Tolan/生产环境配置/my.cnf

[mysqld]
# ===== 基础设置 =====
datadir = /data/mysql/data/mysql
socket = /data/mysql/data/mysql/mysql.sock
port = 13306
user = root

# ===== 日志设置 =====
log-error = /data/mysql/log/mysqld.log
pid-file = /var/run/mysqld/mysqld.pid

# 关闭慢查询日志以减少IO和内存开销
slow_query_log = 0

# ===== 连接和线程设置 =====
# 连接池设置（4G内存优化）
max_connections = 800
max_connect_errors = 10000
back_log = 500

# 线程缓存（增加连接数后相应调整）
thread_cache_size = 64

# 连接超时设置
connect_timeout = 10
wait_timeout = 1800
interactive_timeout = 1800

# ===== 内存和缓存设置（小内存优化） =====
# InnoDB缓冲池（4G内存下优化为70%）
# 4G内存：800M缓冲池，4个实例
innodb_buffer_pool_size = 800M
innodb_buffer_pool_instances = 4

# InnoDB日志设置（适当减小）
innodb_log_file_size = 64M
innodb_log_files_in_group = 2
innodb_log_buffer_size = 8M

# 其他InnoDB设置
innodb_flush_log_at_trx_commit = 1
innodb_flush_method = O_DIRECT
innodb_file_per_table = 1
innodb_open_files = 1024

# 关闭查询缓存
query_cache_type = 0
query_cache_size = 0

# 表缓存（增加连接数后相应调整）
table_open_cache = 2048
table_definition_cache = 1024

# ===== 高并发优化（精简版） =====
# InnoDB并发设置
innodb_thread_concurrency = 0
innodb_read_io_threads = 4
innodb_write_io_threads = 4

# 锁和事务设置
innodb_lock_wait_timeout = 30
transaction_isolation = READ-COMMITTED

# 排序和临时表（4G内存下适当增加）
sort_buffer_size = 256K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
join_buffer_size = 256K
tmp_table_size = 32M
max_heap_table_size = 32M

# ===== 网络和包设置 =====
max_allowed_packet = 16M

# ===== 性能和安全 =====
# 关闭性能模式以减少内存占用
performance_schema = OFF

# 安全限制（增加最大连接数）
max_user_connections = 500
skip_name_resolve = 1

# ===== 其他优化 =====
# 字符集
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

# 默认存储引擎
default_storage_engine = InnoDB

# 禁止符号链接
symbolic-links = 0

[client]
port = 13306
socket = /data/mysql/data/mysql/mysql.sock
default-character-set = utf8mb4

[mysql]
default-character-set = utf8mb4

[mysqld_safe]
log-error = /data/mysql/log/mysqld.log
pid-file = /var/run/mysqld/mysqld.pid