PXC5.7.21 for linux7.2 installation

PXC installation is very simple!

-- Software download

Https://www.percona.com/downloads/Percona-XtraDB-Cluster-57/LATEST/

-- basic environmental preparation

[root@node2 ~] # vim / etc/hosts-add the following information to the 3-node hosts file

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-- Uninstall

1, 3 nodes install dependency packages

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

-- extract the package and install:

Note to download the package: remember to choose the ssl101 version, the official user manual has the following instructions

[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. To create a user, please authorize [all three nodes] to create a new folder:

[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. Switch mysql users to create my.cnf (the configuration file has only a few simple parameters, if the production environment requires more database parameters)

[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=142port = 3306basedir=/usr/local/pxc_mysqldatadir=/usr/local/pxc_mysql/datasocket=/usr/local/pxc_mysql/data/mysql.socklog-error=/usr/local/pxc_mysql/data/mysqld.logpid-file=/usr/local/pxc_mysql / data/mysqld.pidlog-bin=/usr/local/pxc_mysql/logsslow_query_log_file = / usr/local/pxc_mysql/data/slow.loglog_slave_updatesexpire_logs_days=7binlog_format=ROWinnodb_buffer_pool_size = 1524M#pxcwsrep_provider=/usr/local/pxc_mysql/lib/libgalera_smm.so wsrep_cluster_name=pxc-niewsrep_cluster_address=gcomm://192.168.2.100192.168.2.200192.168.2.210wsrep_node_name=node1wsrep_node_address=192.168 .2.100wsrep _ sst_method=xtrabackup-v2 wsrep_sst_auth=pxc:123456pxc_strict_mode=ENFORCING binlog_format=ROW default_storage_engine=InnoDBinnodb_autoinc_lock_mode=2

Note:

The other two nodes only need to be modified:

Server-id=142-- id can't be the same

Wsrep_node_name=node1-change to the hostname of your own node

Wsrep_node_address=192.168.2.100-- changed to the host IP of your own node

4. Initialize the database with 3 nodes

/ 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

(there is a root password in the / usr/local/pxc_mysql/data/mysqld.log log)

5. Start the first node first:

[root@node1 pxc_mysql] # / usr/local/pxc_mysql/bin/mysqld_safe-- defaults-file=/usr/local/pxc_mysql/my.cnf-- wsrep-new-cluster-- user=mysql &-- start with root

Then enter MySQL and perform the following operations (if you cannot enter, the password has expired, then add: skip-grant-tables in the my.cnf file, and then enter the database without a password: update mysql.user set password_expired= "N" where user= "root"; finally, remove the parameters from the configuration file, restart the database, and enter with the root password you just had. )

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' -create a SST user MySQL [(none)] > flush privileges

(from the information cluster above, the size of the cluster is 1 node, the state is primary, and the node is in the Synced state, which is fully connected and ready for write-set replication. )

6. Start the second node and the third node in turn:

[root@node2 pxc_mysql] # / usr/local/pxc_mysql/bin/mysqld_safe-defaults-file=/usr/local/pxc_mysql/my.cnf-user=mysql &

7. Verify that the cluster deployment is successful:

View at each node:

MySQL [(none)] > show status like 'wsrep_cluster_%' +-- +-- + | Variable_name | Value | +-+ -- + | wsrep_cluster_conf_id | 5 | | wsrep_cluster_size | 3 |-now all three nodes have joined the cluster | wsrep_cluster_state_ Uuid | c2ab52e7-67cf-11e8-9d02-e76acee85210 | | wsrep_cluster_status | Primary | +-+-+

Create a table or database on one of the nodes to see if all three nodes are completed synchronously.