搭建一套完整的Mysql5.7innodbcluster(GroupReplication+mysqlrouter)

先说三个大步骤：

搭Mysql5.7 Group Replication ,配置成单主模式

安装Mysqlshell,配innodbcluster

安装Mysql-router

第一步：搭Mysql5.7 Group Replication ,配置成单主模式

为了节省步骤，我们用RPM方式安装

yum install -y libaio

yum install libnuma* -y
rpm -qa | grep -i mysql # 这一步找到旧的mysql
rpm -e mysql-libs-5.1.-.el6_8.x86_64 --nodeps #我测试的实例上只有这个，删了
rpm -ivh mysql-community-common-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-client-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-embedded-5.7.-.el6.x86_64.rpm
rpm -ivh mysql-community-server-5.7.-.el6.x86_64.rpm
rpm -qa | grep mysql　#验证

拷贝cnf.和服务文件

cp mysqld33* /etc/init.d/
cp -r mysql33* /home/wokofo/

配置文件：

[mysqld]
#skip-grant-tables=
datadir=/home/wokofo/mysql3306/data
socket=/home/wokofo/mysql3306/mysql.sock
log-error=/home/wokofo/mysql3306/mysqld.log
pid-file=/home/wokofo/mysql3306/mysqld.pid
port=
symbolic-links=
user = mysql
server_id =
skip_ssl

gtid_mode = ON
enforce_gtid_consistency = ON
master_info_repository = TABLE
relay_log_info_repository = TABLE
binlog_checksum = NONE
log_slave_updates = ON
log_bin = binlog
binlog_format = ROW
expire_logs_days=
relay_log=relay-log
character_set_server=utf8mb4
max_connections=
open_files_limit=
slow_query_log=

long_query_time=1.000
skip_name_resolve=on
sql_mode=NO_ENGINE_SUBSTITUTION,NO_AUTO_CREATE_USER
max_allowed_packet=

transaction_write_set_extraction = XXHASH64
loose-group_replication_group_name="81125aaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
loose-group_replication_start_on_boot=off
loose-group_replication_local_address="172.16.81.127:13306"
loose-group_replication_group_seeds="172.16.81.125:13306,172.16.81.126:13306,172.16.81.127:13306"
loose-group_replication_ip_whitelist = "127.0.0.1,172.16.0.1/16"

启动服务:

在主节点上执行：

set sql_log_bin=;
grant replication slave,replication client on *.* to 'repluser'@'%' identified by '*************';
flush privileges;
set sql_log_bin=;

install plugin group_replication soname 'group_replication.so';

change master to master_user='repluser',master_password='***********************' for channel 'group_replication_recovery';
set global group_replication_bootstrap_group=ON;
START group_replication;
set global group_replication_bootstrap_group=OFF;
exit;

其他节点上执行：

change master to master_user='repluser',master_password='****************' for channel 'group_replication_recovery'; #这一步如果不是空库，需要自己调
set global group_replication_allow_local_disjoint_gtids_join=ON;
START group_replication;

任意节点上执行

select * from performance_schema.replication_group_members;

验证成功，步骤一完成，GR集群搭建成功

第二步：安装Mysqlshell,配innodbcluster

rpm -ivh mysql57-community-release-el6-.noarch.rpm
yum install -y mysql-shell
python -V #如果低于2.7需要升级

mysqlsh --uri dba@172.16.81.125:3306
Creating a Session to 'dba@172.16.81.125:3306'
Enter password:

mysql-js> var cluster=dba.createCluster('fvt01',{adoptFromGR:true});
A new InnoDB cluster will be created on instance 'dba@172.16.81.125:3306'.

Creating InnoDB cluster 'fvt01' on 'dba@172.16.81.125:3306'...
Adding Seed Instance...

Cluster successfully created. Use Cluster.addInstance() to add MySQL instances.
At least 3 instances are needed for the cluster to be able to withstand up to
one server failure.

mysql-js> cluster.status()
{
"clusterName": "fvt01",
"defaultReplicaSet": {
"name": "default",
"primary": "172.16.81.125:3306",
"status": "OK",
"statusText": "Cluster is ONLINE and can tolerate up to ONE failure.",
"topology": {
"172.16.81.125:3306": {
"address": "172.16.81.125:3306",
"mode": "R/W",
"readReplicas": {},
"role": "HA",
"status": "ONLINE"
},
"l-fvt-mysql2.beta0.cn2:3306": {
"address": "l-fvt-mysql2.beta0.cn2:3306",
"mode": "R/O",
"readReplicas": {},
"role": "HA",
"status": "ONLINE"
},
"l-fvt-mysql3.beta0.cn2:3306": {
"address": "l-fvt-mysql3.beta0.cn2:3306",
"mode": "R/O",
"readReplicas": {},
"role": "HA",
"status": "ONLINE"
}
}
}
}
mysql-js> dba.configureLocalInstance("dba@127.0.0.1:3306")
Please provide the password for 'dba@127.0.0.1:3306':

Detecting the configuration file...
Default file not found at the standard locations.
Please specify the path to the MySQL configuration file: /home/wokofo/mysql3306/my.cnf
Validating instance...

The instance '127.0.0.1:3306' is valid for Cluster usage
You can now use it in an InnoDB Cluster.

{
"status": "ok"
}
mysql-js> ctrl c
Bye!

第三步：安装Mysql-router

yum install mysql-router

mysqlrouter --bootstrap 172.16.28.105
chown mysql:mysql /etc/mysqlrouter/mysqlrouter.conf

cd /usr/local/
mysqlrouter --bootstrap dba@172.16.81.125: --directory myrouter --user mysql --force
cd myrouter/

cat mysqlrouter.conf

sh start.sh

netstat -anp |grep router