Why Nodes 2 and 3 doesn't start with new version

MySQL & MariaDB Percona XtraDB Cluster 5.x
1

Hi,

I install Percona 5.5.24, I can’t start my node 2 and node 3.
I have this error message in innobackup.backup.log :

xtrabackup: Error: Please set parameter ‘datadir’
innobackupex: fatal error: no ‘mysqld’ group in MySQL options
innobackupex: fatal error: OR no ‘datadir’ option in group ‘mysqld’ in MySQL options

I don’t understand because I set datadir.

[mysqld]
port=3306
socket=/var/run/mysqld/mysqld.sock
datadir=/var/lib/mysql
tmpdir=/tmp
user=mysql
local-infile=0…

2

I find the problem
this is because rights my.cnf file was in 600 instead of 644