1、环境说明
vmwareworkstation 12
centos 7.2 64bit mini install
mariadb 10.1
已关闭selinux firewalld
2、yum安装mariadb 10.1
配置yum源
# MariaDB 10.1 CentOS repository list - created 2016-12-13 01:20 UTC
# http://downloads.mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
安装mariadb,大约100M，centos mini 依赖包perl rsysnc ..
yum install mariadb-server mariadb-client
3、初始化数据库
只需要在第一台服务器配置即可。
#systemctl start mariadb
#mysql_secure_installation 设置mysql root密码，其他回答yes即可。
4、关闭数据库，修改/etc/my.cnf.d/server.cnf
systemctl stop mariadb
vi /etc/my.cnf.d/server.cnf
[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/lib64/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://192.168.65.128,192.168.65.129"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
注意wsrep_cluster_address配置需要引号.
5、启动第一节点mariadb
第一个节点启动与其他不同，需要使用_WSREP_START_POSITION。使用galera提供的脚本。
#galera_new_cluster
检查wsrep状态
mysql> MariaDB [(none)]> show status like “wsrep_%”;
| Variable_name | Value |
|---|---|
| wsrep_apply_oooe | 0.000000 |
| wsrep_apply_oool | 0.000000 |
| wsrep_apply_window | 0.000000 |
| wsrep_causal_reads | 0 |
| wsrep_cert_deps_distance | 0.000000 |
| wsrep_cert_index_size | 0 |
| wsrep_cert_interval | 0.000000 |
| wsrep_cluster_conf_id | 1 |
| wsrep_cluster_size | 1 |
| wsrep_cluster_state_uuid | ab5f4c8d-c10a-11e6-9b50-4e319db8c0ac |
| wsrep_cluster_status | Primary |
| wsrep_commit_oooe | 0.000000 |
| wsrep_commit_oool | 0.000000 |
| wsrep_commit_window | 0.000000 |
| wsrep_connected | ON |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 1.901e-06/4.4636e-06/1.1001e-05/3.47701e-06/5 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_flow_control_paused | 0.000000 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_sent | 0 |
| wsrep_gcomm_uuid | ab5dcc24-c10a-11e6-b67a-bbb4829e3b24 |
| wsrep_incoming_addresses | 192.168.65.128:3306 |
| wsrep_last_committed | 0 |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_cached_downto | 18446744073709551615 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_commits | 0 |
| wsrep_local_index | 0 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_avg | 0.500000 |
| wsrep_local_recv_queue_max | 2 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_avg | 0.000000 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_local_state_uuid | ab5f4c8d-c10a-11e6-9b50-4e319db8c0ac |
| wsrep_protocol_version | 7 |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 25.3.18(r3632) |
| wsrep_ready | ON |
| wsrep_received | 2 |
| wsrep_received_bytes | 144 |
| wsrep_repl_data_bytes | 0 |
| wsrep_repl_keys | 0 |
| wsrep_repl_keys_bytes | 0 |
| wsrep_repl_other_bytes | 0 |
| wsrep_replicated | 0 |
| wsrep_replicated_bytes | 0 |
| wsrep_thread_count | 2 |
58 rows in set (0.00 sec)
6、其他节点配置
6.1复制gelare配置到节点2的server.cnf文件
6.2启动mariadb
systemctl start mariadb
6.3查看启动情况
# systemctl status mariadb
参考资料：
https://mariadb.com/kb/en/mar…
http://severalnines.com/blog/…
