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PXC5.7.21 for linux7.2安设

2024-09-12 20:30:13
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  PXC的安装非常简单!!!!!!
 
  --软件下载
 
  --基础环境准备
 
  [root@node2 ~]# vim /etc/hosts   ---在3个节点hosts文件加入如下信息
 
  192.168.2.100   node1
 
  192.168.2.200   node2
 
  192.168.2.210   node3
 
  [root@localhost ~]# rpm -e --nodeps mariadb  mariadb-server  mariadb-libs marisa    --卸载
 
  1、3个节点安装依赖包
 
   yum install -y git scons gcc* gcc-c++ openssl* check cmake bison /
  boost-devel asio-devel libaio-devel ncurses-devel readline-devel pam-devel /
  socat perl-time-hires perl-io-socket-ssl.noarch perl-dbd-mysql.x86_64
  --解压软件包,并安装:
 
  下载软件包要注意:切记选择ssl101版本,官方使用手册上有如下说明
 
  [root@localhost ~]# rpm -ivh libev-4.15-1.el6.rf.x86_64.rpm
  [root@localhost ~]# rpm -ivh percona-xtrabackup-24-2.4.11-1.el7.x86_64.rpm
  [root@node1 ~]# tar zxvf Percona-XtraDB-Cluster-5.7.21-rel20-29.26.1.Linux.x86_64.ssl101.tar.gz -C /usr/local/^C
  [root@node1 ~]# cd /usr/local/
  [root@node1 local]# ln -s Percona-XtraDB-Cluster-5.7.21-rel20-29.26.1.Linux.x86_64.ssl101.tar.gz pxc_mysql
  2、创建用户,新建文件夹请授权【三个节点都要操作】 :
 
  [root@localhost ~]# userdel mysql
  [root@localhost ~]# useradd -g mysql mysql
  [root@localhost ~]# passwd mysql
  [root@localhost ~]# mkdir -p /usr/local/pxc_mysql/{data,logs,tmp}
  [root@localhost ~]# mkdir -p /usr/local/pxc_mysql/logs/binlog
  [root@localhost ~]# chown -R mysql:mysql /usr/local/pxc_mysql/
  [root@localhost ~]# chmod -R +x /usr/local/pxc_mysql/
  3、切换mysql用户创建my.cnf (该配置文件只简单的几个参数,如果生产环境需要更多的数据库参数)
 
  [root@node1 ~]# su - mysql
  [mysql@node1 ~]$ cd /usr/local/pxc_mysql/
  [mysql@node1 pxc_mysql]$ vi  my.cnf
  [client]
  socket=/usr/local/pxc_mysql/data
  [mysqld]
  server-id=142
  port = 3306
  basedir=/usr/local/pxc_mysql
  datadir=/usr/local/pxc_mysql/data
  socket=/usr/local/pxc_mysql/data/mysql.sock
  log-error=/usr/local/pxc_mysql/data/mysqld.log
  pid-file=/usr/local/pxc_mysql/data/mysqld.pid
  log-bin=/usr/local/pxc_mysql/logs
  slow_query_log_file = /usr/local/pxc_mysql/data/slow.log
  log_slave_updates
  expire_logs_days=7
  binlog_format=ROW
  innodb_buffer_pool_size = 1524M
  #pxc
  wsrep_provider=/usr/local/pxc_mysql/lib/libgalera_smm.so  
  wsrep_cluster_name=pxc-nie
  wsrep_cluster_address=gcomm://192.168.2.100,192.168.2.200,192.168.2.210
  wsrep_node_name=node1
  wsrep_node_address=192.168.2.100
  wsrep_sst_method=xtrabackup-v2
  wsrep_sst_auth=pxc:123456
  pxc_strict_mode=ENFORCING
  binlog_format=ROW
  default_storage_engine=InnoDB
  innodb_autoinc_lock_mode=2
  注意:
 
  其他两个个节点,只需要修改:
 
  server-id=142   --id不能一样
 
  wsrep_node_name=node1   --改成自己节点的主机名
 
  wsrep_node_address=192.168.2.100  --改成自己节点的主机IP
 
  4、初始化3个节点的数据库
 
  /usr/local/pxc_mysql/bin/mysqld --defaults-file=/usr/local/pxc_mysql/my.cnf --datadir=/usr/local/pxc_mysql/data  --basedir=/usr/local/pxc_mysql  --initialize  
 
  (在/usr/local/pxc_mysql/data/mysqld.log这个日志里有root的密码)
 
  5、首先启动第一个节点:
 
  [root@node1 pxc_mysql]# /usr/local/pxc_mysql/bin/mysqld_safe --defaults-file=/usr/local/pxc_mysql/my.cnf --wsrep-new-cluster --user=mysql &   ---用root起
 
  然后进入MySQL,执行如下操作(如果进不去,报错密码过期,那么在my.cnf文件加入:skip-grant-tables,然后无密码进入数据库: update mysql.user set password_expired="N" where user="root"; 最后把参数从配置文件去掉,重启数据库,用刚才的root密码进入即可。)
 
  MySQL [(none)]> show databases;
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | mysql              |
  | performance_schema |
  | sys                |
  +--------------------+
  4 rows in set (0.00 sec)
  MySQL [(none)]> show status like 'wsrep_local_state%';
  +---------------------------+--------------------------------------+
  | Variable_name             | Value                                |
  +---------------------------+--------------------------------------+
  | wsrep_local_state_uuid    | c2ab52e7-67cf-11e8-9d02-e76acee85210 |
  | wsrep_local_state         | 4                                    |
  | wsrep_local_state_comment | Synced                               |
  +---------------------------+--------------------------------------+
  3 rows in set (0.00 sec)
  MySQL [(none)]> show status like 'wsrep_cluster_%';
  +--------------------------+--------------------------------------+
  | Variable_name            | Value                                |
  +--------------------------+--------------------------------------+
  | wsrep_cluster_conf_id    | 1                                    |
  | wsrep_cluster_size       | 1                                    |
  | wsrep_cluster_state_uuid | c2ab52e7-67cf-11e8-9d02-e76acee85210 |
  | wsrep_cluster_status     | Primary                              |
  +--------------------------+--------------------------------------+
  4 rows in set (0.00 sec)
  MySQL [(none)]> GRANT RELOAD, LOCK TABLES, PROCESS, REPLICATION CLIENT ON *.* TO 'pxc'@'%' IDENTIFIED BY '123456';    ---创建一个SST用户
  MySQL [(none)]> flush privileges;
  (从上面的信息集群大小为1个节点,状态为primary,节点处于Synced状态,它已完全连接,可以进行write-set replication。 )
 
  6、依次启动第二、第三个节点:
 
  [root@node2 pxc_mysql]# /usr/local/pxc_mysql/bin/mysqld_safe --defaults-file=/usr/local/pxc_mysql/my.cnf --user=mysql &
 
  7、验证集群部署成功:
 
  在各个节点查看:
 
  MySQL [(none)]> show status like 'wsrep_cluster_%';
  +--------------------------+--------------------------------------+
  | Variable_name            | Value                                |
  +--------------------------+--------------------------------------+
  | wsrep_cluster_conf_id    | 5                                    |
  | wsrep_cluster_size       | 3                                    |    ---现在是3个节点都加入了集群
  | wsrep_cluster_state_uuid | c2ab52e7-67cf-11e8-9d02-e76acee85210 |
  | wsrep_cluster_status     | Primary                              |
  +--------------------------+--------------------------------------+
  在其中一个节点创建表或数据库 看看是否3个节点都同步完成。

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