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MySQL之——CentOS6.5_x64安装配置drbd8.4.2

时间:2021-07-01 10:21:17 帮助过:39人阅读

MySQL之——CentOS6.5_x64安装配置drbd8.4.2

一、主机资源:

588.png

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DRBD下载地址:http://oss.linbit.com/drbd/

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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 successfully created.  
success
~]# mkdir -p /usr/local/drbd/var/run/drbd  
~]#  drbdadm up redis                             #启用资源
Device '1' is configured!  
Command 'drbdmeta 1 v08 /dev/sdb internal apply-al' terminated with exit code 20
~]# cat /proc/drbd                                #查看DRBD状态
version: 8.4.2 (api:1/proto:86-101)  
GIT-hash: 7ad5f850d711223713d6dcadc3dd48860321070c build by , 2012-12-31 20:26:02  
1: cs:Connected ro:Secondary/Secondary ds:Inconsistent/Inconsistent C r-----  
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:10485404
~]# mkdir /drbd                                   #为DRBD分区挂载创建路径

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

五、设置主节点Primary node(master配置)

~]# drbdadm primary --force redis               #设置master角色为Primary  
~]# mkfs.ext4 /dev/drbd1                          #格式化drbd1(逻辑设备)
mke2fs 1.41.12 (17-May-2010)  
文件系统标签=  
操作系统:Linux  
块大小=4096 (log=2)  
分块大小=4096 (log=2)  
Stride=0 blocks, Stripe width=0 blocks  
655360 inodes, 2621351 blocks  
131067 blocks (5.00%) reserved for the super user  
第一个数据块=0  
Maximum filesystem blocks=2684354560  
80 block groups  
32768 blocks per group, 32768 fragments per group  
8192 inodes per group  
Superblock backups stored on blocks:   
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632  
正在写入inode表: 完成                              
Creating journal (32768 blocks):  
Writing superblocks and filesystem accounting information: 完成  
This filesystem will be automatically checked every 36 mounts or 180 days, whichever comes first.  Use tune2fs -c or -i to override.
~]# mount /dev/drbd1 /drbd                             #挂载DRBD分区  
~]# df -h
文件系统              容量  已用  可用 已用%% 挂载点  
/dev/sda3             8.7G  1.1G  7.3G  13% /  
tmpfs                 497M     0  497M   0% /dev/shm  
/dev/sda1             194M   64M  120M  35% /boot  
/dev/drbd1            9.9G  151M  9.2G   2% /drbd

六、同步测试:

mater操作:

~]# ls  
anaconda-ks.cfg  drbd-8.4.2  drbd-8.4.2.tar.gz  install.log  install.log.syslog  
~]# cp drbd-8.4.2.tar.gz /drbd  
~]# ll /drbd  
总用量 676  
-rw-r--r-- 1 root root 675803 10月 15 21:14 drbd-8.4.2.tar.gz  
drwx------ 2 root root  16384 10月 15 21:07 lost+found  
~]# umount /dev/drbd1                    #卸载挂载的DRBD分区  
~]# drbdadm secondary redis              #主节点角色降级

slave操作:

~]# drbdadm primary redis                   #备节点设置成primary角色  
~]# mount /dev/drbd1 /drbd              #备节点挂载DRBD分区  
~]# df -h
文件系统              容量  已用  可用 已用%% 挂载点  
/dev/sda3             8.7G  1.1G  7.3G  13% /  
tmpfs                 497M     0  497M   0% /dev/shm  
/dev/sda1             194M   64M  120M  35% /boot  
/dev/drbd1            9.9G  152M  9.2G   2% /drbd
~]# ll /drbd  
总用量 676  
-rw-r--r-- 1 root root 675803 10月 15 21:14 drbd-8.4.2.tar.gz  
drwx------ 2 root root  16384 10月 15 21:07 lost+found

测试完成~!

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