mysql replication status

thread is blocked, it no longer blocks monitoring operations, such as show slave status. It also introduces a new thread state (the receiver thread is waiting for Disk Space Resources). In addition, when the disk is full, in addition, you cannot release the disk space so that the receiver thread can continue the unfinished work. In this case, you can manually stop it. Generally, there is no problem. However, if a write event is cleared and the relay

automatic log days to prevent a single log file is too large or in MySQL to perform flush logs manual wheel-shaped two Binary log, combined with Crond automatic rotation log. Www.it165.net---------------------------------------------Other common configuration references are as follows: [mysqld] Datadir=/database Basedir=/usr/local/mysql Pid-file=/var/run/mysqld/mysql5.pid Socket=/var/run/mysqld/mysql5.sock

Compared with the replication of NoSQL databases such as MongoDB and Redis, MySQL replication is quite complex! OverviewFirst, the master server records data changes to the master log, then reads the master log on the master server from the server through the I/O thread, and writes it to the slave server's relay log, then, the SQL thread reads the relay log and

-sync (semi-synchronous replication)Semi-synchronous replication: 5.5集成到mysql，以插件的形式存在，需要单独安装 确保事务提交后binlog至少传输到一个从库 不保证从库应用完这个事务的binlog 性能有一定的降低，响应时间会更长 网络异常或从库宕机，卡主主库，直到超时或从库恢复 Master-Slave replication-the principle of asynchronous replication The principle of semi-synchro

know the date of the last query copied from the server?A: You can view the results of the Seconds_behind_master column of the show SLAVE status statement.6. Q: How do I force the primary server to block updates until it synchronizes from the server?A: Use the following steps:1. On the primary server, execute these statements:Copy CodeThe code is as follows:mysql> FLUSH TABLES with READ LOCK;mysql> SHOW MAS

Mysqladmin is an important client of MySQL, the most common is to use it to close the database, in addition to this command can also understand the running state of MySQL, process information, process killing and so on. This article describes how to use the Mysqladmin extended-status (because there is no "ambiguity", so you can use Ext instead) to understand the

fileMysql_install_db-datadir =/var/lib/mysql3307-user = mysqlC. start multiple instancesRun mysqld_multi-config-file =/etc/my. cnf. multi report to view the running status of multiple instances. The result is as follows:MySQL server from group: mysqld1 is runningMySQL server from group: mysqld2 not runningIt indicates that instance 1 is running and instance 2 is not running. you can use:Mysqld_multi-config-file =/etc/my. cnf. multi start 2 to start i

IP192.168. 1.Addedsep9 -: One: - 192.168. 1. Oneavahi-daemon[1407]: RegisteringNewAddress record for 192.168. 1.On eth0. Ipv4.sep9 -: One: - 192.168. 1. Onekeepalived_vrrp[7457]: Vrrp_instance (vi_1) sending gratuitous ARPs on eth0 for 192.168. 1.Check the LVS cluster status on LVS2, everything is OK.# Ipvsadm-ln 1.2 . 1 (size=4096) Prot localaddress:port Scheduler Flags- remoteaddress:port Forward Weight activeconn inactconntcp 192.168

on the in the MySQL configuration file on master: [Mysqld] Rpl_semi_sync_master_enabled=1 rpl_semi_sync_master_timeout=10000 "Additional configuration required for asynchronous replication is omitted here" can use The SQL command dynamically enables semi-synchronous replication. mysql> set global rpl_semi_sync_mas

Tags: scheme nbsp detection read/write TPS body Description decision ERRThe main contents of this article are as follows:1. Background generated by group replication2. Comparison of several replication technologies3. Failure detection4. Group members5. Tolerance of failures6. Node State of a member7. Two modes of group replication8. Donor nodes 1.background generated by group replication multiple The

the newly added semi variable, the module is successfully installed) # Mysql> set global rpl_semi_sync_slave_enabled = 1; # Stop slave; # Start slave; Finally, write common configuration parameters in the configuration file: 192.168.1.141: [Mysqld] Rpl_semi_sync_master_enabled = 1 Rpl_semi_sync_master_timeout = 1000 192.168.1.142: [Mysqld] Rpl_semi_sync_slave_enabled = 1 4. view the status of semi-sync

- # Row Save affects record data + # Mixed in front of two combinations -Binlog_format=Mixed 2, Slave end 1 # Stop Master- slave synchronization 2 mysql> stop slave; 3 4 # Reconnect Time -out when the connection is disconnected 5 mysql> to Master_connect_retry=; 6 7 # Turn on master -Slave synchronization 8 mysql> start slave; The above connection ti

The benefits of using MySQL master-slave replication are: 1, the use of the master-slave server architecture, stability can be improved. If the primary server fails, we can use the server to provide services;2, in the master and slave server separately processing user's request, may enhance the data processing efficiency;3. Copy the data from the primary server to the server to protect the data from accide

"title=" Vim.master.jpg "alt=" Wkiom1bt2hojgvdzaaaprm8izoi279.jpg "/>650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/7C/A1/wKiom1bT8kDi-GVfAABBTj-YGG8772.jpg "title=" Master.cnf.jpg "alt=" Wkiom1bt8kdi-gvfaabbtj-ygg8772.jpg "/>Restart MySQL Service650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/7C/9D/wKioL1bT3CjT_woMAAAkkizp8NE465.jpg "title=" Restart Mysql.jpg "alt=" Wkiol1bt3cjt_womaaakkizp8ne465.jpg "/>2. Log in to the

primary MySQL service cannot be the same as from the server Log-bin=lius // Open binary log, custom after equals sign, lius.000001 binary log appears under DataDir binlog-ignore-db = mysql //can also be binlog-do-db=db1,db2, Specifying multiple synchronization databases, specifying a library that ignores synchronization #/etc/init.d/mysqld Restart "2" Login Master_mysql, do the following:

preparation of the main library before copying:1. Add a copy account to the main library:Log in to MySQL using the sock file:Mysql-uroot-p-s/var/lib/mysql3307/mysql3307.sock (This socket file remember, is defined in the previous definition of the instance) Mysql>grant replication Slave,replication Client on * *

, use single-transcation:Shell> mysqldump -- all-databases -- single-transaction -- master-data = 1> data. SQLData import from slaveMysql 5. view the master configuration.Mysql> show master status;+ ------------------ + ---------- + -------------- + ------------------ +| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+ ------------------ + ---------- + -------------- + ------------------ +| Mysql-bin.0

is configured to show slave status, and two new attributes are defined on Datahost: switchtype= "2" and slavethreshold= "100", This means that the read-write separation and switching mechanism of the MySQL master-slave replication state binding is turned on, and the mycat heartbeat mechanism is detected by detecting show slave

Root Password Abc@defMaster server Configuration Primary server configuration file/etc/my. Cnf[Mysqld]Server-id=1Binlog-do-db=test2Relay-log=/var/lib/mysql/mysql-relay-binRelay-log-index=/var/lib/mysql/mysql-relay-bin.indexLog-error=/var/lib/mysql/mysql.errMaster-info-file

Tags: Step five completeMySQL5.6 Master-slave replicationFive steps to complete MySQL master-slave replication1./ETC/MY.CNF configuration of master and slave server, set unique ID to enable binary log.2. Create a master-slave copy of the account and authorize replication slave permissions.3. Query the status of master to obtain the primary server binary log infor