I didn't suggest it as "solution", just wondering if huge default value can cause problems.
The real problem is that memory consumption of mysqld is growing in time until the container oom and is killed;
What would be my "read config": list of system variables?
+---------------------------------------------+------------------------+
| Variable_name | Value |
+---------------------------------------------+------------------------+
| innodb_adaptive_flushing | ON |
| innodb_adaptive_flushing_lwm | 10.000000 |
| innodb_adaptive_hash_index | ON |
| innodb_adaptive_hash_index_partitions | 1 |
| innodb_adaptive_max_sleep_delay | 150000 |
| innodb_additional_mem_pool_size | 8388608 |
| innodb_api_bk_commit_interval | 5 |
| innodb_api_disable_rowlock | OFF |
| innodb_api_enable_binlog | OFF |
| innodb_api_enable_mdl | OFF |
| innodb_api_trx_level | 0 |
| innodb_autoextend_increment | 64 |
| innodb_autoinc_lock_mode | 2 |
| innodb_background_scrub_data_check_interval | 3600 |
| innodb_background_scrub_data_compressed | OFF |
| innodb_background_scrub_data_interval | 604800 |
| innodb_background_scrub_data_uncompressed | OFF |
| innodb_buf_dump_status_frequency | 0 |
| innodb_buffer_pool_dump_at_shutdown | OFF |
| innodb_buffer_pool_dump_now | OFF |
| innodb_buffer_pool_dump_pct | 100 |
| innodb_buffer_pool_filename | ib_buffer_pool |
| innodb_buffer_pool_instances | 8 |
| innodb_buffer_pool_load_abort | OFF |
| innodb_buffer_pool_load_at_startup | OFF |
| innodb_buffer_pool_load_now | OFF |
| innodb_buffer_pool_populate | OFF |
| innodb_buffer_pool_size | 2147483648 |
| innodb_change_buffer_max_size | 25 |
| innodb_change_buffering | all |
| innodb_checksum_algorithm | INNODB |
| innodb_checksums | ON |
| innodb_cleaner_lsn_age_factor | HIGH_CHECKPOINT |
| innodb_cmp_per_index_enabled | OFF |
| innodb_commit_concurrency | 0 |
| innodb_compression_algorithm | none |
| innodb_compression_failure_threshold_pct | 5 |
| innodb_compression_level | 6 |
| innodb_compression_pad_pct_max | 50 |
| innodb_concurrency_tickets | 5000 |
| innodb_corrupt_table_action | assert |
| innodb_data_file_path | ibdata1:12M:autoextend |
| innodb_data_home_dir | |
| innodb_default_encryption_key_id | 1 |
| innodb_defragment | OFF |
| innodb_defragment_fill_factor | 0.900000 |
| innodb_defragment_fill_factor_n_recs | 20 |
| innodb_defragment_frequency | 40 |
| innodb_defragment_n_pages | 7 |
| innodb_defragment_stats_accuracy | 0 |
| innodb_disable_sort_file_cache | OFF |
| innodb_disallow_writes | OFF |
| innodb_doublewrite | ON |
| innodb_empty_free_list_algorithm | BACKOFF |
| innodb_encrypt_log | OFF |
| innodb_encrypt_tables | OFF |
| innodb_encryption_rotate_key_age | 1 |
| innodb_encryption_rotation_iops | 100 |
| innodb_encryption_threads | 0 |
| innodb_fake_changes | OFF |
| innodb_fast_shutdown | 1 |
| innodb_fatal_semaphore_wait_threshold | 600 |
| innodb_file_format | Antelope |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | ON |
| innodb_flush_log_at_timeout | 1 |
| innodb_flush_log_at_trx_commit | 1 |
| innodb_flush_method | O_DIRECT |
| innodb_flush_neighbors | 1 |
| innodb_flushing_avg_loops | 30 |
| innodb_force_load_corrupted | OFF |
| innodb_force_primary_key | OFF |
| innodb_force_recovery | 0 |
| innodb_foreground_preflush | EXPONENTIAL_BACKOFF |
| innodb_ft_aux_table | |
| innodb_ft_cache_size | 8000000 |
| innodb_ft_enable_diag_print | OFF |
| innodb_ft_enable_stopword | ON |
