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+..
+  Copyright 2019 Canonical Ltd.
+
+  This work is licensed under a Creative Commons Attribution 3.0
+  Unported License.
+  http://creativecommons.org/licenses/by/3.0/legalcode
+
+..
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+  http://www.tele3.cz/jbar/rest/rest.html
+
+=======
+MySQL 8
+=======
+
+Introduce charmed and enterprise grade MySQL 8 + InnoDB + MySQL Router as a
+database solution for OpenStack models with the intention of making it the
+default as of Ubuntu 20.04.
+
+Problem Description
+===================
+
+Percona XtraDB Cluster is in Universe, has failed a Main Inclusion Request
+process, and will not be carried into the next LTS relative to Charmed
+OpenStack deployments.
+
+
+Proposed Change
+===============
+
+These will be wholly new charms, not based in any way on existing MySQL or
+Percona-Cluster charms, and without a charm upgrade path.
+
+Instead of in-place upgrades a migration solution will be provided to allow
+existing Ubuntu 18.04 LTS deployments using the percona-cluster charm to
+migrate databases directly to an Ubuntu 20.04 LTS deployment based on
+mysql-innodb-cluster. Full details will be provided as an update to this spec.
+
+The charms will be promulgated to the following locations:
+
+- cs:mysql-innodb-cluster
+- cs:mysql-router
+
+
+What versions of the operating system are affected or required?
+19.10 (Eoan) and 20.04
+
+What versions of OpenStack are affected or required?
+Train and above
+
+What version of Juju is required?
+Juju 2.7+
+
+
+Alternatives
+------------
+
+The alternative is to bring percona-cluster into main for 20.04.
+
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Primary assignee:
+  thedac
+
+
+Gerrit Topic
+------------
+
+Use Gerrit topic "mysql8" for all patches related to this spec.
+
+.. code-block:: bash
+
+    git-review -t mysql8
+
+
+Work Items
+----------
+
+The implementation consists of the following charms:
+
+- mysql-innodb-cluster
+
+  The primary charm that will handle the mysql implementation.
+
+   - Install MySQL 8
+   - Handle InnoDB clustering
+
+
+- interface-mysql-innodb-cluster
+
+  The peer relationship for mysql-innodb-cluster
+
+
+- interface-mysql-shared provides
+
+  The interface mysql-shared provides side
+
+
+- mysql-router
+
+  The subordinate charm that will relate to the application charm and to
+  mysql-innodb-cluster.
+
+  - Proxies DB requests and responses
+
+
+- interface-mysql-router
+
+   The interface between the application and mysql-router
+
+
+- mysqlsh snap
+
+  The mysqlsh tool that manages the mysql innodb cluster
+
+  - snapped from upstream source
+
+
+Repositories
+------------
+
+
+- charm-mysql-innodb-cluster
+
+- charm-interface-mysql-innodb-cluster
+
+- charm-mysql-router
+
+- charm-interface-mysql-router
+
+- mysqlsh-snap
+
+Documentation
+-------------
+
+Each charm and interface will contain a README with instructions on deploying
+and relating the charm.
+
+Potentially an OpenStack deployment guide appendix to discuss clustering and
+cluster management.
+
+
+Security
+--------
+
+MySQL 8 will now be in main with security auditing which percona-cluster never
+had.
+
+The code reviews of the work items should include a security conscious review
+approach.
+
+
+Testing
+-------
+
+Unit tests for each repository.
+
+Zaza functional tests for each charm. This will include end to end testing with
+applications, mysql-router and mysql-inndob-cluster.
+
+
+Dependencies
+============
+
+- Eoan+ mysql8 packaging
+- MySQL shell