Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 6

Displaying posts with tag: Jervin Real (reset)

Recover orphaned InnoDB partition tablespaces in MySQL
+0 Vote Up -0Vote Down

A few months back, Michael wrote about reconnecting orphaned *.ibd files using MySQL 5.6. I will show you the same procedure, this time for partitioned tables. An InnoDB partition is also a self-contained tablespace in itself so you can use the same method described in the previous post.

To begin with, I have an example table with a few orphaned partitions and we will reconnect each partition one by one to the original table.

mysql [localhost] {msandbox} (recovery) > SHOW CREATE TABLE t1 G …
  [Read more...]
Syncing MySQL slave table with pt-online-schema-change
+0 Vote Up -0Vote Down

I recently encountered a situation in which after running Percona Toolkit’s pt-table-checksum on a customer system, 95% of the table on the MySQL master was different on the MySQL slave. Although this table was not a critical part of the infrastructure, from time to time, writes to the table from the master would break replication. Additionally, this table has about 6 million rows, and running pt-table-sync would take sometime. Rebuilding the slave from backup of the master would not be an easy option as well since the slave acts as an archive where it has a …

  [Read more...]
High Availability with mysqlnd_ms on Percona XtraDB Cluster
+1 Vote Up -0Vote Down

This is the second part of my series on High Availability with mysqlnd_ms. In my first post, “Simple MySQL Master HA with mysqlnd_ms,” I showed a simple HA solution using asynchronous MySQL replication. This time we will see how to leverage an all-primary cluster where you can write to all nodes. In this post I used Percona XtraDB Cluster, but you should also be able to do the same with MySQL NDB Cluster or Tungsten …

  [Read more...]
Encrypted and incremental MySQL backups with Percona XtraBackup
+0 Vote Up -0Vote Down

We’ve recently received a number of questions on how to implement incremental MySQL backups alongside encryption with Percona XtraBackup. Some users thought it was not initially possible because with the default

--encrypt

options with XtraBackup, all files will be encrypted, but alas, that is not the case. This is where the option

--extra-lsn-dir

becomes useful, because it allows you to save LSN (Log Sequence Number) information to another directory and exclude it from encryption, allowing you to …

  [Read more...]
keepalived with reader and writer VIPs for Percona XtraDB Cluster
+1 Vote Up -0Vote Down

This is a followup to Jay Janssen’s October post, “Using keepalived for HA on top of Percona XtraDB Cluster.” We got a request recently where the customer has 2 VIPs (Virtual IP addresses), one for reader and one for a writer for a cluster of 3 nodes. They wanted to keep it simple, with low latency and does not require an external node resource like …

  [Read more...]
Follow these basics when migrating to Percona XtraDB Cluster for MySQL
+0 Vote Up -0Vote Down

Galera/Percona XtraDB Cluster (PXC) for MySQL is a hot thing right now and some users jump right in without enough testing. Consequently, they’re more likely to either suffer failure or issues that prevent them from moving forward. If you are thinking of migrating your workload to Percona XtraDB Cluster, make sure to go through these basics.

log_slave_updates is REQUIRED

You need …

  [Read more...]
Showing entries 1 to 6

Planet MySQL © 1995, 2014, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.