[MySQL binlog] not readable from MariaDB

[rdxmb]

Relevant telegraf.conf:

[[inputs.mysql]]
  servers = ["root:$MYSQL_ROOT_PASSWORD@tcp(127.0.0.1:3306)/?tls=false"]
  gather_table_schema = false
  gather_process_list = false
  gather_user_statistics = false
  gather_info_schema_auto_inc = false
  gather_innodb_metrics = false
  gather_slave_status = true
  gather_binary_logs = true
  gather_table_io_waits = false
  gather_table_lock_waits = false
  gather_index_io_waits = false
  gather_event_waits = false
  gather_file_events_stats = false
  gather_perf_events_statements = false
  interval_slow = "30m"
  metric_version = 2

System info:

Kubernetes POD including MariaDB and telegraf container

2019-02-12T20:03:03Z I! Starting Telegraf 1.9.4
2019-02-12T20:03:03Z I! Using config file: /etc/telegraf/telegraf.conf
2019-02-12T20:04:00Z E! [inputs.mysql]: Error in plugin: Error 1381: You are not using binary logging

with official MariaDB-Image tag: "10.3.12" (which is "latest" at the moment)

mounted config to /etc/mysql.d/slave.cnf

[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking

sql_mode = "ONLY_FULL_GROUP_BY,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

bind-address            = 0.0.0.0
key_buffer_size         = 16M
max_allowed_packet      = 16M                                                                          
thread_stack            = 192K                                                                         
thread_cache_size       = 8                                                                            
myisam-recover-options  = BACKUP                                                                       
query_cache_limit       = 1M                                                                           
query_cache_size        = 16M                                                                          
log_error = /var/log/mysql/error.log                                                                   
server-id               = 102                                                                          
read_only               = 1                                                                            
report-host             = myhost
log_bin                 = /var/log/mysql/mysql-bin.log                                                 
expire_logs_days        = 10                                                                           
max_binlog_size         = 100M                                                                         
binlog_do_db            = pdns
innodb_file_per_table   = 1

[rdxmb]

sorry, this was a problem with a non-parsed mysql-config