Percona : MySQL open source fork with performance improvements

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Percona xtradb cluster MASTER MASTER asynchronously

I have setup a percona master-master cluster the same way as detailed here: http://www.percona.com/doc/percona-xtradb-cluster/5.5/features/multimaster-replication.html The document doesn't say but I ...
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18 views

InnoDB “Table xx Is Full” during database alterations

I am running Percona Mysql Server 5.6.14-56 on CentOS 6.3 64bit. Server has plenty ram (96gb) and storage free. File system type: ext4 dev/sda6 ext4 1093623528 56576512 981494148 6% ...
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1answer
16 views

Cacti - Interpreting values for Network statistics

I've downloaded and installed the Percona Linux template. I noticed the values for tx-drop had values of 'm' and 'u' and don't quite understand why I'm getting values of micro and milli. I was ...
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43 views

MySQL backups/Replication using xtrabackup and Native Mysql Replication

This aspect of using Percona Xtrabackup over Native Replication has been in my head for sometime now and I just cant seem to find an answer to this, I am posting this as a last resort seeking advice ...
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1answer
45 views

Percona Server & MySQL server on the same server on different ports

I have MySQL installed from ports, running and listening on port 3306. On the same server I have Percona Server compiled from sources, running and listening on port 3307. Here are the process list ...
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2answers
447 views

Automatic MySQL shutdown is RHEL7

When I execute systemctl start mysql it starts MySQL but I don't get command prompt back, it just stays like that. Database starts normally. After couple of minutes database automatically shutdowns ...
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33 views

Percona connectivity issue, user cannot connect?

I am trying to authenticate a user in percona but I am seeing the error message below each time I try... 2014-09-29 12:43:37 5028 [Warning] The plugin '0' used to authenticate user 'user@' is not ...
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40 views

Percona MySQL and my.cnf (Ubuntu 12.04)

So I am trying to move the database following the directions here: http://stackoverflow.com/questions/11069422/what-to-do-when-mysql-has-no-space-left/11070334#11070334 (option #3 in the long post ...
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1answer
89 views

New nagios/cacti monitoring setup, should I use a dedicated VM?

Currently we have 4 bare metal servers and one small VM server (all running centos6) and I'm looking at setting up monitoring for the Percona MySQL db server and replication slave (bare metal), as ...
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1answer
137 views

Percona slave crashes with “unexpected PLT reloc type”

I have 2 data centers each with a master/slave database running Percona server 5.5.23. For some reason, one of the slave databases crashed with this error: 03:00:40 UTC - mysqld got signal 11 ; ...
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66 views

WSREP galera cluster warning conflict state 7

I have started to use a pxc cluster, after a flow control deadlock I had to kill all but one instance. And now on this single instance I have the below warnings streaming in the log all the time: ...
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87 views

How many incremental backups to keep with Percona xtrabackup?

I'm looking to replace an aging and decidedly suboptimal mysqldump-based database backup strategy with Percona's Xtrabackup. This all looks pretty straightforward, except that I'm wondering: how many ...
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296 views

Percona startup fails: mysql can't access directory for file creation

I found a few questions and suggestions for similiar problem, unfortunately nothing seems to work for me, so please excuse me if this is double (and point to right source)... Server is Fedora Beefy ...
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62 views

Percona MySQL LDAP authentication fails through .NET MySQL connector

Basically, MySQL uses its native authentication, where usernames and passwords are stored in mysql.user table. MySQL authenticates user against the credentials stored in mysql.user table. Our ...
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51 views

remote connect to percona is slow

SOLVED This is the age old mysql issue of skip-name-resolve. Works like a charm. Must have been in my old my.cnf and I forgot about it. I had a fairly large MySql Database and figured I would ...
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1answer
784 views

Percona XtraBackup: Getting an error regarding “Too many open files”, how can I solve this issue?

I'm trying to backup using Percona XtraBackup and getting the following error: [root@ads-dev1 ~]# innobackupex /root/db InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy and ...
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51 views

Mixing percona and mariadb in a galera cluster

Assuming both percona and mariadb runs the same engine (innoDB), can i use them interchangeably in a galera cluster? If it is possible, is there anything I should know before doing it?
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84 views

Does pt-kill from the Percona Toolkit accept multiple --ignore-info options?

