Questions tagged [percona]

Percona : MySQL open source fork with performance improvements

Filter by
Sorted by
Tagged with
0
votes
1answer
138 views

MySql Galera Multi site high availability

We have a datacenter with 3 percona glera nodes We have a store that wants to be in sync with our datacenter(multi master) our store's internet connection is not reliable ( may be down for 30 min), ...
1
vote
1answer
232 views

Percona-Server: slow TokuDB queries after upgrading from 5.6 to 5.7. ANALYZE TABLE doesn't resolve the problem

After upgrading from Percona-TokuDB 5.6.29-76.2 to 5.7.19-17 we see some very slow queries on some tables without primary keys, but multiple non-unique indexes. The box we migrated to is pretty well ...
0
votes
0answers
16 views

Percona MySQL Server: Unrecognized network connections

I recently setup a basic two-node master/slave replication database using Percona's MySQL Server version 8.0.25-15, and during testing I ran pt-summary and noticed an IP I don't recognize in the "...
1
vote
1answer
191 views

Percona Server 5.6.40 restarting with singal 11

We recently migrated our mysql to new hardware and it was running in slave mode for 15 days. We made it the master 11th June. On 13th June it restarted for the first time with signal 11. Stacktrace ...
2
votes
1answer
1k views

Flush Host Connection Blocked, but some connections allowed

We are running Percona MySQL 5.6.30. We've had an issue where a PHP script on a different host was reporting an issue connecting to the database: Database may be down : SQLSTATE[HY000] [1129] Host ...
2
votes
1answer
422 views

Slow ranking values in MySQL

I have a table of around 30 million retail products, with various INT columns that describe sales counters and pricing at different retailers. I'm supposed to display well over 70 different rankings ...
0
votes
2answers
886 views

High "Pending normal aio writes"

During daily batch operations (mass delete/upsert operations), regular throughput is sometimes affected, e.g. operations such as a single lookup on a PK or a small range (7 rows examined, 1 row ...
0
votes
1answer
92 views

Need help with some recovery

So i've gone and did something terribly wrong out of haste and not thinking properly. I have a PXC (percona cluster. I guess mysql cluster with Galera?) running with just 1 one being bootstrapped (...
2
votes
1answer
169 views

MySQL users not visible after import

I have a Percona MySQL database 5.6 running in a linux machine. I have created new users called test1 and test2. What I did was I imported mysql database from my test setup to this new setup. After ...
0
votes
1answer
2k views

Error: ERROR 1047 (08S01) at line 6955: WSREP has not yet prepared node for application use

While restoring a dump from a CloudSQL instance into a node of a Percona xtradb cluster, I am getting this error. The line 6955 in the .sql dump file is in bold below: DROP TABLE IF EXISTS `...
0
votes
1answer
389 views

Percona pt-table-checksum output is in infinite loop "Waiting for the --replicate table to replicate"

We have following Multi master replication scenario. We are using Mariadb 10.1.34 and percona 3.0.11 Master: Name: db-master1 (192.168.14.5) Slave: Name: db-slave2 (192.168.15.5) Replica ...
0
votes
1answer
216 views

Is it safe to use pt-online-schema-change in a multimaster environment?

I have 2 MySQL servers with row-based replication between them. Both of them are masters and slaves for each other (active-active master-master setup). If I understand it correctly pt-osc creates ...
0
votes
2answers
840 views

how to make sure pt-sync-table data is the latest?

the first step is to checksum difference and record into percona.checksum table pt-table-checksum h=xx,P=xx,u=xx,p=xx method=dsn=h=xx,D=xx,t=xx --databases=kobe the second step is to print the ...
1
vote
1answer
147 views

Does wsrep_cluster_address only accept the intranet IPs?

I was installing Percona XtraDB Cluster with 3 nodes. Each node has a unique Internet IP address. Following the docs Quick Start Guide for Percona XtraDB Cluster, I got the first node running but ...
0
votes
1answer
677 views

InnoDB Buffer causing a lot of deadlocks and connection/client timeouts

I have a PXC cluster (5.7) with three nodes running on CentOS 7 VMs, each with the following system info: mysql_db# free total used free shared buff/cache ...
2
votes
1answer
2k views

Percona mysql xtradb cluster doesn't start properly and node restarts don't work

tl;dr When starting a fresh percona cluster of 3 kubernetes pods, the grastate.dat seq_no is set at -1 and doesn't change. On deleting one pod and watching it restart, expecting it to rejoin the ...
-1
votes
1answer
40 views

