2-mycat安装

#数据库主机，已搭建好主从
dn1-1-master 192.168.2.220
dn1-2-slave 192.168.2.221
dn2-1-master 192.168.2.222
dn2-2-slave 192.168.2.223
dn3-1-master 192.168.2.224
dn3-2-slave 192.168.2.225
dn4-1-master 192.168.2.226
dn4-2-slave 192.168.2.227
mycat 192.168.2.210

#数据库配置文件
root@dn1-1-master ~]# cat /etc/my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock

[mysql]
prompt="MySQL [\d]> "
no-auto-rehash

[mysqld]
port = 3306
socket = /tmp/mysql.sock

basedir = /application/mysql
datadir = /application/mysql/data
pid-file = /application/mysql/data/centos7.pid
user = mysql
bind-address = 0.0.0.0
server-id = 10 每台数据库的serverID不一样
gtid-mode=on
enforce-gtid-consistency=true
log-slave-updates=1

init-connect = 'SET NAMES utf8mb4'
character-set-server = utf8mb4

skip-name-resolve
back_log = 512

max_connections = 3000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 256
max_allowed_packet = 64M
binlog_cache_size = 1000M
max_heap_table_size = 8M
tmp_table_size = 32M

read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 256M

thread_cache_size = 16

query_cache_type = 0
query_cache_size = 0
query_cache_limit = 0

ft_min_word_len = 4

log_bin = mysql-bin
binlog_format = row
expire_logs_days = 7

log_error = /application/mysql/data/centos7.err
slow_query_log = 1
long_query_time = 1
log-queries-not-using-indexes = on
slow_query_log_file = /application/mysql/data/mysql-slow.log

performance_schema = 0
explicit_defaults_for_timestamp


skip-external-locking

default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 1000M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120

bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 16M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1

interactive_timeout = 10800
wait_timeout = 10800

[mysqldump]
quick
max_allowed_packet = 32M

[myisamchk]
key_buffer_size = 16M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

做host解析
cat >>/etc/hosts<<EOF
dn1-1-master 192.168.2.220
dn1-2-slave 192.168.2.221
dn2-1-master 192.168.2.222
dn2-2-slave 192.168.2.223
dn3-1-master 192.168.2.224
dn3-2-slave 192.168.2.225
dn4-1-master 192.168.2.226
dn4-2-slave 192.168.2.227
mycat 192.168.2.210
EOF
echo 'mycat 192.168.2.210' >>/etc/hosts
192.168.2.210作为mycat的节点服务器
hostnamectl set-hostname mycat

预先安装Java运行环境
yum install -y java

上传安装包
rz -y Mycat-server-1.6.5-release-20180117003034-linux.tar.gz

解压安装包
tar -zxvf Mycat-server-1.6.5-release-20180117003034-linux.tar.gz

软件目录结构
[root@mycat mycat]# ls
bin  catlet  conf  lib  logs  version.txt

配置环境变量和连接启动

echo 'PATH=/application/mysql/bin/:/tools/mycat/bin:$PATH' >>/etc/profile
source /etc/profile

[root@mycat mycat]# mycat start
Starting Mycat-server...

检查启动状态
[root@mycat mycat]# netstat -lntup|grep java
tcp        0      0 127.0.0.1:32000         0.0.0.0:*               LISTEN      17914/java          
tcp6       0      0 :::1984                 :::*                    LISTEN      17914/java          
tcp6       0      0 :::8066                 :::*                    LISTEN      17914/java          
tcp6       0      0 :::9066                 :::*                    LISTEN      17914/java          
tcp6       0      0 :::5233                 :::*                    LISTEN      17914/java          
tcp6      0      0 :::28219                :::*                    LISTEN      17914/java 

连接mycat：
mysql -uroot -p123456 -h 127.0.0.1 -P8066

配置文件介绍
schema.xml       ----->主配置文件（读写分离、高可用、分表、节点控制）
server.xml		 ----->mycat软件本身相关的配置
rule.xml         ----->分片规则配置文件（分片规则列表、使用方法）