HA高可用集群部署（ricci+luci+fence_virtd) 双机热备

主机环境 redhat6.5 64位

实验环境 服务端1 ip 172.25.29.1   主机名：server1.example.com  ricci

    服务端2 ip 172.25.29.2    主机名：server2.example.com   ricci

    管理端1 ip 172.25.29.3    主机名：server3.example.com   luci

    管理端2 ip 172.25.29.250     fence_virtd

防火墙状态：关闭

 

1. 安装ricci、luci及创建节点

1.安装、开启ricci（服务端1）

[[email protected]]# vim dvd.repo      #安装之前，修改yum源

#repos on instructor for cla***oom use

#Main rhel6.5 server

[base]

name=InstructorServer Repository

baseurl=http://172.25.29.250/rhel6.5

gpgcheck=0

 

#HighAvailability rhel6.5

[HighAvailability]

name=InstructorHighAvailability Repository

baseurl=http://172.25.29.250/rhel6.5/HighAvailability

gpgcheck=0

 

#LoadBalancer packages

[LoadBalancer]

name=InstructorLoadBalancer Repository

baseurl=http://172.25.29.250/rhel6.5/LoadBalancer

gpgcheck=0

 

#ResilientStorage

[ResilientStorage]

name=InstructorResilientStorage Repository

baseurl=http://172.25.29.250/rhel6.5/ResilientStorage

gpgcheck=0

 

#ScalableFileSystem

[ScalableFileSystem]

name=InstructorScalableFileSystem Repository

baseurl=http://172.25.29.250/rhel6.5/ScalableFileSystem

gpgcheck=0

[[email protected]]# yum clean all        #清除缓存

Loadedplugins: product-id, subscription-manager

Thissystem is not registered to Red Hat Subscription Management. You can usesubscription-manager to register.

Cleaningrepos: HighAvailability LoadBalancer ResilientStorage

              : ScalableFileSystem base

Cleaningup Everything

 

[[email protected]]# yum install ricci -y    #安装ricci

[[email protected]]# passwd ricci       #修改ricci密码

Changingpassword for user ricci.

Newpassword:

BADPASSWORD: it is based on a dictionary word

BADPASSWORD: is too simple

Retypenew password:

passwd:all authentication tokens updated successfully.

[[email protected]]# /etc/init.d/ricci start      #开启ricci

Startingsystem message bus:                               [  OK  ]

Startingoddjobd:                                         [  OK  ]

generatingSSL certificates...  done

GeneratingNSS database...  done

Startingricci:                                           [  OK  ]

[[email protected]]# chkconfig ricci   on     #开机自动开启

服务端2和服务端1做相同的操作

 

2.安装、开启luci （管理端1）

安装之前，与服务端1一样修改yum源

[[email protected]]# yum install luci -y       #安装luci

[[email protected]]# /etc/init.d/luci start     #开启ruci

Startluci...                                             [  OK  ]

Pointyour web browser to https://server3.example.com:8084 (or equivalent) to accessluci

 

在登陆之前，必须有DNS解析，也就是在/etc/hosts添加

例如: 172.25.29.3         server3.example.com

 

3．创建节点

登陆 https://server3.example.com:8084       #luci开放的是8084端口

安全证书，选I Understand Risks

 

点击Confirm Security Excepton

进入到管理服务器的luci界面，登陆时的密码是安装luci虚拟机的root密码

选择Manage Clusters，之后点击Create创建集群

如图，Cluster Name创建集群的名称，勾选Use the Same Passwordfor All Nodes，指的是所有结点所用的是相同的密码，填写要创建的结点名称和密码，名称是服务端的主机名，密码是上面提到的passwd ricci的修改的密码。勾选Download PackagesReboot和Enable，选择Create Cluster

正在创建节点，如图

创建完成，如图

创建完成之后，在服务端1和服务端2的/etc/cluster/下会生成cluster.conf文件，查看如下

[root@server1~]# cd /etc/cluster/

[root@server1cluster]# ls

cluster.conf  cman-notify.d

[root@server1cluster]# cat cluster.conf   #查看文件内容

        #集群名称

   