InnoDB: Assertion failure on executing select Query - MySQL 5.7.31

I am using pt-archiver for daily archiving of tables, but while selecting data from one tables I am getting following error and it restart mysql instance 2021-07-07 13:21:17 0x7fe0dffdc700 InnoDB: ...
0
votes
0answers
58 views

Importing A Database Into MySQL Has A Cluster System

I have a big issue. I want to import a database to mysql-server in a Centos 7 system. But there is a cluster structure on the servers. I set pxc_strict_mode=ENFORCING in wsrep.conf file. I have not to ...
0
votes
2answers
38 views

Connect two Percona XtraDB Clusters in two data centers

I have been trying to figure this out the past couple of weeks. We used to have a five-host Percona cluster at different providers. When it started acting up I read that it is a bad idea to have ...
0
votes
1answer
251 views

Can't bring up slave from ec2-consistent-snapshot due to uncommitted prepared transaction

I'm struggling with bringing up a slave instance using a snapshot created by ec2-consistent-snapshot, in my log it's describing the fact that an unprocessed transaction exists, but isn't that what ec2-...
0
votes
1answer
274 views

Percona XtraDB cluster backup solution

We have a 3 node percona xtradb cluster and two slaves attached to it. One of the slaves we want to use it for taking backups. We have GTID based replication setup between the slave and the Xtradb ...
0
votes
1answer
10 views

Percona MySQL: Restore incremental backup to a new server

I know it is possible to set up a new database instance on a new server, using a full backup that has been prepared. This is useful for several things, not least if your server has failed completely; ...
4
votes
1answer
881 views

Full database backup using xtrabackup stream

I'm new to Percona XtraBackup. I've been trying to perform a full backup stream from my local ( test server around 600GB ) to remote server. I just have some questions and I need guides, and I think ...
0
votes
1answer
472 views

Suddenly a massive amount of binlog files

I've seen a sudden increase of binlog files, very large in number and size, in all three nodes of a Percona XtraDB cluster: -rw-rw---- 1 mysql mysql 1,1G 19 oct. 16:11 binlog-32.000001 -rw-rw---- ...
0
votes
1answer
269 views

Does Percona Xtrabackup support RedHat release 4

I downloaded Percona's Xtrabackup rpm file for RedHAT. I attempted to install but hit into an error. The error seems to point to missing dependencies and libraries. I have no issue with RedHat 6 OS. I ...
0
votes
2answers
605 views

Optimization causes tmpdir to fill up with 'deleted' file handle

Using Percona 5.6.34-79.1. Storage Engine is InnoDB. One of the table to be optimized is 300Gb in size. tmpdir is a separate partition, and datadir is separate. datadir has 500Gb of space, so ...
1
vote
1answer
126 views

ERROR 1180 (HY000): Got error 5 during COMMIT

We're using Galera cluster and I'm running below statement to make a new table: create table tab2 select distinct id , report from my_table ; It runs for sometime and after that it fails/cancel ...
5
votes
1answer
7k views

How to prevent "ibdata files do not match the log sequence number"?

I am dealing with a very large set of databases that are all innodb. I've enountered this on mysql restart too many times for my comfort: ibdata files do not match the log sequence number But I've ...
1
vote
1answer
426 views

how to setup percona pmm monitoring of percona 5.7 in docker container

I want to monitor percona running in docker with the percona monitoring and management client. I have percona monitoring and management installed, running and monitoring other percona instances (...
0
votes
1answer
379 views

Insert into table select - Replication lag - Percona Server 5.6

I have two MySQL instances (Percona server 5.6.31) in Master-Slave replication setup. I have set the below configuration: ROW based replication is set. Transaction Isolation is set to read-committed....
0
votes
0answers
105 views

MySQL undo logs not truncating

I have MySQL Percona version 5.7, with 3 undo logs, but I don't know why truncating logs is not working. I enabled innodb_undo_log_truncate, decreased innodb_purge_rseg_truncate_frequency to 32 show ...
3
votes
2answers
761 views

Percona MySQL 5.7 | XtraBackup 2.4 - xb_load_tablespaces() failed witherror code 11

I am attempting to upgrade MySQL from 5.6 to 5.7 and everything seems to be working, but when I try to run xtrabackup I am now getting this error: InnoDB: Allocated tablespace ID 12 for percona/...
1
vote
1answer
427 views

Percona/MySql Table does not exist after innobackupex restore on Vagrant Ubuntu 16.04

This question is cross posted here from stack overflow at the suggestion of stack overflow commenters (https://stackoverflow.com/questions/47086329/percona-mysql-table-does-not-exist-after-...
0
votes
1answer
566 views

Is it possible to setup MySQL replication through ProxySQL?

