Post: How to create/restore a slave using GTID replication in MySQL 5.6
… is that if you want GTID support log_slave_updates will need to be enabled in slave server and the performance impact…. MySQL keeps two global variables with GTID numbers on it: gtid_executed: it...
View ArticlePost: Auditing login attempts in MySQL
…logs. General Query Log The first option is the General Query Log. Let’s see an example: Enable the log: general_log_file = /var/log/mysql/mysql.log general_log… 14 UPDATE_COMMANDS: 103...
View ArticlePost: Virident vCache vs. FlashCache: Part 2
… pattern when looking at transaction latency; the baseline … time-based flushing enabled actually produces better …=95 \ –mysql-user=root –mysql-socket=/tmp/mysql.sock...
View ArticlePost: Percona Server 5.5.30-30.2 rerelease fixes non-restart issue
… instead of failing or returning immediately if there is a transaction that executed a query which opened that table. Bug fixed… Percona Server for MySQL 5.5.28-29.3 which could cause a server to hang...
View ArticlePost: Percona XtraBackup 2.1.0 'release candidate' for MySQL available for...
… that are caused by the log records in the transactional log being overwritten before they are copied by the log copying thread. Percona XtraBackup now stores the GTID value in the...
View ArticlePost: Percona XtraBackup 2.0.7 for MySQL available for download
… that are caused by the log records in the transactional log being overwritten before they are copied by the log copying thread. Percona XtraBackup…_info when doing the backup of MySQL and Percona...
View ArticlePost: Percona Server for MySQL 5.5.30-30.2 now available
… instead of failing or returning immediately if there is a transaction that executed a query which opened that table. Bug fixed… Percona Server for MySQL 5.5.28-29.3 which could cause a server to hang...
View ArticlePost: Follow these basics when migrating to Percona XtraDB Cluster for MySQL
Galera/Percona XtraDB Cluster (PXC) for MySQL is a hot thing right now and some users jump … to go through these basics. log_slave_updates is REQUIRED You need to have log_slave_updates enabled on the...
View ArticlePost: Percona Server 5.6.11-60.3 first Release Candidate now available
…alignright” width=”247″] Percona Server for MySQL version 5.6.11-60.3….3 release notes. Bugs Fixed: Transaction objects are now allocated calling calloc… if changed page tracking is enabled. Bug fixed...
View ArticlePost: Replication in MySQL 5.6: GTIDs benefits and limitations - Part 1
…Transactions Identifiers are one of the new features regarding replication in MySQL 5.6. …mysql> show slave status\G [...] Slave_IO_Running: No Slave_SQL_Running: Yes [...] The error log … # Slave...
View ArticlePost: Percona Server 5.5.32-31.0 now available
…script had the datadir hardcoded to /var/lib/mysql instead of using my_print_defaults function to…I/O error if changed page tracking is enabled. Bug fixed #1184517. Fixed the compiler warnings …t be...
View ArticlePost: Changing an async slave of a PXC cluster to a new Master
…relay log and, if it has, then we know that the Galera transaction seqno…cluster has progressed further: [root@node2 mysql]# mysql -e “show global status like ‘wsrep_last_committed’”…logs (if enabled)...
View ArticlePost: tpcc-mysql: Simple usage steps and how to build graphs with gnuplot
…buffer_pool_size = 256M option enabled and second one with innodb_…mysql test ./tpcc_start -h127.0.0.1 -dtpcc1000 -uroot -p -w20 -c16 -r10 -l1200 > ~/tpcc-output-ps-55-bpool-256.log…transactions“,...
View ArticlePost: Crash-resistant replication: How to avoid MySQL replication errors
… on the slave, the transaction and update of the relay-log.info file was committed to the Slave relay log, which didn’t… enable innodb_recovery_update_relay_log on the slave. Set it to...
View ArticlePost: Virident vCache vs. FlashCache: Part 2
… pattern when looking at transaction latency; the baseline … time-based flushing enabled actually produces better …=95 \ –mysql-user=root –mysql-socket=/tmp/mysql.sock...
View ArticlePost: How to create/restore a slave using GTID replication in MySQL 5.6
… is that if you want GTID support log_slave_updates will need to be enabled in slave server and the performance impact…. MySQL keeps two global variables with GTID numbers on it: gtid_executed: it...
View ArticlePost: How InnoDB handles REDO logging
…and throughput – The transaction log. The InnoDB transaction log handles REDO logging, this is …log at all, your transaction will never complete. Both the MySQL configuration and hardware will affect...
View ArticlePost: Auditing login attempts in MySQL
…logs. General Query Log The first option is the General Query Log. Let’s see an example: Enable the log: general_log_file = /var/log/mysql/mysql.log general_log… 14 UPDATE_COMMANDS: 103...
View ArticleMySQL Limitations Part 1: Single-Threaded Replication
I recently mentioned a few of the big “non-starter” limitations Postgres has overcome for specific use cases. I decided to write a series of blog posts on MySQL’s unsolved severe limitations. I mean...
View ArticleMySQL Limitations Part 2: The Binary Log
This is the second in a series on what’s seriously limiting MySQL in certain circumstances (links: part 1). In the first part, I wrote about single-threaded replication. Upstream from the replicas is...
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