Questions tagged [percona]

Percona : MySQL open source fork with performance improvements

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27 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 = ...
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Percona Mysql 8.0.19-10 Slave SQL: Could not execute Update_rows event on table

we have this architecture: 3 db nodes master-master cluster replication, 1 slave db node (readonly, on offsite) without replication for backup purposes with binlogs application. A db offline datadir ...
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9 views

Percona configuration file parameters not recognized

I have a Percona server active and i want to override some parameters but they are not rocognized I am on Debian 9 /etc/mysql/my.cnf !includedir /etc/mysql/conf.d/ !includedir /etc/mysql/percona-...
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Mysql 5.7 slave poor performance with 5.6 master

We recently reinstalled 3 of our mysql servers running in master slave with percona 5.7 and ubuntu 18.04 instead of oracle linux 7. These servers are currently connected to a mysql 5.6 master. And ...
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1answer
68 views

My innodb new rows disappear mysteriously

I used percona server 5.7 as my database on AWS. The problem is there's sometimes rows disappear mysteriously without a clue. My Backend using Node.JS already got inserted id from auto increment but ...
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1answer
74 views

Get rid of debian-sys-maint instead of root in MySQL 8

We've recently upgraded from MySQL Percona 5.7 to 8 and we're in the phase of transitioning from mysql_native_password to caching_sha2_password. As far as I understand, the only way to upgrade the ...
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55 views

Does mcafee mysql audit plugin not work on Percona Server 5.7.27-30?

My environment is 5.7.27-30-log Percona Server on CentOS 7.4. When I installed this plugin (audit-plugin-percona-5.7-1.1.7-866), I got the following error messages. mysql> INSTALL PLUGIN AUDIT ...
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1answer
39 views

Can not stop mysqld after database upgrade

I have an old Galera cluster (MySQL 5.5) that I am upgrading to Percona XtraDB (MySQL 5.7) on Ubuntu 18.04 LTS. I have successfully imported the database with xtrabackup and synced the cluster - so ...
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1answer
2k views

Constant problems with php-fpm, CPU usage 100% non-stop (No visitors even)

We are running two servers one for the application and one for the DB and some other software to keep the load off from the application's server, we are running CentOS and the latest version of PHP (7....
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214 views

Mysql docker on centos not working

I use centos as server and I use docker-compose like: mysql: build: ./DockerFiles/Mysql ports: - ${LOCAL_PHP_IP}:${MYSQL_PORT}:3306 privileged: true environment: ...
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68 views

What is the alternative for innodb_track_changed_pages in Debian 10/MariaDB 10.3

So we have been using Debian 9 with MariaDB 10.1. For faster backups (total DB size across three DBs is > 1TB) we have enabled innodb_track_changed_pages. However, that feature has gone away on ...
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1answer
65 views

changing from percona to mariadb without losing data

i have a production server running with percona. but i don't really like it anymore and i'm more used to mariadb. can i change from percona to mariadb without losing any data or having compatibility ...
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1answer
417 views

automysqlbackup failes with ERROR 1045 (18000) Access denied … after password change

I have two almost identical ubuntu database servers, and automysqlbackup was happily running on both of them on using Percona 5.7 databases. On one of them I have changed the database root password....
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1answer
178 views

percona toolkit pt-kill command --ignore-state flag

I have the following pt-kill daemon setup. It works but doesn't kill a query such as SELECT GET_LOCK(300). If I remove --ignore-state 'User lock' will this fix it? sudo /usr/bin/pt-kill --ignore-...
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2answers
353 views

Tune Percona Server 5.7

I am using a 4 core ubuntu cloud server with 8gb and ssds. There I have only one database for a Magento store which is about 2GB size. Last month after some changes I made it seems that database ...
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132 views

Fastest way to move Innodb database from one server to another

I understand I can use mysqldump or xtrabackup to move InnoDB from one db to another. Considering I am okay with server down time, are there better way to move InnoDB database? I have tried copying ...
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2answers
385 views

Increasing the number of connections MySQL 8 can handle (Debian 9 server) and auto restart event scheduler

I have a Debian 9 server (12 CPUs, 80GB of RAM), running Percona server for MySQL 8.0, about 1100 clients per second, the load is not very high around 0.3 to 2.30 Latested numbers from show engine ...
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403 views

