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>flush table with read lock;
>show variables like '%timeout%';
>show master status;
或
# mysql -uroot -p123456 -S/data/3306/mysql.sock -e "show master status"
#mkdir -p /server/backup
#mysqldump -uroot -p123456 -S /data/3306/mysql.sock--events \ -A -B|gzip >/server/backup/mysql_bak.$(date +%F).sql.gz
#unlock tables;
从库搭建
1、安装MySQL需要的依赖包和编译软件
(1)安装MySQL需要的依赖包
#yum install ncurses-devel libaio-devel -y
(2)安装编译MySQL需要的软件
#tar xf cmake-2.8.8.tar.gz
#cd cmake-2.8.8
#./configure
#gmake && gmake install
或者直接yum安装
#yum -y install cmake
2、开始安装MySQL数据库
(1)建立MySQL用户
#useradd -s /sbin/nologin -M mysql
(2)采用编译方式安装MySQL
#tar xf mysql-5.5.49.tar.gz
#cd mysql-5.5.49
#cmake . -DCMAKE_INSTALL_PREFIX=/application/mysql-5.5.49\ -DMYSQL_DATADIR=/application/mysql-5.5.49/data \ -DMYSQL_UNIX_ADDR=/application/mysql-5.5.49/tmp/mysql.sock\ -DDEFAULT_CHARSET=utf8 \ -DDEFAULT_COLLATION=utf8_general_ci \ -DEXTRA_CHARSETS=gbk,gb2312,utf8,ascii \ -DENABLED_LOCAL_INFILE=ON \ -DWITH_INNOBASE_STORAGE_ENGINE=1 \ -DWITH_FEDERATED_STORAGE_ENGINE=1 \ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \ -DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \ -DWITHOUT_PARTITION_STORAGE_ENGINE=1 \ -DWITH_FAST_MUTEXES=1 \ -DWITH_ZLIB=bundled \ -DENABLED_LOCAL_INFILE=1 \ -DWITH_READLINE=1 \ -DWITH_EMBEDDED_SERVER=1 \ -DWITH_DEBUG=0
#make && make install
#ln -s /application/mysql-5.5.49/ /application/mysql
(3)配置从库配置文件
#mkdir –p /data/3307/data
#vim /data/3307/my.cnf
[client] port = 3307 socket = /data/3307/mysql.sock [mysql] no-auto-rehash [mysqld] user =mysql port =3307 socket =/data/3307/mysql.sock basedir = /application/mysql datadir = /data/3307/data open_files_limit = 1024 back_log = 600 max_connections = 800 max_connect_errors = 3000 table_cache = 614 external-locking = FALSE max_allowed_packet =8M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 100 thread_concurrency = 2 query_cache_size = 2M query_cache_limit = 1M query_cache_min_res_unit = 2k #default_table_type = InnoDB thread_stack = 192K #transaction_isolation = READ-COMMITTED tmp_table_size = 2M max_heap_table_size = 2M long_query_time = 1 #log_long_format #log-error = /data/3307/error.log #log-slow-queries = /data/3307/slow.log pid-file = /data/3307/mysql.pid log-bin = /data/3307/mysql-bin relay-log = /data/3307/relay-bin relay-log-info-file = /data/3307/relay-log.info binlog_cache_size = 1M max_binlog_cache_size = 1M max_binlog_size = 2M expire_logs_days = 7 key_buffer_size = 16M read_buffer_size = 1M read_rnd_buffer_size = 1M bulk_insert_buffer_size = 1M #myisam_sort_buffer_size = 1M #myisam_max_sort_file_size = 10G #myisam_max_extra_sort_file_size = 10G #myisam_repair_threads = 1 #myisam_recover lower_case_table_names = 1 skip-name-resolve slave-skip-errors = 1032,1062 replicate-ignore-db=mysql server-id = 3 innodb_additional_mem_pool_size = 4M innodb_buffer_pool_size = 32M innodb_data_file_path = ibdata1:128M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency = 8 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 4M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 innodb_file_per_table = 0 [mysqldump] quick max_allowed_packet = 2M [mysqld_safe] log-error=/data/3307/mysql_3307.err pid-file=/data/3307/mysqld.pid
(4)配置从库启动文件
#vim /data/3307/mysql
#!/bin/sh ################################################ #init port=3307 mysql_user="root" mysql_pwd="123456" CmdPath="/application/mysql/bin" mysql_sock="/data/${port}/mysql.sock" #startup function function_start_mysql() { if [ ! -e"$mysql_sock" ];then printf "Starting MySQL...\n" /bin/sh${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 >/dev/null & else printf "MySQL isrunning...\n" exit fi } #stop function function_stop_mysql() { if [ ! -e "$mysql_sock"];then printf "MySQL isstopped...\n" exit else printf "StopingMySQL...\n" ${CmdPath}/mysqladmin-u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown fi } #restart function function_restart_mysql() { printf "RestartingMySQL...\n" function_stop_mysql sleep 2 function_start_mysql } case $1 in start) function_start_mysql ;; stop) function_stop_mysql ;; restart) function_restart_mysql ;; *) printf "Usage:/data/${port}/mysql {start|stop|restart}\n" esac
(5)修改文件权限
#chown -R mysql.mysql /data
#chmod 700 /data/3307/mysql
#echo 'export PATH=/application/mysql/bin:$PATH'>>/etc/profile
#source /etc/profile
#cd /application/mysql/scripts
#./mysql_install_db--basedir=/application/mysql --datadir=/data/3307/data --user=mysql
#/data/3307/mysql start
#mysql -S /data/3307/mysql.sock
#mysqladmin -u root -S /data/3307/mysql.sockpassword '123456'
#mysql -uroot -p -S /data/3307/mysql.sock
#find /data -type f -name "mysql"|xargschmod 700
#find /data -type f -name "mysql" -execchown root.root {} \;
#echo "#mysql multi instances">>/etc/rc.local
#echo "/data/3307/mysql start">>/etc/rc.local
#mysql -uroot -p123456 -S /data/3307/mysql.sock
#show variables like 'server_id';
#select user,host from mysql.user;
#drop user 'root'@'::1';
#drop user ''@'db02';
#drop user 'root'@'db02';
#drop user ''@'localhost';
#flush privileges;
登录从库执行
>CHANGE MASTER TO >MASTER_HOST='10.0.0.51', <==主库IP >MASTER_PORT=3306, <==主库端口号 >MASTER_USER='rep', <==复制帐号 >MASTER_PASSWORD='123456', <==rep用户的密码 >MASTER_LOG_FILE='mysql-bin.000002',<==主库执行showmaster status;查看到的二进制日志文件名称 >MASTER_LOG_POS=729; <==主库执行show master status;查看到的二进制日志偏移
#mysql -uroot -p123456 -S /data/3307/mysql.sock -e"start slave;"
#mysql -uroot -p123456 -S /data/3307/mysql.sock -e"show slave status\G;"
Slave_IO_Running: Yes Slave_SQL_Running: Yes
其中显示有上面两行内容表示主从以开始同步
# gzip -dmysql_bak.2016-08-25.sql.gz
# mysql -uroot -p123456 -S/data/3307/mysql.sock对于以上关于mysql主从搭建方法,如果大家还有更多需要了解的可以持续关注我们创新互联的行业推新,如需获取专业解答,可在官网联系售前售后的,希望该文章可给大家带来一定的知识更新。
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