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2,200 discussions - 8,559 posts

  • Hi, we are using galera cluster in two data centers like C!,C2 . each data center(c1/c2 ) contains 3 nodes. C1:(galera cluster group) Node-A Node-B Node-C C2:(galera cluster group) Node-D Node-E ...
    Ravi Kiran PENTYALARavi Kiran PENTYALA
    Apr 23, 2014 at 9:27 am
    Apr 23, 2014 at 9:27 am
  • Its not supported by ndb cluster. Cluster uses epochs instead which serves a similar purpose for replication but has been in cluster ever since. For some details on circular and other replication ...
    Bernd OcklinBernd Ocklin
    Dec 13, 2013 at 7:00 am
    Dec 13, 2013 at 7:00 am
  • there I have read some document from the Internet , but some problem is very difficult for me to solve , thank for your attention! system OS : redhat 5.4 mysql 5.1.7 huyulin2011
    Huyulin2011Huyulin2011
    Dec 3, 2013 at 8:41 am
    Dec 3, 2013 at 8:41 am
  • Dear All, On executing ndb_mgm show, we used to see < id=1 @10.20.79.5 (mysql-5.5.34 ndb-7.2.14, Nodegroup: 0, Master) , but below log shows '*' instead of Master. Please help me to understand the ...
    Syed shahanavazSyed shahanavaz
    Nov 26, 2013 at 12:50 pm
    Dec 11, 2013 at 3:55 pm
  • Dear All, I want to install "MySQL Cluster" on CentOS 6.3, but the download options on the MySQL website do not have any official - rpms for CentOS. Does RHEL-6 rpms work for CentOS or I have to use ...
    Syed shahanavazSyed shahanavaz
    Nov 24, 2013 at 2:55 pm
    Nov 24, 2013 at 10:39 pm
  • Hi, I setup 3 ndbclusters with circular replication between the clusters, everything working fine so far. Now I am at the chapter about 2-channel-replication ...
    Peter RomfeldPeter Romfeld
    Oct 10, 2013 at 8:17 am
    Oct 10, 2013 at 8:17 am
  • Hi, I got so far that when i do "mysql start slave;" i get: Slave_IO_Running: Yes Slave_SQL_Running: Yes also POS and BINLOGFILE are correct, but i got this output only on the node where i executed ...
    Peter RomfeldPeter Romfeld
    Oct 9, 2013 at 3:20 pm
    Oct 10, 2013 at 3:40 am
  • I have just 4 APP server in one region, so my idea for now to install a mgmt-node with pacemaker for HA + 2-3 Data-Nodes + each APP-server will also act as mysqld-node Since the mysqld is using the ...
    Peter RomfeldPeter Romfeld
    Oct 8, 2013 at 8:20 am
    Oct 9, 2013 at 3:07 pm
  • Hello, Running MySQL Cluster 7.2 with 2 API (MYSQLD)/MGM nodes, 4 Data nodes (64 GB RAM). We are running into an issue when a job that runs every few minutes is grabbing changed data (determined by ...
    Raymond PeacheyRaymond Peachey
    Oct 7, 2013 at 11:00 pm
    Oct 21, 2013 at 9:58 pm
  • Hello everyone, New to this list, as I'm setting up aMySQL Cluster and having problems inserting existing data into it. The cluster seems to work correctly, and creating"simple" tables with text data ...
    Hoggins!Hoggins!
    Jul 25, 2013 at 5:22 pm
    Aug 2, 2013 at 3:47 pm
  • I'm using the OpenJpa 1.3.x branch. (had some issues using OpenJpa 2 and ALL the MySql Cluster tutorials I've looked at still seem to use OpenJpa 1)
    Serdyn du ToitSerdyn du Toit
    Jul 14, 2013 at 10:30 am
    Jul 23, 2013 at 11:47 pm
  • Hi, I have a cluster at version 7.2.8 where the two SQL nodes use _very_ different amounts of RAM. One 1.4GB, the other 12GB as shown by top: top - 13:04:48 up 255 days, 2:02, 1 user, load average ...
