Undo Space: It is not getting to 0% usage after LCP (no replies)
Hi, we started now monitoring the undo space after having a problem with a hanging Local checkpoint (LCP) ( https://forums.mysql.com/read.php?25,661125,662601#msg-662601 ). A LCP takes about 2 1/2...
View Articlendb-7.5.5 : Foreignkey contraint failure returning incomplete error message...
I got a foreign-key constraint failure with incomplete error message returned from NDB - 1452, u'Cannot add or update a child row: a foreign key constraint fails (Unknown error code)' I got 2 tables...
View ArticleCreating new tables -> INNODB (1 reply)
Thanks for all the help so far, and sorry that I am still not sure that I am quite there yet. I wanted to test if my cluster is working, and when I run a "show" on my mngt cluster, it shows that all...
View ArticleMaster-Master Replication (no replies)
Hello, I'm trying to set up master-master replication for MySQL and use TPCC to benchmark the setup. This is the my.cnf file for the primary master (master in the first cluster). [mysqld]...
View ArticleIncrease max row size in future release? (no replies)
Any plans to increase the maximum row size for NDB past 14K? This seems like a small row size for modern hardware?
View ArticleMySQL Cluster data nodes fails with 7200: LCP fragment scan watchdog (no...
Hi, We have a MySQL cluster setup with 1 Management Node, 2 Data nodes and 2 SQL Nodes. Configurations for it is as below: mysql-5.6.28 ndb-7.4.10 ------------------------------------------------...
View ArticleNDB Cluster Data nodes crashing with error 2341 (no replies)
Hello, I am having problems with ndb data nodes that keep crashing with no helpful errors. We are running ndb-7.4.17 with 1 management node, 2 data nodes, and 3 API nodes. The data nodes keep going...
View ArticleNDB Cluster Data Nodes Shutting Down From Signal 9 (no replies)
Hello, We're having an issue with both of the data nodes in our cluster connecting successfully then, after a very short time, disconnecting. Checking the log files of these nodes reveals that the...
View ArticleMYSQL Clustering on Windows (1 reply)
Dear Gurus, I need your kind and urgent help to configure MYSQL clustering on windows 2012 R2. I will provide the details as needed. I have two servers VM's. 1) Windows 2012 R2 2) Windows 2012 R2 I...
View ArticleMySQL Cluster 7.6.4: Partical LCP, more (no replies)
http://mikaelronstrom.blogspot.com/2018/01/partial-lcp-in-mysql-cluster-764.html http://mikaelronstrom.blogspot.com/2018/01/mysql-cluster-764-is-out.html
View Articlendb_mgmd --initial returned non-zero exit status 1 (no replies)
Using the MySQL 7.5.9 Cluster Auto Installer on RHEL 7.4, and I get the error: Command '[u'/usr/sbin/ndb_mgmd', '--initial', '--ndb-nodeid=49', '--config-dir=/home/administrator/MySQL_Cluster/49/',...
View Articlendb_mgmt not found (auto install) (2 replies)
I'm using RHEL 7.4, and would like to setup a 3-server MySQL cluster. I've installed MySQL Cluster Auto Installer 7.5.9 (best I can tell), but get the error "Cannot locate ndb_mgmd" error. I can find...
View ArticleMySQL Cluster Monitoring - Cluster name and some other basic things (no replies)
In this part of the MEM documentation: https://dev.mysql.com/doc/mysql-monitor/4.0/en/mem-install-prereqs-mysql-ndb-cluster-requirements-ref.html it says this: " Edit your cluster configuration file...
View ArticleMySQL Cluster 7.6 includes new Cluster Configurator (no replies)
http://toncigrgin.blogspot.co.uk/2018/02/oracle-mysql-cluster-76-includes-new.html
View ArticleMySQL NDB Cluster 7.6 (no replies)
http://mikaelronstrom.blogspot.com/2018/01/mysql-cluster-764-is-out.html http://mikaelronstrom.blogspot.com/2018/01/partial-lcp-in-mysql-cluster-764.html...
View ArticleUse only TLSv1.2 (no replies)
Running RHEL 7.4 and MySQL Cluster 7.6.4 (5.7.20) installed via yum. I can connect over SSL, but I get TLSv1.1. I would prefer TLSv1.2. Adding tls_version=TLSv1.2 to /etc/my.cnf causes an error:...
View Articledata node lost connection (err 2305) (1 reply)
Hello I have a problem with our data nodes that shutdown every once in a while. Because I don't know how to format here, I'm using pastebin for all log files. ndbd6 error log:...
View ArticleUNDO Space: used way bigger than total (no replies)
Hi, we experienced - during a mass delete action - a undo space full. Since then our monitoring barks at us with crazy big usage percentages. --- ndb14 undo space usage too high: PROBLEM Undo space...
View ArticleOptimizing Disk usage: Reducing DATA_FREE of disk based tables (no replies)
Hi, we are currently running a clean up operation of the data in our disk based tables. After deleting some data we realized we had to run an "optimize table <tab>" to free up the space. Since...
View ArticleApplication connecting to MySQL Cluster (1 reply)
I have the following setup 2 mgmt nodes 4 mysqld (api) nodes 4 data nodes Question is how should i configure my application to connect to the MySQL Cluster? Should i create a VIP ( 4 mysqld (api)) ?...
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