1

I am new to MySQL and MySQL cluster setup. However going through several blogs and Web links I've finally able to manage the cluster up and running. I have 1 management, 1 SQL and 3 data nodes (currently without any replicated SQL or data nodes as I have set NoOfReplicas=1 in the config.ini file). After running ndb_mgm> show I can see there is a start just after the first data node, what does it means? I searched over google but didn't find any proper answer. Kindly help.

ndb_mgm> show

Cluster Configuration

[ndbd(NDB)] 3 node(s)

id=3 @10.10.10.3 (mysql-5.5.34 ndb-7.2.14, Nodegroup: 0, *)

id=4 @10.10.10.4 (mysql-5.5.34 ndb-7.2.14, Nodegroup: 1)

id=5 @10.10.10.5 (mysql-5.5.34 ndb-7.2.14, Nodegroup: 2)

[ndb_mgmd(MGM)] 1 node(s)

id=1 @10.10.10.1 (mysql-5.5.34 ndb-7.2.14)

[mysqld(API)] 1 node(s)

id=6 @10.10.10.6 (mysql-5.5.34 ndb-7.2.14)


0

It shows which node is master. It is internal thing and probably the only visible effect of it is when exactly half of the nodes goes down. Then if one of the remaining nodes is master - cluster keeps working. If not - cluster aborts.

http://dev.mysql.com/doc/refman/5.1/en/faqs-mysql-cluster.html#qandaitem-B-10-1-8

Updated link:
http://dev.mysql.com/doc/refman/5.1/en/faqs-mysql-cluster.html#faq-cluster-what-show-nodegroup-star

  • Thanks a lot for the link. That totally answers my question :) – Joarder Kamal Feb 2 '14 at 23:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.