June 19, 2013

Post: Choosing a MySQL HA Solution - Post-Webinar Q&A

… configure the slave to only replicate a specific database, a set of databases, or specific tables; you can also configure the slave to replicate everything EXCEPT a specified set of databases and tables. With this method, every event is… can also use the slave_compressed_protocol option in /etc/my.cnf if bandwidth is a concern. If you’re thinking about…

Post: MySQL and the SSB - Part 2 - MyISAM vs InnoDB low concurrency

… 5.6.10, both with default settings using only the InnoDB storage engine.  In my testing I discovered that innodb_old_blocks… the database optimizer. The SSB benchmark consists of four sets of queries. Each set is known as a “flight”. I have labeled… built the keys with sort via ALTER TABLE ENABLE KEYS. my.cnf [mysqld] datadir=/mnt/mysql56/data basedir=/usr/local/mysql socket…

Post: Multicast replication in Percona XtraDB Cluster (PXC) and Galera

… and synchronous clusters I’ve seen a lot of people setting up clusters with 3-6+ nodes on 1 Gbps networks… to our my.cnf: wsrep_provider_options = “gmcast.mcast_addr=239.192.0.11″ If you already have wsrep_provider_options set, add… regular IP of the node. Typically I just set the wsrep_node_address setting on each node if this IP is not…

Post: Replication in MySQL 5.6: GTIDs benefits and limitations - Part 2

… event executed: s1> show slave status\G [...] Executed_Gtid_Set: 219be3a9-c3ae-11e2-b985-0800272864ba:1, 3d3871d1-c3ae-…the server UUID can be read in the auto.cnf file in the datadir). So the last executed …is a solution of course, but very poor in my opinion: look for the binlog file/position of …

Post: Disconnecting a replication slave is easier with MySQL 5.5+ (RESET SLAVE vs. RESET SLAVE ALL)

… all versions, ban master-user, master-host and master-password settings in my.cnf, this may cause huge problems (it’s anyway no…, master-password, master-host and master-port in the my.cnf file? # cat my.cnf [...] master-user=rsandbox master-password=rsandbox master-host=127… is probably not what you want. So never set master-xxx variables in my.cnf! From MySQL 5.5 Starting with MySQL 5…

Comment: Investigating MySQL Replication Latency in Percona XtraDB Cluster

setting regarding to memory allocation. So we did some memory allocation setting in my.cnf file. On first day after doing memory allocation setting in my.cnf… [Percona XtraDB Cluster (GPL) (5.5.30)] (InnoDB Engine) PHP My Admin – 5.3.3 Hardware: Node:2 CPU = Quard Core…

Post: Percona Server 5.5.30-30.2 rerelease fixes non-restart issue

… Python clients when plugin-dir option was set in the [client] section of the my.cnf. Bug fixed #1155859 (Sergei Glushchenko). Fixed the…

Post: Percona XtraDB Cluster 5.5.30-23.7.4 for MySQL now available

… file (my.cnf). Bugs fixed #1160047 and #1086978 (Raghavendra D Prabhu). Donor node would run XtraBackup indefinitely when xtrabackup tmpdir was set up…

Post: Percona Server for MySQL 5.5.30-30.2 now available

… Python clients when plugin-dir option was set in the [client] section of the my.cnf. Bug fixed #1155859 (Sergei Glushchenko). Fixed the…

Comment: MySQL 5.5 and MySQL 5.6 default variable values differences

… tuned a few variables up with confidence since 5.6 sets them higher by default. Another minor correction: innodb_auto_extend… the mistake of copying the directive and using it in my.cnf which caused some trouble with a restart. :-(