Questions tagged [xtradb-cluster]
Percona XtraDB Cluster : Synchronous Replication Cluster for MySQL
57
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2
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What are the drawbacks of using Galera Cluster instead of Master/Slave Replication?
What are the drawbacks of using Galera Cluster instead of regular Master/Slave Replication? Galera's 0 slave lag time, Synchronous replication and no Single point of failure seem very appealing then ...
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3
answers
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How to run OPTIMIZE TABLE on a 3-node cluster?
I've my hands on a 3-node Percona XtraDB Cluster where, according to mysqlcheck, some tables are corrupted (some indexes contain the wrong number of entries):
mydb.mytable
Warning : InnoDB: Index '...
- 1,314
6
votes
2
answers
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Scaling Percona datacenters: setup and replication
Since our startup has taken off nicely we are now meeting with some of those issues that you always assumed would NEVER effect you.
We have already scaled alot of our application stack: we offloaded ...
- 300
5
votes
1
answer
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Does it make sense to run a cluster of database servers in docker containers?
I'm currently looking into setting up a database cluster (MySQL Galera or Percona) but I have only 2 machines.
However, according to many sources I've read (This article from the Mariadb KB), the ...
- 53
4
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2
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Percona XtraDB Cluster and MySQL Replication
I've setup a 3-node multi master replication with percona xtradb cluster, it works perfectly.
Now I've tried to add some read-only slaves setting up replication as usual but it seems the binlog doesn'...
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4
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1
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How to clear gcache pages in Percona PXC
I have a 4 node cluster(percona PXC) and one of the nodes have more than 150 gcache disk files each of size ~128 MB. I would like to purge or flush them so that the server user fresh gcache disk file.
...
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3
votes
1
answer
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How to perform backup on quite active 500G+ MariaDB Galera Cluster?
what would be your preferred method to perform backup on quite active 500G+ MariaDB Galera Cluster?
Using mariabackup/innobackupex (fork of Percona Xtrabackup) with throttle. You must think about ...
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3
votes
1
answer
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Percona Node fails to join: Operation not permitted
Joining a new Percona node fails with:
130521 7:15:44 [Warning] WSREP: Failed to prepare for incremental state transfer: Local state UUID (00000000-0000-0000-0000-000000000000) does not match group ...
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3
votes
1
answer
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Does this make my XtraDB Cluster hang?
After seeing the following in the error log on the second node:
121003 7:16:06 [Note] WSREP: Member 0 (joiner) synced with group.
121003 7:16:06 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 0)
...
- 1,006
3
votes
2
answers
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Different Percona XtraDB nodes use different indexes for the same query
We have three Percona XtraDB nodes arranged in a master-master replication topology.
One of our databases contains a heavily utilized table. This table has multiple indexes, as well as a few foreign ...
- 81
2
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3
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Scaling for MariaDB / Percona / Galera Scaling
I ventured into the world of NoSQL database and as great as they are the lack of true ACID compliance has been a nightmare resulting in a lot of bad data so I am looking into relational databases.
I ...
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2
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2
answers
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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:
/...
- 1,910
2
votes
3
answers
1k
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9 node percona xtradb cluster
We are looking to launch a 9 node percona xtradb cluster on Amazon where each ec2 node uses 20k iops disks.
I was afraid if a 9 node cluster will work and mostly what I see is 3 node clusters.
We ...
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2
votes
1
answer
502
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Split brain scenario - RAC and PXC
Even though split brain scenario occurs in both Oracle RAC and Percona's XtraDB Cluster, a two node cluster is allowed and split brain scenario is resolved in RAC but a two node is not recommended in ...
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2
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1
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Percona XtraDB Cluster: How to skip SST when starting?
Is there a way to skip State Snapshot Transfer (SST) at startup on Percona XtraDB Cluster Server?
wsrep_sst_mode=skip doesn't work:
121003 6:49:55 Percona XtraDB (http://www.percona.com) 1.1.8-...
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2
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3
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2k
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Percona XtraDB - Random deadlock
Randomly my database gets locked completely and queries hang and they pile up until it gets "Too many connections".
Below is my mysql log file, I couldn't find anything related to the error system ...
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2
votes
1
answer
477
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Innobackupex apply-log should be done before emergency restore or after each backup?
