我有 2 个 MySQL 服务器：
主服务器：mysql 版本 5.7.14
从服务器：Docker 容器中的 mysql 版本 5.7.14（来自官方 docker hub）。
GTID 复制。
我有两个问题：
- Binlogs 增长非常快。我设置了 2 天限制轮换，但这无济于事 - 每天 binlog 文件夹至少增加两次（第一天 25Gb，第二天 50，第三天 80 等）。
- 从服务器“落后于主服务器的秒数”增加。
本地网络中的服务器 (100 mbit/s)，SSD 磁盘，数据库大小接近 40Gb。
我使用 Percona Xtrabackup 为 slave 克隆 db。
也许服务器的配置不正确&我需要修复一些东西？
这是大师 my.cnf 文件：
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
pid-file = /var/run/mysqld/mysqld.pid
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
explicit_defaults_for_timestamp
max_allowed_packet = 256M
log-error = /var/log/mysql/error.log
symbolic-links=0
!includedir /etc/mysql/conf.d/
innodb_buffer_pool_size=15000M
innodb_buffer_pool_instances=1
sql_mode = ''
slow_query_log = 1
slow_query_log_file = '/var/log/mysql/slow.log'
long_query_time = 1
log_queries_not_using_indexes = 0
#skip-grant-tables
default_week_format = 1
skip-name-resolve
sort_buffer_size=4M
join_buffer_size=4M
innodb_sort_buffer_size=4M
tmp_table_size=5000M
max_heap_table_size=5000M
[mysqld]
server-id = 1
binlog-format = row
gtid_mode=ON
enforce-gtid-consistency=ON
log-slave-updates
log_bin = /var/log/mysql/mysql-bin.log
performance_schema_max_digest_length = 8192
max_digest_length = 8192
max_binlog_size= 1G
expire_logs_days = 2
binlog-ignore-db=check_passport
replicate-ignore-db=check_passport
sync_binlog = 1
innodb_flush_log_at_trx_commit = 1
key_buffer_size = 16M
innodb_flush_method = O_DIRECT
max_connections = 200
#innodb_temp_data_file_path=ibtmp1:12M:autoextend:max:5G
这是从服务器的my.cnf
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
sql_mode = ""
character_set_server = utf8
collation_server = utf8_general_ci
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
language = /usr/share/mysql/english
old_passwords = 0
bind-address = 127.0.0.1
skip-host-cache
skip-name-resolve
skip-external-locking
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
max_allowed_packet = 256M
#key_buffer_size = 16M
innodb_buffer_pool_size = 2048M
innodb_log_file_size = 256M
innodb_file_per_table = 1
innodb_flush_method = O_DIRECT
innodb_flush_log_at_trx_commit = 1
max_connections = 136
query_cache_size = 0
slow_query_log = /var/log/mysql/mysql-slow.log
long_query_time = 1
expire_logs_days = 2
max_binlog_size = 1G
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysqld]
server-id = 2
binlog-format = row
gtid_mode=ON
enforce-gtid-consistency=ON
relay-log = /var/log/mysql/mysql-relay-bin.log
log_bin = /var/log/mysql/mysql-bin.log
skip_slave_start
log_slave_updates = 0
read_only = ON
innodb_file_per_table = ON
#innodb_buffer_pool_size = 3G
innodb_flush_method = O_DIRECT
innodb_flush_log_at_trx_commit = 1
max_binlog_size = 1G
#max_relay_log_size = 1G
#relay_log_space_limit = 20G
relay_log_recovery = ON
expire_logs_days = 2
#slave-parallel-workers = 0
binlog-ignore-db=check_passport
replicate-ignore-db=check_passport
replicate-ignore-table=gfk.application_insurance
replicate-ignore-table=gfk.archive_client_building
replicate-ignore-table=gfk.comments_passwords
replicate-ignore-table=gfk.date_interval
SHOW SLAVE STATUS\G的输出
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.4
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.004720
Read_Master_Log_Pos: 518759418
Relay_Log_File: mysql-relay-bin.000188
Relay_Log_Pos: 213202356
Relay_Master_Log_File: mysql-bin.004703
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: check_passport
Replicate_Do_Table:
Replicate_Ignore_Table: gfk.application_insurance,gfk.date_interval,gfk.archive_client_building,gfk.comments_passwords
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 213202143
Relay_Log_Space: 18773097825
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: Yes
Master_SSL_CA_File: /var/lib/master_cert/ca.pem
Master_SSL_CA_Path:
Master_SSL_Cert: /var/lib/master_cert/client-cert.pem
Master_SSL_Cipher:
Master_SSL_Key: /var/lib/master_cert/client-key.pem
Seconds_Behind_Master: 14488
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 8ab33cfb-bb00-11e6-84cd-fa163eb352dd
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: System lock
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 8ab33cfb-bb00-11e6-84cd-fa163eb352dd:62276836-70424802
Executed_Gtid_Set: 8ab33cfb-bb00-11e6-84cd-fa163eb352dd:1-67413143
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version: