MariaDB Galera Cluster
MariaDB Galera Cluster
2015/07/26
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Configure MariaDB Galera Cluster.
All nodes in cluster become Master-Server in this configuration. | |
| [1] | Install MariaDB Galera packages on all nodes like follows. |
[root@www ~]#
vi /etc/yum.repos.d/mariadb.repo
# MariaDB 10.0 CentOS repository list # http://mariadb.org/mariadb/repositories/ [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.0/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1 enabled=0
yum --enablerepo=mariadb -y install MariaDB-Galera-server
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| [2] | Configure a 1st node like follows. |
[root@www ~]#
vi /etc/my.cnf.d/server.cnf
# line 19: uncomment and change like follows
[galera] # Mandatory settings wsrep_provider=
/usr/lib64/galera/libgalera_smm.so
# specify all nodes in cluster
wsrep_cluster_address=
"gcomm://10.0.0.31,10.0.0.51"
# uncomment all
binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 bind-address=0.0.0.0
# add follows
# cluster name
wsrep_cluster_name="MariaDB_Cluster"
# own IP address
wsrep_node_address="10.0.0.31"
# replication provider
wsrep_sst_method=rsync
[root@www ~]#
/etc/rc.d/init.d/mysql bootstrap
Bootstrapping the cluster.. Starting MySQL.. SUCCESS!
# configure basic settings
[root@www ~]#
mysql_secure_installation
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| [3] | Configure other nodes except a node of previous section like follows. |
[root@node01 ~]#
vi /etc/my.cnf.d/server.cnf
# line 19: uncomment and change like follows
[galera] # Mandatory settings wsrep_provider=
/usr/lib64/galera/libgalera_smm.so
# specify all nodes in cluster
wsrep_cluster_address=
"gcomm://10.0.0.31,10.0.0.51"
# uncomment all
binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 bind-address=0.0.0.0
# add follows
# cluster name
wsrep_cluster_name="MariaDB_Cluster"
# own IP address
wsrep_node_address="10.0.0.51"
# replication provider
wsrep_sst_method=rsync
systemctl start mysql
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| [4] | The Cluster settings is OK, Make sute the status like follows. It's OK if "wsrep_local_state_comment" is "Synced". |
| [root@node01 ~]#
mysql -u root -p
Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 6 Server version: 10.0.20-MariaDB-wsrep MariaDB Server, wsrep_25.10.r4144 Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]>
show status like 'wsrep_%';
+------------------------------+--------------------------------------+ | Variable_name | Value | +------------------------------+--------------------------------------+ | wsrep_local_state_uuid | 20329169-3414-11e5-9285-cab5ed757f81 | | wsrep_protocol_version | 7 | | wsrep_last_committed | 3 | | wsrep_replicated | 0 | | wsrep_replicated_bytes | 0 | | wsrep_repl_keys | 0 | | wsrep_repl_keys_bytes | 0 | | wsrep_repl_data_bytes | 0 | | wsrep_repl_other_bytes | 0 | | wsrep_received | 3 | | wsrep_received_bytes | 237 | | wsrep_local_commits | 0 | | wsrep_local_cert_failures | 0 | | wsrep_local_replays | 0 | | wsrep_local_send_queue | 0 | | wsrep_local_send_queue_max | 2 | | wsrep_local_send_queue_min | 0 | | wsrep_local_send_queue_avg | 0.333333 | | wsrep_local_recv_queue | 0 | | wsrep_local_recv_queue_max | 1 | | wsrep_local_recv_queue_min | 0 | | wsrep_local_recv_queue_avg | 0.000000 | | wsrep_local_cached_downto | 18446744073709551615 | | wsrep_flow_control_paused_ns | 0 | | wsrep_flow_control_paused | 0.000000 | | wsrep_flow_control_sent | 0 | | wsrep_flow_control_recv | 0 | | wsrep_cert_deps_distance | 0.000000 | | wsrep_apply_oooe | 0.000000 | | wsrep_apply_oool | 0.000000 | | wsrep_apply_window | 0.000000 | | wsrep_commit_oooe | 0.000000 | | wsrep_commit_oool | 0.000000 | | wsrep_commit_window | 0.000000 | | wsrep_local_state | 4 | | wsrep_local_state_comment | Synced | | wsrep_cert_index_size | 0 | | wsrep_causal_reads | 0 | | wsrep_cert_interval | 0.000000 | | wsrep_incoming_addresses | 10.0.0.31:3306,10.0.0.51:3306 | | wsrep_evs_delayed | | | wsrep_evs_evict_list | | | wsrep_evs_repl_latency | 0/0/0/0/0 | | wsrep_evs_state | OPERATIONAL | | wsrep_gcomm_uuid | 69d7b95d-3415-11e5-9666-7be9d4b6159d | | wsrep_cluster_conf_id | 2 | | wsrep_cluster_size | 2 | | wsrep_cluster_state_uuid | 20329169-3414-11e5-9285-cab5ed757f81 | | wsrep_cluster_status | Primary | | wsrep_connected | ON | | wsrep_local_bf_aborts | 0 | | wsrep_local_index | 1 | | wsrep_provider_name | Galera | | wsrep_provider_vendor | Codership Oy <info@codership.com> | | wsrep_provider_version | 25.3.9(r3387) | | wsrep_ready | ON | | wsrep_thread_count | 2 | +------------------------------+--------------------------------------+ 57 rows in set (0.00 sec) |
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