Basically Percona Innobackupex consist with three steps:
1. Backup
2. Apply log
3. Copy back restore during emergency
My question:
When should I do apply log? Is it after each backup or before ...
- 153
2
votes
1
answer
2k
views
Will large inserts crash a 3-node MySQL database cluster?
We have a 3 node MySQL database cluster than runs on Percona. I have a stored procedure that inserts a lot of rows in one hit, potentially over a million rows.
I've been warned (by our DBA) this ...
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2
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2
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38k
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node unable to join a galera cluster; it fails during state transfer
It looks like the node is joining the cluster and then it fails… I have tried with both rsync and xtrabackup and it fails during state transfer. I seems to me that I am missing something real simple ...
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2
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2
answers
170
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Percona XtraDB Cluster - do I add arbiter IP in gcomm://?
I'm configuring Percona XtraDB Cluster 8 on two nodes, and use a 3rd node to act as an arbiter.
I cannot make up out of the docs whether to add the IP of the arbiter in the galera nodes addresses of ...
- 113
2
votes
1
answer
799
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Sync mysql database between 2 geo locations (datacenters)
We have a database cluster built on Percona MySQL. We are going to extend our redundancy with another database cluster with a new data center located in another GEO location. So that in case of ...
- 146
2
votes
1
answer
253
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Replicating into a Percona XtraDB Cluster
We have a 2 node (plus an arbiter) Percona XtraDB cluster. It is used for data indexing/archiving. It has it's own database called archive but it is also the replication slave for a database called ...
- 141
2
votes
2
answers
1k
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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---- ...
- 1,314
2
votes
2
answers
4k
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Percona xtradb cluster node2 won't start
I have configured Percona Xtradb cluster 5.6. The first node starts fine when bootstrapped, but the second node seems to have an issue with this variable setting:
wsrep_provider=/usr/lib/...
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1
vote
2
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656
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MySQL XtraDB/Galera Cluster High Availability RamDisk *SuperFast*
Ok, So this is going to be a speculative question, mostly design oriented and a rather long one. I'd grab a cuppa' covfefe, if I were you.
Preface: So I have been researching into databases and ...
- 121
1
vote
1
answer
2k
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MySQL 5.5 Replication to Galera/Percona XtraDB Cluster
We are currently investigating moving our current MySQL 5.5 Master > 5 x Slaves (with Statement Based Replication, apx 250GB data and growing) to a HA clustering option. Mainly to provide greater ...
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1
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1
answer
661
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Transfer data from standard mysql server to Percona XtraDB Cluster
My old mysql 5.5 server is having some hardware issue, so now I'm going to setup a new Percona 5.7, two node cluster in my environment and connect my app into it.
Now the problem is, How should I ...
- 111
1
vote
2
answers
2k
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ProxySQL user not connecting - XtraDB
I'm trying to set up a xtraDB Cluster consisting of 3 nodes. Now i've got the cluster up and running and per the instructions i'm trying to set up ProxySQL for load balancing.
So i've installed ...
- 31
1
vote
1
answer
515
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Inconsistency in Tables - Mariadb Galera Cluster
MariaDB cluster Version : mysql Ver 15.1 Distrib 10.0.24-MariaDB,
I have a two node + arbitrator cluster which is live and replicating data across nodes.
Unfortunately we found some inconsistency in ...
- 121
1
vote
1
answer
2k
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Percona Xtradb Cluster 5.5: node can't join cluster - SST fails with auth problem
I have 3-nodes PXC 5.5 cluster. Settings on node03 in my.cnf [mysqld] section:
wsrep_cluster_address=gcomm://<ip_node1>,<ip_node2>
wsrep_cluster_name=cluster
wsrep_provider_options="...
- 121
1
vote
1
answer
53
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MariaDB cluster and external data feed
I've just finished setting up the 3 nodes mariadb (galera) cluster (let's call the nodes node1, node2 and node3). In order to have the cluster up to date with currently working mariadb database (let's ...
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1
vote
1
answer
1k
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Percona cluster + Wordpress blogs, low performance
We currently run ~ 900 WordPress blogs on several machines so was decided to move to load balanced environment with clustered db.
I followed instructions from http://www.percona.com/doc/percona-...
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1
vote
1
answer
2k
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Cannot execute statement: impossible to write to binary log?
When I try to create a user story/issue in my my percona xtradb cluster I am getting below error. How to fix it?
