glad to see upstream maintaining the Fedora package now

i doubt "None of your Aria tables are indexed - add indexes immediately" because for now the only Aria table is your rsyslog database with the following definitions
_______________________________________________

CREATE TABLE `systemevents` (
  `ID` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `DeviceReportedTime` datetime DEFAULT NULL,
  `FromHost` varchar(30) CHARACTER SET latin1 COLLATE latin1_german1_ci NOT NULL,
  `Message` text CHARACTER SET latin1 COLLATE latin1_german1_ci,
  `SysLogTag` varchar(60) CHARACTER SET latin1 COLLATE latin1_german1_ci DEFAULT NULL,
  PRIMARY KEY (`ID`),
  KEY `FromHost` (`FromHost`),
  KEY `SysLogTag` (`SysLogTag`),
  KEY `DeviceReportedTime` (`DeviceReportedTime`),
  KEY `mail_support_index` (`FromHost`,`SysLogTag`,`DeviceReportedTime`)
) ENGINE=Aria AUTO_INCREMENT=3027882 DEFAULT CHARSET=utf8 PACK_KEYS=0 PAGE_CHECKSUM=0 DELAY_KEY_WRITE=1 ROW_FORMAT=DYNAMIC TRANSACTIONAL=0
_______________________________________________

>>  MySQLTuner 1.6.0 - Major Hayden <major>
[OK] Currently running supported MySQL version 10.0.21-MariaDB-log
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Aria +CSV -FEDERATED -InnoDB +MRG_MyISAM 
[--] Data in Aria tables: 35M (Tables: 2)
[--] Data in MyISAM tables: 662M (Tables: 5147)
[!!] Total fragmented tables: 206


-------- AriaDB Metrics -----------------------------------------------------
[--] AriaDB is enabled.
Use of uninitialized value $mycalc{"total_aria_indexes"} in pattern match (m//)
        at /usr/bin/mysqltuner line 2742, <> line 2 (#1)
    (W uninitialized) An undefined value was used as if it were already
    defined.  It was interpreted as a "" or a 0, but maybe it was a mistake.
    To suppress this warning assign a defined value to your variables.
    
    To help you figure out what was undefined, perl will try to tell you
    the name of the variable (if any) that was undefined.  In some cases
    it cannot do this, so it also tells you what operation you used the
    undefined value in.  Note, however, that perl optimizes your program
    anid the operation displayed in the warning may not necessarily appear
    literally in your program.  For example, "that $foo" is usually
    optimized into "that " . $foo, and the warning will refer to the
    concatenation (.) operator, even though there is no . in
    your program.
    
Use of uninitialized value $mycalc{"total_aria_indexes"} in numeric eq (==) at
        /usr/bin/mysqltuner line 2746, <> line 2 (#1)
[!!] None of your Aria tables are indexed - add indexes immediately