Enabling Encryption at Rest for MongoDB Generates Error

Running Percona Server for MongoDB server version: v3.6.8-2.0. I am attempting to enable encryption at rest using the procedure outlined in the following: https://www.percona.com/blog/2018/11/01/...
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2answers
3k views

Mysql backup of remote server in local machine using percona xtrabackup

I have percona xtrabackup installed in my ubuntu client machine. My local machine IP address is 192.168.0.100. The database that i need to backup is in 192.168.0.200. Is it possible to do the backup ...
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3answers
4k views

Entire proxmox Xen Node has grey question marks + database container gone

Firstly, i've recently taken on the management of a proxmox cluster which I have had no experience managing previously (i'm completely new to cluster management, but not too bad at linux). pve-...
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1answer
124 views

How to monitor mysql status variables and push to slack?

I've been trying to find a free way to monitor mysql status variables and push a slack notification when certain variables hit a threshold (ie: large number of connections). At the moment, all the ...
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2answers
604 views

Nginx: location with proxy_pass, including uri (Percona PMM)

I'm trying to setup a proxy with Nginx for Percona Monitoring and Management (PMM). I'm using their public demo site for a testing purpose. The goal is to expose PMM interface via URL like https://...
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1answer
237 views

How to run pt-kill on CentOS Server [closed]

So, I have downloaded pt-kill file with: wget percona.com/get/pt-kill Now, I tried running it, but everything is not working? How do you run this file?
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495 views

Recover a failing node on Percona 5.5.41-37.0-55

I have a 3 node percona cluster of where 1 of the nodes has, because of a server crash, InnoDB log sequence problems. 180425 17:32:53 InnoDB: Error: page 151555 log sequence number 12431827692 ...
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304 views

How do I determine what is causing MySQL (Percona server) to crash on Linux

I am running the Percona version of MySQL Server v5.6 and every few days the MySQL seems to crash and then automatically restart itself. How can I work out what the reason is for the crash? I've seen ...
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327 views

Having trouble updgraring mysql (Obsoleted By: Percona … )

I'm trying to upgrage mysql 5.1 to 5.5. Following this link step by step : https://www.zerostopbits.com/how-to-upgrade-mysql-5-1-to-mysql-5-5-on-centos-6-7/ But yum -y update mysql* gives me errorrs....
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1answer
517 views

Connect MySQL using SSL only with the --ssl-ca option

I copied the ca.pem from server (Percona default 5.7 Ubuntu deb) able to make a secure connection with mysql --ssl-ca=/var/lib/mysql/ca.pem -u root I find that the options --ssl-cert and --ssl-key ...
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1answer
352 views

How to set config file to percona-mongodb

I have an percona/percona-server-mongodb image of mongo. I tried to mount my mongod.conf. How to set config and run mongo with config file? docker run --name mongo1 -v /opt/mongo/mongod3.conf:/etc/...
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287 views

mysql to percona replication

Recently my employer was acquired by a bigger company and the new CTO wants us to move to their software stack. We have MySQL as the DB server, and they have Percona. So... what are the option to do ...
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1answer
689 views

Initial Xtradb Cluster setup — each node comes up isolated

I'm setting up a percona-xtradb-cluster-57 (3 nodes) on Ubuntu 16.04. They are to communicate using a private network, 10.254.10.101 through 10.254.10.103. When I follow the instructions on Percona'...
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2answers
3k views

centos yum remove mysql will remove core components

Centos 7 x64, mysql-community 5.7 is installed from mysql57-community repo. I am in the process of switching from mysql to percona. However, the first step is scary when I try to uninstall mysql. ...
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1answer
1k views

mysql tries to connect to localhost at startup, [Note] Access denied for user 'root'@'localhost' (using password: NO)

When I start/restart the mysql service, I always see this row in the log: 2017-07-19T17:35:02.379166Z 5 [Note] Access denied for user 'root'@'localhost' (using password: NO) What is it trying to ...
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1answer
194 views

how to speedup SELECT BENCHMARK(1000000,ENCODE('hello',RAND()));

I would like some ideas for speeding up the the query below: SELECT BENCHMARK(1000000,ENCODE('hello',RAND())); Currently, I've been playing around with the my.cnf option and I can execute this in 9....
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2k views

MYSQL: Aborted connection to db: 'unconnected' user: debian-sys-maint' host: 'localhost' (Got timeout reading communication packets)

I recently migrated all my logs to a new service, where I could see a recurring bug in mysql. The message is the following: Aborted connection <NUM> to db: 'unconnected' user: debian-sys-maint'...
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2answers
1k views

