主从配置详细过程： 环境准备： 配置好服务器，主从服务器都安装并启动mysql数据库 # 添加读写账号和只读账号，应用配置中，写主库用读写账号，统计从库数据yoga只读账号 grant select,insert,update,delete on f_crack_check.* to f_crack_check_user@"%" identified by "pass"; grant select on f_crack_check.* to f_crack_check_read@"%" identified by "pass"; flush privileges; 注意：当配置好主从后，添加账号，或者任何写库的操作都需要在主库中操作，否则可能引起主从不一致 # 为了方便后面切换服务器方便，内网使用域名的方式进行数据库链接 主库连接地址：172.30.0.51 f_crack_check.master.prod.mysql 从库连接地址：172.30.0.52 f_crack_check.slave01.prod.mysql 主从数据库服务器均安装xtrabackup工具 wget http://repo.percona.com/tools/yum/release/7/RPMS/x86_64/percona-xtrabackup-24-2.4.12-1.el7.x86_64.rpm yum localinstall percona-xtrabackup-24-2.4.12-1.el7.x86_64.rpm -y 1.主库中备份，将mysql数据库整个备份到/opt/目录下 # innobackupex --defaults-file="/etc/my.cnf" --user=root -p'pass' --socket=/tmp/mysql.sock /opt xtrabackup: recognized server arguments: --datadir=/data/mysql_data --tmpdir=/tmp --open_files_limit=10000 --log_bin=mysql-bin --server-id=51 --innodb_data_home_dir=/data/mysql_data --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_group_home_dir=/data/mysql_data --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --innodb_buffer_pool_size=3G --innodb_log_file_size=256M --innodb_log_buffer_size=64M --innodb_log_files_in_group=3 --innodb_flush_log_at_trx_commit=1 --innodb_file_per_table=1 --innodb_read_io_threads=8 --innodb_write_io_threads=8 --innodb_max_dirty_pages_pct=75 --innodb_flush_method=O_DIRECT --innodb_autoextend_increment=32 xtrabackup: recognized client arguments: --datadir=/data/mysql_data --tmpdir=/tmp --open_files_limit=10000 --log_bin=mysql-bin --server-id=51 --innodb_data_home_dir=/data/mysql_data --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_group_home_dir=/data/mysql_data --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --innodb_buffer_pool_size=3G --innodb_log_file_size=256M --innodb_log_buffer_size=64M --innodb_log_files_in_group=3 --innodb_flush_log_at_trx_commit=1 --innodb_file_per_table=1 --innodb_read_io_threads=8 --innodb_write_io_threads=8 --innodb_max_dirty_pages_pct=75 --innodb_flush_method=O_DIRECT --innodb_autoextend_increment=32 190809 19:38:37 innobackupex: Starting the backup operation IMPORTANT: Please check that the backup run completes successfully. At the end of a successful backup run innobackupex prints "completed OK!". 190809 19:38:37 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;port=3306;mysql_socket=/tmp/mysql.sock' as 'root' (using password: YES). Failed to connect to MySQL server as DBD::mysql module is not installed at - line 1327. 190809 19:38:37 Connecting to MySQL server host: localhost, user: root, password: set, port: 3306, socket: /tmp/mysql.sock Using server version 5.7.24-27-log innobackupex version 2.4.12 based on MySQL server 5.7.19 Linux (x86_64) (revision id: 170eb8c) xtrabackup: uses posix_fadvise(). xtrabackup: cd to /data/mysql_data xtrabackup: open files limit requested 10000, set to 655350 xtrabackup: using the following InnoDB configuration: xtrabackup: innodb_data_home_dir = /data/mysql_data xtrabackup: innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend xtrabackup: innodb_log_group_home_dir = /data/mysql_data xtrabackup: innodb_log_files_in_group = 3 xtrabackup: innodb_log_file_size = 268435456 xtrabackup: using O_DIRECT InnoDB: Number of pools: 1 190809 19:38:37 >> log scanned up to (3033736244) InnoDB: Opened 3 undo tablespaces InnoDB: 0 undo tablespaces made active xtrabackup: Generating a list of tablespaces InnoDB: Allocated tablespace ID 22 for mysql/server_cost, old maximum was 3 190809 19:38:37 [01] Copying /data/mysql_data/ibdata1 to /opt/2019-08-09_19-38-37/ibdata1 190809 19:38:38 >> log scanned up to (3033736244) ... 190809 19:39:21 Finished backing up non-InnoDB tables and files 190809 19:39:21 Executing LOCK BINLOG FOR BACKUP... 