Memcache高可用群集

Memcache高可用群集

实验环境：

实验目的：

实现存储内容的主从备份

实验搭建：

一、主服务器：

1、挂载软件包

#挂载软件包mount.cifs //192.168.100.3/lzp /mnt#创建目录mkdir /opt/magent       #解压必要安装包cd /mnt/memtar zxvf magent-0.5.tar.gz -C /opt/magent/tar zxvf libevent-2.1.8-stable.tar.gz -C /opttar zxvf memcached-1.5.6.tar.gz -C /opt#安装必要组件yum install gcc gcc-c++ make -y

2、对组件进行编译安装

#编译安装libeventcd /opt/libevent-2.1.8-stable/./configure --prefix=/usrmake && make install#编译安装memcachedcd /opt/memcached-1.5.6/./configure --with-libevent=/usrmake && make install#编译安装magentcd /opt/magent/#修改ketama.h配置文件vim ketama.h#ifndef SSIZE_MAX#define SSIZE_MAX 32767#将#endif移动到第三行，删除掉末尾的#endifvim Makefile#第一行末尾添加-lmLIBS = -levent-lm#编译make

#编译好的magent文件

3、将编译好的magent文件复制到/usr/bin目录下，并推送给从服务器

#安装openssh推送软件yum install openssh-clients -y#将编译好的magent文件复制到/usr/bin目录下cp magent /usr/bin#推送magent文件scp magent root@192.168.45.131:/usr/binThe authenticity of host '192.168.45.131 (192.168.45.131)' can't be established.ECDSA key fingerprint is SHA256:bw2256OHr5apf7CliZv/fAOyVNVsMmRn+lZ5efeQgTg.ECDSA key fingerprint is MD5:6f:f6:70:4f:46:64:ec:17:a7:ae:c0:15:1c:8b:55:1c.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added '192.168.45.131' (ECDSA) to the list of known hosts.root@192.168.45.131's password: magent                                     100%  112KB   5.8MB/s   00:00  

4、关闭防火墙和安全功能

systemctl stop firewalld.service setenforce 0

5、安装keepalived，并进行修改

#安装keepalivedyum install keepalived -y#修改配置文件vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived#写入下列内容vrrp_script magent {        script "/opt/shell/magent.sh"        interval 2}global_defs {   notification_email {     acassen@firewall.loc     failover@firewall.loc     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 192.168.200.1   smtp_connect_timeout 30   #修改route-id   router_id MAGENT_HA}vrrp_instance VI_1 {    state MASTER    #修改网卡端口    interface ens33    virtual_router_id 51    priority 100    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    #修改，调用上边函数    track_script {        magent   }    virtual_ipaddress {    #设置虚拟指向地址        192.168.45.188    }}

6、创建magent脚本

mkdir /opt/shellcd /opt/shell/vim magent.sh#!/bin/bashK=`ps -ef | grep keepalived | grep -v grep | wc -l`if [ $K -gt 0 ];then        magent -u root -n 51200 -l 192.168.45.188 -p 12000 -s 192.168.45.132:11211 -b 192.168.45.131:11211elsepkill -9 magentfi#给于运行权限chmod +x magent.sh

7、启动服务，并查看

#启动keepalivedsystemctl start keepalived.service#查看迁移地址ip addr#启动memcached memcached -m 512k -u root -d -l 192.168.45.132 -p 11211

安装telent进行测试

yum install telnet -y

二、从服务器

1、挂载软件包，并关闭防火墙和安全功能

mount.cifs //192.168.100.3/lzp /mnt#关闭防火墙和安全功能systemctl stop firewalld.service setenforce 0

2、解压安装包，并进行编译

#解压安装包cd /mnt/memtar zxvf libevent-2.1.8-stable.tar.gz -C /opttar zxvf memcached-1.5.6.tar.gz -C /opt#安装必要组件包yum install gcc gcc-c++ make -y#编译安装libeventcd /opt/libevent-2.1.8-stable/./configure --prefix=/usrmake && make install#编译安装memcachedcd /opt/memcached-1.5.6/./configure --with-libevent=/usrmake && make install

3、安装keepalived

#安装keepalivedyum install keepalived -y#修改keepalived文件cd /etc/keepalived/mv keepalived.conf keepalived.conf.bkvim keepalived.conf! Configuration File for keepalivedvrrp_script magent {        script "/opt/shell/magent.sh"        interval 2}global_defs {   notification_email {     acassen@firewall.loc     failover@firewall.loc     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 192.168.200.1   smtp_connect_timeout 30   #修改router_id   router_id MAGENT_HB}vrrp_instance VI_1 {    state BACKUP    #修改网络接口    interface ens33    #修改virtual_router_id    virtual_router_id 52    #修改优先级    priority 90    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    track_script {        magent   }    virtual_ipaddress {        #修改地址        192.168.45.188    }}

4、创建magent脚本

 mkdir /opt/shellcd /opt/shell/vim magent.sh#!/bin/bashK=`ip addr | grep 192.168.45.188 | grep -v grep | wc -l`if [ $K -gt 0 ];then        magent -u root -n 51200 -l 192.168.45.188 -p 12000 -s 192.168.45.132:11211 -b 192.168.45.131:11211elsepkill -9 magentfichmod +x magent.sh

4、启动服务

#启动keepalivedsystemctl start keepalived.service #启动memcachedmemcached -m 512k -u root -d -l 192.168.45.131 -p 11211

安装telent进行测试

yum install telnet -y

三、客户机

#关闭防火墙和安全功能systemctl stop firewalld.service setenforce 0#安装telnet yum install telnet -y#在telnet中写入文件[root@manager ~]# telnet 192.168.45.188 12000Trying 192.168.45.188...Connected to 192.168.45.188.Escape character is '^]'.add username 0 0 71234567STORED

在从服务器上查看

在主服务器上查看