I switched over from specifying --match-info parameters on the command line to using a Percona Toolkit configuration file /etc/percona-toolkit/pt-kill.conf. I am running pt-kill as pt-kill --config ...
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2answers
3k views

can't install mysql-devel on centos 6.5

I need mysql-devel package to be installed on my CentOS 6.5 running Percona 5.5 (already installed & running). When I try to install the devel package like this: yum --enablerepo=remi install ...
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66 views

PHP-FPM slowlog and Mysql lost connection

I was having an issue with PHP-FPM and mysql. When I needed to process an input file that would generate several selects/inserts/updates for each line, it would stop after approximately 60s with ...
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269 views

my.cnf doesn't work in my server

now i am using percona server 5.6 on CentOS 6.5. I wanna change query cache setting. I tried to change setting /etc/my.cnf. but it didn't applied. To investigate whether my.cnf is read correctly,all ...
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505 views

How can I resolve libmysql with Percona now that they've caused a yum conflict with their packages?

A script I wrote a few months ago has provisioned probably 100 or more virtual servers with a LAPP stack (Linux Apache Percona PHP). Recently, the following line is failing because yum has ...
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64 views

MySQL SSL Problems

I need to configure SSL for a MySQL server. I've read all of the directions for doing self-signed certs but it's preferred that I sign and use the certs from a different CA running AD Certificate ...
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1answer
94 views

Percona UDF - FUNCTION MURMUR_HASH does not exist

We have a 5.5.28-29.3-log mysql master that has the percona UDFs installed including murmur_hash. We installed mysql on new host but I can't seem to find where to get the UDFs from. This doc suggests ...
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74 views

Unexplained excessive database response times - very powerful hardware, tiny database

I've a strange problem that's repeatedly troubled me across 3 different servers now. The problem Please see the graph from NewRelic showing the huge amount of time spent in the database. The ...
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1answer
371 views

Duplicating data between two Percona Xtradb clusters using MySQL replication

We currently have a 3 node Percona Xtradb cluster running in a single data center. We want to add fault tolerance in case of disaster to prevent reliance on a single data center and synchronize our ...
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1answer
1k views

MySQL Socket configuration issue in my.cnf

I've got an issue that's causing very long "time in database" in my application. The DB is Percona MySQL 5.5.35. The application works perfectly, and can read/write from the database just fine. The ...
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1answer
656 views

Percona Xtrabackup incremental backup based on prepared full backup

I want to create an hourly backup of our MySQL database to a staging system using Percona XtraBackup. Is it possible to prepare the $BACKUPBASE and then use this prepared backupbase as base for the ...
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1answer
135 views

Cannot open './/ib_buffer_pool' for reading: No such file or directory

I've realised that my Percona DB which has several InnoDB tables doesn't actually have InnoDB buffer pool running as it wasn't specified in the my.cnf. I had a buffer pool size specified of 256MB, ...
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3answers
136 views

What could cause these (see graph) spikes in DB response times?

I've a LAMP stack running Percona MySQL. Via New Relic, I'm monitoring/tweaking/tuning my new server ready for it to be used live. Something that's irritating me though, is that I get periodic ...
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127 views

Force execution of a chef script before the first one finishes

Following is section of code that is creating the problem for me. Everything works fine but then in order to upgrade percona, I need to run the 'mysql_upgrade' step while the 'mysql_safe' step is ...
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740 views

Heavy production MySQL/Percona Database in openvz container

So I'm currently running a MySQL 5.1 database, with the following specs: Proc: Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz RAM: 64 Go disks: 2x 100 Go SSD (RaidSoft) I'm planning to migrate my ...
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1answer
209 views

Percona on EC2 ephemeral storage (part of XtraDB cluster)

We have a MySQL DB of roughly 100GB and want to move it into EC2. EBS volumes seem fairly slow for running MySQL databases (even with provisioned IOPS) and although we could use RAID10 to improve this ...
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82 views

mysql - measure amount of write

System : Centos 6.4, PerconaDb/MySQL 5.5.31 Im running relatively small mysql database with some 30 databases, total amount of 12Gb, but heavy on reads, updates and writes (texts, posts, user data ...
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1answer
868 views

installing XtraBackup with libmysqlclient.so.18

Current situation I'd like to install XtraBackup on my VPS (Centos 5) where my main database is running. During the rpm install it told me that it misses a dependency called perl(DBD::mysql). When I ...
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1answer
1k views

