title: cannot add new node to existing galera cluster
body: <p>in the error file i have this.</p>
  
  <p>WSREP: wsrep_load(): loading provider library 'none'</p>
  
  <p>but in the config file /etc/mysql/config.d/galera.conf has this</p>
  
  <pre><code>[mysqld]
  #mysql settings
  binlog_format=ROW
  default-storage-engine=innodb
  innodb_autoinc_lock_mode=2
  query_cache_size=0
  query_cache_type=0
  bind-address=0.0.0.0
  #galera settings
  wsrep_provider=/usr/lib/galera/libgalera_smm.so
  wsrep_cluster_name="pivotrac_cluster"
  wsrep_cluster_address="gcomm://192.168.1.113,192.168.1.119,192.168.1.126,192.168.1.129"
  wsrep_sst_method=rsync
  wsrep_sst_auth=geek:snape99
  wsrep_sst_donor='dot129'
  wsrep_provider_options=”gcache.size = 5G”
  </code></pre>
  
  <p>and the file /usr/lib/galera/libgalera_smm.so  is present.</p>
  
  <p>any ideas?</p>
  
  <p>here is the relevent info in the log file</p>
  
  <pre><code>140926 13:40:52 InnoDB: The InnoDB memory heap is disabled
  140926 13:40:52 InnoDB: Mutexes and rw_locks use GCC atomic builtins
  140926 13:40:52 InnoDB: Compressed tables use zlib 1.2.8
  140926 13:40:52 InnoDB: Using Linux native AIO
  140926 13:40:52 InnoDB: Initializing buffer pool, size = 100.0G
  140926 13:40:57 InnoDB: Completed initialization of buffer pool
  140926 13:40:57 InnoDB: highest supported file format is Barracuda.
  140926 13:41:01  InnoDB: Waiting for the background threads to start
  140926 13:41:02 Percona XtraDB (http://www.percona.com) 5.5.38-MariaDB-35.2 started; log sequence number 1598129
  140926 13:41:02 [Note] Plugin 'FEEDBACK' is disabled.
  140926 13:41:02 [Note] Server socket created on IP: '0.0.0.0'.
  140926 13:41:02 [Note] Event Scheduler: Loaded 0 events
  140926 13:41:02 [Note] WSREP: Read nil XID from storage engines, skipping position init
  140926 13:41:02 [Note] WSREP: wsrep_load(): loading provider library 'none'
  140926 13:41:02 [Note] mysqld: ready for connections.
  Version: '5.5.39-MariaDB-1~trusty-wsrep'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution, wsrep_25.10.r4014
  </code></pre>
  
  <p>some notes 
  this server is ubuntu 14.04 the others are 12.04  ( i was hoping to upgrade their OS one at a time)</p>
  
  <p>i can still log into the mariadb server with root username and password.. </p>
  
  <p>hope someone can help me on this.. thanks all</p>