Mysql怎么备份一个my.cnf配置文件

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本篇内容主要讲解“Mysql 怎么备份一个 my.cnf 配置文件”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让丸趣 TV 小编来带大家学习“Mysql 怎么备份一个 my.cnf 配置文件”吧!

记录一个 my.cnf 吧以免不时之需

[client]
port = 3307
socket = /home/data/mydata/3307/mysql.sock

[mysqld]
port = 3307
socket = /home/data/mydata/3307/mysql.sock

basedir = /home/data/mysql
datadir = /home/data/mydata/3307
pid-file = /home/data/mydata/3307/mysql.pid
server-id = 0013307

skip-name-resolve
back_log = 600
ft_min_word_len = 1
max_connections = 8096
max_connect_errors = 99999999
#open_files_limit = 65535
table_open_cache = 2048
max_allowed_packet = 128M
binlog_cache_size = 8M
max_heap_table_size = 128M
tmp_table_size = 128M
read_buffer_size = 16M
read_rnd_buffer_size = 32M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 128M
thread_cache_size = 8
query_cache_size = 0
query_cache_limit = 2M

table_open_cache_instances = 128

innodb_online_alter_log_max_size=1G

innodb_io_capacity=2000

log-bin = mysql-bin
binlog_format = ROW
replicate-wild-do-table=test.%
replicate-wild-do-table=mysql.%
replicate-wild-do-table= information_schema.%
replicate-wild-do-table=interface_hd_com.%
replicate-wild-ignore-table=test2.%
replicate-wild-ignore-table= performance_schema.%
log_slave_updates
relay-log=mysql-relay-bin
skip_slave_start

gtid_mode=ON
enforce-gtid-consistency
report-host=192.168.1.157
report-port=3307
master-info-repository=TABLE
relay-log-info-repository=TABLE
#sync-master-info = 1

expire_logs_days = 3
log_error = /home/data/mydata/3307/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /home/data/mydata/3307/mysql-slow.log
performance_schema = 0
skip-external-locking

default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_open_files = 1500
innodb_buffer_pool_size = 10240M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120

#innodb_undo_tablespaces = 16
#innodb_undo_directory = /home/data/mydata/3307/undo

bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 8M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1

interactive_timeout = 28800
wait_timeout = 28800

[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

备注：关于 replicate-wild-do-table

1 如果同时使用 replicate-wild-do-table replicate-wild-ignore-table

replicate-wild-do-table=test.%
replicate-wild-ignore-table=test2.%
那么：主库上的只有 test 的操作会同步至从库，test2 和其它的库都不会同步，新建 db 也不会同步

2. 只有 replicate-wild-ignore-table

replicate-wild-ignore-table= liuliang.%
那么：主库上只有 liuliang 库的操作不同步，其它的都同步，并且新建库也会同步！

3. 只有 replicate-wild-do-table

replicate-wild-do-table=oauth.%
那么：主库上只有 oauth 的操作才同步，其它的都不同步，新建的 db 也不会同步 === 等同于第一种模式！

再备份一个

[client]
port = 3306
socket = /data/3306/mysql.sock
default-character-set=utf8mb4

[mysql]
no-auto-rehash
default-character-set=utf8mb4

[mysqld]
init-connect= SET NAMES utf8mb4
character-set-server = utf8mb4
skip-character-set-client-handshake
lower_case_table_names = 1
federated
secure_file_priv=

server-id=139
port = 3306
socket = /data/3306/mysql.sock
basedir = /usr/local/mysql
datadir = /data/3306/data
transaction_isolation = REPEATABLE-READ
log-error = /data/3306/error.log
slow_query_log_file=/data/3306/slow-log.log

slow_query_log = 1
pid-file = /data/3306/mysql.pid
log-bin = /data/3306/binlog/mysql-bin
binlog_format=ROW
slave-skip-errors = 1032,1062

skip-external-locking
skip-name-resolve
default-storage-engine = INNODB
wait_timeout=200
connect_timeout = 20
interactive_timeout=200
back_log = 500
event_scheduler = ON – 开启 event 事件支持
long_query_time = 1
max_binlog_size = 256M
binlog_cache_size = 8M
expire_logs_days = 7
relay_log_purge = 0 —-relay lof 自动清除关闭，开启后可通过 flush logs 手动清除
relay_log_recovery = 1
skip-slave-start = 1
log_slave_updates = 1
max_connections = 3000
table_open_cache = 6144
table_definition_cache = 4096
sort_buffer_size = 512K
read_buffer_size = 512K
read_rnd_buffer_size = 512K
tmp_table_size = 64M – 内存临时表的最大值
max_heap_table_size = 64M
bulk_insert_buffer_size = 32M — 批量插入暂存使用内存
thread_cache_size = 8M
thread_stack = 256K
max_allowed_packet = 500M

join_buffer_size = 4M
innodb_buffer_pool_size = 20G
innodb_buffer_pool_instances = 4
innodb_additional_mem_pool_size = 16M
innodb_log_file_size = 1024M
innodb_log_buffer_size = 64M
innodb_log_files_in_group = 3
innodb_flush_log_at_trx_commit = 1
innodb_sync_spin_loops = 40 – 上下文切换自旋锁
innodb_max_dirty_pages_pct = 90
innodb_support_xa = 1
innodb_thread_concurrency = 0
innodb_thread_sleep_delay = 500
innodb_file_io_threads = 4
innodb_lock_wait_timeout = 200
innodb_concurrency_tickets = 1000
log_bin_trust_function_creators = 1
innodb_flush_method = O_DIRECT
innodb_file_per_table = 1
innodb_read_io_threads = 8
innodb_write_io_threads = 8
innodb_io_capacity = 1500
innodb_file_format = Barracuda
innodb_purge_threads = 4
innodb_purge_batch_size = 32
innodb_old_blocks_pct=75
innodb_change_buffering = all
group_concat_max_len=102400
loose_max_statement_time=600000
innodb_print_all_deadlocks = 1