Percona : MySQL open source fork with performance improvements

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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
37 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
77 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
18 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
46 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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64 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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3answers
89 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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9 views

Percona adding node to cluster safe?

I had a cluster with 3 nodes and 2 of them died, leaving only node 1 working, and this is a production environment that cannot stop. Is it safe to re-add one node to the cluster? Thank you
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65 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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56 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
91 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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2answers
407 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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2answers
1k 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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0answers
74 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
83 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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46 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
34 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
149 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
123 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
300 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
776 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
356 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
85 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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185 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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38 views

Percona XtraDB cluster not replying to queries

Since last month, suddenly our percona cluster started to have connection issues as discussed in Percona Cluster Failed with Haproxy : Connection Limit Exceeded question. As @RolandoMySQLDBA ...
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1answer
136 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? ...
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1answer
96 views

Backup/Recovery like barman for MySQL [closed]

I'd like to have a Backup/Recovery tool for MySQL (MariaDB/Percona) servers which has somehow the same features as barman has for postgresql take full backups on a regular basis (xtrabackup, but ...
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1answer
143 views

Percona and MySQL audit

I am trying to audit MySQL commands for users on Percona. Current version of Percona is 55-5.5.22-rel25.2.237.rhel5. The following URL gives guidance, however I do not know how to get it working. ...
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1answer
184 views

MySQL high memory consumption with poor performance for queries, which settings to tweak?

I have a scenario with a rather large database. It is about 3GB and I'm hitting some walls with system resources. For example, here is an example of htop output: You can observe that there are a ...
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3answers
74 views

Find which mysql is running

I have installed mysql 5.5 and percona 5.5 in the same machine. I am not able to identify wheather the running db is mysql or percona. IS there is any way to identify the difference.
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167 views

Percona on 2nd node will not start

I have setup two Vagrant VMs to simulate Percona XtraDB Cluster for our development needs. The first VM comes online just fine, and everything works. However, when I try to start Percona on the 2nd VM ...
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65 views

MySQL to Percona page load time increase?

Page Time: 0.0915s Memory: 5.0191 MB (Peak: 5.4852 MB) Queries (10, time: 0.0037s, 4.1%) After doing a change from MySQL to Percona my Page Time actually increased. Is that just because it lessens ...
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1answer
73 views

Percona xtradb cluster with asynch slaves

I have a Percona xtradb cluster set up with 3 nodes. Node 1 is also set up as a master with an asynchronous slave. When I make an update to Node 1, it is replicated to the cluster as well as the ...
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1answer
413 views

Percona-Cluster: backup and restore procedure

I'm trying to restore a full backup taken from one node of a three-node percona cluster (percona cluster 5.5, galera 2.1, wsrep sst method is rsync, innodb tables only). Backup was taken like this: ...
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1answer
797 views

Trouble setting up a Percona XtraDB cluster on 2 servers

I'm trying to set up a Percona XtraDB cluster on two machines.. but i'm having a terrible time in getting the second machine up and running. I have used this article as a reference, and while it ...
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4answers
256 views

quick rpm install

I am trying to install percona server. This is a test machine and installed packages do not really matter. What all I need to do is install percona mysql server. ...
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1answer
905 views

Percona server won't restar after datadir change

I installed percona from percona repository on a ubuntu 12.04 server which has a solid state drive. I thought i would rather put the datadir on the Solid state drive and put partition on normal sata ...
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1answer
184 views

installing percona mysql on centos [closed]

From where will I get the mysqldump file from /usr/bin of percona mysql server (32 bit centos 5)? Is it available on the web without installing the software? In other words I am collecting all ...
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0answers
115 views

Import large InnoDB table dump

i've a mysqldump ( 1.5G large ) of a table I need to import. The server i bought, which is clean and not under load, takes > 2hours to import it. I read many tweaks i can use to speed up the import ...
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1answer
585 views

HAProxy + Percona XtraDB Cluster

I am attempting to setup HAproxy in conjunction with Percona XtraDB Cluster on a series of 3 EC2 instances. I have found a few tutorials online dealing with this specific issue, but I am a bit stuck. ...
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1answer
163 views

Does the mysql Client API Library version have to match the installed MySQL/Percona server version?

I'm running Scientific Linux 6.3 (binary compaible with Redhat/CentOS/etc..) as a LAMP stack. I've installed Percona server and client v5.5 from the Percona yum repository. However when I run ...
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0answers
25 views

Percona backup to different database name [duplicate]

Possible Duplicate: MySQL: How to backup and restore using different schema name using xtrabackup I'm using percona backup tool Xtrabackup for backing up different MySQL server, right now I ...
2
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1answer
648 views

How to install Percona XtraDB Cluster on x86 server?

I'm going to migrate from MySQL replication to Percona XtraDB Cluster. The problem I'm facing is one node is running on x86, and I cannot install Percona-XtraDB-Cluster-server from the Percona repo ...
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1answer
84 views

Which repo and version of Percona for Natty?

I'm wanting to drop in Percona instead of MySQL (5.1) on my Natty ubuntu server. I've added the keys and the repos. I've added a natty repo, even though it's not supposed to exist and it seems to be ...
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1answer
514 views

MySQL slow query log logging all queries

We have a MySQL 5.1.52 Percona Server 11.6 instance that suddenly started logging every single query to the slow query log. The long_query_time configuration is set to 1, yet, suddenly we're seeing ...
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1answer
2k views

MySQL too many connections during normal conditions (Percona, InnoDB)

We're getting too many connections errors in normal conditions, so I'm assuming it's a configuration issue. Four webservers, not using persistant connections partly because that triggers to the too ...
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96 views

Really slow execution

I own a wordpress installation, and Updated to 3.4.1. After the upgrade, I got a very strange slowdown to my wordpress. After all, I used the define('SAVEQUERIES', true); in my wp-config.php with ...
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2answers
194 views

Installed Percona mySQL on CPanel but getting an error

I installed Percona mySQL on my fresh CPanel server (no databases yet) according to: http://www.ecommy.com/linux/install-...el-environment Everything seemed to be OK and the server also starts fine, ...
2
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3answers
2k views

Percona XtraDB Cluster node recovery

I have been reviewing XtraDB clustering and produced a P.o.C. environment on Openstack using 4 instances, which has fallen over during my resilience testing. Per the pxc documentation: ...
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5answers
7k views

Netcat (nc) traditional package for RHEL 6.x?

I'm trying to use the Percona Apache Monitoring [Cacti] Template for Memcached. They do indeed warn that you can't use the openbsd version of the package and provide a solution for Ubuntu/Debian ...