Can't connect to local MySQL server through socket '/opt/local/var/run/percona/mysqld.sock' [closed]

I have installed percona server using using macports on my mac machine however I am running into the socket error above as you can see below: Sauds-MacBook-Pro:percona jini$ sudo ...
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2answers
2k views

new Percona XtraDB nodes unable to join cluster

I have a four node Percona XtraDB cluster. Each night, one node shuts down for a backup and subsequently rejoins the cluster. This has run fine for quite some time now. Last night, the backup node ...
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5k views

Installing a third party application package on CentOS 6.4 fails due to missing dependencies libcrypto.so.10 and libssl.so.10

This is a Canonical Question about OpenSSL binary compatibility issues between Red Hat Enterprise Linux (and its derivatives) 6.4 and 6.5. This issue applies to a wide variety of third party ...
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1answer
563 views

MySQL memory usage - Periodically need to run FLUSH TABLES or memory usage keeps growing with large-pages turned on

After switching our rather memory + physical core rich database server to large-pages, we have noticed a small issue. The memory usage almost looks like there is some sort of memory leak. But ...
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2answers
275 views

Percona 5.6 not starting automatically after server reboot on Ubuntu with Virtualmin

I've got a new install of Ubuntu 12.04 + Virtualmin. I've upgraded from the default mysql 5.5 to Percona 5.6. Everything works except for one problem: when the server reboots, Percona is not ...
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162 views

How to compile MySQL (Percona) with jemalloc installed under custom prefix?

My jemalloc is installed under /opt/jemalloc, how to compile MySQL/Percona with the support of jemalloc? The standard option is cmake . -DCMAKE_EXE_LINKER_FLAGS='-ljemalloc' -DWITH_SAFEMALLOC=OFF ...
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1answer
41 views

Dev mysql node with Percona

I have been tasked with creating a Development mysql instance, We currently have a 7 node Xtradb cluster, is there any way to have this node a few hours behind, or not allow replication back to the ...
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1answer
398 views

Percona: Got an error writing communication packets

Since a few days, two of our php-applications (symfony2) are reporting the following errors in mysql-logs: [Warning] Aborted connection 253 to db: '$appname' user: '$appname' host: 'localhost' (Got ...
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1answer
292 views

mysqld: unrecognized service after installing Percona mySQL

Fresh cloud server running Centos6. Trying to install latest Percona $ sudo rpm -Uhv http://www.percona.com/downloads/percona-release/percona-release-0.0-1.x86_64.rpm $ sudo yum install ...
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1answer
1k views

MariaDB / MySQL galera cluster nodes won't join

I'm setting up a MariaDB Galera cluster and I can’t seem to get the nodes to join each other. They both start up without errors but never seem to join, the status is always disconnected: MariaDB ...
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2answers
3k views

MariaDB Cluster vs Percona Cluster for MySQL

What are the advantages and and disadvantages between the two? I've only been able to find information on these two implementations without any specifics on clusters. I'm currently implementing a ...
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1answer
845 views

PHP fails to load MySQL modules - “libmysqlclient.so.18” error

I'm installing a new CentOS 6.4 box, to move my websites over from my current 5.9 box. I've ended up with Apache 2.2.4, PHP 5.4.16 (via "powerstack" repo), and Percona 5.6.13 (via percona's own ...
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1answer
327 views

installing Percona XtraDB Cluster on Ubuntu 13.04

So, a bit of explanation of the big picture: I am trying to get multiple PXC instances running on a single machine, replicating via Galera to each other. I am running Ubuntu Server 13.04 amd64 in a ...
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372 views

Recurring locks and slowdowns on a Percona XtraDB Cluster

I have 5 dedicated servers (identical machines: 32 cores, 96GB of RAM, SSD drives in RAID and gigabit ethernet link) configured with Percona XtraDB Cluster. There's a recurring problem causing a ...
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386 views

syntax error, unexpected $end, expecting FTS_TEXT or FTS_TERM or FTS_NUMB or '('

I have many messages like the following in /var/log/mysqld.log What does it mean? ...