190809 19:39:21 [00] Writing /opt/2019-08-09_19-38-37/xtrabackup_binlog_info 190809 19:39:21 [00] ...done 190809 19:39:21 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS... xtrabackup: The latest check point (for incremental): '3033736235' xtrabackup: Stopping log copying thread. .190809 19:39:21 >> log scanned up to (3033736276) 190809 19:39:21 Executing UNLOCK BINLOG 190809 19:39:21 Executing UNLOCK TABLES 190809 19:39:21 All tables unlocked 190809 19:39:21 [00] Copying ib_buffer_pool to /opt/2019-08-09_19-38-37/ib_buffer_pool 190809 19:39:21 [00] ...done 190809 19:39:21 Backup created in directory '/opt/2019-08-09_19-38-37/' MySQL binlog position: filename 'mysql-bin.000004', position '660' 190809 19:39:21 [00] Writing /opt/2019-08-09_19-38-37/backup-my.cnf 190809 19:39:21 [00] ...done 190809 19:39:21 [00] Writing /opt/2019-08-09_19-38-37/xtrabackup_info 190809 19:39:21 [00] ...done xtrabackup: Transaction log of lsn (3033736235) to (3033736276) was copied. 190809 19:39:21 completed OK! 2.预处理，进行事物检查(最好直接在主库中备份完成后检查) # innobackupex --defaults-file="/etc/my.cnf" --user=root -p'pass' --socket=/tmp/mysql.sock --apply-log --use-memory=2G /opt/2019-08-09_19-38-37/ xtrabackup: recognized server arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=strict_crc32 --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_files_in_group=3 --innodb_log_file_size=268435456 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --server-id=51 --redo-log-version=1 xtrabackup: recognized client arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=strict_crc32 --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_files_in_group=3 --innodb_log_file_size=268435456 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --server-id=51 --redo-log-version=1 190809 19:41:38 innobackupex: Starting the apply-log operation IMPORTANT: Please check that the apply-log run completes successfully. At the end of a successful apply-log run innobackupex prints "completed OK!". innobackupex version 2.4.12 based on MySQL server 5.7.19 Linux (x86_64) (revision id: 170eb8c) xtrabackup: cd to /opt/2019-08-09_19-38-37/ xtrabackup: This target seems to be not prepared yet. InnoDB: Number of pools: 1 xtrabackup: xtrabackup_logfile detected: size=8388608, start_lsn=(3033736235) xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend xtrabackup: innodb_log_group_home_dir = . xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 8388608 xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend xtrabackup: innodb_log_group_home_dir = . xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 8388608 xtrabackup: Starting InnoDB instance for recovery. xtrabackup: Using 2147483648 bytes for buffer pool (set by --use-memory parameter) InnoDB: PUNCH HOLE support available xtrabackup: starting shutdown with innodb_fast_shutdown = 1 InnoDB: FTS optimize thread exiting. InnoDB: Starting shutdown... InnoDB: Shutdown completed; log sequence number 3033736295 InnoDB: Number of pools: 1 xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend xtrabackup: innodb_log_group_home_dir = . xtrabackup: innodb_log_files_in_group = 3 xtrabackup: innodb_log_file_size = 268435456 InnoDB: PUNCH HOLE support available InnoDB: Mutexes and rw_locks use GCC atomic builtins InnoDB: Uses event mutexes InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier ... InnoDB: FTS optimize thread exiting. InnoDB: Starting shutdown... InnoDB: Shutdown completed; log sequence number 3033736744 190809 19:41:50 completed OK! 3.将备份出来的数据库scp拷贝到从库 # scp -P 2019 -r 2019-08-09_19-38-37 172.30.0.52:/opt 4.