All Questions
116
questions
0
votes
0
answers
99
views
MySQL Database errors with deadlock when restoring backup
we recently wanted to switch from a single MariaDB server to a replicated Percona XtraDB instance. For this purpose I set up an XtraDB cluster in our kubernetes cluster with 7 nodes distributed across ...
1
vote
2
answers
197
views
Percona MySQL 8.0.25-15 filling up slow log with headers only
Has anyone experienced an issue where when the slow log is enabled with the following options:
root@(none)> show global variables like "%slow_query%";
+-----------------------------------+...
- 331
0
votes
0
answers
59
views
Installing XtraBackup on Centos 6
I’m trying to install XtraBackup on centos 6 using this guid but i get these errors:
Error: Package: perl-DBD-MySQL-4.013-3.el6.x86_64 (C6.10-base)
Requires: libmysqlclient.so.16()(64bit)
Error: ...
- 99
0
votes
0
answers
122
views
Big performance gap between two similar servers in mysql-percona 5.6 ubuntu
I cannot figure out reason of performance difference between two (three?) similar percona 5.6 instances. I prepared some tpcc-like benchmarking using sysbench and among 3 similar servers, one is ...
0
votes
1
answer
472
views
how to take mysql xtrabackup to a remote server
I have a server running with mysql with huge db of 1 TB.
Now, I want to take full backup through percona xtra backup, because incremental backup is easy with percona xtrabackup.
Now,if I initiate ...
0
votes
1
answer
613
views
MySQL 8 replication via non-ssl connecion
I'm trying to setup tiny master-slave environment with percona-server-server.x86_64-8.0.27-18.1.el8.
A plan is to use non-ssl connections between the nodes as the servers will communicate in the LAN ...
- 1
0
votes
1
answer
386
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 = ...
- 2,055
0
votes
0
answers
274
views
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 ...
1
vote
1
answer
863
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 ...
0
votes
1
answer
290
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 ...
- 1,193
1
vote
0
answers
171
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 ...
- 11
0
votes
1
answer
238
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 ...
- 145
1
vote
0
answers
504
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:
...
0
votes
1
answer
206
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 ...
- 41
0
votes
1
answer
1k
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....
- 183
1
vote
2
answers
615
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 ...
- 143
0
votes
2
answers
505
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 ...
- 6,101
-1
votes
2
answers
640
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 ...
4
votes
3
answers
6k
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-...
- 851
0
votes
1
answer
273
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 ...
- 851
-2
votes
1
answer
403
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?
- 123
0
votes
2
answers
1k
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
...
- 3
0
votes
0
answers
392
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....
- 111
0
votes
1
answer
1k
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 ...
- 6,101
0
votes
2
answers
362
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 ...
- 8,841
4
votes
2
answers
5k
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.
...
- 287
1
vote
1
answer
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 ...
- 460
0
votes
1
answer
299
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....
- 123
2
votes
0
answers
3k
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'...
- 121
0
votes
2
answers
2k
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 ...
6
votes
1
answer
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 ...
- 460
0
votes
1
answer
109
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 ...
1
vote
1
answer
332
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 ...
- 14.5k
2
votes
1
answer
664
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 ...
- 91
0
votes
1
answer
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 ...
- 133
0
votes
1
answer
388
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 ...
- 187
0
votes
1
answer
206
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 ...
0
votes
2
answers
679
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:
...
- 11
2
votes
1
answer
2k
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-...
- 121
0
votes
1
answer
430
views
MySQL creates huge files every night, bringing down the server
I have an Ubuntu 12.04 LEMP server with shop app ontop, running MySQL 5.5 as DB (currently since this problem started I've already switched to Percona with no success).
So, current facts: every night ...
- 121
0
votes
0
answers
664
views
Error enabling TokuDB - Percona Server not running with jemalloc enabled
I have installed:
Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-63-generic x86_64)
Percona Server 5.6.26-74.0-1.trusty
Percona Server TokuDB 5.6.26-74.0-1.trusty
libjemalloc1 3.6.0-2.trusty
In /etc/mysql/my....
- 1
-2
votes
1
answer
1k
views
How does one add commands to nrpe.cfg for Percona MySQL plugins on NRPE client? [closed]
How do you add commands to nrpe.cfg for Percona MySQL plugins on NRPE client?
To configure percona-nrpe plugins for mysql you will have to do 3 things viz :
1. define commands in command.cfg
2. ...
- 277
0
votes
1
answer
391
views
Percona: What are the implications of changing repl.commit_order?
I'm currently doing some trials of Galera Cluster with Percona 5.6. I've progressed to testing a 2 node cluster on baremetal. With repl.commit_order set to 0 (off) the TPS performance as measured with ...
- 590
4
votes
2
answers
1k
views
99% disk IO spikes with Percona
So we have a server that has seemingly random spikes in disk I/O, going up to 99.x% at random times and for no obvious reason, staying high for a while, and then going back down. This didn't use to be ...
user284587
1
vote
0
answers
625
views
Installing php-mysql on centos 6.5 fails due to conflicts when percona client 5.5 also installed
Some background: I'm writing a Chef cookbook to set up a LNMP stack for local development. It requires the php-mysql library for PHP 5.4 (using the php package). We're using the yum-remi repository ...
- 111
1
vote
2
answers
596
views
Percona cluster signal 11
We have a percona cluster that is randomly getting signal 11's on different cluster nodes. I've exhausted everthing I know. Here's the .err file with the signal 11.
We're running Server version: 5.6....
- 21
0
votes
0
answers
525
views
MySQL/Percona Server sudden CPU usage spikes
I've got some trouble with Percona Server 5.5: suddenly abnormous MySQL CPU usage caused the system
to become unresponsive as it was eating up all CPU with a large number of threads.
It's a 24 core ...
- 23
2
votes
1
answer
2k
views
Can't add Nodes to Percona XtraDB cluster
In my case, I have two nodes in cluster, but when I use $service mysql bootstrap-pxc to start XtraDB cluster, I found nodes were not added to cluster. I also check /var/log/mysql/error.log, but no ...
- 142
1
vote
1
answer
5k
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% /...
- 1,481
0
votes
1
answer
980
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 ...
- 583