mysql

1.挂载格式化
 fdisk -l
 fdisk -u /dev/vdb
p

n

 mkfs -t xfs /dev/vdb1
 mkdir /mysqldata

 echo `blkid /dev/vdb1 | awk '{print $2}' | sed 's/\"//g'` /mysqldata xfs defaults 0 0 >> /etc/fstab

mount -a

 

2.格式化swap

 dd if=/dev/zero of=/var/swap bs=1024 count=10240000

 mkswap /var/swap

 swapon /var/swap

 

 

 

修改参数
 vi /etc/sysctl.conf

 

vm.swappiness=1
vm.dirty_background_ratio=5
vm.dirty_ratio=10

net.ipv4.neigh.default.gc_stale_time = 120

# see details in https://help.aliyun.com/knowledge_detail/39428.html
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_announce = 2
net.ipv4.conf.all.arp_announce = 2

# see details in https://help.aliyun.com/knowledge_detail/41334.html
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.tcp_synack_retries = 2

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

kernel.sysrq = 1

kernel.sysrq = 1
pv4.tcp_syncookies= 1
net.ipv4.tcp_tw_reuse= 1
net.ipv4.tcp_tw_recycle= 1
net.ipv4.tcp_fin_timeout= 30

 

 

 vi /etc/security/limits.conf

* soft nofile 65535
* soft noproc 65535
* hard noproc 65535
* soft nofile 65535
* hard nofile 65535

* hard nofile 65535

sysctl -p

 

 yum install libaio

 yum install nc -y

yum install lrzsz

 

 

 

 mkdir -p /usr/local/mysql

 cd mysql-8.0.27-linux-glibc2.17-x86_64-minimal
 mv * /usr/local/mysql/
 groupadd mysql
chown -R mysql.mysql /usr/local/mysql

 vi /etc/my.cnf

[mysqld]
socket  = /mysqldata/mysql.sock
port=3306
log_bin = mysql-bin
binlog_format = ROW
server_id = 101
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 2G
max_binlog_size = 1G
binlog_rows_query_log_events = 1
binlog_expire_logs_seconds = 604800
binlog_checksum = NONE
gtid_mode = ON
enforce_gtid_consistency = TRUE

log_timestamps = SYSTEM
open_files_limit = 65535
back_log = 1024
table_open_cache = 1024
table_definition_cache = 1024
thread_stack = 512K

log_error = /mysqldata/error.log
log_error_verbosity = 3
slow_query_log = 1
log_slow_extra = 1
slow_query_log_file = /mysqldata/slow.log
long_query_time = 1
log_queries_not_using_indexes = 1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_bin = /mysqldata/mybinlog

transaction_isolation=READ-COMMITTED
innodb_buffer_pool_size = 30960M

innodb_io_capacity = 15000
innodb_io_capacity_max =30000
innodb_open_files = 65535
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_lock_wait_timeout = 40
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_online_alter_log_max_size = 4G
innodb_print_ddl_logs = 1
innodb_status_file = 1
innodb_status_output = 0
innodb_status_output_locks = 1
innodb_sort_buffer_size = 67108864
innodb_adaptive_hash_index = OFF

innodb_monitor_enable = "module_innodb"
innodb_monitor_enable = "module_server"
innodb_monitor_enable = "module_dml"
innodb_monitor_enable = "module_ddl"
innodb_monitor_enable = "module_trx"
innodb_monitor_enable = "module_os"
innodb_monitor_enable = "module_purge"
innodb_monitor_enable = "module_log"
innodb_monitor_enable = "module_lock"
innodb_monitor_enable = "module_buffer"
innodb_monitor_enable = "module_index"
innodb_monitor_enable = "module_ibuf_system"
innodb_monitor_enable = "module_buffer_page"
#innodb_monitor_enable = "module_adaptive_hash"

performance_schema = 1
#performance_schema_instrument = '%memory%=on'
performance_schema_instrument = '%lock%=on'

admin_address = '127.0.0.1'
admin_port = 33062
skip_name_resolve = 1
default_time_zone = '+8:00'
basedir=/usr/local/mysql
datadir=/mysqldata
max_connections=2000
max_connect_errors=100000
character-set-server=utf8mb4
default-storage-engine=INNODB
default_authentication_plugin=mysql_native_password
lower_case_table_names = 1
interactive_timeout = 1800
wait_timeout = 1800
lock_wait_timeout = 3600
tmp_table_size = 64M
max_heap_table_size = 64M
[mysql]
default-character-set=utf8mb4
[client]
port=3306
socket  = /mysqldata/mysql.sock
default-character-set=utf8mb4

 

 groupadd mysql
 useradd -g mysql mysql
 chown -R mysql.mysql /usr/local/mysql/

 ./bin/mysqld --defaults-file=/etc/my.cnf --initialize-insecure --user=mysql
cd support-files/

mysql.server start

 

 

主从配置

 

change master to master_host='xx.xxx.xxx.xxx', master_user='repl', master_password='xxxx', master_port=3306, MASTER_AUTO_POSITION = 1;