Comment 15 for bug 1728111

Looking at the charm: https://jujucharms.com/percona-cluster/
It does have a symlink of "leader-elected => percona_hooks.py"
but the Python code itself is hitting this line:
    try:
        hooks.execute(sys.argv)
    except UnregisteredHookError as e:
        log('Unknown hook {} - skipping.'.format(e))

So its more a case that you're not actually responding when leader-elected really is fired.