Question

我遵循这条指示

https://tunnelix.com/mariadb-galera-cluster-installation/

在CentOS 7上安装MariaDB 10.1 Galera Cluster。

以下是/etc/my.cnf.d/server.cnf

中的galera配置

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address='gcomm://192.168.0.42,192.168.0.43'
wsrep_cluster_name='galera'
wsrep_node_address='192.168.0.42'
wsrep_node_name='galera1'
wsrep_sst_method=rsync
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0

出于测试目的，我禁用了SELinux和FirewallD。当我用galera_new_cluster打开第一个节点时，我只能看到端口3306正在监听

[root@localhost ~]# netstat -ntpl | grep sql
tcp6       0      0 :::3306                 :::*                    LISTEN      28673/mysqld

然而，据说我应该让端口4567监听聚类，如示例所示（见下图）：

以下是启动日志内容：

[root@localhost ~]# systemctl status mysql.service
● mariadb.service - MariaDB database server
   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/mariadb.service.d
           └─migrated-from-my.cnf-settings.conf
   Active: active (running) since Fri 2017-07-14 20:44:20 +08; 8min ago
  Process: 28777 ExecStartPost=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
  Process: 28736 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= ||   VAR=`/usr/bin/galera_recovery`; [ $? -eq 0 ]   && systemctl set-environment _WSREP_START_POSITION=$VAR || exit 1 (code=exited, status=0/SUCCESS)
  Process: 28734 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
 Main PID: 28749 (mysqld)
   Status: "Taking your SQL requests now..."
   CGroup: /system.slice/mariadb.service
           └─28749 /usr/sbin/mysqld --wsrep-new-cluster

Jul 14 20:44:19 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:19 140558527281408 [Note] InnoDB: Highest supported file format is Barracuda.
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] InnoDB: 128 rollback segment(s) are active.
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] InnoDB: Waiting for purge to start
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.36-82.0 started; log sequ...ber 1617718
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140557741455104 [Note] InnoDB: Dumping buffer pool(s) not yet started
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] Plugin 'FEEDBACK' is disabled.
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] Server socket created on IP: '::'.
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: 2017-07-14 20:44:20 140558527281408 [Note] /usr/sbin/mysqld: ready for connections.
Jul 14 20:44:20 localhost.localdomain mysqld[28749]: Version: '10.1.25-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server
Jul 14 20:44:20 localhost.localdomain systemd[1]: Started MariaDB database server.
Hint: Some lines were ellipsized, use -l to show in full.

检查wsrep状态：

[root@localhost ~]# mysql -u root -pMyPassword --execute="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_bf_aborts    | 0                    |
| wsrep_local_index        | 18446744073709551615 |
| wsrep_provider_name      |                      |
| wsrep_provider_vendor    |                      |
| wsrep_provider_version   |                      |
| wsrep_ready              | OFF                  |
| wsrep_thread_count       | 0                    |
+--------------------------+----------------------+

Answer 1

启动Galera集群的第一个节点必须像这样

service mysql start --wsrep-new-cluster

无法在Centos 7上引导MariaDB 10.1 Galera Cluster

1 个答案: