I have three `clusters` setup and running perfectly for the past months. Recently I want to add another `cluster` in a different location but somehow I keep on getting errors. At first, I was just following this tutorial (where I setup the first time few months ago) https://www.howtoforge.com/tutorial/how-to-install-and-configure-galera-cluster-on-ubuntu-1604/ I did not start all the nodes again from the beginning, I just has to find the file of `/mysql/conf.d/galera.cnf` in the other three `nodes` I added the new `nodes` ip into the previous three. So for the forth one I had the `/etc/mysql/conf.d/galera.cnf` setup like... Code: [mysqld] binlog_format=ROW default-storage-engine=innodb innodb_autoinc_lock_mode=2 bind-address=0.0.0.0 # Galera Provider Configuration wsrep_on=ON wsrep_provider=/usr/lib/galera/libgalera_smm.so # Galera Cluster Configuration wsrep_cluster_name="galera_cluster" wsrep_cluster_address="gcomm://node1_ip,node2_ip,node3_ip,node4_ip" # Galera Synchronization Configuration wsrep_sst_method=rsync # Galera Node Configuration wsrep_node_address="xx.xx.xxx.xxx" wsrep_node_name="Node4" somehow I am getting this HUGE error, Code: Group state: e3ade7e7-e682-11e7-8d16-be7d28cda90e:36273 Local state: 00000000-0000-0000-0000-000000000000:-1 [Note] WSREP: New cluster view: global state: e3ade7e7-e682-11e7-8d16-be7d28cda90e:36273, view# 122: Primary, number of nodes: 4, my [Warning] WSREP: Gap in state sequence. Need state transfer. [Note] WSREP: Running: 'wsrep_sst_rsync --role 'joiner' --address 'xxx.node.4.ip' --datadir '/var/lib/mysql/' --parent '22828' '' rsyncd version 3.1.1 starting, listening on port 4444 [Note] WSREP: Prepared SST request: rsync|xxx.node.4.ip:4444/rsync_sst [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification. [Note] WSREP: REPL Protocols: 7 (3, 2) [Note] WSREP: Assign initial position for certification: 36273, protocol version: 3 [Note] WSREP: Service thread queue flushed. [Warning] WSREP: Failed to prepare for incremental state transfer: Local state UUID (00000000-0000-0000-0000-000000000000) does not at galera/src/replicator_str.cpp:prepare_for_IST():482. IST will be unavailable. [Note] WSREP: Member 0.0 (Node4) requested state transfer from '*any*'. Selected 1.0 (Node1)(SYNCED) as donor. [Note] WSREP: Shifting PRIMARY -> JOINER (TO: 36273) [Note] WSREP: Requesting state transfer: success, donor: 1 [Note] WSREP: GCache history reset: 00000000-0000-0000-0000-000000000000:0 -> e3ade7e7-e682-11e7-8d16-be7d28cda90e:36273 [Note] WSREP: (7642cf37, 'tcp://0.0.0.0:4567') connection to peer 7642cf37 with addr tcp://xxx.node.4.ip:4567 timed out, no messages [Note] WSREP: (7642cf37, 'tcp://0.0.0.0:4567') turning message relay requesting off mariadb.service: Start operation timed out. Terminating. Terminated WSREP_SST: [INFO] Joiner cleanup. rsync PID: 22875 sent 0 bytes received 0 bytes total size 0 WSREP_SST: [INFO] Joiner cleanup done. [ERROR] WSREP: Process was aborted. [ERROR] WSREP: Process completed with error: wsrep_sst_rsync --role 'joiner' --address 'xxx.node.4.ip' --datadir '/var/lib/mysql/' [ERROR] WSREP: Failed to read uuid:seqno and wsrep_gtid_domain_id from joiner script. [ERROR] WSREP: SST failed: 2 (No such file or directory) [ERROR] Aborting Error in my_thread_global_end(): 1 threads didn't exit mariadb.service: Main process exited, code=exited, status=1/FAILURE Failed to start MariaDB 10.1.33 database server. P.S for the older 3 nodes maria db version is 10.1.29 and the new node is 10.1.33 Thanks in advance for any suggestions.