Продолжение!
Коллеги подскажите! Похоже дело в настройках. При таких-же настройках не выполняется DELETE на других связках.
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
sql_mode = "ALLOW_INVALID_DATES"
#
log-error=/var/log/mariadb/error.log
slow_query_log
slow_query_log_file=/var/log/mariadb/slow.log
long_query_time = 1
log-queries-not-using-indexes
#
query_cache_type=1
query_cache_size=16777216
query_cache_limit=1048576
#
auto_increment_offset=2
auto_increment_increment=2
#
log-bin=mysql-bin
binlog-do-db=asterisk
binlog-do-db=opensips
max_binlog_size=500M
expire_logs_days=5
server_id=2
#
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
#
binlog-format=MIXED
log-slave-updates=1
#
replicate-do-db=asterisk
replicate-do-db=opensips
#
replicate-ignore-db=mysql
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
#
innodb_file_per_table
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d