​Mysql双主配置及安装部署

groupaddmysql

useradd-r -g mysql -s /bin/false mysql

cd/usr/local

chown-R mysql:mysql  mysql-8.0.23-linux-glibc2.12-x86_64.tar.xz
tar-xvf mysql-8.0.23-linux-glibc2.12-x86_64.tar.xz
chown-R mysql:mysql mysql-8.0.23-linux-glibc2.12-x86_64
ln-s mysql-8.0.23-linux-glibc2.12-x86_64 mysql
chown-R mysql:mysql mysql

mkdir-p /mysqldata/data

mkdir-p /mysqldata/log

mkdir-p /mysqldata/sys

chown-R mysql:mysql  /mysqldata/

chmod-R 750 /mysqldata/

exportPATH=/usr/local/mysql/bin:$PATH

source/etc/profile

vi/etc/my.cnf
[mysql]
prompt=[u@h][d]>\_
socket=/mysqldata/sys/mysql.sock

[mysqld]
user=mysql
datadir=/mysqldata/data/
socket=/mysqldata/sys/mysql.sock
character_set_server=utf8mb4
transaction_isolation=read-committed
explicit_defaults_for_timestamp=1
max_allowed_packet=16777216
event_scheduler=1
server_id=212211
lower_case_table_names=1

interactive_timeout=1800
wait_timeout=1800
skip_name_resolve=1
max_connections=2000
max_connect_errors=100000

table_open_cache=4096
table_definition_cache=4096
table_open_cache_instances=64

read_buffer_size=6M
read_rnd_buffer_size=16M
sort_buffer_size=16M
tmp_table_size=64M
join_buffer_size=64M
thread_cache_size=64

log_error=/mysqldata/log/alert.log
log_bin=/mysqldata/log/binlog
master_info_repository=table
relay_log_info_repository=table
sync_binlog=1
gtid_mode=on
enforce_gtid_consistency=1
log_slave_updates=1
binlog_format=row
binlog_rows_query_log_events=1
relay_log=/mysqldata/log/relay.log
relay_log_recovery=1
#slave_rows_search_algorithms=index_scan,hash_scan

innodb_buffer_pool_size=16G
innodb_buffer_pool_instances=4
innodb_buffer_pool_load_at_startup=1
innodb_buffer_pool_dump_at_shutdown=1
innodb_lru_scan_depth=2048
innodb_flush_method=o_direct
innodb_open_files=4096
innodb_log_file_size=1024000000

cd/usr/local/mysql

bin/mysqld--initialize --lower-case-table-names=1 -user=mysql

cd/usr/local/mysql

bin/mysqld_safe--user=mysql &

mysql-uroot -p（初始密码在error.log里）

VKgfkfqUA0,7

alteruser root@localhost identified by My1qaz@WSX;

flushprivileges;

cd/usr/local/mysql

cpsupport-files/mysql.server /etc/init.d/mysql

chmod+x /etc/init.d/mysql

chkconfig--add mysql

chkconfig--list mysql

servicemysql start

createuser repl@% identified with mysql_native_password by "2w3e@W#E";

grantfile on *.* to repl@%;

grantreplication slave on *.* to repl@%;

flushprivileges;

changemaster 
tomaster_host=192.168.245.138,master_port=3306,master_user
=repl,master_password=2w3e@W#E,master_auto_position=1;

startslave;

showslave statusG

createuser sysadmin@% identified with mysql_native_password by"1q2w!Q@W";

grantall on *.* to sysadmin@%;

flushprivileges;

changemaster tomaster_host=192.168.245.139,master_port=3306,master_user=repl,master_password=2w3e@W#E,master_auto_position=1;

startslave;

showslave statusG

192.168.245.138：
CREATEDATABASE `gohealth-plat` CHARACTER SET utf8mb4 COLLATEutf8mb4_general_ci;
usegohealth-plat;

createtable product(
product_idint(10) not NULL,
product_namevarchar(100) not NULL,
product_tyepvarchar(32) not NULL,
sale_priceint(10) default 0,
input_priceint(10) default 0,
regist_timedate,
primarykey (product_id));

192.168.245.139：
showdatabases;
usegohealth-plat;
showtables;

192.168.245.139：
usegohealth-plat;
insertinto product values(555,sdfsd,sdfd,54,215,null);
select* from product;

192.168.245.138：
select* from product;