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Connectors More MySQL.com Downloads Developer Zone Section Menu: Documentation Home MySQL 5.7 Reference Manual Preface and Legal Notices General Information Installing and mysql purge relay logs Upgrading MySQL Using MySQL as a Document Store Tutorial MySQL Programs could not find target log during relay log initialization MySQL Server Administration Security Backup and Recovery Optimization Language Structure Globalization Data Types Functions and Operators mysql relay log vs binlog SQL Statement Syntax The InnoDB Storage Engine Alternative Storage Engines High Availability and Scalability Replication Configuring Replication Binary Log File Position Based Replication Configuration Overview Setting Up

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Binary Log File Position Based Replication Setting the Replication Master Configuration Creating a User for Replication Obtaining the Replication Master Binary Log Coordinates Choosing a Method for Data Snapshots Setting Up Replication Slaves Adding Slaves to a Replication Environment Replication with Global Transaction Identifiers GTID Concepts Setting Up Replication Using GTIDs Using GTIDs mysql relay log read failure for Failover and Scaleout Restrictions on Replication with GTIDs MySQL Multi-Source Replication MySQL Multi-Source Replication Overview Multi-Source Replication Tutorials Multi-Source Replication Monitoring Multi-Source Replication Error Messages Changing Replication Modes on Online Servers Replication Mode Concepts Enabling GTID Transactions Online Disabling GTID Transactions Online Verifying Replication of Anonymous Transactions Replication and Binary Logging Options and Variables Replication and Binary Logging Option and Variable Reference Replication Master Options and Variables Replication Slave Options and Variables Binary Logging Options and Variables Global Transaction ID Options and Variables Common Replication Administration Tasks Checking Replication Status Pausing Replication on the Slave Replication Implementation Replication Formats Advantages and Disadvantages of Statement-Based and Row-Based Replication Usage of Row-Based Logging and Replication Determination of Safe and Unsafe Statements in Binary Logging Replication Implementation Details Replication Channels Commands for Operations on a Single Channel Compatibility with Previous Replication Statements Startup Options and Replication Channels Replication Channel Naming Conventions Replication Relay and Status Logs The Slave Relay Log Sla

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Could Not Initialize Master Info Structure

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My.cnf Relay-log

Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top moving a mysql slave to a new host : Failed to open the relay https://dev.mysql.com/doc/refman/5.7/en/slave-logs-relaylog.html log up vote 1 down vote favorite I have a master-master setup which I want to move to a new pair of servers (from linux to opensolaris). linux boxes names are shard1-1 and shard1-2, and osol boxes names are shard1-1-osol and shard1-2-osol. this is what I did: 1. took down mysql server on both linux boxes, copied the data to the osol boxes. 2. edited master.info on each of the osol boxes, changed master from shard1-1 to shard1-1-osol http://serverfault.com/questions/61471/moving-a-mysql-slave-to-a-new-host-failed-to-open-the-relay-log and vice versa on both machines. when I started mysql on the first osol machine, I see this in the error log: looks like mysql does not like the host name change, and it's bitching about it. the mysqld-relay-bin.000707 file exists in the datadir, so it's not clear what mysql is whining about. 090902 2:26:03 InnoDB: Started; log sequence number 246 3528553673 090902 2:26:03 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=shard1-1-osol-relay-bin' to avoid this problem. 090902 2:26:03 [ERROR] Failed to open the relay log './mysqld-relay-bin.000707' (relay_log_pos 19653396) 090902 2:26:03 [ERROR] Could not find target log during relay log initialization 090902 2:26:03 [ERROR] Failed to initialize the master info structure mysql replication share|improve this question asked Sep 2 '09 at 9:59 Omry 5501616 add a comment| 4 Answers 4 active oldest votes up vote 2 down vote accepted The server can't find the relay logs because they are named based in part upon the host name. You are going to have ALL KINDS of problems trying to bring the slave up using that technique. I suggest reinitializing the slave from the new master. Just drop all the databases on the slave, take a dump from the master using mysqldump, import it onto the slave and then use CHANGE MASTER TO in ord

log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about http://dba.stackexchange.com/questions/53893/mysql-relay-log-corrupted-how-do-i-fix-it-tried-but-failed Stack Overflow the company Business Learn more about hiring developers or posting ads with https://alexzeng.wordpress.com/2013/10/17/how-to-fix-mysql-slave-after-relay-log-corrupted/ us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question relay log Anybody can answer The best answers are voted up and rise to the top MySQL relay log corrupted, how do I fix it? Tried but failed up vote 4 down vote favorite 4 A MySQL v5.1.61 relay got corrupted when the machine suddenly shut down. I tried to fix it but it didn't work. — How do I fix it? Did I do something wrong? As far as I've read, corrupted mysql relay log MySQL relay logs are easily fixed: change master to master_log_file='', master_log_pos=; where Relay_Master_Log_File and Exec_Master_Log_Pos are listed by: mysql> show slave status; However when I did change master status ..., I got a primary key violation error. How is that possible? Is the above procedure no correct, or is e.g. some +1 missing? (For now I've simply re-imported a --master-data mysqldump from the master to the slave, and this solved the problem. However, in the future, doing that might not be appropriate.) Here follows details about my particular problem: mysql> show slave status \G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: the-master-host Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000021 Read_Master_Log_Pos: 33639968 Relay_Log_File: mysql-relay-bin.000271 Relay_Log_Pos: 2031587 Relay_Master_Log_File: mysql-bin.000020 Slave_IO_Running: Yes Slave_SQL_Running: No Replicate_Do_DB: the_database Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 1594 Last_Error: Relay log read failure: Could not parse relay log event entry. The possible reasons are: the master's binary log is corrupted (you can check this by running 'mysqlbinlog' on the binary log), the slave's relay log is corrupted (you can check this by running 'mysqlbinlog' on the relay log), a network problem, or a bug in the master's or slave's MySQL code. If you want to check the master's binary log or s

a simple PK update SQL takes 500+ seconds inOracle → How-to fix Mysql slave after relay logcorrupted October 17, 2013 10 Comments We run into issues like "Relay log read failure: Could not parse relay log event entry" many times on Mysql slave node. Most of time in our cases, it's due to Linux host crashed unexpectedly. The detail error is like this: mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: alexzeng.wordpress.com Master_User: mysql_rep Master_Port: 3306 Connect_Retry: 60 Master_Log_File: LBMS-bin.000012 Read_Master_Log_Pos: 239005305 Relay_Log_File: LBMS-relay-bin.000004 Relay_Log_Pos: 221245258 Relay_Master_Log_File: LBMS-bin.000012 Slave_IO_Running: Yes Slave_SQL_Running: No Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 1594 Last_Error: Relay log read failure: Could not parse relay log event entry. The possible reasons are: the master's binary log is corrupted (you can check this by running 'mysqlbinlog' on the binary log), the slave's relay log is corrupted (you can check this by running 'mysqlbinlog' on the relay log), a network problem, or a bug in the master's or slave's MySQL code. If you want to check the master's binary log or slave's relay log, you will be able to know their names by issuing 'SHOW SLAVE STATUS' on this slave. Skip_Counter: 0 Exec_Master_Log_Pos: 221245113 Relay_Log_Space: 239007065 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 1594 Last_SQL_Error: Relay log read failure: Could not parse relay log event entry. The possible reasons are: the master's bina

 

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