    Hendrik WoltersdorfHendrik Woltersdorf
    Jun 25, 2013 at 11:18 am
    Jun 25, 2013 at 11:18 am
  • Hi, Hopeing someone can help me gain some insight into the following problem. I get the following exception on my Windows setup, but not on my Linux setup: INFO: Created cluster connection ...
    Serdyn du ToitSerdyn du Toit
    Jun 5, 2013 at 9:21 am
    Jul 3, 2013 at 3:58 pm
  • Dear all, Is it possible to imitate the behavior of SQL's LIMIT in NDB C++ API? Kind regards, Mazen Alhajri Senior Software Engineer Futures Business Development P.O. Box 53870, Jeddah 21593 ...
    Mazen HajriMazen Hajri
    Jun 1, 2013 at 2:38 pm
    Jun 1, 2013 at 4:31 pm
  • Hi (again): Currently, our cluster is hosting several databases. One of the databases is growing and growing and growing ... and the nodes are starting to swap memory to disk. So, we want to take out ...
    FingerolFingerol
    May 27, 2013 at 4:23 pm
    Jun 4, 2013 at 6:25 am
  • Hi! I have an stupid problem with my MySQL cluster. It's version 5.5.27-ndb-7.2.8-cluster-gpl. I have two nodes and was working perfect. But, I need to change the DataMemory value. SO, i've changed ...
    FingerolFingerol
    May 24, 2013 at 6:11 pm
    May 27, 2013 at 9:53 am
  • Hello to all, I'm having trouble returning a backup made by mysqldump into a two-node cluster. The dumpfile size is 177M and execute the command for its restoration received the error "ERROR 1297 ...
    MichellMichell
    May 21, 2013 at 6:49 pm
    May 24, 2013 at 1:03 pm
  • Hi, New to MySql Cluster - how can I connect to the data node to see what's on there? I want to visually see the partitions data. Or can one query MySql somehow so that it shows you from which data ...
    Serdyn du ToitSerdyn du Toit
    May 16, 2013 at 1:01 pm
    May 17, 2013 at 8:48 am
  • Hi, Assume the following scenario: -2 ndb nodes, and one management node each on separate machines. -I unplug node 2: It detects that it cannot reach node 1 and tries to contact the management node ...
    Sébastien BarréSébastien Barré
    Apr 23, 2013 at 3:03 pm
    Apr 25, 2013 at 6:59 am
  • here is my config.ini [TCP DEFAULT] SendBufferMemory=4M ReceiveBufferMemory=4M [NDB_MGMD DEFAULT] PortNumber=1186 Datadir=/data/mysqlcluster/ [NDB_MGMD] NodeId=1 Hostname=192.168.200.21 ...
    Shrey.chenShrey.chen
    Apr 19, 2013 at 3:02 am
    Apr 19, 2013 at 3:53 am
  • Hello, I have mysqlcluster setup and when I try to run the following command: create logfile group log_group add undofile 'log_group1.log' initial_size=1073741824 undo_buffer_size=31457280 ...
    Sai Kumar GanjiSai Kumar Ganji
    Apr 16, 2013 at 3:52 am
    Apr 16, 2013 at 6:14 am
  • Hello, Is it possible to actually monitor number of connected clients on your mysql cluster when you have cluster connection pooling enabled? For example, in our case we have a MySQL Cluster node ...
    Raymond PeacheyRaymond Peachey
    Apr 15, 2013 at 12:52 pm
    Apr 17, 2013 at 12:21 pm
  • Hello Guys, I am trying to setup a mysql-cluster with two data nodes and one management node. The sequence of step I followed are: Ran *'ndb_mgmd' *on management node Ran '*ndbd --initial' *on both ...
    Sai Kumar GanjiSai Kumar Ganji
    Apr 15, 2013 at 7:21 am
    Apr 15, 2013 at 7:44 am
  • Hi, After the bug #68224 that I've submitted, mysql developper Jonathan Stephens told me that I could get the bug fix by checking out the dev tree. Unfortunately: -the provided link does not work -I ...
    Sébastien BarréSébastien Barré
    Apr 11, 2013 at 9:14 am
    Apr 17, 2013 at 1:42 pm
  • Hello, I am using NDB cluster and confused with two variables ndb_log_bin and sql_log_bin. I think both variables can be used to enable/disable the binlog when log_bin is ON. But, what's difference? ...