关闭从库，清理从库数据，恢复数据到从库 /etc/init.d/mysqld stop 删除从库的数据和日志信息 rm -rf /data/mysql_data/* 在从库上执行(将数据恢复到数据库中) # innobackupex --defaults-file="/etc/my.cnf" --user=root --socket=/tmp/mysql.sock --copy-back /opt/2019-08-09_19-38-37/ xtrabackup: recognized server arguments: --datadir=/data/mysql_data --tmpdir=/tmp --open_files_limit=10000 --log_bin=mysql-bin --server-id=52 --innodb_data_home_dir=/data/mysql_data --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_group_home_dir=/data/mysql_data --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --innodb_buffer_pool_size=3G --innodb_log_file_size=256M --innodb_log_buffer_size=64M --innodb_log_files_in_group=3 --innodb_flush_log_at_trx_commit=1 --innodb_file_per_table=1 --innodb_read_io_threads=8 --innodb_write_io_threads=8 --innodb_max_dirty_pages_pct=75 --innodb_flush_method=O_DIRECT --innodb_autoextend_increment=32 xtrabackup: recognized client arguments: --datadir=/data/mysql_data --tmpdir=/tmp --open_files_limit=10000 --log_bin=mysql-bin --server-id=52 --innodb_data_home_dir=/data/mysql_data --innodb_data_file_path=ibdata1:1G;ibdata2:1G:autoextend --innodb_log_group_home_dir=/data/mysql_data --innodb_undo_directory=/data/mysql_data/undolog/ --innodb_undo_tablespaces=3 --innodb_buffer_pool_size=3G --innodb_log_file_size=256M --innodb_log_buffer_size=64M --innodb_log_files_in_group=3 --innodb_flush_log_at_trx_commit=1 --innodb_file_per_table=1 --innodb_read_io_threads=8 --innodb_write_io_threads=8 --innodb_max_dirty_pages_pct=75 --innodb_flush_method=O_DIRECT --innodb_autoextend_increment=32 190809 19:52:10 innobackupex: Starting the copy-back operation IMPORTANT: Please check that the copy-back run completes successfully. At the end of a successful copy-back run innobackupex prints "completed OK!". innobackupex version 2.4.12 based on MySQL server 5.7.19 Linux (x86_64) (revision id: 170eb8c) 190809 19:52:10 [01] Copying undo001 to /data/mysql_data/undolog/undo001 190809 19:52:10 [01] ...done 190809 19:52:10 [01] Copying undo002 to /data/mysql_data/undolog/undo002 190809 19:52:10 [01] ...done 190809 19:52:10 [01] Copying undo003 to /data/mysql_data/undolog/undo003 190809 19:52:10 [01] ...done 190809 19:52:10 [01] Copying ib_logfile0 to /data/mysql_data/ib_logfile0 190809 19:52:10 [01] ...done 190809 19:52:11 [01] Copying ib_logfile1 to /data/mysql_data/ib_logfile1 190809 19:52:11 [01] ...done 190809 19:52:12 [01] Copying ib_logfile2 to /data/mysql_data/ib_logfile2 ... 190809 19:52:27 [01] Copying ./xtrabackup_binlog_pos_innodb to /data/mysql_data/xtrabackup_binlog_pos_innodb 190809 19:52:27 [01] ...done 190809 19:52:27 completed OK! 5.修改权限，启动从库 # chown -R mysql.mysql /data/mysql_data/ 查看主库中master位置，方便后面配置主从同步点 # cat /opt/2019-08-09_19-38-37/xtrabackup_binlog_info mysql-bin.000004 660 6.主库中创建建salve同步用户 grant replication slave,reload,super on *.* to rep@172.30.0.52 identified by 'wsdb123'; FLUSH PRIVILEGES; 7.从库执行同步 mysql> change master to master_host='f_crack_check.prod.mysql.eus',master_user='rep',master_password='wsdb123',master_log_file='mysql-bin.000004',master_log_pos=660; mysql> start slave; mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: f_crack_check.prod.mysql.eus Master_User: rep Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000004 Read_Master_Log_Pos: 1119 Relay_Log_File: mysql-relay-bin.000002 Relay_Log_Pos: 779 Relay_Master_Log_File: mysql-bin.000004 Slave_IO_Running: Yes # 关键项，都为yes表示配置主从同步成功 Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: information_schema,performance_schema,undolog,for_nagios,undolog,information_schema,performance_schema,undolog,for_nagios,undolog Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: information_schema.%,performance_schema.%,undolog.%,for_nagios.%,undolog.%,information_schema.%,performance_schema.%,undolog.%,for_nagios.%,undolog.% Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 1119 Relay_Log_Space: 986 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 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: 51 Master_UUID: b7215ccd-b9b8-11e9-885d-00163e0073ee Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: b7215ccd-b9b8-11e9-885d-00163e0073ee:1-774 Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) pass ### rep from master 172.30.0.51 f_crack_check.prod.mysql.eus # 主从服务器配置： 阿里云服务器，计算型网络增强型 8核16G内存 40G系统盘 SSD 400G数据盘 master主节点的my.cnf配置: [master]# cat /etc/my.cnf # Example MySQL config file for medium systems. # 8核 16G # This is for a system with little memory (16G) where MySQL plays [client] #password = your_password port = 3306 socket = /tmp/mysql.sock # The MySQL server [mysqld] user = mysql port = 3306 bind-address = 0.0.0.0 socket = /tmp/mysql.sock datadir = /data/mysql_data pid-file = /data/mysql_data/mysql.pid basedir = /usr/local/mysql tmpdir = /tmp #此开关默认为NULL，即不允许导入导出。 #secure-file-priv = /opt/upload #-------------------------------gobal variables------------------------# #默认关闭，涉及到timestamp类型的列自动更新的问题 explicit_defaults_for_timestamp = 1 ###transaction_write_set_extraction = XXHASH64 #以便在server收集写集合的同时将其记录到二进制日志。并且是行更改后的唯一标识此标识将用于检测冲突。 ###loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212889f856' #组的名字可以随便起,但不能用主机的GTID ###loose-group_replication_start_on_boot = off #为了避免每次启动自动引导具有相同名称的第二个组,所以设置为OFF。 ###loose-group_replication_bootstrap_group = off #同上 ###loose-group_replication_local_address = '192.168.1.88:33071' #写自己主机所在IP ###loose-group_replication_group_seeds ='192.168.1.88:33071,192.168.1.89:33071,192.168.1.90:33071' ###loose-group_replication_single_primary_mode = off #关闭单主模式的参数 ###loose-group_replication_enforce_update_everywhere_checks = on #开启多主模式的参数 skip-external-locking skip-name-resolve skip-ssl #memory is 16G key_buffer_size = 32M table_open_cache = 2048 table_definition_cache = 1024 sort_buffer_size = 4M net_buffer_length = 32K read_buffer_size = 4M read_rnd_buffer_size = 16M open_files_limit = 10000 thread_cache_size = 400 query_cache_type = 0 query_cache_size = 32M max_write_lock_count = 300 wait_timeout = 120 interactive_timeout = 120 net_read_timeout = 120 net_write_timeout = 120 max_connections = 800 max_user_connections = 750 max_connect_errors = 10000 max_allowed_packet = 512M back_log = 2048 log_timestamps = system performance_schema = OFF character_set_server = utf8mb4 ##当链接数耗尽后，通过设置别用端口，让root可以登录 extra_max_connections = 2 extra_port = 13306 ###让mysql不区分大小写敏感 lower_case_table_names = 1 #explicit_defaults_for_timestamp = 1 #----------------Myisam--------------------------------# myisam_recover_options = DEFAULT bulk_insert_buffer_size = 64M myisam_sort_buffer_size = 128M myisam_max_sort_file_size = 512M myisam_repair_threads = 1 #if the query is exec time great than 2 seconds, the query will log to slow log if slowlog is enabled. long_query_time = 1 slow_query_log = On slow-query-log-file = /data/mysql_data/slow.log show_compatibility_56 = on # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # #skip-networking #----------------------------MySQL Log----------------# # Replication Master Server (default) # binary logging is required for replication log-bin = mysql-bin expire_logs_days = 20 log_error = error.log log_error_verbosity = 1 log_warnings = 1 # binary logging format - mixed recommended binlog_format = row relay-log = mysql-relay-bin relay-log-index = relay.index # required unique id between 1 and 2^32 - 1 server-id = 51 # 关键配置，主从配置server-id不能重复 #sql-mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" #sql-mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" sync_binlog = 1 log_slave_updates = 1 #binlog_checksum = NONE #------------------------------replicate--------------# #排除不需要同步的库表 #replicate-ignore-db = mysql #replicate-ignore-db = sys replicate-ignore-db = information_schema replicate-ignore-db = performance_schema replicate-ignore-db = undolog replicate-ignore-db = for_nagios replicate-ignore-db = undolog #replicate_wild_ignore_table = mysql.% #replicate_wild_ignore_table = sys.% replicate_wild_ignore_table = information_schema.% replicate_wild_ignore_table = performance_schema.% replicate_wild_ignore_table = undolog.% replicate_wild_ignore_table = for_nagios.% replicate_wild_ignore_table = undolog.