Mysql主从搭建
Mysql主从搭建文档
环境：一台master ：192.168.0.186 （centos 6.4）
一台slave： 192.168.0.187
两台都安装mysql源码 yum 都可以，我这里为源码 5.6
Selinux 和 iptables 就不说了直接关了吧。直奔主题
Master要做什么设置呢
开启binlog日志
ServerID 别和slave的一样
给slave的访问权限（mysql里面的grant命令）
Slave要做什么设置嗯
serverid 不一样
change master to 的 5个选项
master_host='', master的主机IP
master_user='', 同步的账号，这里的账号名要和在主grant权限的账号一致；
master_password='', 也是和在主上grant授权的密码一致
master_log_file='’ 主上锁表后showmaster status 里面的binlog日志
master_log_pos=; 主上锁表后showmaster status 里面的pos 节点
==========================实===========战==============================
我们先说master，在说slave。
这是我的master的my.cnf文件 5.6的。有的可能和其他版本不兼容，里面有优化参数也可以去掉
[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
user = mysql
port = 3306
socket = /tmp/mysql.sock
datadir = /data/mydata/data
#old_passwords = 1
lower_case_table_names = 1
character-set-server = utf8
default-storage-engine = MYISAM
server_id = 3 //ID
log-bin =mysqlmaster-bin.log //binlog日志开启和名字
sync_binlog=1
innodb_buffer_pool_size=512M
innodb_flush_log_at_trx_commit=1
lower_case_table_names=1
log_bin_trust_function_creators=1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
log-error = error.log
#long_query_time = 1
#slow_query_log
#slow_query_log_file = slow.log
#binlog_cache_size = 4M
#binlog_format = mixed
#max_binlog_cache_size = 32M
#max_binlog_size = 1G
expire_logs_days = 30
ft_min_word_len = 4
back_log = 512
max_allowed_packet = 64M
max_connections = 1000
max_connect_errors = 100
join_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 16M
sort_buffer_size = 8M
table_open_cache = 1000
thread_cache_size = 256
max_heap_table_size = 64M
tmp_table_size = 64M
thread_stack = 192K
thread_concurrency = 8
local-infile = 0
skip-show-database
skip-name-resolve
skip-external-locking
connect_timeout = 600
interactive_timeout = 600
wait_timeout = 600
#*** MyISAM
key_buffer_size = 512M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 1G
myisam_repair_threads = 1
concurrent_insert = 2
myisam_recover
max_allowed_packet = 32M
max_heap_table_size = 128M
sort_buffer_size = 16M
join_buffer_size = 16M
thread_cache_size = 16
thread_concurrency = 8
query_cache_size = 128M
ft_min_word_len = 8
thread_stack = 512K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 128M
[client]
default-character-set=utf8
进入mysql授权slave有复制master的权限。
GRANT REPLICATION SLAVEON *.* TO 'repl'@'192.168.0.187' IDENTIFIED BY '123456';
这里我的用户是repl 授权所有库 地址是 187 连接密码是 123456（大小写无所谓）
再刷新权限 flush privileges;
先对mysql上只读锁：FLUSH TABLES WITH READLOCK;
然后就是showmaster status；
2个红色方框 slave 配置的时候要用。
Master 就配置完了
再来配置slave，先开slave的 my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
user = mysql
server_id = 2
port = 3306
socket = /tmp/mysql.sock
datadir = /data/mydata/data
#old_passwords = 1
lower_case_table_names = 1
character-set-server = utf8
default-storage-engine = MYISAM
#log-bin = mysqlslave-bin.log
sync_binlog=1
innodb_buffer_pool_size=512M
innodb_flush_log_at_trx_commit=1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
lower_case_table_names=1
log_bin_trust_function_creators=1
log-error = error.log
#long_query_time = 1
#slow_query_log
#slow_query_log_file = slow.log
#binlog_cache_size = 4M
#binlog_format = mixed
#max_binlog_cache_size = 32M
#max_binlog_size = 1G
expire_logs_days = 30
ft_min_word_len = 4
back_log = 512
max_allowed_packet = 64M
max_connections = 1000
max_connect_errors = 100
join_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 16M
sort_buffer_size = 8M
table_open_cache = 1000
thread_cache_size = 256
max_heap_table_size = 64M
tmp_table_size = 64M
thread_stack = 192K
thread_concurrency = 8
local-infile = 0
skip-show-database
skip-name-resolve
skip-external-locking
connect_timeout = 600
interactive_timeout = 600
wait_timeout = 600
#*** MyISAM
key_buffer_size = 512M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 1G
myisam_repair_threads = 1
concurrent_insert = 2
myisam_recover
max_allowed_packet = 32M
max_heap_table_size = 128M
sort_buffer_size = 16M
join_buffer_size = 16M
thread_cache_size = 16
thread_concurrency = 8
query_cache_size = 128M
ft_min_word_len = 8
thread_stack = 512K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 128M
[client]
default-character-set=utf8
然后在 changemaster to
mysql> change masterto
-> master_host='192.168.0.187',master_user='repl',master_password='123456',master_log_file='mysqlslave-bin.000011',master_log_pos=120;
然后在启动slave
Start slave；
在使用 show slave status\G来查看主从是否成功；2个yes一个0就可以了。注意pos点，即为同步节点。
然后自己在master的mysql 主机上解锁表：mysql> UNLOCKTABLES;
============================验证===========
Master 创建一个表会同步到slave上。这就不多说了。
==================================可能遇到的错误==========================
可以在留言发出来，博主看到会回复哦！哈哈
本文出自 “Linux折腾” 博客，谢绝转载！