Mariadb Galera Cluster 群集 安装部署

Mariadb Galera Cluster 群集 安装部署

##centos 7.2
##主机节点###:  node1 node2 node3
#####################################################
# #配置内核
# echo '
# * soft nofile 65536  
# * hard nofile 65536 
# '>>/etc/security/limits.conf
# #
# echo '
# fs.file-max=655350  
# net.ipv4.ip_local_port_range = 1025 65000  
# net.ipv4.tcp_tw_recycle = 1 
# '>>/etc/sysctl.conf
# sysctl -p
# ###########################

###所有节点执行
cat >/etc/yum.repos.d/CentOS-OpenStack-liberty.repo <<EOF
[centos-openstack-liberty]    
name=CentOS-7 - OpenStack liberty     
baseurl=http://vault.centos.org/centos/7.3.1611/cloud/x86_64/openstack-liberty/
gpgcheck=0     
enabled=1     
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Centos-7
EOF

yum install -y mariadb mariadb-server mariadb-galera-server 
yum install expect -y

#配置数据库
echo "#
[mysqld]
bind-address = 0.0.0.0
default-storage-engine = innodb
innodb_file_per_table
max_connections = 4096
collation-server = utf8_general_ci
character-set-server = utf8
#" >/etc/my.cnf.d/test.cnf

#启动数据库服务
systemctl enable mariadb.service
systemctl start mariadb.service

#mysql_secure_installation #初始化设置密码,自动交互

####初始化数据库服务，只在一个节点进行
yum install expect -y
/usr/bin/expect << EOF
set timeout 30
spawn mysql_secure_installation
expect {
    "enter for none" { send "\r"; exp_continue}
    "Y/n" { send "Y\r" ; exp_continue}
    "password:" { send "123456\r"; exp_continue}
    "new password:" { send "123456\r"; exp_continue}
    "Y/n" { send "Y\r" ; exp_continue}
    eof { exit }
}
EOF

########
mysql -u root -p123456 -e "show databases;"

#########galera配置
cp /etc/my.cnf.d/galera.cnf{,.bak}

egrep -v "#|^$" /etc/my.cnf.d/galera.cnf.bak >/etc/my.cnf.d/galera.cnf
sed -i 's/wsrep_on=1/wsrep_on=ON/' /etc/my.cnf.d/galera.cnf
sed -i 's/wsrep_sst_auth=root:/wsrep_sst_auth=root:'123456'/' /etc/my.cnf.d/galera.cnf

#################
######node1节点 ,
#sed -i "s/bind-address = 0.0.0.0/bind-address = $(ip addr |grep global |grep $(route  |grep default |awk '{print $NF}') |head -n1 |awk '{print $2}' |cut -d '/' -f1)/" /etc/my.cnf.d/test.cnf
echo "
wsrep_cluster_address="gcomm://node1,node2,node3"
wsrep_node_address=$(ip addr |grep global |grep $(route  |grep default |awk '{print $NF}') |head -n1 |awk '{print $2}' |cut -d '/' -f1)
">>/etc/my.cnf.d/galera.cnf

cat /etc/my.cnf.d/galera.cnf

systemctl daemon-reload
systemctl stop mariadb.service
#启动第一个节点
galera_new_cluster 

###########################
######其它节点运行 
#sed -i "s/bind-address = 0.0.0.0/bind-address = $(ip addr |grep global |grep $(route  |grep default |awk '{print $NF}') |head -n1 |awk '{print $2}' |cut -d '/' -f1)/" /etc/my.cnf.d/test.cnf
echo "
wsrep_cluster_address="gcomm://node1,node2,node3"
wsrep_node_address=$(ip addr |grep global |grep $(route  |grep default |awk '{print $NF}') |head -n1 |awk '{print $2}' |cut -d '/' -f1)
">>/etc/my.cnf.d/galera.cnf


cat /etc/my.cnf.d/galera.cnf

systemctl restart mariadb.service

###########################
#####其它节点启动后，重启第一个节点 node1
systemctl restart mariadb.service


#####检测
netstat -antp|grep mysqld
mysql -u root -p123456 -e "show status like 'wsrep_cluster_size';"
mysql -u root -p123456 -e "show status like 'wsrep_incoming_addresses';"