over TLS, which wasn't the case in prior version. So the basic test strategy is "Deploy an overcloud with 'TLS everywhere' enabled". If the deploy is succesfull, you validated this bug.
Package python-PyMySQL-0.7.11-1.el7ost is present in osp12 builds on controllers.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:3462