基于heartbeat的NFS HA实现
Version: 1.0Maintainer: hutuwormUpdate: 2003-09-30
※系统说明
本系统由两台Dell PowerEdge 2650（HUTUNFS1 & HUTUNFS2）和一台磁盘阵列组成，磁盘阵列划分为ld0 & ld1两个RAID5逻辑盘（Logical Disk）。操作系统为RedHat 7.3 Linux。设置NFS HA的目的是，当HUTUNFS1失败时HUTUNFS2自动接管。
1 安装heartbeat 1.0.3 for RedHat 7.3 http://www.ultramonkey.org/download/heartbeat/1.0.3/redhat_7.3/ heartbeat-1.0.3-1.rh.7.3.1.i386.rpm heartbeat-ldirectord-1.0.3-1.rh.7.3.1.i386.rpm heartbeat-pils-1.0.3-1.rh.7.3.1.i386.rpm heartbeat-stonith-1.0.3-1.rh.7.3.1.i386.rpm
2 设置配置文件: HUTUNFS1为master，HUTUNFS2为slave。 2.1 HUTUNFS1 192.168.0.30 /etc/ha.d/ha.cf # define nodes in cluster node hutunfs1 node hutunfs2 # time a system must be unreachable before considered dead (seconds) deadtime 5 # set up for the serial heartbeat pulse # 如果两台服务器之间用心跳线连接，heartbeat支持串行心跳监测。 #serial /dev/ttyS0 #baud 19200 # interface to run the network heartbeat pulse udp bond0
/etc/ha.d/authkeys auth 3 3 md5 hutuworm
/etc/ha.d/haresources hutunfs1 192.168.0.30 Filesystem::/dev/sdc1::/ld0::ext3 nfslock nfs hutunfs1 192.168.0.30 Filesystem::/dev/sdd1::/ld1::ext3 nfslock nfs
/etc/exports # # Export the shared disk, allowing read/write access and # synchronous I/O with no write delay. /ld0 192.168.0.*(rw,sync,no_wdelay) /ld1 192.168.0.*(rw,sync,no_wdelay)
/etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 hutunfs1 localhost.localdomain localhost 192.168.0.30 hutunfs1 192.168.0.31 hutunfs2
2.2 HUTUNFS2 192.168.0.31 /etc/ha.d/ha.cf /etc/ha.d/authkeys /etc/ha.d/haresources /etc/exports 以上四个文件与HUTUNFS1相同
/etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 hutunfs2 localhost.localdomain localhost 192.168.0.30 hutunfs1 192.168.0.31 hutunfs2
3. 在HUTUNFS1 & HUTUNFS2上运行ntsysv，确认nfs服务关闭，heartbeat服务打开。 先重起HUTUNFS1，再重起HUTUNFS2，HUTUNFS1作为master运行，HUTUNFS2作为slave运行。 当HUTUNFS1失效时，HUTUNFS2将自动接管192.168.0.30，并同时开启NFS服务。
