Percona xtradb cluster node2 won't start I have configured Percona Xtradb cluster 5.6. The first node starts fine when bootstrapped, but the second node seems to have an issue with this variable setting:

wsrep_provider=/usr/lib/libgalera_smm.so


I am running the cluster nodes on Ubuntu 14.04. For the error log, this is what is throws at me:

150608 18:43:03 mysqld_safe Starting mysqld daemon with databases from 
/var/lib/mysql

150608 18:43:03 mysqld_safe Skipping wsrep-recover for empty datadir: 
/var/lib/mysql
150608 18:43:03 mysqld_safe Assigning 00000000-0000-0000-0000-000000000000:-1 
to wsrep_start_position
2015-06-08 18:43:03 0 [Warning] Using unique option prefix key_buffer instead
of key_buffer_size is deprecated and will be removed in a future release. 
Please use the full name instead.
2015-06-08 18:43:03 0 [Warning] TIMESTAMP with implicit DEFAULT value is    
deprecated. Please use --explicit_defaults_for_timestamp server option (see 
documentation for more details).
2015-06-08 18:43:03 0 [Note] /usr/sbin/mysqld (mysqld 5.6.24-72.2-56-log)  
starting as process 5977 ...
2015-06-08 18:43:03 5977 [Note] WSREP: Read nil XID from storage engines, 
skipping position init
2015-06-08 18:43:03 5977 [Note] WSREP: wsrep_load(): loading provider library 
'/usr/lib/galera3/libgalera_ssm.so'
2015-06-08 18:43:03 5977 [ERROR] WSREP: wsrep_load(): dlopen():   
/usr/lib/galera3/libgalera_ssm.so: cannot open shared object file: No such 
file or directory
2015-06-08 18:43:03 5977 [ERROR] WSREP:
wsrep_load(/usr/lib/galera3/libgalera_ssm.so) failed: Invalid argument (22). 
Reverting to no provider.
2015-06-08 18:43:03 5977 [Note] WSREP: Read nil XID from storage engines,  
skipping position init
2015-06-08 18:43:03 5977 [Note] WSREP: wsrep_load(): loading provider library 
'none'
2015-06-08 18:43:03 5977 [ERROR] Aborting

2015-06-08 18:43:03 5977 [Note] WSREP: Service disconnected.
2015-06-08 18:43:04 5977 [Note] WSREP: Some threads may fail to exit.
2015-06-08 18:43:04 5977 [Note] Binlog end
2015-06-08 18:43:04 5977 [Note] /usr/sbin/mysqld: Shutdown complete


I have tried commenting out #wsrep_provider and starting the node with the following command

$sudo /etc/init.d/mysql start --wsrep_provider="/usr/lib/libgalera_ssm.so"


But this does not seem to help. The node still fails to start.

The libgalera_ssm.so file is actually present on both servers, hence I am kinda confused why it works on one server and not the other. But it is worth pointing out that even node one gives the same error when I try to start it without using bootstrap-pxc and just use /etc/init.d/mysql start.
The log entries

2015-06-08 18:43:03 5977 [ERROR] WSREP: wsrep_load(): dlopen(): /usr/lib/galera3/libgalera_ssm.so: cannot open shared object file: No such file or directory
2015-06-08 18:43:03 5977 [ERROR] WSREP: wsrep_load(/usr/lib/galera3/libgalera_ssm.so) failed: Invalid argument (22). Reverting to no provider.


show that MySQL cannot find the file /usr/lib/galera3/libgalera_ssm.so so it cannot use it as a WSREP provider.  Check that this file exists and is accessible.  If your system is 64-bit, it might be in /usr/lib64/.

Also please post the error message you get when starting the node -- without reading the exact error message it's a shot in the dark.