Error Counting Relay Log Space Mysql
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didn't fix my problem. What I encountered was that the relay-bin from my MySQL slave could not find target log during relay log initialization server has already been ‘rotated', meaning deleted from the folder. This
Failed To Open The Relay Log
happens when the slave has been disconnected from the master for quite a long time already and has could not initialize master info structure not replicated anything. A simple way to fix this is to flush the logs, but make sure the slave is stopped before using this command… FLUSH LOGS; Bring could not find target log file mentioned in relay log info in the index file in a fresh copy of the database from the master-server and update the slave-server database. THIS IS IMPORTANT! Since if you don't update the slave database, you will not have the data from the time you were disconnected until you reset the relay logs. So UPDATE YOUR SLAVE WITH THE LATEST DATABASE FROM THE MASTER! Now when the
Error Reading Master Configuration
logs are flushed,all the relay-bin logs will be deleted when the slave is started again. Usually, this fixes the problem, but when you start the slave and the failed relay log error is still there, now you have to do some more desperate measures… reset the slave. This is what I had to do to fully restore my MySQL slave server. Reseting the slaves restores all the settings to default… password, username, relay-log, port, table to replicate, etc… So better to have a copy of your settings first before actually do a slave reset. When your ready to rest the slave, do the command… RESET SLAVE; after which you should restore all your setting with a command something like… CHANGE MASTER TO MASTER_HOST=..... now start your server with… SLAVE START; check your slave server with… SHOW SLAVE STATUS\G look for … Slave_IO_Running: Yes
Slave_SQL_Running: Yes both should be YES, if not, check your syslog if there are other errors encountered. I'll leave this until here since this is what I encountere
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Mysql Delete Relay Logs
Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question http://www.slickdev.com/2008/10/20/mysql-slave-failed-to-open-the-relay-log/ Anybody can answer The best answers are voted up and rise to the top Hard reboot causes MySQL replication to break up vote 0 down vote favorite I have encountered an issue with my replication setup. Under normal circumstances it performs as intended, but it breaks if it encounters a hard reboot (I pull the power cable). Setup The setup consists of two servers, http://serverfault.com/questions/715849/hard-reboot-causes-mysql-replication-to-break server-1 and server-2. The replication setup is a circular replication. Both servers are slaves replicating from the other host as if it were the master. Software Red Hat 6.5 MySQL 5.1.73-3 MySQL-libs 5.1.73-3 MySQL-server 5.1.73-3 Redundancy configuration The replication configuration is as follows for server-1, and is mirrored for server-2: GRANT REPLICATION SLAVE ON *.* TO 'replicant'; FLUSH TABLES WITH READ LOCK;" #Use "SHOW MASTER STATUS \G;" to determine log position and log file UNLOCK TABLES; # set status on slave server using the values retieved earlier CHANGE MASTER TO MASTER_HOST='server-2', MASTER_USER='replicant', MASTER_LOG_FILE='[log file]', MASTER_LOG_POS=[log pos];" START SLAVE; Error information This information is retrieved when the server-2 has encountered a hard reboot and the replication is broken. server-1 slave status *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: server-2 Master_User: replicant Master_Port: 3306 Connect_Retry: 60 Master_Log_File: bin.000004 Read_Master_Log_Pos: 37550 Relay_Log_File: relay.000427 Relay_Log_Pos: 245 Relay_Master_Log_File: bin.000004 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 37550 Relay_Log_Space: 529 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: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last
Databases, mySQL Add comments So you woke up, because your mysql http://hoschie.org/2008/02/mysql-failed-to-open-the-relay-log/ replication failed suddenly with an error like: Feb 15 07:41:06 rdb-sl http://dba.stackexchange.com/questions/53893/mysql-relay-log-corrupted-how-do-i-fix-it-tried-but-failed mysqld[18223]: 080215 7:41:06 [ERROR] Failed to open log (file './db-sl-relay-bin.000030', errno 2)
Feb 15 07:41:06 db-sl mysqld[18223]: 080215 7:41:06 [ERROR] Failed to open the relay log './db-sl-relay-bin.000030' (relay_log_pos 75527094)
Feb 15 07:41:06 db-sl mysqld[18223]: 080215 7:41:06 [ERROR] Could not open log relay log file before you consider making a mysqldump -masterdata on the master database and reimport the entire dump.. try this: -> stop mysql on the slave server -> find the directory that contains the relay logs (usually /var/lib/mysql) -> delete all relay logs called hostname-relay-bin.XXX, hostname-relay-bin.index and relay-log.info -> restart mysql Your mysql will start could not find with fresh relay logs and is getting the missing data directly from the master server, as there will be probably still bin logs! Note: This is a kind of last resort action, no guarantees here 🙂 Leave a Reply Click here to cancel reply. You must be logged in to post a comment. Home About & Contact Useful Stuff GPG Key Free WordPress Themes Tagsapp Backup database Dovecot freebsd server imap India iOS iphone ipv6 iTunes linux Mac mediatomb mkv mySQL ping proxy PS3 squid Topics Databases (1) mySQL (1) Games (1) PS3 (1) Music (1) Operating Systems (11) FreeBSD (4) General Linux (6) Gentoo Linux (4) iOS (2) OS X (1) Ubuntu Linux (3) Traveling (11) India (11) Uncategorized (1) Meta Register Log in Entries (RSS) Comments (RSS) WordPress Tagtastic..app Backup database Dovecot freebsd server imap India iOS iphone ipv6 iTunes linux Mac mediatomb mkv mySQL ping proxy PS3 squid Links Knobelbecher Networks Holidays in Thuringia Schnitzelkuchen.de
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 Stack Overflow the company Business Learn more about hiring developers or posting ads with 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 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 logs are easily fixed: change master to master_log_file='