# wsrep\_cluster\_size=1 & wsrep\_ready=ON. What is wrong?

**URL:** https://forums.percona.com/t/wsrep-cluster-size-1-wsrep-ready-on-what-is-wrong/2486
**Category:** Percona XtraDB Cluster 5.x
**Created:** [October 4, 2012, 5:33am UTC](https://forums.percona.com/t/wsrep-cluster-size-1-wsrep-ready-on-what-is-wrong/2486 "2012-10-04T05:33:26Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Anaka](https://avatars.discourse-cdn.com/v4/letter/a/b19c9b/32.png) [@Anaka](https://forums.percona.com/u/Anaka)
#### Post date: [October 4, 2012, 5:33am UTC](https://forums.percona.com/t/wsrep-cluster-size-1-wsrep-ready-on-what-is-wrong/2486/1 "2012-10-04T05:33:26Z")

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Hi:

First, sorry for my english, i know isn’t very good, but i hope that you can understand it.

Im new with XtraDB Cluster and im testing it.

I’ve mounted a 3 nodes XtraDB Cluster, and all seems to work ok. Now i’m testing to defeat nodes and i’ve some issues.  
I turned off 2 nodes, and let only one on. I suposed that the node will don’t work but it’s still working ok.

wsrep\_cluster\_size=1 and wsrep\_ready=ON, and clustercheck returns that the Percona XtraDB Cluster Node is synced. You can see the attached file.

I’m able to use the mysql server and work with the data and not receive any message of error like:  
ERROR 1213 (40001): Deadlock found when trying to get lock; try restarting transaction  
ERROR 1047 (08S01): Unknown command

The part of my.cnf of the 3 nodes relative to the cluster is:

[mysqld\_safe]  
wsrep\_urls= gcomm://10.253.5.135:4567,gcomm://10.253.5.136:4567,gcomm:// 10.253.5.137:4567

[mysqld]  
#wsrep\_cluster\_address=gcomm://10.253.5.135  
wsrep\_provider=/usr/lib64/libgalera\_smm.so

wsrep\_slave\_threads=4  
wsrep\_cluster\_name=mysqlcs01  
wsrep\_sst\_method=xtrabackup  
wsrep\_node\_name=mysqlnd02  
wsrep\_sst\_auth=xtrabackupuser:xtrabackuppass

log\_slave\_updates

innodb\_locks\_unsafe\_for\_binlog=1  
innodb\_autoinc\_lock\_mode=2

What is wrong with my cluster?

Thanks.