% #主主复制需要开启 #auto_increment_offset= 2 #auto_increment_increment= 2 #GTID模式复制，需要开启如下 #gtid_mode = ON #enforce_gtid_consistency = ON #并发复制 slave-parallel-type = LOGICAL_CLOCK slave-parallel-workers = 2 master_info_repository = TABLE relay_log_info_repository = TABLE relay_log_recovery = ON #跳过slave进程启动参数 skip-slave-start #如果实例为从库，则需要设置为on #read_only = on #skip-grant-tables #--------------------------------------------------------innoDB------------# innodb_rollback_on_timeout # Uncomment the following if you are using InnoDB tables innodb_data_home_dir = /data/mysql_data innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend innodb_log_group_home_dir = /data/mysql_data innodb_undo_directory = /data/mysql_data/undolog/ innodb_undo_logs = 128 innodb_undo_tablespaces = 3 # You can set .._buffer_pool_size up to 50 - 80 % #innodb_use_sys_malloc = 0 #innodb_page_size = 8192 innodb_buffer_pool_size = 3G innodb_buffer_pool_instances = 1 #innodb_additional_mem_pool_size = 8M # Set .._log_file_size to 25 % of buffer pool size innodb_log_file_size = 256M innodb_log_buffer_size = 64M innodb_log_files_in_group = 3 #每次事务提交时MySQL都会把log buffer的数据写入log file，并且flush(刷到磁盘)中去，该模式为系统默认 innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 120 #启用独立表空间 innodb_file_per_table = 1 #CPU是1颗8核的，那么可以设置 innodb_read_io_threads = 8 innodb_write_io_threads = 8 #默认是0，则表示没有并发线程数限制，所有请求都会直接请求线程执行，当并发用户线程数量小于64，建议设置innodb_thread_concurrency=0，在大多数情况下，最佳的值是小于并接近虚拟CPU的个数 innodb_thread_concurrency = 12 innodb_max_dirty_pages_pct = 75 innodb_flush_method = O_DIRECT innodb_purge_threads = 10 innodb_large_prefix = 1 #参数待测试 #innodb_io_capacity = 20000 #innodb_io_capacity_max = 40000 #根据CPU核心数来设定 thread_pool_size = 8 #thread_handling = pool-of-threads thread_pool_oversubscribe = 24 #thread_handling = pool-of-threads thread_pool_stall_limit = 100 thread_pool_max_threads = 30 #解释： 在启动时把热数据加载到内存。 innodb_buffer_pool_load_at_startup = 1 #解释： 在关闭时把热数据dump到本地磁盘 innodb_buffer_pool_dump_at_shutdown = 1 ##默认是8M, 如果一次insert数据量比较多的话, 可以适当增加 innodb_autoextend_increment = 32 [mysqldump] quick max_allowed_packet = 512M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [myisamchk] #key_buffer_size = 20M #sort_buffer_size = 20M key_buffer_size = 200M sort_buffer_size = 200M read_buffer = 2M write_buffer = 2M [mysqld_safe] #控制文件打开数的show global status like 'open%file%';比较合适的设置：Open_files / open_files_limit * 100% <= 75% open-files-limit = 65535 log-error = /data/mysql_data/error.log [mysqlhotcopy] interactive-timeout slave从库my.cnf配置 [slave]# cat /etc/my.cnf # Example MySQL config file for medium systems. # 8核 16G # This is for a system with little memory (16G) where MySQL plays [client] #password = your_password port = 3306 socket = /tmp/mysql.sock # The MySQL server [mysqld] user = mysql port = 3306 bind-address = 0.0.0.0 socket = /tmp/mysql.sock datadir = /data/mysql_data pid-file = /data/mysql_data/mysql.pid basedir = /usr/local/mysql tmpdir = /tmp #此开关默认为NULL，即不允许导入导出。 #secure-file-priv = /opt/upload #-------------------------------gobal variables------------------------# #默认关闭，涉及到timestamp类型的列自动更新的问题 explicit_defaults_for_timestamp = 1 ###transaction_write_set_extraction = XXHASH64 #以便在server收集写集合的同时将其记录到二进制日志。并且是行更改后的唯一标识此标识将用于检测冲突。 ###loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212889f856' #组的名字可以随便起,但不能用主机的GTID ###loose-group_replication_start_on_boot = off #为了避免每次启动自动引导具有相同名称的第二个组,所以设置为OFF。 ###loose-group_replication_bootstrap_group = off #同上 ###loose-group_replication_local_address = '192.168.1.88:33071' #写自己主机所在IP ###loose-group_replication_group_seeds ='192.168.1.88:33071,192.168.1.89:33071,192.168.1.90:33071' ###loose-group_replication_single_primary_mode = off #关闭单主模式的参数 ###loose-group_replication_enforce_update_everywhere_checks = on #开启多主模式的参数 skip-external-locking skip-name-resolve skip-ssl #memory is 16G key_buffer_size = 32M table_open_cache = 2048 table_definition_cache = 1024 sort_buffer_size = 4M net_buffer_length = 32K read_buffer_size = 4M read_rnd_buffer_size = 16M open_files_limit = 10000 thread_cache_size = 400 query_cache_type = 0 query_cache_size = 32M max_write_lock_count = 300 wait_timeout = 120 interactive_timeout = 120 net_read_timeout = 120 net_write_timeout = 120 max_connections = 800 max_user_connections = 750 max_connect_errors = 10000 max_allowed_packet = 512M back_log = 2048 log_timestamps = system performance_schema = OFF character_set_server = utf8mb4 ##当链接数耗尽后，通过设置别用端口，让root可以登录 extra_max_connections = 2 extra_port = 13306 ###让mysql不区分大小写敏感 lower_case_table_names = 1 #explicit_defaults_for_timestamp = 1 #----------------Myisam--------------------------------# myisam_recover_options = DEFAULT bulk_insert_buffer_size = 64M myisam_sort_buffer_size = 128M myisam_max_sort_file_size = 512M myisam_repair_threads = 1 #if the query is exec time great than 2 seconds, the query will log to slow log if slowlog is enabled. long_query_time = 1 slow_query_log = On slow-query-log-file = /data/mysql_data/slow.log show_compatibility_56 = on # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # #skip-networking #----------------------------MySQL Log----------------# # Replication Master Server (default) # binary logging is required for replication log-bin = mysql-bin expire_logs_days = 20 log_error = error.log log_error_verbosity = 1 log_warnings = 1 # binary logging format - mixed recommended binlog_format = row relay-log = mysql-relay-bin relay-log-index = relay.index # required unique id between 1 and 2^32 - 1 server-id = 52 #sql-mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" #sql-mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" sync_binlog = 1 log_slave_updates = 1 #binlog_checksum = NONE #------------------------------replicate--------------# #排除不需要同步的库表 #replicate-ignore-db = mysql #replicate-ignore-db = sys replicate-ignore-db = information_schema replicate-ignore-db = performance_schema replicate-ignore-db = undolog replicate-ignore-db = for_nagios replicate-ignore-db = undolog #replicate_wild_ignore_table = mysql.% #replicate_wild_ignore_table = sys.% replicate_wild_ignore_table = information_schema.% replicate_wild_ignore_table = performance_schema.% replicate_wild_ignore_table = undolog.% replicate_wild_ignore_table = for_nagios.% replicate_wild_ignore_table = undolog.% #主主复制需要开启 #auto_increment_offset= 2 #auto_increment_increment= 2 #GTID模式复制，需要开启如下 #gtid_mode = ON #enforce_gtid_consistency = ON #并发复制 slave-parallel-type = LOGICAL_CLOCK slave-parallel-workers = 2 master_info_repository = TABLE relay_log_info_repository = TABLE relay_log_recovery = ON #跳过slave进程启动参数 skip-slave-start #如果实例为从库，则需要设置为on read_only = on #skip-grant-tables #--------------------------------------------------------innoDB------------# innodb_rollback_on_timeout # Uncomment the following if you are using InnoDB tables innodb_data_home_dir = /data/mysql_data innodb_data_file_path = ibdata1:1G;ibdata2:1G:autoextend innodb_log_group_home_dir = /data/mysql_data innodb_undo_directory = /data/mysql_data/undolog/ innodb_undo_logs = 128 innodb_undo_tablespaces = 3 # You can set .._buffer_pool_size up to 50 - 80 % #innodb_use_sys_malloc = 0 #innodb_page_size = 8192 innodb_buffer_pool_size = 3G innodb_buffer_pool_instances = 1 #innodb_additional_mem_pool_size = 8M # Set .._log_file_size to 25 % of buffer pool size innodb_log_file_size = 256M innodb_log_buffer_size = 64M innodb_log_files_in_group = 3 #每次事务提交时MySQL都会把log buffer的数据写入log file，并且flush(刷到磁盘)中去，该模式为系统默认 innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 120 #启用独立表空间 innodb_file_per_table = 1 #CPU是1颗8核的，那么可以设置 innodb_read_io_threads = 8 innodb_write_io_threads = 8 #默认是0，则表示没有并发线程数限制，所有请求都会直接请求线程执行，当并发用户线程数量小于64，建议设置innodb_thread_concurrency=0，在大多数情况下，最佳的值是小于并接近虚拟CPU的个数 innodb_thread_concurrency = 12 innodb_max_dirty_pages_pct = 75 innodb_flush_method = O_DIRECT innodb_purge_threads = 10 innodb_large_prefix = 1 #参数待测试 #innodb_io_capacity = 20000 #innodb_io_capacity_max = 40000 #根据CPU核心数来设定 thread_pool_size = 8 #thread_handling = pool-of-threads thread_pool_oversubscribe = 24 #thread_handling = pool-of-threads thread_pool_stall_limit = 100 thread_pool_max_threads = 30 #解释： 在启动时把热数据加载到内存。 