I'm setting up a MariaDB Galera cluster and I can’t seem to get the nodes to join each other. They both start up without errors but never seem to join, the status is always disconnected:
MariaDB [(none)]> show status like 'wsrep%';
+--------------------------+----------------------+
| Variable_name | Value |
+--------------------------+----------------------+
| wsrep_cluster_conf_id | 18446744073709551615 |
| wsrep_cluster_size | 0 |
| wsrep_cluster_state_uuid | |
| wsrep_cluster_status | Disconnected |
| wsrep_connected | OFF |
| wsrep_local_index | 18446744073709551615 |
| wsrep_provider_name | |
| wsrep_provider_vendor | |
| wsrep_provider_version | |
| wsrep_ready | ON |
+--------------------------+----------------------+
first node is started with: "sudo service mysql start —wsrep-new-cluster" (also tried passing in the cluster address just as —wsrep_cluster_address=gcomm://) as well as putting the empty address list in my.cnf
second node is started with: "sudo service mysql start" with cluster address in my.cnf as gcomm://172.16.56.130,172.16.56.131
no matter what the cluster status is always “Disconnected” and cluster size is 0.
I had some settings for SST to use xtrabackup, iptables firewall was on, etc but in order to try and find the issue I turned everything off and went with the most simple config & still the same result.
Here's the my.cnf
# MariaDB database server configuration file.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc_messages_dir = /usr/share/mysql
lc_messages = en_US
skip-external-locking
bind-address = 0.0.0.0
# * Fine Tuning
max_connections = 100
connect_timeout = 5
wait_timeout = 600
max_allowed_packet = 16M
thread_cache_size = 128
sort_buffer_size = 4M
bulk_insert_buffer_size = 16M
tmp_table_size = 32M
max_heap_table_size = 32M
# * MyISAM
myisam_recover = BACKUP
key_buffer_size = 128M
table_open_cache = 400
myisam_sort_buffer_size = 512M
concurrent_insert = 2
read_buffer_size = 2M
read_rnd_buffer_size = 1M
# * Query Cache Configuration
query_cache_limit = 128K
query_cache_size = 64M
log_warnings = 2
slow_query_log_file = /var/log/mysql/mariadb-slow.log
long_query_time = 10
log_slow_verbosity = query_plan
log_bin = /var/log/mysql/mariadb-bin
log_bin_index = /var/log/mysql/mariadb-bin.index
expire_logs_days = 10
max_binlog_size = 100M
# * InnoDB
innodb_buffer_pool_size = 1G
#innodb_log_file_size = 100M
innodb_log_buffer_size = 8M
innodb_file_per_table = 1
innodb_open_files = 400
innodb_io_capacity = 400
innodb_flush_method = O_DIRECT
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
[isamchk]
key_buffer = 16M
# MariaDB / Galera Cluster Settings
wsrep_provider = /usr/lib/galera/libgalera_smm.so
wsrep_provider_options = "gcache.size=32G"
wsrep_cluster_address = "gcomm://172.16.56.130,172.16.56.131"
wsrep_cluster_name = 'my_galera_cluster'
wsrep_node_address = '172.16.56.131'
wsrep_node_name = 'lou-dev-sc-db2'
wsrep_sst_method = xtrabackup
wsrep_sst_auth = root:rootPa$$
wsrep_slave_threads = 16
binlog_format = ROW
default_storage_engine = InnoDB
innodb_autoinc_lock_mode = 2
innodb_locks_unsafe_for_binlog = 1
innodb_flush_log_at_trx_commit = 2
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
!includedir /etc/mysql/conf.d/
I also realize that the xtrabackup needs access rights made available so I have also made a GRANT entry for that user from the remote servers and tested via manual login, still no dice.
Any ideas?
