linux上的 heartbeat 双机热备服务架设

linux上的 heartbeat 双机热备服务架设

2009-11-14 12:19

【一】安装前环境设定

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两台主机硬件环境(不必完全一致)：

CPU: Xeon 3G *2 (EM64T)

MEM: 2G

NIC: Intel 1G *2

eth0: 对外IP

eth1: 对内IP(HA专用)

两台主机的eht1使用双机对联线直接连接。

分区方式：

Filesystem 容量挂载点

/dev/sda2 9.7G /

/dev/sda6 45G /Datas

/dev/sda1 99M /boot

none2.0G /dev/shm

/dev/sda3 9.7G /opt

另外每台主机应预留500M的raw空间或者更多来作为共用空间被HA使用。操作系统：

RedHat Enterprise 4 Update2 (2.6.9-22 EL)

预安装软件：

@ X Window System

@ GNOME Desktop Environment

@ KDE Desktop Environment

@ Editors

@ Engineering and Scientific

@ Graphical Internet

@ Text-based Internet

@ Authoring and Publishing

@ Server Configuration Tools

@ Development Tools

@ Kernel Development

@ X Software Development

@ GNOME Software Development

@ KDE Software Development

@ Administration Tools

@ System Tools

【二】安装前网络环境设定：

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node1: 主机名：servers201 ( HA01 )

eth0: 192.168.10.201 //对外IP地址

eth1: 10.0.0.201 //HA心跳使用地址

node2: 主机名：servers202 ( HA02 )

eth0: 192.168.10.202 //对外IP地址

eth1: 10.0.0.202 //HA心跳使用地址

特别注意要检查以下几个文件：

/etc/hosts

/etc/host.conf

/etc/resolv.conf

/etc/sysconfig/network

/etc/sysconfig/network-scripts/ifcfg-eth0

/etc/sysconfig/network-scripts/ifcfg-eth1

/etc/nsswitch.conf

#vi /etc/hosts

node1的hosts内容如下：

127.0.0.1 localhost.localdomain localhost 192.168.10.201 servers201 HA01

10.0.0.201 HA01

10.0.0.202 HA02

192.168.10.202 server202

node2的hosts内容如下:

127.0.0.1 localhost.localdomain localhost 192.168.10.202 servers202 HA02

10.0.0.202 HA02

10.0.0.201 HA01

192.168.10.201 server201

#cat /etc/host.conf

order hosts,bind

#cat /etc/resolv.conf

nameserver 61.139.2.69 //DNS地址

#cat /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=servers201 //主机名

GATEWAY="192.168.10.1" //网关

GATEWAY="eth0" //网关使用网卡

ONBOOT=YES //启动时加载

FORWARD_IPV4="yes" //只允许IPV4

#cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0

ONBOOT=yes

BOOTPROTO=static

IPADDR=192.168.10.201

NETMASK=255.255.255.0

GATEWAY=192.168.10.1

TYPE=Ethernet

IPV6INIT=no

#cat /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1

ONBOOT=yes

BOOTPROTO=none

IPADDR=10.0.0.201

NETMASK=255.255.255.0

TYPE=Ethernet

[node1] 与 [node2] 在上面的配置中，除了

/etc/hosts

/etc/sysconfig/network

/etc/sysconfig/network-scripts/ifcfg-eth0

/etc/sysconfig/network-scripts/ifcfg-eth1

要各自修改外，其他一致。

配置完成后，试试在各自主机上ping对方的主机名，应该可以ping通: /root#ping HA02

PING HA02 (10.0.0.202) 56(84) bytes of data.

64 bytes from HA02 (10.0.0.202): icmp_seq=0 ttl=64 time=0.198 ms 64 bytes from HA02 (10.0.0.202): icmp_seq=1 ttl=64 time=0.266 ms 64 bytes from HA02 (10.0.0.202): icmp_seq=2 ttl=64 time=0.148 ms --- HA02 ping statistics ---

3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 0.148/0.204/0.266/0.048 ms, pipe 2

【三】安装HA 与HA依赖包

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rpm -Uvh libnet-1.1.2.1-1.rh.el.um.1.i386.rpm //可以不装

rpm -Uvh heartbeat-pils-2.0.4-1.el4.i386.rpm

rpm -Uvh heartbeat-stonith-2.0.4-1.el4.i386.rpm

rpm -Uvh heartbeat-2.0.4-1.el4.i386.rpm

rpm -Uvh ipvsadm-1.24-5.i386.rpm

【四】配置 HA的各配置文件

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配置心跳的加密方式:authkeys

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#vi /etc/ha.d/authkeys

如果使用双机对联线(双绞线)，可以配置如下：

#vi /etc/hc.d/authkeys

auth 1

1 crc

存盘退出，然后

#chmod 600 authkeys

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配置心跳的监控：haresources

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#vi /etc/ha.d/haresources