innodb_buffer_pool_load_at_startup = 1 #解释： 在关闭时把热数据dump到本地磁盘 innodb_buffer_pool_dump_at_shutdown = 1 ##默认是8M, 如果一次insert数据量比较多的话, 可以适当增加 innodb_autoextend_increment = 32 [mysqldump] quick max_allowed_packet = 512M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [myisamchk] #key_buffer_size = 20M #sort_buffer_size = 20M key_buffer_size = 200M sort_buffer_size = 200M read_buffer = 2M write_buffer = 2M [mysqld_safe] #控制文件打开数的show global status like 'open%file%';比较合适的设置：Open_files / open_files_limit * 100% <= 75% open-files-limit = 65535 log-error = /data/mysql_data/error.log [mysqlhotcopy] interactive-timeout 备份计划： 1.备份脚本的目录结构 [/usr/local/worksh]# tree xtrabackup_cron/ xtrabackup_cron/ ├── bin │ └── mysql_increment_hot_backup.sh ├── conf │ └── mysql_increment_hot_backup.conf ├── log └── var 备份脚本 [/usr/local/worksh]# cat /usr/local/worksh/xtrabackup_cron/bin/mysql_increment_hot_backup.sh #!/usr/bin/env bash # Program: MySQL 增量备份脚本 使用 percona xtrabackup ##进入程序目录 cd /usr/local/worksh/xtrabackup_cron/bin # 读取配置文件中的所有变量值, 设置为全局变量 # 配置文件 conf_file="../conf/mysql_increment_hot_backup.conf" # mysql 用户 user=`sed '/^user=/!d;s/.*=//' $conf_file` # mysql 密码 #password=`sed '/^password=/!d;s/.*=//' $conf_file` password="xtrabackup**123" # mysql 备份目录 backup_dir=`sed '/^backup_dir=/!d;s/.*=//' $conf_file` # percona-xtrabackup 备份软件路径 xtrabackup_dir=`sed '/^xtrabackup_dir=/!d;s/.*=//' $conf_file` # 全备是在一周的第几天 full_backup_week_day=`sed '/^full_backup_week_day=/!d;s/.*=//' $conf_file` # mysql 全备前缀标识 full_backup_prefix=`sed '/^full_backup_prefix=/!d;s/.*=//' $conf_file` # mysql 增量备前缀标识 increment_prefix=`sed '/^increment_prefix=/!d;s/.*=//' $conf_file` # mysql 配置文件 mysql_conf_file=`sed '/^mysql_conf_file=/!d;s/.*=//' $conf_file` # 备份错误日志文件 error_log=`sed '/^error_log=/!d;s/.*=//' $conf_file` # 备份索引文件 index_file=`sed '/^index_file=/!d;s/.*=//' $conf_file` # 备份日期 backup_date=`date +%F` # 备份日期 backup_time=`date +%H-%M-%S` # 备份日期 backup_week_day=`date +%u` # 设置备份线程数 backup_thread=4 # 创建相关目录 log_dir=../log var_dir=../var mkdir -p $backup_dir mkdir -p $log_dir mkdir -p $var_dir # 全量备份 function full_backup() { backup_folder=${full_backup_prefix}_${backup_date}_${backup_time}_${backup_week_day} mkdir -p $backup_dir/$backup_folder $xtrabackup_dir/bin/innobackupex --defaults-file=$mysql_conf_file --user=$user --password=$password --parallel=$backup_thread --no-timestamp $backup_dir/$backup_folder > $log_dir/${backup_folder}.log 2>&1 return $? } # 增量备份 function increment_backup() { backup_folder=${increment_prefix}_${backup_date}_${backup_time}_${backup_week_day} incr_base_folder=`sed -n '$p' $index_file | awk -F '[, {}]*' '{print $3}' | awk -F ':' '{print $2}'` mkdir -p $backup_dir/$backup_folder $xtrabackup_dir/bin/innobackupex --defaults-file=$mysql_conf_file --user=$user --password=$password --no-timestamp --incremental $backup_dir/$backup_folder --incremental-basedir=$backup_dir/$incr_base_folder > $log_dir/${backup_folder}.log 2>&1 return $? } # 删除之前的备份(一般在全备完成后使用) function delete_before_backup() { cat $index_file | awk -F '[, {}]*' '{print $3}' | awk -v backup_dir=$backup_dir -F ':' '{if($2!=""){printf("rm -rf %s/%s ", backup_dir, $2)}}' | /bin/bash cat $index_file | awk -F '[, {}]*' '{print $3}' | awk -v log_dir=$log_dir -F ':' '{if($2!