| innodb_ft_max_token_size | 84 |
| innodb_ft_min_token_size | 3 |
| innodb_ft_num_word_optimize | 2000 |
| innodb_ft_result_cache_limit | 2000000000 |
| innodb_ft_server_stopword_table | |
| innodb_ft_sort_pll_degree | 2 |
| innodb_ft_total_cache_size | 640000000 |
| innodb_ft_user_stopword_table | |
| innodb_idle_flush_pct | 100 |
| innodb_immediate_scrub_data_uncompressed | OFF |
| innodb_instrument_semaphores | OFF |
| innodb_io_capacity | 400 |
| innodb_io_capacity_max | 2000 |
| innodb_kill_idle_transaction | 0 |
| innodb_large_prefix | OFF |
| innodb_lock_wait_timeout | 50 |
| innodb_locking_fake_changes | ON |
| innodb_locks_unsafe_for_binlog | ON |
| innodb_log_arch_dir | ./ |
| innodb_log_arch_expire_sec | 0 |
| innodb_log_archive | OFF |
| innodb_log_block_size | 512 |
| innodb_log_buffer_size | 8388608 |
| innodb_log_checksum_algorithm | INNODB |
| innodb_log_compressed_pages | OFF |
| innodb_log_file_size | 50331648 |
| innodb_log_files_in_group | 2 |
| innodb_log_group_home_dir | ./ |
| innodb_lru_scan_depth | 1024 |
| innodb_max_bitmap_file_size | 104857600 |
| innodb_max_changed_pages | 1000000 |
| innodb_max_dirty_pages_pct | 75.000000 |
| innodb_max_dirty_pages_pct_lwm | 0.001000 |
| innodb_max_purge_lag | 0 |
| innodb_max_purge_lag_delay | 0 |
| innodb_mirrored_log_groups | 1 |
| innodb_monitor_disable | |
| innodb_monitor_enable | |
| innodb_monitor_reset | |
| innodb_monitor_reset_all | |
| innodb_mtflush_threads | 8 |
| innodb_old_blocks_pct | 37 |
| innodb_old_blocks_time | 1000 |
| innodb_online_alter_log_max_size | 134217728 |
| innodb_open_files | 400 |
| innodb_optimize_fulltext_only | OFF |
| innodb_page_size | 16384 |
| innodb_prefix_index_cluster_optimization | OFF |
| innodb_print_all_deadlocks | OFF |
| innodb_purge_batch_size | 300 |
| innodb_purge_threads | 1 |
| innodb_random_read_ahead | OFF |
| innodb_read_ahead_threshold | 56 |
| innodb_read_io_threads | 4 |
| innodb_read_only | OFF |
| innodb_replication_delay | 0 |
| innodb_rollback_on_timeout | OFF |
| innodb_rollback_segments | 128 |
| innodb_sched_priority_cleaner | 19 |
| innodb_scrub_log | OFF |
| innodb_scrub_log_speed | 256 |
| innodb_show_locks_held | 10 |
| innodb_show_verbose_locks | 0 |
| innodb_simulate_comp_failures | 0 |
| innodb_sort_buffer_size | 1048576 |
| innodb_spin_wait_delay | 6 |
| innodb_stats_auto_recalc | ON |
| innodb_stats_method | nulls_equal |
| innodb_stats_modified_counter | 0 |
| innodb_stats_on_metadata | OFF |
| innodb_stats_persistent | ON |
| innodb_stats_persistent_sample_pages | 20 |
| innodb_stats_sample_pages | 8 |
| innodb_stats_traditional | ON |
| innodb_stats_transient_sample_pages | 8 |
| innodb_status_output | OFF |
| innodb_status_output_locks | OFF |
| innodb_strict_mode | OFF |
| innodb_support_xa | ON |
| innodb_sync_array_size | 1 |
| innodb_sync_spin_loops | 30 |
| innodb_table_locks | ON |
| innodb_thread_concurrency | 0 |
| innodb_thread_sleep_delay | 10000 |
| innodb_track_changed_pages | OFF |
| innodb_undo_directory | . |
| innodb_undo_logs | 128 |
| innodb_undo_tablespaces | 0 |
| innodb_use_atomic_writes | OFF |
| innodb_use_fallocate | OFF |
| innodb_use_global_flush_log_at_trx_commit | ON |
| innodb_use_mtflush | OFF |
| innodb_use_native_aio | ON |
| innodb_use_stacktrace | OFF |
| innodb_use_sys_malloc | ON |
| innodb_use_trim | OFF |
| innodb_version | 5.6.28-76.1 |
| innodb_write_io_threads | 4 |