We currently have replication working through haproxy so that if a node goes down replication continues with one of the other nodes. We're trying to completely replace haproxy with proxysql. Due to ...
0
votes
1answer
53 views

truncate table in mysql 8.0 is slower than older version

I have few hundreds of tests which use mysql. I was using Mysql 5.7 (percona) and I changed it to Mysql 8.0 . My problem is that before every test I truncate ALL my tables. This was fine with 5.7 but ...
0
votes
1answer
140 views

"Percona-XtraDB-Cluster prohibits use of ALTER command on a table (<example>) that resides in non-transactional storage engine"

I installed a Percona XtraDB cluster with pxc_strict_mode set to ENFORCING, and am trying to import databases from non-Galera MariaDB servers. This works fine for some databases, by dumping them via ...
0
votes
0answers
10 views

percona cluster victim thread on duplicate key updates

Recently, I've been getting this in the log and its creating chaos when not addressed. I totally understand the error, but what are the typical sources of this showing up in the cluster. I've been ...
9
votes
2answers
12k views

What is the optimal solution for storing real time time-series in MariaDB / MySQL?

Use case: A measurement creates a given number of images. For each image we need to store a small set of quality indicators (floats, doubles) along with an image integer [1 ...N], a timestamp and one ...
3
votes
2answers
6k views

Can I use a Percona Xtrabackup backup to restore a single table?

I've been playing around with the Xtrabackup tool for a month now, and I got to admit : it is really powerful ! I'm still testing it to backup database servers between 5 and 150 GB and the backup/...
1
vote
1answer
118 views

MySQL 8.0.20 - Master Replica scheme, increasing delay between Source and Replica

We have a Source Database of about 1TB, and a Replica on another server (similar architecture). We have setup Master Slave replication and delay between Master and Slave is always growing since. ...
0
votes
1answer
190 views

Can't restore master/slave replication from Percona backup (slave server)

A slave is restored from a master backup created with Percona xtrabackup On the master binlog is set to expire in 14 days and this backup is less than 24 hours old my.cnf (master) expire_logs_days = ...
1
vote
0answers
131 views

Proxysql setup for Percona PXC Multimaster cluster

I have a clean Ubuntu lab setup for PXC Cluster and Proxysql (each a separate VM)and i'm seeing this issue (error below). Is there a specific installation that needs to be followed for PXC cluster? I ...
2
votes
2answers
7k views

Percona - Unable to start mysql after restart

I just configured a percona xtradb cluster in ubuntu with 2 node. This is what I did. launched 2 new servers. Installed percona cluster on both nodes. Stopped mysql on both nodes. On server1: /...
1
vote
3answers
241 views

Can I disable binlogs to save space temporarily

I am using percona mysql 8. I do not use any type of replication, but I read that binlogs are useful for data recovery. I would like to turn of binlogging and flush them while I run pt-online-schema-...
0
votes
0answers
103 views

MySQL 5.7 (Percona Server) PAM LDAP authentication from Workbench 8.0 on Windows

I have a server running Percona Server 5.7 and enabled PAM LDAP authentication. I can connect with LDAP user from: mysql client MySQL Workbench 8.0 on Linux (Ubuntu) with dialog.so plugin copied from ...
0
votes
0answers
34 views

Will Federated engine work with pxc cluster

I'm a bit new to MySQL specific settings and I can't find any hint/insight to this question. I have several Federated tables that work great for their current purpose, the rest of the database is in ...
0
votes
0answers
41 views

Percona PMM Dashboards in Vanilla Grafana Crash

I have a vanilla non-PMM flavoured Grafana + Prometheus setup. It seemed really silly to install a completely different appliance and setup to get Percona PMM Dashboards in my Grafana. So back in ...
2
votes
1answer
8k views

Of the multiple cnf files in /etc/mysql/conf.d/ dir, which would be the last one to be read (and will eventually take precedence)?

For some reasons (and only for some days to come) we are going to have 2 cnf files in /etc/mysql/conf.d directory, apart from the default one /etc/mysql/my.cnf. Now I know this can be disastrous, and ...
1
vote
1answer
29 views

mysql percona 5.7 not releasing memory

we are using percona mysql 5.7 version. MySQL not releasing the memory after operation complete. we are very much grateful if anyone can guide us to resolve issue. Thanks
1
vote
0answers
57 views

Xtrabackup 8.0 Error

I'm using Percona MySQL 8.0.20 running on Ubuntu 18.04 on an AWS ec2 m5.2xlarge instance. The Xtrabackup version being used is 8.0.14. While testing the restore process, I'm getting the error as ...

1
2 3 4 5
7