    AlexAlex
    Apr 3, 2013 at 7:25 am
    Apr 3, 2013 at 7:25 am
  • The Surge 2013 CFP is open. For details or to submit a paper, please visit http://surge.omniti.com/2013 -- Katherine Jeschke Director of Marketing and Creative Services OmniTI Computer Consulting, ...
    Katherine JeschkeKatherine Jeschke
    Mar 18, 2013 at 6:45 pm
    Mar 18, 2013 at 6:46 pm
  • Unfortunately there is no alternative to this yet with MySQL Cluster. I believe there is work in progress to improve blob handling but I cannot say whether this would help in your application. I ...
    Puneet SachdevPuneet Sachdev
    Mar 14, 2013 at 11:20 am
    Mar 15, 2013 at 7:42 am
  • Hi We have problem with one of our cluster servers,(501a/b), if 501a is active , then 501b should be in passive state , if we have any fail over occurs in 501a it should automatically shifts to 501 b ...
    Ravi Kiran PENTYALARavi Kiran PENTYALA
    Mar 14, 2013 at 7:08 am
    Mar 14, 2013 at 7:08 am
  • The documentation lists the exact same (unless I missed something) wording for the status variables: Ndb_api_read_row_count and Ndb_api_trans_local_read_row_count What is the actual difference ...
    Raymond PeacheyRaymond Peachey
    Mar 8, 2013 at 3:35 pm
    Mar 13, 2013 at 11:12 am
  • Hi All, Article on Active/Passive MYSQLSQL Cluster, setup using Pacemaker with Corosync and DRBD Introduction: We use two nodes, one active (that answers requests from apps) and the other on passive ...
    Ravi Kiran PENTYALARavi Kiran PENTYALA
    Mar 7, 2013 at 12:01 pm
    Mar 7, 2013 at 12:01 pm
  • Hi all, I have a question about replication. We are not sure if this is a bug, but it certainly feels like it. Here is the simplified situation... We have a larger database (~50GB) that is replicated ...
    Ken LinderKen Linder
    Mar 6, 2013 at 3:44 pm
    Mar 6, 2013 at 5:05 pm
  • Hello, I am using NDB 7.1.22 and binlog format is mixed. So I wonder how to calculate the binlog writing speed (Mbytes/s) at a specific traffic. Now I have two formula as below, 1) writing speed = ...
    AlexAlex
    Mar 4, 2013 at 6:05 am
    Mar 4, 2013 at 6:11 am
  • Hello, I have a 2 Mgmt nodes, 4 data nodes, and 2 mysql servers. I have configured the mysql servers to use 30 API node slots each (32 core). The current limit of 255 total nodes (inclusive of mgmt, ...
    Raymond PeacheyRaymond Peachey
    Mar 1, 2013 at 12:49 pm
    Mar 1, 2013 at 5:04 pm
  • Hello, I am using NDB 7.1.22 and binlog format is mixed. So I wonder how to calculate the binlog writing speed (Mbytes/s) at a specific traffic. Now I have two formula as below, 1) writing speed = ...
    AlexAlex
    Mar 1, 2013 at 8:03 am
    Mar 1, 2013 at 8:03 am
  • Hi folks, We are facing issues in setting up three node mysql cluster for high availability. We have set management server on one machine and the same machine has two nodes running locally on them ...
    Ashutosh NarayanAshutosh Narayan
    Feb 27, 2013 at 1:33 pm
    Feb 28, 2013 at 7:35 am
  • Hi all. I am new to MySQL Cluster, and I'm doing a basic installation in some VMs with Debian 6 just to test if we actually want to migrate from MySQL Server to Cluster. My doubt is related to Data ...
    Aitor CedresAitor Cedres
    Feb 25, 2013 at 3:08 pm
    Feb 25, 2013 at 6:14 pm
  • Dear All, I couldn't resolve the below mentioned problem so far, anyone could help me with it? Kind regards, Mazen From: Mazen Hajri Sent: Saturday, February 09, 2013 1:01 PM To: <span ...
