Witam, Tak więc ciągle kombinuję z MySQL i nie potrafie dojść z nim do porozumienia.
Mam serwer z 2x Xeon 2.8Ghz z 2GB RAM na którym chodzi też serwer WWW i mały pocztowy. Oczywiście chodzi na nim też MySQL. Do tego jest jeszcze drugi serwer WWW który korzysta z MySQL zainstalowanym na pierwszym serwerze. No i problem jest z tym drugim serwerem. Ma on jeden serwis WWW który bardzo z MySQL korzysta. Aktualnie jest tak że często jest komunikat o braku połączenia do serwera MySQL. Jest to trochę dziwne, bo jest to problem tylko z tego serwisu, inne które działają na tym serwerze nie mają takich błędów. Czemu tak się dzieje? Co mogę jeszcze zrobić? Co można zmienić w konfiguracji by to działało prawidłowo. Poniżej przedstawiam to co potrafię wyciągnąć z MySQL i w załączniku mój plik konfiguracyjny. Dzięki za pomoc :-) Paweł mysql> show status; +--------------------------------+------------+ | Variable_name | Value | +--------------------------------+------------+ | Aborted_clients | 8 | | Aborted_connects | 37 | | Binlog_cache_disk_use | 0 | | Binlog_cache_use | 0 | | Bytes_received | 3106728668 | | Bytes_sent | 1966274624 | | Com_admin_commands | 132542 | | Com_alter_db | 0 | | Com_alter_table | 0 | | Com_analyze | 0 | | Com_backup_table | 0 | | Com_begin | 0 | | Com_change_db | 5544689 | | Com_change_master | 0 | | Com_check | 0 | | Com_checksum | 0 | | Com_commit | 0 | | Com_create_db | 0 | | Com_create_function | 0 | | Com_create_index | 0 | | Com_create_table | 0 | | Com_dealloc_sql | 0 | | Com_delete | 4807564 | | Com_delete_multi | 132588 | | Com_do | 0 | | Com_drop_db | 0 | | Com_drop_function | 0 | | Com_drop_index | 0 | | Com_drop_table | 0 | | Com_drop_user | 0 | | Com_execute_sql | 0 | | Com_flush | 0 | | Com_grant | 0 | | Com_ha_close | 0 | | Com_ha_open | 0 | | Com_ha_read | 0 | | Com_help | 0 | | Com_insert | 4767553 | | Com_insert_select | 0 | | Com_kill | 0 | | Com_load | 0 | | Com_load_master_data | 0 | | Com_load_master_table | 0 | | Com_lock_tables | 0 | | Com_optimize | 0 | | Com_preload_keys | 0 | | Com_prepare_sql | 0 | | Com_purge | 0 | | Com_purge_before_date | 0 | | Com_rename_table | 0 | | Com_repair | 0 | | Com_replace | 18117 | | Com_replace_select | 0 | | Com_reset | 0 | | Com_restore_table | 0 | | Com_revoke | 0 | | Com_revoke_all | 0 | | Com_rollback | 0 | | Com_savepoint | 0 | | Com_select | 7673568 | | Com_set_option | 4921251 | | Com_show_binlog_events | 0 | | Com_show_binlogs | 7 | | Com_show_charsets | 35 | | Com_show_collations | 35 | | Com_show_column_types | 0 | | Com_show_create_db | 0 | | Com_show_create_table | 4 | | Com_show_databases | 17 | | Com_show_errors | 0 | | Com_show_fields | 8 | | Com_show_grants | 7 | | Com_show_innodb_status | 0 | | Com_show_keys | 12 | | Com_show_logs | 0 | | Com_show_master_status | 0 | | Com_show_ndb_status | 0 | | Com_show_new_master | 0 | | Com_show_open_tables | 0 | | Com_show_privileges | 0 | | Com_show_processlist | 0 | | Com_show_slave_hosts | 0 | | Com_show_slave_status | 0 | | Com_show_status | 3 | | Com_show_storage_engines | 0 | | Com_show_tables | 116 | | Com_show_variables | 84 | | Com_show_warnings | 0 | | Com_slave_start | 0 | | Com_slave_stop | 0 | | Com_stmt_close | 0 | | Com_stmt_execute | 0 | | Com_stmt_prepare | 0 | | Com_stmt_reset | 0 | | Com_stmt_send_long_data | 0 | | Com_truncate | 0 | | Com_unlock_tables | 0 | | Com_update | 2601920 | | Com_update_multi | 47 | | Connections | 5412806 | | Created_tmp_disk_tables | 5 | | Created_tmp_files | 681 | | Created_tmp_tables | 402646 | | Delayed_errors | 0 | | Delayed_insert_threads | 0 | | Delayed_writes | 0 | | Flush_commands | 1 | | Handler_commit | 0 | | Handler_delete | 4774270 | | Handler_discover | 0 | | Handler_read_first | 3532 | | Handler_read_key | 686107679 | | Handler_read_next | 1959637720 | | Handler_read_prev | 2064598777 | | Handler_read_rnd | 77731191 | | Handler_read_rnd_next | 2143855045 | | Handler_rollback | 0 | | Handler_update | 491919612 | | Handler_write | 120817695 | | Key_blocks_not_flushed | 0 | | Key_blocks_unused | 0 | | Key_blocks_used | 7248 | | Key_read_requests | 563529008 | | Key_reads | 155142 | | Key_write_requests | 567039 | | Key_writes | 375290 | | Max_used_connections | 111 | | Not_flushed_delayed_rows | 0 | | Open_files | 385 | | Open_streams | 0 | | Open_tables | 344 | | Opened_tables | 350 | | Qcache_free_blocks | 5106 | | Qcache_free_memory | 22827424 | | Qcache_hits | 9005184 | | Qcache_inserts | 6710572 | | Qcache_lowmem_prunes | 0 | | Qcache_not_cached | 963569 | | Qcache_queries_in_cache | 8067 | | Qcache_total_blocks | 21276 | | Questions | 44889659 | | Rpl_status | NULL | | Select_full_join | 240 | | Select_full_range_join | 0 | | Select_range | 95316 | | Select_range_check | 0 | | Select_scan | 1728088 | | Slave_open_temp_tables | 0 | | Slave_retried_transactions | 0 | | Slave_running | OFF | | Slow_launch_threads | 6 | | Slow_queries | 1 | | Sort_merge_passes | 374 | | Sort_range | 442595 | | Sort_rows | 493243433 | | Sort_scan | 275230 | | Ssl_accept_renegotiates | 0 | | Ssl_accepts | 0 | | Ssl_callback_cache_hits | 0 | | Ssl_cipher | | | Ssl_cipher_list | | | Ssl_client_connects | 0 | | Ssl_connect_renegotiates | 0 | | Ssl_ctx_verify_depth | 0 | | Ssl_ctx_verify_mode | 0 | | Ssl_default_timeout | 0 | | Ssl_finished_accepts | 0 | | Ssl_finished_connects | 0 | | Ssl_session_cache_hits | 0 | | Ssl_session_cache_misses | 0 | | Ssl_session_cache_mode | NONE | | Ssl_session_cache_overflows | 0 | | Ssl_session_cache_size | 0 | | Ssl_session_cache_timeouts | 0 | | Ssl_sessions_reused | 0 | | Ssl_used_session_cache_entries | 0 | | Ssl_verify_depth | 0 | | Ssl_verify_mode | 0 | | Ssl_version | | | Table_locks_immediate | 18321961 | | Table_locks_waited | 3353550 | | Threads_cached | 0 | | Threads_connected | 40 | | Threads_created | 5412805 | | Threads_running | 15 | | Uptime | 91375 | +--------------------------------+------------+ 186 rows in set (0.03 sec) mysql> show variables; +---------------------------------+-----------------------------------+ | Variable_name | Value | +---------------------------------+-----------------------------------+ | back_log | 50 | | basedir | /usr/ | | binlog_cache_size | 32768 | | bulk_insert_buffer_size | 8388608 | | character_set_client | latin2 | | character_set_connection | latin2 | | character_set_database | latin1 | | character_set_results | latin2 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | collation_connection | latin2_general_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | | concurrent_insert | ON | | connect_timeout | 5 | | datadir | /var/lib/mysql/mysqldb/db/ | | date_format | %Y-%m-%d | | datetime_format | %Y-%m-%d %H:%i:%s | | default_week_format | 0 | | delay_key_write | ON | | delayed_insert_limit | 100 | | delayed_insert_timeout | 300 | | delayed_queue_size | 1000 | | expire_logs_days | 0 | | flush | OFF | | flush_time | 0 | | ft_boolean_syntax | + -><()~*:""&| | | ft_max_word_len | 84 | | ft_min_word_len | 4 | | ft_query_expansion_limit | 20 | | ft_stopword_file | (built-in) | | group_concat_max_len | 1024 | | have_archive | YES | | have_bdb | NO | | have_blackhole_engine | NO | | have_compress | YES | | have_crypt | YES | | have_csv | NO | | have_example_engine | NO | | have_geometry | YES | | have_innodb | YES | | have_isam | YES | | have_ndbcluster | DISABLED | | have_openssl | YES | | have_query_cache | YES | | have_raid | YES | | have_rtree_keys | YES | | have_symlink | YES | | init_connect | | | init_file | | | init_slave | | | innodb_additional_mem_pool_size | 1048576 | | innodb_autoextend_increment | 8 | | innodb_buffer_pool_awe_mem_mb | 0 | | innodb_buffer_pool_size | 8388608 | | innodb_data_file_path | ibdata1:10M:autoextend | | innodb_data_home_dir | | | innodb_fast_shutdown | ON | | innodb_file_io_threads | 4 | | innodb_file_per_table | OFF | | innodb_flush_log_at_trx_commit | 1 | | innodb_flush_method | | | innodb_force_recovery | 0 | | innodb_lock_wait_timeout | 50 | | innodb_locks_unsafe_for_binlog | OFF | | innodb_log_arch_dir | | | innodb_log_archive | OFF | | innodb_log_buffer_size | 1048576 | | innodb_log_file_size | 5242880 | | innodb_log_files_in_group | 2 | | innodb_log_group_home_dir | ./ | | innodb_max_dirty_pages_pct | 90 | | innodb_max_purge_lag | 0 | | innodb_mirrored_log_groups | 1 | | innodb_open_files | 300 | | innodb_table_locks | ON | | innodb_thread_concurrency | 8 | | interactive_timeout | 28800 | | join_buffer_size | 131072 | | key_buffer_size | 8388600 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | language | /usr/share/mysql/english/ | | large_files_support | ON | | license | GPL | | local_infile | ON | | locked_in_memory | OFF | | log | OFF | | log_bin | OFF | | log_error | | | log_slave_updates | OFF | | log_slow_queries | OFF | | log_update | OFF | | log_warnings | 1 | | long_query_time | 10 | | low_priority_updates | OFF | | lower_case_file_system | OFF | | lower_case_table_names | 0 | | max_allowed_packet | 1048576 | | max_binlog_cache_size | 4294967295 | | max_binlog_size | 1073741824 | | max_connect_errors | 10 | | max_connections | 16384 | | max_delayed_threads | 20 | | max_error_count | 64 | | max_heap_table_size | 16777216 | | max_insert_delayed_threads | 20 | | max_join_size | 4294967295 | | max_length_for_sort_data | 1024 | | max_relay_log_size | 0 | | max_seeks_for_key | 4294967295 | | max_sort_length | 1024 | | max_tmp_tables | 32 | | max_user_connections | 20000 | | max_write_lock_count | 4294967295 | | myisam_data_pointer_size | 4 | | myisam_max_extra_sort_file_size | 2147483648 | | myisam_max_sort_file_size | 2147483647 | | myisam_recover_options | DEFAULT | | myisam_repair_threads | 1 | | myisam_sort_buffer_size | 8388608 | | myisam_stats_method | nulls_unequal | | ndb_autoincrement_prefetch_sz | 32 | | ndb_force_send | ON | | ndb_use_exact_count | ON | | ndb_use_transactions | ON | | net_buffer_length | 16384 | | net_read_timeout | 30 | | net_retry_count | 10 | | net_write_timeout | 60 | | new | OFF | | old_passwords | OFF | | open_files_limit | 65535 | | pid_file | /var/lib/mysql/mysqldb/mysql.pid | | port | 3306 | | preload_buffer_size | 32768 | | protocol_version | 10 | | query_alloc_block_size | 8192 | | query_cache_limit | 4194304 | | query_cache_min_res_unit | 4096 | | query_cache_size | 33554432 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | | range_alloc_block_size | 2048 | | read_buffer_size | 131072 | | read_only | OFF | | read_rnd_buffer_size | 262144 | | relay_log_purge | ON | | relay_log_space_limit | 0 | | rpl_recovery_rank | 0 | | secure_auth | OFF | | server_id | 0 | | skip_external_locking | ON | | skip_networking | OFF | | skip_show_database | OFF | | slave_net_timeout | 3600 | | slave_transaction_retries | 0 | | slow_launch_time | 2 | | socket | /var/lib/mysql/mysqldb/mysql.sock | | sort_buffer_size | 2097144 | | sql_mode | | | sql_notes | ON | | sql_warnings | ON | | storage_engine | MyISAM | | sync_binlog | 0 | | sync_frm | ON | | sync_replication | 0 | | sync_replication_slave_id | 0 | | sync_replication_timeout | 0 | | system_time_zone | CEST | | table_cache | 24570 | | table_type | MyISAM | | thread_cache_size | 0 | | thread_stack | 196608 | | time_format | %H:%i:%s | | time_zone | SYSTEM | | tmp_table_size | 33554432 | | tmpdir | | | transaction_alloc_block_size | 8192 | | transaction_prealloc_size | 4096 | | tx_isolation | REPEATABLE-READ | | version | 4.1.16 | | version_comment | PLD Linux Distribution MySQL RPM | | version_compile_machine | i686 | | version_compile_os | pld-linux-gnu | | wait_timeout | 28800 | +---------------------------------+-----------------------------------+ 189 rows in set (0.00 sec)