=""){printf("rm -rf %s/%s.log ", log_dir, $2)}}' | /bin/bash } # 备份索引文件 function backup_index_file() { cp $index_file ${index_file}_$(date -d "1 day ago" +%F) } # 备份索引文件 function send_index_file_to_remote() { echo 'send index file ok' } # 添加索引, 索引记录了当前最新的备份 function append_index_to_file() { echo "{week_day:$backup_week_day, dir:${1}_${backup_date}_${backup_time}_${backup_week_day}, type:${1}, date:${backup_date}}" >> $index_file } # 记录 错误消息到文件 function logging_backup_err() { echo "{week_day:$backup_week_day, dir:${1}_${backup_date}_${backup_time}_${backup_week_day}, type:${1}, date:${backup_date}}" >> $error_log } # 清空索引 function purge_index_from_file() { > $index_file } # 清空错误日志信息 function purge_err_log() { > $error_log } # 打包备份 function tar_backup_file() { echo "tar $1 ok" } # 发送备份到远程 function send_backup_to_remote() { echo "send $1 remote ok" } # 判断是应该全备还是增量备份 # 0:full, 1:incr function get_backup_type() { full_backup_week_day=`sed '/^full_backup_week_day=/!d;s/.*=//' $conf_file` backup_type=0 if [ "$full_backup_week_day" -eq `date +%u` ]; then backup_type=0 else backup_type=1 fi if [ ! -n "`cat $index_file`" ]; then backup_type=0 fi return $backup_type } # 测试配置文件正确性 function test_conf_file() { # 判断每个变量是否在配置文件中有配置，没有则退出程序 if [ ! -n "$user" ]; then echo 'fail: configure file user not set'; exit 2; fi if [ ! -n "$password" ]; then echo 'fail: configure file password not set'; exit 2; fi if [ ! -n "$backup_dir" ]; then echo 'fail: configure file backup_dir not set'; exit 2; fi if [ ! -n "$full_backup_week_day" ]; then echo 'fail: configure file full_backup_week_day not set'; exit 2; fi if [ ! -n "$full_backup_prefix" ]; then echo 'fail: configure file full_backup_prefix not set'; exit 2; fi if [ ! -n "$increment_prefix" ]; then echo 'fail: configure file increment_prefix not set'; exit 2; fi if [ ! -n "$mysql_conf_file" ]; then echo 'fail: configure file mysql_conf_file not set'; exit 2; fi if [ ! -n "$error_log" ]; then echo 'fail: configure file error_log not set'; exit 2; fi if [ ! -n "$index_file" ]; then echo 'fail: configure file index_file not set'; exit 2; fi } # 执行 function run() { # 检测配置文件值 test_conf_file # 判断是执行全备还是曾量备份 get_backup_type backup_type=$? case $backup_type in 0 ) # 全量备份 full_backup backup_ok=$? if [ 0 -eq "$backup_ok" ]; then # 全备成功 # # 打包最新备份 # tar_backup_file $full_backup_prefix # # 将tar备份发送到远程 # send_backup_to_remote $full_backup_prefix # 备份索引文件 backup_index_file # # 发送索引文件到远程 # send_index_file_to_remote # 清除之前的备份 delete_before_backup # 清除索引文件 purge_index_from_file # 添加索引, 索引记录了当前最新的备份 append_index_to_file $full_backup_prefix else # 全备失败 # 删除备份目录 rm -rf ${backup_dir}/${full_backup_prefix}_${backup_date}_${backup_time}_${backup_week_day} # 记录错误日志 logging_backup_err $full_backup_prefix fi ;; 1 ) # 增量备份 increment_backup backup_ok=$? if [ 0 -eq "$backup_ok" ]; then # 增量备份成功 # # 打包最新备份 # tar_backup_file $increment_prefix # # 将tar备份发送到远程 # send_backup_to_remote $increment_prefix # 添加索引, 索引记录了当前最新的备份 append_index_to_file $increment_prefix else # 增量备份失败 # 删除备份目录 rm -rf ${backup_dir}/${full_backup_prefix}_${backup_date}_${backup_time}_${backup_week_day} # 记录错误日志 logging_backup_err $increment_prefix fi ;; esac } run chown -R apache.users /data/MySQL_Data_Backup 配置文件 # cat /usr/local/worksh/xtrabackup_cron/conf/mysql_increment_hot_backup.conf # 备份专用用户 # GRANT RELOAD, PROCESS, SUPER, LOCK TABLES, REPLICATION CLIENT, CREATE TABLESPACE ON *.* TO 'xtrabackup'@'localhost' identified by 'xtrabackuppass'; # flush privileges; # mysql 用户名 user=xtrabackup # mysql 密码 password="xtrabackuppass" # 备份存放路径 backup_dir=/data/MySQL_Data_Backup # percona-xtrabackup 备份软件路径 xtrabackup_dir=/usr # 全备是在一周的第几天 full_backup_week_day=4 # 全量备信息名称 前缀 full_backup_prefix=full # 增量备信息名称 前缀 increment_prefix=incr # mysql配置文件 mysql_conf_file=/etc/my.cnf # 错误日志文件(更具此文件知道备份是否成功) # format: # {week_day:1,dir:full/incr_2015-12-29_00-00-00_7,type:full/incr,date:2015-12-30} error_log=../var/mysql_increment_hot_backup.err # 索引文件 # format: # {week_day:1,dir:full/incr_2015-12-29_00-00-00_7,type:full/incr} index_file=../var/mysql_increment_hot_backup.index 2.添加计划任务crontab -e ########mysql backup 每周4进行全备份，每天定时增量备份，保留一周 03 01 * * * /usr/local/worksh/xtrabackup_cron/bin/mysql_increment_hot_backup.sh