MySQL之——CentOS6.5_x64安装配置drbd8.4.2

一、主机资源：

********************************************

DRBD下载地址：http://oss.linbit.com/drbd/

********************************************

二、系统基本配置

master、slave都做如下配置。

1.配置/etc/hosts文件

 ~]# vi /etc/hosts  
  
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4  
  
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6  
  
192.168.0.152 master  
192.168.0.153 slave

2.禁用selinux：

# sed -i "7s/enforcing/disabled/" /etc/selinux/config

3.禁用或卸载iptables，这里我们将iptables禁用：

1) 关闭防火墙-----service iptables stop
2)启动防火墙-----service iptables start
3)重启防火墙-----service iptables restart
4) 查看防火墙状态--service iptables status
5) 永久关闭防火墙--chkconfig iptables off
6) 永久关闭后启用--chkconfig iptables on

4.运行yum update升级内核：

# yum update  
Loaded plugins: fastestmirror, presto  
Loading mirror speeds from cached hostfile  
 * base: mirrors.btte.NET  
………

5.格式化/dev/sdb

#fdisk -l

#fdisk /dev/sdb

6.重启

reboot

三、安装DRBD 8.4.2（主备节点配置相同）

1.主备节点安装drbd编译环境：

# yum -y install gcc flex wget make kernel-devel kernel-headers Git libxslt rpm-build automake autoconf

2.下载DRBD安装文件

# wget http://oss.linbit.com/drbd/8.4/drbd-8.4.2.tar.gz

3.解压并安装DRBD文件

#tar -zvxf drbd-8.4.2.tar.gz  
# cd drbd-8.4.2  
drbd-8.4.2]# ./configure --prefix=/usr/local/drbd --with-km  
drbd-8.4.2]# make KDIR=/usr/src/kernels/`uname -r`/  
drbd-8.4.2]# make install

4.安装配置DRBD驱动模块

drbd-8.4.2]# cd drbd  
drbd-8.4.2]# make clean  
drbd-8.4.2]# make KDIR=/usr/src/kernels/`uname -r`/  
drbd-8.4.2]# cp drbd.ko /lib/modules/`uname -r`/kernel/lib/  
drbd-8.4.2]# depmod              #创建模块依赖关系的列表  
drbd-8.4.2]# cp /usr/local/drbd/etc/rc.d/init.d/drbd /etc/rc.d/init.d/  
drbd-8.4.2]# chkconfig --add drbd  
drbd-8.4.2]# chkconfig drbd on

四、定义DRBD 配置文件 （主备节点配置相同）

~]# cp /usr/local/drbd/etc/drbd.d/global_common.conf /usr/local/drbd/etc/drbd.d/global_common-bak.conf  
~]# vi /usr/local/drbd/etc/drbd.d/global_common.conf

global {  
        usage-count yes;                         # 是否参加DRBD使用者统计.默认是yes  
        # minor-count dialog-refresh disable-ip-verification  
}  
  
common {  
        handlers {  
                pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";  
                pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";  
                local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";  
        }  
  
        startup {  
                wfc-timeout 30;  
                degr-wfc-timeout 30;  
                outdated-wfc-timeout 30;  
        }  
  
        options {  
                # cpu-mask on-no-data-accessible  
        }  
  
        disk {  
                on-io-error detach;  
                fencing resource-and-stonith;  
                resync-rate 50M;                 # 设置主备节点同步时的网络速率最大值,单位是字节.  
        }  
  
        net {  
                protocol C;                 # 使用协议C.表示收到远程主机的写入确认后,则认为写入完成.  
                cram-hmac-alg sha1;                  # 设置主备机之间通信使用的信息算法.  
                shared-secret "123456";  
        }  
}

~]# vi /usr/local/drbd/etc/drbd.d/Redis.res

resource redis{    
       on master {    
               device          /dev/drbd1; #逻辑设备的路径    
               disk            /dev/sdb;  #物理设备    
               address         192.168.0.152:7788;  #IP和监听端口  
               meta-disk       internal;    
       }    
       on slave {    
               device          /dev/drbd1;    
               disk            /dev/sdb;    
               address         192.168.0.153:7788;    
               meta-disk       internal;    
       }

~]# modprobe drbd                     #载入DRBD模块  
~]# lsmod |grep drbd                  #确认DRBD模块载入成功

drbd                  314184  0   
libcrc32c             1246  1 drbd

~]# drbdadm create-md redis                 #创建元数据

--==  Thank you for participating in the global usage survey  ==--  
The server's response is:  
  
you are the 4070th user to install this version  
md_offset 10737414144  
al_offset 10737381376  
bm_offset 10737053696  
  
Found some data  
  
 ==> This might destroy existing data! <==  
  
Do you want to proceed?  
[need to type 'yes' to confirm] yes  
  
Writing meta data...  
initializing activity log  
NOT initializing bitmap  
New drbd meta data block success