; The MySQL server configuration file. ; One can use all long options that the mysqld supports. ; Run mysqld with --help to get a whole list of available options ; $Id: mysqld.conf,v 1.21 2005/11/07 17:30:44 glen Exp $ ; This section must be the first! [mysqld] datadir = /var/lib/mysql/mysqldb/db pid-file = /var/lib/mysql/mysqldb/mysql.pid port = 3306 socket = /var/lib/mysql/mysqldb/mysql.sock user = mysql ;character-set-server=latin2 ;collation-server=latin2_general_ci ;skip-character-set-client-handshake ; set default charset ;default-character-set = latin1 ; Use passwords compatible with old 4.0 mysqld ;old-passwords ; Don't use system locking ;skip-locking ; Don't allow connections over the network by default ;skip-networking ; IP address to bind to bind-address=10.22.2.5 ; no dns ;skip-name-resolve ; Emergency option. Use only if you really need this. ;skip-grant-tables ; replication options ;server-id=2 ; skip startup of slave ;skip-slave-start ; slave setup ;relay-log=slave-relay-bin ;master-host=master ;master-user=replica ;master-port=3306 ;master-password=replica ; master setup ;log-bin ; databases to be included in binlog ;binlog-do-db=db1 ; or excluded ;binlog-ignore-db=mysql ;binlog-ignore-db=test ; Don't flush key buffers between writes for any MyISAM ; set this if you have dedicated slave server where writes aren't important ;delay-key-write-for-all-tables ; Log connections and queries. It slows down MySQL so it's disabled by default ;log = /var/log/mysql/log ; Log all updates. ;log-update = /var/log/mysql/update ; Log some extra information to update log ;log-long-format ; Log all isam changes ;log-isam = /var/log/mysql/isamlog ; Language ;language = polish ; ; Internal server variables ; ;set-variable = back_log=5 set-variable = connect_timeout=5 ;set-variable = delayed_insert_timeout=300 ;set-variable = delayed_insert_limit=100 ;set-variable = flush_time=0 ;set-variable = join_buffer_size=131072 ;set-variable = key_buffer_size=8M ;set-variable = long_query_time=10 ;set-variable = max_allowed_packet=1M set-variable = max_connections=20000 set-variable = max_user_connections=20000 ;set-variable = max_connect_errors=10 ;set-variable = max_delayed_insert_threads=20 ;set-variable = delayed_queue_size=1000 ;set-variable = max_join_size=4294967295 ;set-variable = max_sort_length=1024 ;set-variable = max_write_lock_count=4294967295 ;set-variable = net_buffer_length=16384 ;set-variable = record_buffer=131072 ;set-variable = sort_buffer_size=2M ;set-variable = table_cache=64 ;set-variable = tmp_table_size=1M ;set-variable = max_heap_table_size=32M ;set-variable = thread_cache_size=16 ;set-variable = thread_stack=65536 ; Try number of CPU's*2 set-variable = thread_concurrency=8 set-variable = wait_timeout=7200 set-variable = query_cache_size=32M set-variable = query_cache_limit=4M ; replication local log ;set-variable = max_relay_log_size=256M ; max size of master binlog files ;set-variable = max_binlog_size=256M ; ; MyISAM tables options ; ; Don't flush key buffers between writes for any MyISAM ;delay-key-write-for-all-tables ; Repair automatically on open if the table wasn't closed properly. myisam-recover ; ;set-variable = myisam_sort_buffer_size=4M ; ; InnoDB tables options (see MySQL manual) ; ;skip-innodb ;innodb_data_home_dir = /var/lib/mysql/innodb/data ;innodb_data_file_path = 00:10M;01:20M ;set-variable = innodb_mirrored_log_groups=1 ;innodb_log_group_home_dir = /var/lib/mysql/innodb/log ;set-variable = innodb_log_files_in_group=3 ;set-variable = innodb_log_file_size=30M ;set-variable = innodb_log_buffer_size=8M ;innodb_flush_log_at_trx_commit=1 ;innodb_log_arch_dir = /var/lib/mysql/innodb/log ;innodb_log_archive=0 ;set-variable = innodb_buffer_pool_size=80M ;set-variable = innodb_additional_mem_pool_size=10M ;set-variable = innodb_file_io_threads=4 ;set-variable = innodb_lock_wait_timeout=50 ; used for logs rotation [mysqladmin] user = mysql_logrotate password = ; vim:syn=dosini
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