    Mazen HajriMazen Hajri
    Feb 18, 2013 at 11:54 am
    Feb 18, 2013 at 11:54 am
  • Hello, I have a NDB table called cdr which has 10M rows, roughly 20Gb. And, the table cdr is partitioned by cdrYear. Now, I want to change the partition by below command, * alter table cdr ...
    AlexAlex
    Feb 17, 2013 at 7:38 am
    Feb 19, 2013 at 6:59 am
  • Dear All, In MySQL Cluster (ndb engine) disk based table, if a column is varchar(255) with UNIQUE INDEX defined then, - For Latin(default) char set, does varchar column takes fixed size? - For UTF-8 ...
    Syed shahanavazSyed shahanavaz
    Feb 10, 2013 at 2:18 pm
    Feb 10, 2013 at 2:18 pm
  • Dear All, I'm facing a problem when trying to perform NDB read scan operations in parallel. The execution of the program is aborted, and one of the following message gets printed: . pollCompleted ...
    Mazen HajriMazen Hajri
    Feb 9, 2013 at 10:02 am
    Feb 9, 2013 at 10:02 am
  • Hi, in a test system we have a very uneven data distribution: ndb_mgm all report memory; Node 10: Data usage is 55%(66989 32K pages of total 120000) Node 10: Index usage is 10%(6657 8K pages of total ...
    Hendrik WoltersdorfHendrik Woltersdorf
    Jan 30, 2013 at 10:35 am
    Jan 30, 2013 at 12:12 pm
  • Dear All, I have couple of doubts regarding NDB alone backup/Restore, - Does online backup of NDB means Database "HOT Backup"? - I found that MySQL Enterprise Backup does only "Warm backups" for ...
    Syed ShahanavazSyed Shahanavaz
    Jan 21, 2013 at 1:46 pm
    Jan 21, 2013 at 1:47 pm
  • Dear Sir/Madam, I am having trouble when restarting a node after I create a log file group. The log file gets created with no errors. The following is the command used: CREATE LOGFILE GROUP LG1 ADD ...
    Keith GaleaKeith Galea
    Jan 11, 2013 at 11:09 am
    Jan 11, 2013 at 1:19 pm
  • <ADV A bayfront lifestyle coming in Tampinesif your page does not display correctly , click here If you are not the intentended recieption of this email and do not wish to further recieved email in ...
    KEDAPACKEDAPAC
    Dec 30, 2012 at 8:04 pm
    Dec 30, 2012 at 8:06 pm
  • Season Greetings To view our christmas greetings in youtube click here. To follow us on facebook
    KEDAPACKEDAPAC
    Dec 27, 2012 at 1:32 pm
    Dec 27, 2012 at 1:35 pm
  • Hi, What does it mean if a transaction fails with "rowid already allocated" ? Should i just re-commit the transaction to try again ? -- Graeme Wallace CTO FareCompare.com O: 972 588 1414 M: 214 681 ...
    Graeme WallaceGraeme Wallace
    Dec 19, 2012 at 2:27 pm
    Dec 19, 2012 at 3:11 pm
  • Hi, I am trying to use Memcached API to set value to a NDB table having composite primary key (col1+col2). - Could anyone kindly guide me the correct syntax of using multi column key in ...
    Syed ShahanavazSyed Shahanavaz
    Dec 9, 2012 at 9:06 am
    Dec 13, 2012 at 6:38 am
  • HI Is to place indexing in HDD hard disk in cluster ????
    Divesh kamraDivesh kamra
    Dec 5, 2012 at 6:59 am
    Dec 5, 2012 at 7:25 am
  • On my cluster its currently taking 20-25 seconds to get a SessionFactory instance back from ClusterJHelper.getSessionFactory(props) Is there anything I can do to make this faster ? G. -- Graeme ...
    Graeme WallaceGraeme Wallace
    Dec 3, 2012 at 7:54 pm
    Dec 5, 2012 at 3:36 pm
  • Do i have to declare an [api] entry in config.ini for every machine that i want to be able to connect to the cluster with ClusterJ. If i have multiple processes on each machine, does that mean i need ...
    Graeme WallaceGraeme Wallace
    Dec 3, 2012 at 2:25 pm
    Dec 3, 2012 at 7:54 pm
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