            #结点1

            #结点2

   

   

   

   

 

2.安装fence_virtd、创建fence设备

1.安装、开启fence_virtd（管理端2）

[root@foundation29Desktop]# yum install fence-virtd* -y

[root@foundation29Desktop]# fence_virtd -c    #设置

Modulesearch path [/usr/lib64/fence-virt]:   

 

Availablebackends:

    libvirt 0.1

Availablelisteners:

    multicast 1.2

    serial 0.4

 

Listenermodules are responsible for accepting requests

fromfencing clients.

 

Listenermodule [multicast]:        #多播

 

Themulticast listener module is designed for use environments

wherethe guests and hosts may communicate over a network using

multicast.

 

Themulticast address is the address that a client will use to

sendfencing requests to fence_virtd.

 

MulticastIP Address [225.0.0.12]:             #多播ip

 

Usingipv4 as family.

 

MulticastIP Port [1229]:      #多播端口号

 

Settinga preferred interface causes fence_virtd to listen only

onthat interface.  Normally, it listens onall interfaces.

Inenvironments where the virtual machines are using the host

machineas a gateway, this *must* be set (typically to virbr0).

Setto 'none' for no interface.

 

Interface[br0]:   

 

Thekey file is the shared key information which is used to

authenticatefencing requests.  The contents of thisfile must

bedistributed to each physical host and virtual machine within

acluster.

 

KeyFile [/etc/cluster/fence_xvm.key]:     #key文件的路径

 

Backendmodules are responsible for routing requests to

theappropriate hypervisor or management layer.

 

Backendmodule [libvirt]:

 

Configurationcomplete.

 

===Begin Configuration ===

backends{

    libvirt {

       uri = "qemu:///system";

    }

 

}

listeners{

    multicast {

       port = "1229";

       family = "ipv4";

       interface = "br0";

       address = "225.0.0.12";

       key_file ="/etc/cluster/fence_xvm.key";

    }

 

}

fence_virtd{

    module_path ="/usr/lib64/fence-virt";

    backend = "libvirt";

    listener = "multicast";

}

 

===End Configuration ===

Replace/etc/fence_virt.conf with the above [y/N]? y

[root@foundation29Desktop]# mkdir /etc/cluster     #创建cluster目录

[root@foundation29Desktop]# cd /etc/cluster/

[root@foundation29cluster]# dd if=/dev/urandom of=fence_xvm.key bs=128 count=1    #生成文件

1+0records in

1+0records out

128bytes (128 B) copied, 0.000167107 s, 766 kB/s

[root@foundation29Desktop]# scp fence_xvm.key [email protected]:/etc/cluster/  #将文件传给服务端1

[email protected]'spassword:

fence_xvm.key                                 100%  512    0.5KB/s   00:00 

 

测试

[root@server1cluster]# ls     #查看

cluster.conf  cman-notify.d fence_xvm.key

以同样的方法传送给服务端2

[root@foundation29Desktop]# systemctl start fence_fence_virtd.service     #开启fence（由于管理端2是7.1的系统，开启时的命令不太一。如果是6.5系统，则用/etc/init.d/fence_virtd start即可）

 

2.创建fence设备

选择Fance Devices

选择Add,如下图，Name指的是添加fence设备的名称，写完之后选择Submit

结果

选择server1.example.com

点击Add Fence Method ,添加Method Name

如图，选择Add Tence Instance

填写Domin，选择Submit

完成之后，服务端2和服务端1的配置相同

 

测试

[root@server1cluster]# fence_node server2.example.com  #测试server2的结点

fenceserver2.example.com success

[root@server2cluster]# fence_node server1.example.com   #测试server1的结点

fenceserver1.example.com success

至此，高可用集群（HA）搭建完毕，可以根据自己的需要在上面铺设自己所需要的业务。