Percona-Server-shared my.cnf file conflicts with file from package mysql-community-server-5.5

I'm trying to install Percona Toolkit on the server where there is already mysql-community-server5.5.52 is running. I require pt-table-checksum and pt-table-snc utility, so I ran: yum install ...
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1answer
8k views

mysqldump: The 'INFORMATION_SCHEMA.SESSION_VARIABLES' feature is disabled

When I try to run mysqldump on a Percona Server 5.7.17-12, I get this error: # mysqldump -u backups -pxxxx -h 127.0.0.1 --single-transaction --quick dbname mysqldump: [Warning] Using a password on ...
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1answer
61 views

Percona xtradb cluster 1 node consuming memory

I've installed percona xtradb cluster on 3 nodes and all is good until i noticed that 1 node is consuming memory much more the other nodes So i decided to stop all traffic going to this nodes and ...
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1answer
258 views

Is there a way to load large BLOBs without restarting MySQL?

I'm trying to move the last few databases off an older mysql server, but one in particular has me stumped: ERROR 1118 (42000) at line 595: The size of BLOB/TEXT data inserted in one transaction is ...
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1answer
480 views

mysqladmin not waiting for full shutdown (or debian init.d script broken?)

I'm running Percona MySQL server 5.6 (from packages) on debian wheezy (same behavior on jessie). Unfortunately I always get this: # service mysql stop [FAIL] Stopping MySQL (Percona Server): mysqld ...
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1answer
2k views

Will running mysqldump on one Percona XtraDB cluster node affect performance on the others?

I have a Percona XtraDB cluster with 3 nodes. Only one of these nodes is connected to by the application that uses the database. I would like to perform 'hot backups' simply using mysqldump on one of ...
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163 views

Cannot create InnoDB tables

I have a working Percona database server running multiple databases with mostly InnoDB tables (maybe a few hundred tables total). Any table that exists is working fine, yet I cannot convert any ...
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1answer
588 views

Is there a (mostly) safe way to backup live MySQL databases using zfs snapshots

Basically what I'm looking for is a way to tell mysql (percona-flavored) to take the following steps: Flush all committed transactions to the filesystem Start buffering all transactions (keep the ...
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1answer
303 views

Activating PAM configuration for Percona

I'm trying to configure Percona with LDAP support via PAM including group mappings and restriction. My Percona authentication setup is as follows: INSTALL PLUGIN pam SONAME 'auth_pam.so'; create ...
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80 views

pt-pmp fails to run on percona 5.5 ubuntu 12.04

Command: [mysql] root:/mnt# pt-pmp --pid 16898 Wed Dec 7 18:41:51 UTC 2016 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffd4126000 18 libaio::??(libaio....
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1answer
157 views

Percona 5.7 restarting and drop my connection

i have fight with this bug a long time now, when i run scripts to MySQL (Percona) i disconnect me, and when i try to import a mysql dump from a live server its here disconnect me to. So what i'm ...
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2answers
638 views

Percona mysql-server on ubuntu 16.04

Issue: Can't install Percona mysql server. Platform: Ubuntu 16.04 x64 Server is an Openvz container. Memory: 1.5GB installation method apt-get install percona-xtradb-cluster-server-5.6 Source: ...
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1answer
2k views

CentOS6 box: yum remove Percona-Server-shared-51 dependencies

I want to install Percona 5.7, but when I run the relevant yum command it tells me that 57 clashes with Percona-Server-shared-51. I don't really know why I even have that installed, since I also have ...
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1answer
73 views

PerconaDB cant run without innodb_recovery 4

My Percona 5.7.11-4 crashed without cause. Now I can run only with innodb force recovery = 4. Here is backtrace from log. Can you help? Thank you. > Thread pointer: 0x0 Attempting backtrace. You ...
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1answer
1k views

Percona XtraDB Cluster 5.6 does not start

All the good days. I want to run for test purposes Percona XtraDb Cluster on ubuntu 14.04. The basis here took these two articles https://habrahabr.ru/post/152969/ https://www.percona.com/doc/percona-...
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0answers
241 views

mysql Alter table to compress data fails with “Duplicate entry”

I was trying to compress few tables, but one of them caused this error alter table MY_table row_format=compressed, algorithm=INPLACE, LOCK=NONE; Query OK, 0 rows affected (0.00 sec) ERROR 1062 ...