集群配置完成后,如何知道集群已经配置成功了呢,下面我们就分情况测试RHCS提供的高可用集群和存储集群功能.
一、 高可用集群测试
在前面的文章中,我们配置了四个节点的集群系统,每个节点的主机名分别是web1、web2、Mysql1、Mysql2,四个节点之间的关系是：web1和web2组成web集群,运行webserver服务,其中web1是主节点,正常状态下服务运行在此节点,web2是备用节点；Mysql1和Mysql2组成Mysql集群,运行mysqlserver服务,其中,Mysql1是主节点,正常状态下服务运行在此节点,Mysql2为备用节点.
下面分四种情况介绍当节点发生宕机时,集群是如何进行切换和工作的.
1 节点web2宕机时
宕机分为正常关机和异常宕机两种情况,下面分别说明.
（1） 节点web2正常关机
在节点web2上执行正常关机命令：
[root@web2 ~]#init 0
然后在web1节点查看/var/log/messages日志,输出信息如下：
Aug 24 00:57:09 web1 clurgmgrd[3321]: <notice> Member 1 shutting down
Aug 24 00:57:17 web1 qdiskd[2778]: <info> Node 1 shutdown
Aug 24 00:57:29 web1 openais[2755]: [TOTEM] The token was lost in the OPERATIONAL state.
Aug 24 00:57:29 web1 openais[2755]: [TOTEM] Receive multicast socket recv buffer size (320000 bytes).
Aug 24 00:57:29 web1 openais[2755]: [TOTEM] Transmit multicast socket send buffer size (219136 bytes).
Aug 24 00:57:29 web1 openais[2755]: [TOTEM] entering GATHER state from 2.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] entering GATHER state from 0.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] Creating commit token because I am the rep.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] Saving state aru 73 high seq received 73
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] Storing new sequence id for ring bc8
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] entering COMMIT state.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] entering RECOVERY state.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] position [0] member 192.168.12.230:
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] previous ring seq 3012 rep 192.168.12.230
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] aru 73 high delivered 73 received flag 1
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] position [1] member 192.168.12.231:
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] previous ring seq 3012 rep 192.168.12.230
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] aru 73 high delivered 73 received flag 1
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] position [2] member 192.168.12.232:
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] previous ring seq 3012 rep 192.168.12.230
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] aru 73 high delivered 73 received flag 1
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] Did not need to originate any messages in recovery.
Aug 24 00:57:49 web1 openais[2755]: [TOTEM] Sending initial ORF token
Aug 24 00:57:49 web1 openais[2755]: [CLM ] CLM CONFIGURATION CHANGE
Aug 24 00:57:49 web1 openais[2755]: [CLM ] New Configuration:
Aug 24 00:57:49 web1 openais[2755]: [CLM ] r(0) ip(192.168.12.230)
Aug 24 00:57:49 web1 openais[2755]: [CLM ] r(0) ip(192.168.12.231)
Aug 24 00:57:49 web1 openais[2755]: [CLM ] r( |