Error creating issue:
Could not create workflow instance: root cause: while inserting:...
- 11
1
vote
1
answer
1k
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Percona Cluster Failed with Haproxy : Connection Limit Exceeded
We have 3 node PXC cluster setup on amazon ec2. Its been working fine for around 4-5 months. Since last week, every node starting to fail due to MySQL connection limit exceeded error. we increased the ...
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1
vote
1
answer
234
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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 ...
- 11
1
vote
1
answer
66
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Fragmentation with PXC setup using an ordered UUID as PK
I am looking to implement a table which will accessable via a Percona XtraDB cluster of 3+ nodes. I am expecting it to grow at about 1mil rows per month and the data will be kept for about 2 years (...
- 113
1
vote
0
answers
65
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New percona xtradb node shuts itself down shortly after launch
We currently have a 3 node percona xtradb cluster running on premises. We are trying to add a 4th, remote node ( Obviously split-brain is a concern in this situation but it is only temporary while we ...
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1
vote
0
answers
990
views
What causes the creation of such a large number of Galera cache files?
I manage a Percona XtraDB 3-node cluster. Recently the MySQL datadir of one of the nodes (not the one from which the cluster has been bootstrapped) started being filled up with gcache.page.00nnnn ...
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1
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0
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532
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Percona XtraDB Cluster With Async slaves
I have set up a 3 node percona cluster in amazon ec2. As our client required, i also had to set up an asynchronous slaves in another datacenter as well. Each async slave pointed to single percona ...
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0
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2
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5k
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Percona Xtradb Cluster : How to speed up insert?
I recently installed a 3 full master node cluster based on Percona Xtradb (very easy install). But now i need to make some tuning to increase INSERT/UPDATE requests. Actually, i made around 100 ...
- 101
0
votes
1
answer
69
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Percona xtradb cluster 5.7 solution on AWS and on premise. Not all nodes are connected to
We have 3 nodes cluster. 2 in virginia and 1 in ohio. The cluster is working fine we do not have any issues. But nothing pop out when we started doing extensive monitoring using datadog. It shows that ...
- 111
0
votes
2
answers
894
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Percona XtraDb cluster auto increment
Help me please clarify a very important question on which I can't find the answer. It only can be proven with tests.
Let's say we have XtraDB Cluster (or Galera Cluster) with three nodes. We have ...
0
votes
1
answer
275
views
How to sync two or more collocation database server?
I can't tell if mysql clustering could be a solution(I am thinking about galera or xtradb clustering). But my biggest problem is about the unstable internet connection.
Actually it is planned as ...
- 453
0
votes
1
answer
742
views
how to change wsrep_cluster_size in Percona XtraDB Cluste?
I am trying to setup Percona XtraDB Cluster according to their doc
When I run show status like 'wsrep%'; it's show wsrep_cluster_size is 1 in every node(2 node for me). Actually it should be 1 for ...
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0
votes
1
answer
44
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Failed transaction replicated and thrown errors on remaining Percona XtraDB cluster nodes
I am using Percona XtraDB cluster 5.5.37. I have run one alter command (to add unique constraint) on node1. But due to duplicate keys,alter command failed on it. But that failed statement passed to ...
- 419
0
votes
1
answer
32
views
command: apply_migration, originalError: Error 1845: LOCK=NONE is not supported for this operation. Try LOCK=SHARED
I've got this error during app schema migration
{"timestamp":"2023-01-11 11:53:09.043 Z","level":"fatal","msg":"Failed to apply database ...
- 113
0
votes
0
answers
77
views
Page cleaner took ms to flush pages/WSREP has not yet prepared node for application use
I am running percona xtradb cluster 8.0. One of my nodes went down, when I try to bring it up. The log says the transfer is complete and joined.
0.0 (DB404): State transfer from 3.0 (DB403) complete....
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0
votes
1
answer
2k
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"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 ...
- 3
0
votes
1
answer
3k
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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 `...
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0
votes
2
answers
1k
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Percona Xtradb cluster 56 node 2 rejoin cluster failed
I have following DB cluster:
Node 1: Percona-XtraDB-Cluster-56-5.6.39-26.25.1
Node 2: Percona-XtraDB-Cluster-56-5.6.39-26.25.1
Node 3: Percona-XtraDB-Cluster-56-5.6.41-28.28.1
I start in order ...
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