15、高可用 PXC（percona xtradb cluster） 搭建

安装环境：

所有节点安装

wget http://www.percona.com/redir/downloads/XtraBackup/LATEST/binary/redhat/6/x86_64/percona-xtrabackup-2.2.3-4982.el6.x86_64.rpm

wget http://www.percona.com/redir/downloads/Percona-XtraDB-Cluster/LATEST/binary/linux/x86_64/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64.tar.gz

yum install perl-DBD-MySQL

yum install perl-IO-Socket-SSL.noarch

yum install socat

yum install nc

所有节点安装pxc数据库

cd /opt/mysql/

tar -zxvf /root/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64.tar.gz

ln -s /opt/mysql/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64/ /usr/local/pxc_3308

配置文件要放在默认的/etc/my.cnf

vi /etc/my.cnf        -- 配置文件注意以下参数，并增加红色部分

1. basedir                         =/opt/mysql/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64
2. datadir                         =/data/mysql/pxc_3308/data
3. tmpdir                          =/data/mysql/pxc_3308/tmp
4. server_id                      =203308
5. #percona xtradb cluster
6. binlog_format                  =  ROW    --日志格式必须为ROW
7. default_storage_engine=InnoDB
8. innodb_locks_unsafe_for_binlog=1
9. innodb_autoinc_lock_mode=2
10. wsrep_cluster_name=pcx_lk    --cluster的名字
11. wsrep_cluster_address=gcomm://192.168.1.20,192.168.1.21,192.168.1.22    --集群中所有node-ip
12. wsrep_node_address=192.168.1.20        --每个节点配置为自己的ip
13. wsrep_provider=/usr/local/pxc_3308/lib/libgalera_smm.so
14. #wsrep_sst_method=rsync
15. wsrep_sst_method=xtrabackup
16. wsrep_sst_auth=sst:wubxwubx        --运输的用户

mkdir -p /data/mysql/pxc_3308/{data,tmp,logs}

chown -R mysql:mysql /data/mysql

ln -sf /usr/lib64/libssl.so.10 /usr/lib64/libssl.so.6

ln -sf /usr/lib64/libcrypto.so.10 /usr/lib64/libcrypto.so.6

cd /opt/mysql/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64/

./scripts/mysql_install_db --datadir=/data/mysql/pxc_3308/data

cp support-files/mysql.server /etc/init.d/mysql-pxc

vi /etc/init.d/mysql-pxc

1. basedir=/opt/mysql/Percona-XtraDB-Cluster-5.5.37-rel35.0-25.10.756.Linux.x86_64
2. datadir=/data/mysql/pxc_3308/data

第一个节点启动：

# /etc/init.d/mysql-pxc bootstrap-pxc        --不能用mysqld启动

启动后，进入mysql创建用户

(testing)[email protected] [(none)]> grant all privileges on *.* to ‘sst‘@‘%‘ identified by ‘wubxwubx‘;

(testing)[email protected] [(none)]> grant reload,lock tables ,replication client on *.* to ‘sst‘@‘localhost‘ identified by ‘wubxwubx‘;

(testing)[email protected] [(none)]> flush privileges;

然后启动其他节点：

# /etc/init.d/mysql-pxc start